CN108626289B - Elastic assembly, landing door mechanism and method for changing elastic coefficient of tension spring - Google Patents

Abstract

The invention relates to an elastic component, a landing door mechanism and a method for changing the elastic coefficient of a tension spring. The landing door mechanism comprises a guide rail frame, two landing doors and the elastic assembly, the two landing doors are connected with the guide rail frame and used for realizing opposite or back-to-back synchronous movement of the two landing doors, one end of the tension spring is connected with one landing door, and the other end of the tension spring is fixed on one side of the other landing door. Through set up in the layer door mechanism elastic component for when layer door is in the closed condition, the whole coefficient of elasticity of extension spring is greater than the coefficient of elasticity of extension spring self originally. Under the effect of sedan-chair door machine, when layer door was opened to a certain extent gradually, the elastic coefficient of extension spring resumes to self original elastic coefficient. Therefore, under the condition of the self-closing force of the barrier door, the opening resistance of the pull spring to the barrier door in the opening state of the barrier door is reduced, the requirement on the output power of the car door machine is reduced, and the cost is reduced.

Description

Elastic assembly, landing door mechanism and method for changing elastic coefficient of tension spring

technical field

The invention relates to the technical field of elevators, in particular to an elastic assembly, a landing door mechanism and a method for changing the elastic coefficient of a tension spring.

Background technique

In the elevator field, the landing door is a component used to isolate the outside world from the car door. When the car reaches the target floor, the landing door is opened together with the car door under the action of the car door operator. When the car is about to leave the target floor, the car door operator acts to close the car door, and the floor door, as a driven component, can only be closed by its own self-closing ability to ensure the isolation between the outside world and the hoistway and ensure safety. In general, in order to satisfy the requirement that the landing door can be automatically closed and can be opened with the car door, an elastic member is used to apply elastic force to the landing door. When the car is about to leave the target floor, the landing door will automatically close under the elastic force of the elastic member. When the car arrives, the car door operator overcomes the elastic force of the elastic member to open the landing door. However, this method has higher requirements on the output power of the car door machine, resulting in higher costs.

SUMMARY OF THE INVENTION

Based on this, it is necessary to provide an elastic assembly, a landing door mechanism and a method for changing the elastic coefficient of the tension spring, which can reduce the impact on the car door operator under the condition that the landing door can be reliably closed and can also be opened by the car door operator. output power requirements to reduce costs.

Its technical solutions are as follows:

An elastic assembly includes a tension spring, a first support member and a second support member that are slidably sleeved on each other, and the part of the tension spring corresponding to the first support member and the second support member is an auxiliary section, The other part of the tension spring is the main body segment, one end of the first support member away from the second support member is connected with one end of the auxiliary section, and one end of the second support member away from the first support member It is connected with the other end of the auxiliary section, and the minimum distance between the end of the first support piece connected to the auxiliary section and the end of the second support piece connected to the auxiliary section is greater than the free length of the auxiliary section. length in state.

The above solution provides an elastic assembly, which supports the auxiliary section of the tension spring through the first support member and the second support member that are slidably sleeved with each other. When the tension force to both ends of the tension spring is less than the preset value, the length of the auxiliary segment is greater than the length of the auxiliary segment in the free state, so that only the main body segment is deformed to overcome the tension force, so that the overall elastic coefficient of the tension spring is Greater than the original elastic coefficient of the tension spring itself. When the tension force at both ends of the tension spring is greater than or equal to a predetermined value, the unit deformation amount of the auxiliary section of the tension spring is the same as the unit deformation amount of the main section, that is, the supporting member does not support the auxiliary section at this time. The auxiliary section of the tension spring is stretched synchronously with the support section, so that the overall elastic coefficient of the tension spring is restored to its original elastic coefficient, that is, the tension spring is smaller than when the auxiliary section is supported by the support member. The overall elasticity coefficient. The above solution changes the elastic coefficient of the tension spring in different states as a whole by arranging the first support member and the second support member, so that when the overall deformation of the tension spring is less than a certain value, the The tension spring has sufficient tension. When the deformation amount of the tension spring exceeds a certain value, the elastic coefficient of the tension spring becomes smaller than before, thereby reducing the tension difference of the tension spring in two states.

Especially in the field of elevators, the arrangement of the above elastic components can make the landing door in a self-closing state, and the overall elastic coefficient of the tension spring is large, which can give the landing door sufficient self-closing force. When the car reaches the corresponding landing, and the landing door is opened to a certain extent under the action of the car door operator so that the deformation amount of the tension spring reaches a certain value, the elastic coefficient of the tension spring becomes smaller. The difference between the pulling force of the tension spring on the landing door when the landing door is in a closed state and the pulling force on the landing door when the landing door is fully opened is reduced. Further, when the self-closing force exerted by the tension spring is sufficient under the self-closing state of the landing door, the resistance of the tension spring to hinder the opening of the landing door when the landing door is opened to a predetermined value is reduced, thereby reducing the output to the car door machine. power requirements and reduce costs.

Further, the first support is a first sleeve, the second support is a second sleeve, the first sleeve and the second sleeve are sleeved with each other, and the tension spring is sleeved on outside the first sleeve and the second sleeve.

The first support member is a first sleeve, the second support member is a second sleeve, the first sleeve and the second sleeve are sleeved with each other, the first sleeve and the second sleeve The sleeves are all sleeved outside the tension spring.

Further, the elastic assembly further includes a first fixing member and a second fixing member, the first fixing member is located on the first sleeve, the second fixing member is located on the second sleeve, and one end of the auxiliary section is connected to the The first fixing piece is connected, and the other end of the auxiliary section is connected with the second fixing piece.

Further, the first sleeve is provided with a first through hole, the second sleeve is provided with a second through hole, the first fixing member is penetrated in the first through hole, the The second fixing member is penetrated in the second through hole.

Further, the first fixing member includes a first horizontal plate and a first vertical plate that are connected to each other to form a T-shaped structure, the first vertical plate passes through the first through hole, and the first horizontal plate passes through the first through hole. The plate is located outside the first sleeve, the second fixing member includes a second horizontal plate and a second vertical plate that are connected to each other to form a T-shaped structure, and the second vertical plate passes through the second through hole The second transverse plate is located outside the second sleeve, and when the tension spring is sleeved outside the first sleeve and the second sleeve, the two ends of the auxiliary section are respectively connected to the first sleeve and the second sleeve. A horizontal plate is connected to the second horizontal plate. When the first sleeve and the second sleeve are both sheathed outside the tension spring, the two ends of the auxiliary section are connected to the first vertical plate and the second vertical plate respectively. Riser connection.

Further, the first fixing member, the second fixing member, the first through hole and the second through hole are all two, and the two first through holes are arranged opposite to each other, and are respectively inserted into the two through holes. The two first vertical plates in the first through holes are connected to each other, the two second through holes are arranged opposite to each other, and the two second vertical plates respectively inserted in the two second through holes are connected to each other.

Further, both the first through holes and the second through holes are multiple, the multiple first through holes are distributed at intervals along the axial direction of the first sleeve, and the multiple second through holes are distributed along the axial direction of the first sleeve. The axial spacing of the two sleeves is distributed.

A landing door mechanism, comprising a guide rail frame, two landing doors and the above-mentioned elastic assembly, the two landing doors are connected with the guide rail frame, and are used to realize the synchronous movement of the two landing doors towards or opposite to each other, and the tension spring One end of the tension spring is connected with one landing door, and the other end of the tension spring is fixed on the side where the other landing door is located.

The above solution provides a landing door mechanism, mainly by arranging the above elastic components, so that when the two landing doors move synchronously toward the closed state under the guiding action of the guide rail frame, the tension spring is in an automatic position for the landing door. The self-closing force in the closed state is sufficient. When the two landing doors move synchronously and opposite to each other and open to a certain state, the elastic coefficient of the tension spring is smaller than that in the self-closing state of the landing door. Furthermore, when the self-closing force given by the tension spring to the landing door is sufficient when the landing door is in a self-closing state, the resistance of the tension spring to the opening of the landing door when the landing door is opened to a certain state is reduced, thereby reducing the impact on the car door. Door machine output power requirements, reduce costs.

A method for changing the elastic coefficient of a tension spring, comprising the following steps:

A part of the tension spring is axially stretched in advance, the axially stretched part of the tension spring is the auxiliary section, the other part of the tension spring is the main section, and the auxiliary section is in the first state at this time;

At both ends of the tension spring, when the acting force is less than a predetermined value, the auxiliary section is in the first state, and the main section is stretched against the acting force. At this time, the unit deformation of the auxiliary section is greater than the unit deformation of the main section. variable;

With the increase of the acting force, when the acting force at both ends of the tension spring is equal to the predetermined value, the unit deformation amount of the main section is equal to the unit deformation amount of the auxiliary section;

Continue to increase the acting force, when the acting force at both ends of the tension spring is greater than a predetermined value, the auxiliary section and the main body section are stretched synchronously, the auxiliary section is in the second state, and the unit deformation of the auxiliary section is greater than the The unit deformation amount when the auxiliary segment is in the first state.

The above-mentioned solution provides a method for changing the elastic coefficient of the tension spring, mainly by stretching a part of the tension spring in advance in the axial direction, so that the auxiliary section is in the first state. When the acting force at both ends of the tension spring is smaller than a predetermined value, the overall elastic coefficient of the tension spring is smaller than the original elastic coefficient of the tension spring itself. When the force at both ends of the tension spring is greater than or equal to a predetermined value, the unit deformation of the auxiliary section is equal to the unit deformation of the main section, and the overall elastic coefficient of the tension spring is displaced from its original elastic coefficient, thereby changing the The elastic coefficient of the tension spring is described in order to reduce the difference between the forces at both ends of the tension spring during the state change. For example, in the process of opening and closing the landing door, the above method can be adopted, so that when the landing door is in the self-closing state, the tension spring can give sufficient self-closing force, when the car door operator opens the landing door to a certain level When the degree of elasticity is reached, the elastic coefficient of the tension spring becomes smaller, which reduces the requirement for the output power of the car door machine, thereby reducing the cost.

Description of drawings

FIG. 1 is a schematic structural diagram of the elastic component according to this embodiment;

FIG. 2 is a schematic structural diagram of another state of the elastic component according to this embodiment;

FIG. 3 is a schematic structural diagram of another state of the elastic component according to the present embodiment;

4 is a schematic structural diagram of the first support member and the second support member according to this embodiment;

FIG. 5 is another schematic structural diagram of the first support member and the second support member according to this embodiment;

Fig. 6 is the left side view of Fig. 4;

FIG. 7 is a schematic structural diagram of the landing door mechanism according to this embodiment.

Description of reference numbers:

10, landing door mechanism, 20, landing door, 30, guide rail frame, 40, elastic assembly, 41, tension spring, 411, main body section, 412, auxiliary section, 42, first support piece, 421, first through hole, 43. Second support member, 431, second through hole, 44, first fixing member, 441, first horizontal plate, 442, first vertical plate, 45, second fixing member.

Detailed ways

In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the related drawings. The preferred embodiments of the invention are shown in the accompanying drawings. However, the present invention may be embodied in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that a thorough and complete understanding of the present disclosure is provided.

It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. In contrast, when an element is referred to as being "directly on" another element, there are no intervening elements present. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for the purpose of illustration only and do not represent the only embodiment.

Unless otherwise defined, 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 invention belongs. The terms used herein in the description of the present invention are for the purpose of describing specific embodiments only, and are not intended to limit the present invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

As shown in FIG. 1 , in one embodiment, an elastic assembly 40 is provided, including a tension spring 41 , a first support member 42 and a second support member 43 slidably sleeved with each other, the tension spring 41 and the The part corresponding to the first support 42 and the second support 43 is the auxiliary section 412 , the other part of the tension spring 41 is the main section 411 , and the first support 42 is far away from the second support 43 . One end is connected to one end of the auxiliary section 412, one end of the second support 43 away from the first support 42 is connected to the other end of the auxiliary section 412, and the first support 42 is connected to the auxiliary section 412. The minimum distance between the connected end of the segment 412 and the end connected with the second support 43 and the auxiliary segment 412 is greater than the length of the auxiliary segment 412 in a free state.

The elastic assembly 40 provided by the above solution is provided with the first support 42 and the second support 43, so that the auxiliary section 412 of the tension spring 41 is stretched. When the deformation of the tension spring 41 is less than a certain value, the The overall elastic coefficient of the tension spring 41 is greater than the original elastic coefficient of the tension spring 41 . When the deformation amount of the tension spring 41 is greater than or equal to a certain value, the auxiliary section 412 and the main body section 411 have the same unit deformation amount, and are stretched synchronously, and the first support 42 and the second support 43 do The relative sliding adapts to the change of the length of the auxiliary section 412 , and at this time, the overall elastic coefficient of the tension spring 41 is its own original elastic coefficient. Therefore, the elastic coefficient of the tension spring 41 in different states is changed, so as to reduce the difference of the tension force under the condition of different deformation amounts.

Especially in the field of elevators, by using the characteristics of the above-mentioned elastic components 40, the elastic components 40 are applied in the process of closing and opening the landing doors 20, so that when the two landing doors 20 are in a self-closing state, as shown in FIG. 1 , the auxiliary section 412 of the tension spring 41 is supported by the first support member 42 and the second support member 43 , and the main body section 411 is in a stretched state against the tension force, which increases the elastic coefficient of the tension spring 41 as a whole , so that the tension spring 41 can give the landing door 20 sufficient self-closing force. When the car moves to the corresponding landing, the landing door 20 is gradually opened under the action of the car door operator. As shown in FIG. 2 , when the landing door 20 is opened to a certain extent, the auxiliary section 412 and the main section 411 have the same unit deformation, that is, the auxiliary section 412 is separated from the first support 42 and the second support The distance between the end of the first support 42 connected to the auxiliary section 412 and the end of the second support 43 connected to the auxiliary section 412 is equal to the free state of the auxiliary section 412 The elastic coefficient of the tension spring 41 is restored to the original elastic coefficient of the tension spring 41 , which is lower than the elastic coefficient of the tension spring 41 as a whole when the landing door 20 is closed. As the opening degree of the landing door 20 increases, as shown in FIG. 3 , the auxiliary section 412 is separated from the support of the first supporting member 42 and the second supporting member 43 , and the auxiliary section 412 is synchronized with the main section 411 . Telescopic, the auxiliary section 412 slides with the first support member 42 and the second support member 43 to adapt to the change of the length of the auxiliary section 412 . The overlap length between them is reduced. The elastic coefficient of the tension spring 41 at this time is still its original elastic coefficient. Therefore, under the condition of ensuring that the landing door 20 is in the closed state and the tension spring 41 can provide sufficient self-closing force, the resistance brought by the tension spring 41 to the landing door 20 when the landing door 20 is opened to a certain extent is reduced, Thereby, the requirement for the output power of the car door machine is reduced, thereby reducing the cost.

Specifically, in the above solution, through the arrangement of the first support member 42 and the second support member 43, the overall elastic coefficient of the tension spring 41 is changed, thereby reducing the amount of time required in the closed state and the fully open state of the landing door 20. The tension spring 41 imparts a difference in tension to the landing door 20 . Therefore, under the condition that the landing door 20 is in a closed state and the tension spring 41 can provide sufficient self-closing force, the pulling force of the tension spring 41 on the landing door 20 when the landing door 20 is opened to a certain extent is reduced, thereby reducing the impact on the car door operator. output power requirements, reducing costs. For example, when the landing door 20 is in the closed state, the required self-closing force is F, when the first support member 42 and the second support member 43 support the auxiliary section 412 of the tension spring 41, and the auxiliary section 412 at this time When the length is 1/4L, L is the distance between the two ends of the tension spring 41 , F=4/3K1×ΔL, ΔL is the elastic deformation amount of the tension spring 41 at this time, and K1 is the original elastic coefficient of the tension spring 41 . When the auxiliary section 412 is supported by the first support member 42 and the second support member 43, based on the basic properties of the tension spring 41 and the principle of the series connection of the tension spring 41, the overall elastic coefficient of the tension spring 41 becomes 4/3K1, that is, The elastic coefficient of the tension spring 41 at this time is increased from the original elastic coefficient K1. If the first support member 42 and the second support member 43 are not used, the tension spring 41 with the original elastic coefficient of 4/3K1 needs to be used. The landing door 20 is opened under the action of the car door operator. When the landing door 20 is opened to a certain extent, the auxiliary section 412 is separated from the support of the first supporting member 42 and the second supporting member 43, and the auxiliary section 412 is connected to the main section 411. Synchronized expansion and contraction, the tension spring 41 returns to its original state. Based on the original elastic coefficient of the tension spring 41 used in this case is K1, at this time, the elastic coefficient of the entire tension spring 41 is K1. However, if the first support member 42 and the second support member 43 are not used, the tension spring 41 with an elastic coefficient of 4/3K1 needs to be used to meet the self-closing requirement of the landing door 20, and at this time, the elastic coefficient of the tension spring 41 is 4 /3K1, which is higher than the elastic coefficient K1 of the tension spring 41 when the first support member 42 and the second support member 43 are used in this case. Therefore, by using the elastic component 40 in this case, in the case where the tension spring 41 meets the self-closing force requirement when the landing door 20 is in a closed state, the elastic coefficient of the tension spring 41 when the landing door 20 is opened to a certain state is reduced, thereby reducing the The resistance of the tension spring 41 to the opening of the landing door 20 further reduces the demand for the output power of the car door machine and reduces the cost.

Specifically, the first support member 42 and the second support member 43 can be a rod-shaped structure or a shell structure, etc., as long as they can slide relative to each other, they can play a role in the auxiliary section 412 when the landing door 20 is closed. For the support function, when the landing door 20 is opened to a certain extent and the auxiliary section 412 is separated from the support of the first support member 42 and the second support member 43 , the first support member 42 and the second support member 43 can be opposed to each other. The sliding can be adapted to the change of the length of the auxiliary section 412 . Specifically, as shown in FIGS. 4 and 5 , in one embodiment, the first support member 42 is a first sleeve, the second support member 43 is a second sleeve, and the first sleeve The tension spring 41 is sleeved with the second sleeve, and the tension spring 41 is sleeved outside the first sleeve and the second sleeve. Or in another embodiment, the first sleeve and the second sleeve are both sleeved outside the tension spring 41 . By designing the first support member 42 and the second support member 43 as the first sleeve and the second sleeve respectively, the tension spring can be inserted into the first sleeve and the second sleeve regardless of whether the tension spring is used. The method is still adopted in which the tension spring is sleeved outside the first sleeve and the second sleeve, and the first sleeve and the second sleeve can not only adapt to any The change of the length of the auxiliary section 412 can also be moved along with the movement of the center of the auxiliary section 412 .

Further, in the above solution, the first support member 42 and the second support member 43 can support the auxiliary section 412, and the first support member 42 and the second support member 43 can be separated from each other by the distance between the first support member 42 and the second support member 43. A protrusion is provided at the end of the auxiliary section 412, and the two ends of the auxiliary section 412 are respectively connected to the two protrusions. Alternatively, as shown in FIG. 4 , in one embodiment, a first fixing member 44 and a second fixing member 45 are further provided in the elastic component 40 , the first fixing member 44 is located on the first sleeve, and the second fixing member 44 is located on the first sleeve. The member 45 is located on the second sleeve, and the two ends of the auxiliary section 412 are respectively connected with the first fixing member 44 and the second fixing member 45 .

Further, in order to facilitate the installation of the first fixing member 44 and the second fixing member 45, as shown in FIG. 5, in one embodiment, a first through hole 421 is provided on the first sleeve, The second sleeve is provided with a second through hole 431 , the first fixing member 44 is inserted through the first through hole 421 , and the second fixing member 45 is inserted through the second through hole 431 middle. Moreover, the first fixing member 44 passing through the first through hole 421 and the second fixing member 45 passing through the second through hole 431 also serve to connect the first sleeve with the The limiting function of the second sleeve. Specifically, when the landing door 20 is in a closed state, the first sleeve and the second sleeve slide toward each other under the action of the auxiliary section 412 , based on the first fixing member 44 and the second fixing member 45 , respectively Through the first sleeve and the second sleeve, the first fixing member 44 or the second fixing member 45 will limit the second sleeve or the first sleeve to ensure the The minimum overlapping length of the first sleeve and the second sleeve. Or a limiter can be set in the first sleeve or the second sleeve. When the first sleeve and the second sleeve move towards each other to a certain extent, the first sleeve and the second sleeve can no longer be used. Move towards each other so that the minimum overlap length is guaranteed.

Further, in one embodiment, both the first through holes 421 and the second through holes 431 are multiple, and the multiple first through holes 421 are distributed at intervals along the axial direction of the first sleeve, and there are multiple first through holes 421 . The second through holes 431 are distributed at intervals along the axial direction of the second sleeve. In this way, the first fixing member 44 can be installed in the corresponding first through hole 421 and the second fixing member 45 can be installed in the corresponding second through hole 431 according to actual needs. Therefore, the requirement for self-closing force of the landing door 20 in the self-closing state in different environments is satisfied, that is, the requirement for the length of the auxiliary section 412 in different environments is satisfied.

More specifically, as shown in FIG. 6 , in one embodiment, the first fixing member 44 includes a first horizontal plate 441 and a first vertical plate 442 that are connected to each other to form a T-shaped structure, and the first vertical plate 442 442 passes through the first through hole 421, the first horizontal plate 441 is located outside the first sleeve, and the second fixing member 45 includes a second horizontal plate and a second vertical plate connected to each other, A T-shaped structure is formed, the second vertical plate passes through the second through hole 431, the second horizontal plate is located outside the second sleeve, and when the tension spring 41 is sleeved on the first When the sleeve and the second sleeve are outside, the two ends of the auxiliary section 412 are respectively connected with the first transverse plate 441 and the second transverse plate. When the extension spring 41 is outside, the two ends of the auxiliary section 412 are respectively connected with the first vertical plate 442 and the second vertical plate. By setting the first fixing member 44 and the second fixing member 45 into the T-shaped structure, the two ends of the auxiliary section 412 can be better connected to the first fixing member 44 and the second fixing member respectively. 45 connections. Specifically, when the tension spring 41 is sheathed outside the first sleeve and the second sleeve, the two ends of the auxiliary section 412 are respectively connected to the first transverse plate 441 and the second transverse plate. When the first sleeve and the second sleeve are both sleeved outside the tension spring 41 , the two ends of the auxiliary section 412 are respectively connected to the first vertical plate 442 and the second vertical plate.

Further, in order to improve the uniformity of force when the auxiliary section 412 is supported, as shown in FIG. 4 and FIG. 6 , the first fixing member 44 , the second fixing member 45 , and the first through hole 421 and the second through holes 431 are two, the two first through holes 421 are arranged opposite to each other, and the two first vertical plates 442 respectively inserted in the two first through holes 421 are connected to each other, and the two first through holes 421 are connected to each other. The two through holes 431 are disposed opposite to each other, and the two second vertical plates respectively inserted in the two second through holes 431 are connected to each other.

Further, as shown in FIG. 7 , in another embodiment, a landing door mechanism 10 is provided, comprising a guide rail frame 30 , two landing doors 20 and the above-mentioned elastic assembly 40 , the two landing doors 20 and the guide rails The frame 30 is connected to realize the synchronous movement of the two landing doors 20 toward each other or opposite. side.

The above solution provides a landing door mechanism 10, mainly by using the elastic assembly 40 described in any of the above solutions, so that when the two landing doors 20 are in a closed state, the first support 42 and the second support 43 Support the auxiliary section 412 so that the overall elastic coefficient of the tension spring 41 is greater than the original elastic coefficient of the tension spring 41 to meet the self-closing force requirement of the landing door 20 . When the landing door 20 is gradually opened to a certain degree, the auxiliary section 412 is separated from the support of the first support member 42 and the second support member 43 , and expands and contracts synchronously with the main body section 411 , that is, the elasticity of the tension spring 41 The coefficient returns to its original elastic coefficient, that is, the elastic coefficient of the entire tension spring 41 decreases compared to when the landing door 20 is closed. Therefore, the landing door mechanism 10 can reduce the resistance of the tension spring 41 to the landing door 20 when the landing door 20 is opened to a certain state under the condition that the self-closing force requirement of the landing door 20 is satisfied. Thereby, the output power of the car door machine is reduced and the cost is reduced.

A method for changing the elastic coefficient of a tension spring 41, comprising the following steps:

A part of the tension spring 41 is axially stretched in advance, the axially stretched part of the tension spring 41 is the auxiliary segment 412 , and the other part of the tension spring 41 is the main body segment 411 . At this time, the auxiliary segment 412 is in the first state;

At both ends of the tension spring 41, when the acting force is smaller than the predetermined value, the auxiliary section 412 is in the first state, and the main section 411 is stretched against the acting force. At this time, the unit deformation of the auxiliary section 412 is greater than that of the main body. Unit deformation variable of segment 411;

With the increase of the acting force, when the acting force at both ends of the tension spring 41 is equal to a predetermined value, the unit deformation amount of the main section 411 is equal to the unit deformation amount of the auxiliary section 412;

Continue to increase the acting force. When the acting force at both ends of the tension spring 41 is greater than the predetermined value, the auxiliary section 412 and the main section 411 are stretched synchronously, and the auxiliary section 412 is in the second state. At this time, the unit of the auxiliary section 412 is The deformation amount is greater than the unit deformation amount when the auxiliary segment 412 is in the first state.

The above method of changing the elastic coefficient of the tension spring 41 changes the elastic coefficient of the entire tension spring 41 by stretching a part of the tension spring 41 in advance, so that the elastic coefficient of the entire tension spring 41 is greater than the original elastic coefficient. And when the force at both ends of the tension spring 41 reaches a certain value, the auxiliary section 412 is disengaged from the support and stretched synchronously with the main body section 411, so that the overall elastic coefficient of the tension spring 41 is restored to its original elastic coefficient, thereby realizing the tension spring 41 in different The change in the elastic coefficient in the state. Specifically, the above-mentioned method can be implemented by using the above-mentioned elastic component 40 to realize the change of the elastic coefficient of the tension spring 41 in the elastic component 40 and apply it to the above-mentioned landing door mechanism 10, thereby achieving the purpose of reducing cost.

It is also possible to provide a tension spring, a support rod and two limiters, the part of the tension spring corresponding to the support rod is the auxiliary section, the other parts of the tension spring are the main section, and the two limiters are along the length of the support rod. Axially spaced and used to support both ends of the auxiliary section 412, the control unit is used to control the extension and retraction of the limiting member on the support rod, when the two landing doors 20 move toward each other to a certain extent When the limiter is extended, and the outer side of the limiter is in contact with the corresponding end of the auxiliary section 412, when the two landing doors 20 are moved away from each other to a certain extent, the limiter When contracted, the auxiliary section 412 and the main section 411 expand and contract synchronously.

Specifically, when the two landing doors 20 move toward each other so that the landing doors 20 are closed to a certain extent, the control unit controls the two limiting members to extend to limit the contraction of the auxiliary section 412 . When the landing door 20 moves relative to make the landing door 20 open to a certain state, the control unit controls the two limiting members to contract, so that the auxiliary section 412 and the main section 411 expand and contract synchronously, that is, the elastic coefficient of the tension spring 41 is restored to itself original elastic coefficient.

The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity, all possible combinations of the technical features in the above-described embodiments are not described. However, as long as there is no contradiction between the combinations of these technical features, All should be regarded as the scope described in this specification.

The above-mentioned embodiments only represent several embodiments of the present invention, and the descriptions thereof are specific and detailed, but should not be construed as a limitation on the scope of the invention patent. It should be pointed out that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can also be made, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention should be subject to the appended claims.

Claims (10)

1. An elastic component is characterized by comprising a tension spring, a first supporting piece and a second supporting piece which are mutually sleeved in a sliding way, the parts of the tension spring corresponding to the first support part and the second support part are auxiliary sections, the other parts of the tension spring are main body sections, one end of the first supporting piece far away from the second supporting piece is connected with one end of the auxiliary section, one end of the second supporting piece far away from the first supporting piece is connected with the other end of the auxiliary section, the minimum distance between one end of the first supporting piece connected with the auxiliary section and one end of the second supporting piece connected with the auxiliary section is larger than the length of the auxiliary section in a free state, so that the auxiliary section of the tension spring is expanded, when the deformation amount of the tension spring is smaller than a certain value, the overall elastic coefficient of the tension spring is larger than the original elastic coefficient of the tension spring.

2. The elastic assembly according to claim 1, wherein the first supporting member is a first sleeve, the second supporting member is a second sleeve, the first sleeve and the second sleeve are sleeved with each other, and the tension spring is sleeved outside the first sleeve and the second sleeve.

3. The spring assembly of claim 1, wherein the first support member is a first sleeve, the second support member is a second sleeve, the first sleeve and the second sleeve are sleeved with each other, and the first sleeve and the second sleeve are both sleeved outside the tension spring.

4. A resilient assembly according to claim 2 or 3, further comprising a first fixing member located on the first sleeve and a second fixing member located on the second sleeve, one end of the auxiliary section being connected to the first fixing member and the other end of the auxiliary section being connected to the second fixing member.

5. The elastic assembly according to claim 4, wherein a first through hole is formed on the first sleeve, a second through hole is formed on the second sleeve, the first fixing member is inserted into the first through hole, and the second fixing member is inserted into the second through hole.

6. The elastic assembly according to claim 5, wherein the first fixing member comprises a first transverse plate and a first vertical plate which are connected with each other to form a T-shaped structure, the first vertical plate is arranged in the first through hole in a penetrating manner, the first transverse plate is arranged outside the first sleeve, the second fixing member comprises a second transverse plate and a second vertical plate which are connected with each other to form a T-shaped structure, the second vertical plate is arranged in the second through hole in a penetrating manner, the second transverse plate is arranged outside the second sleeve, when the tension spring is sleeved outside the first sleeve and the second sleeve, two ends of the auxiliary section are connected with the first transverse plate and the second transverse plate respectively, and when the first sleeve and the second sleeve are sleeved outside the tension spring, two ends of the auxiliary section are connected with the first vertical plate and the second vertical plate respectively.

7. The elastic assembly according to claim 6, wherein the first fixing member, the second fixing member, the first through hole and the second through hole are two, the two first through holes are oppositely arranged, two first vertical plates respectively inserted into the two first through holes are connected with each other, the two second through holes are oppositely arranged, and two second vertical plates respectively inserted into the two second through holes are connected with each other.

8. The elastomeric assembly of claim 5, wherein the first and second through holes are each a plurality of first through holes spaced axially of the first sleeve and a plurality of second through holes spaced axially of the second sleeve.

9. A landing door mechanism, characterized in that, including guide rail frame, two landing doors and claim 1 to 8 any one the elastic component, two landing doors with the guide rail frame is connected for realize two landing doors in opposite directions or back of the body synchronous motion, the one end and the landing door of extension spring are connected, the other end of extension spring is fixed in one side at another landing door place.

10. A method for changing the elastic coefficient of a tension spring is characterized by comprising the following steps:

pre-expanding one part of a tension spring along the axial direction, wherein the expanded part of the tension spring along the axial direction is an auxiliary section, the other part of the tension spring is a main body section, and the auxiliary section is in a first state;

when the acting force is smaller than a preset value, the auxiliary section is in a first state, the main body section is stretched by overcoming the acting force, and the unit deformation amount of the auxiliary section is larger than that of the main body section;

along with the increase of the acting force, when the acting force at the two ends of the tension spring is equal to a preset value, the unit deformation quantity of the main body section is equal to that of the auxiliary section;

and continuously increasing the acting force, wherein when the acting force at the two ends of the tension spring is greater than a preset value, the auxiliary section and the main body section are synchronously stretched, the auxiliary section is in the second state, and the unit deformation amount of the auxiliary section is greater than that of the auxiliary section in the first state.

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