A delayed door opening and closing device for EMU doors

Abstract

The present invention belongs to the technical field of auxiliary accessories for EMUs, and relates to a delayed door opening and closing device for EMU doors, including a housing, a delay mechanism, a transmission mechanism, a trigger mechanism, and a pressing mechanism. The delay mechanism is arranged at the lower part of the housing, and the trigger mechanism and the pressing mechanism are arranged at the upper part of the housing. The delay mechanism is connected to the transmission mechanism, the transmission mechanism is connected to the trigger mechanism, and the trigger mechanism is connected to the pressing mechanism. Through the delayed door opening and closing device for EMU doors described in the present invention, when used as a delayed door closing device, when the EMU is powered on, the operator can press a button when getting off the vehicle, and the door closing button is delayed and triggered, so that the operator has sufficient time to get off the vehicle, thereby solving the door closing problem when the EMU is powered on and does not have a boarding ladder, effectively preventing the occurrence of labor and personal safety problems of the operator, and better completing the door sealing management work of the EMU.

Description

Technical Field

[0001] The invention belongs to the technical field of auxiliary accessories of electric train sets, and relates to a delayed door opening and closing device for doors of electric train sets. Background Art

[0002] The door closing button of the EMU is inside the carriage, 2.5 meters above the ground. When the door closing button is pressed, it takes about 3 seconds to close the door. In order to prevent people from being caught or falling when getting off the train, the operator needs to jump down quickly from a height, which poses a great risk to personal safety. Therefore, in order to solve the problem that it is difficult to close the door when there is no boarding ladder in the power supply state of some models of EMUs, it is urgent to develop a delayed door opening and closing device. Summary of the invention

[0003] The purpose of the present invention is to provide a delayed door opening and closing device for EMU doors, so as to solve the problem that it is difficult to close the doors when there is no boarding ladder in the power supply state of some models of EMUs.

[0004] The implementation process of the present invention is as follows:

[0005] A delayed door opening and closing device for EMU doors comprises a shell, a delay mechanism, a transmission mechanism, a trigger mechanism and a pressing mechanism. The delay mechanism is arranged at the lower part of the shell, the trigger mechanism and the pressing mechanism are arranged at the upper part of the shell, the delay mechanism is connected to the transmission mechanism, the transmission mechanism is connected to the trigger mechanism, and the trigger mechanism is connected to the pressing mechanism.

[0006] Furthermore, the shell includes a top panel, a bottom panel, a rear panel, a front panel, a left panel, and a right panel, and a mounting bracket for device installation is arranged on the periphery of the rear panel.

[0007] Furthermore, the delay mechanism includes a timer bracket, a timer, an eccentric cam, and a delay knob, wherein the timer bracket is installed inside the shell, the timer is installed on the timer bracket, the timer is located between the rear panel of the shell and the timer bracket, the rotating shaft of the timer passes through the timer bracket and is connected to the eccentric cam, a delay knob mounting hole for installing the delay knob is provided on the front panel of the shell, and the delay knob is mounted on the eccentric cam outside the shell through the delay knob mounting hole.

[0008] Furthermore, the transmission mechanism includes a slider, a compression slide rail, a first compression spring, and a toggle spring ejector pin. The slider is arranged between the timer bracket and the front panel of the shell. The slider is an inverted L-shaped structure, including a horizontal part and a vertical part. An oblong hole is arranged in the middle of the vertical part. The oblong hole of the vertical part is sleeved on the eccentric cam. A spring mounting hole is arranged on the upper part of the vertical part. The first compression spring and the toggle spring ejector pin are installed in the spring mounting hole. The toggle spring ejector pin consists of a shoulder and an ejector pin located at the top of the shoulder. A spring mounting groove is arranged at the axial bottom of the shoulder of the toggle spring ejector pin. One end of the first compression spring is pressed against the bottom of the spring mounting hole, and the other end of the first compression spring is pressed against the spring mounting groove at the axial bottom of the toggle spring ejector pin.

[0009] Furthermore, the compression slide rail is a special-shaped structure, the compression slide rail is installed between the slider and the front panel of the shell, the compression slide rail is provided with a guide groove for guiding the sliding direction of the eccentric shaft of the eccentric cam, the rear surface of the compression slide rail on the upper side of the guide groove is provided with a rectangular groove, the front surface of the compression slide rail with the rectangular groove is provided with an ejector sliding groove for penetrating the ejector pin of the toggle spring, the guide groove is connected with the ejector sliding groove, the shoulder of the toggle spring ejector is stuck in the rectangular groove, the ejector pin of the toggle spring ejector is located in the ejector sliding groove, and the compression slide rail is symmetrically provided with a second A compression spring, a second compression spring is located on both sides of the guide groove, a spring accommodating cavity for accommodating the second compression spring is provided on the inner surface of the front panel of the shell, when the compression slide rail moves downward, the second compression spring will be compressed in the spring accommodating cavity, inverted trapezoidal holes are symmetrically provided on both sides of the upper part of the compression slide rail, an ejector slide is provided on the inner surface of the front panel of the shell, and the lower end of the ejector slide is an inclined surface, when the slider moves downward, the ejector pin of the moving spring ejector slides downward along the ejector slide on the shell until it escapes from the inclined surface at the lower end of the ejector slide.

[0010] Furthermore, the trigger mechanism includes a trigger slide pad and a trigger fork; the pressing mechanism includes a button, a button spring ejector, a third compression spring, a fourth compression spring, a pressing card, a card, a slide pad, and a positioning support. The button is covered with a fourth compression spring, a trigger slide pad, and a trigger fork. A button mounting hole is provided on the upper part of the front panel of the shell, and the button is installed on the outside of the shell through the button mounting hole. The fourth compression spring is located between the trigger slide pad and the shell. The trigger slide pad is an annular structure, and the trigger fork is a U-shaped structure.

[0011] Furthermore, the pressing card is composed of two symmetrically arranged deformed inverted L-shaped structures, one end of which is hinged by an axle pin, and a torsion spring is provided on the axle pin. Two locating pins are symmetrically provided on the inner side of the hinged end of the deformed inverted L-shaped structure, and the locating pins and the axle pins are fixed to the inner side of the front panel of the shell. The other ends of the two deformed inverted L-shaped structures are respectively located on both sides of the middle part of the periphery of the trigger slide pad, and are respectively in contact with the upper end of the trigger fork. The lower end of the U-shaped structure of the trigger fork is connected to the lower part of the card through a connecting shaft, and the card can move along the connecting shaft. When the deformed inverted L-shaped structure is retracted inwardly after being acted upon by the torsion spring, the lower end of the deformed inverted L-shaped structure moves downward to push the trigger fork downward, and at the same time, under the action of the torsion spring, it is clamped by the deformed inverted L-shaped structure on both sides of the middle part of the periphery of the trigger slide pad.

[0012] Furthermore, a button spring ejector is installed in the button, and a third compression spring, a sliding pad, a clamping piece, and a positioning support are sequentially sleeved on the needle shaft of the button spring ejector, wherein a clamping groove for fixing the clamping piece is provided in the middle part of the needle shaft of the button spring ejector sleeved with the third compression spring, and a clamping piece groove for accommodating the clamping piece is provided on the sliding pad, and the lower surface of the sliding pad is fixedly connected to the upper surface of the positioning support, and the clamping piece is located in the clamping piece groove between the sliding pad and the positioning support, and the third compression spring presses the positioning support and the button spring ejector against the rear panel and the button of the shell respectively, and the elastic coefficient of the third compression spring is greater than the elastic coefficient of the fourth compression spring.

[0013] Furthermore, a special-shaped hole is provided on the clamp, the inner diameter D1 of the upper part of the special-shaped hole is smaller than the needle shaft diameter D2 of the button spring ejector, the inner diameter D3 of the lower part of the special-shaped hole is larger than the needle shaft diameter D2 of the button spring ejector, the hole in the upper part of the special-shaped hole can be stuck in the slot on the button spring ejector, the needle shaft of the button spring ejector can slide in the hole in the lower part of the special-shaped hole, and the lower end of the clamp contacts the horizontal part of the slider.

[0014] Furthermore, the sliding pad is a cylindrical structure, and two sliding pins are symmetrically arranged in the middle of the two outer side surfaces of the sliding pad. Long circular hole slides for positioning the sliding pins in the sliding direction are symmetrically arranged on the left and right panels of the shell. The sliding pin is positioned in the long circular hole slide after passing through the inverted trapezoidal hole of the compression slide rail, and can slide along the long circular hole slide; the positioning support is a hollow cylindrical structure, and a circular hole for the needle shaft of the button spring ejector pin to pass through is arranged on the rear panel of the shell. A pressing card slide groove for pressing the lower end of the card to slide is symmetrically arranged on the left and right panels of the shell, and the axial direction of the long circular hole slide is perpendicular to the axial direction of the pressing card slide groove.

[0015] Positive effects of the present invention:

[0016] (1) To achieve the purpose of delaying the pressing of the door opening or closing switch, especially to delay the pressing of the door closing switch to achieve automatic closing of the door after the person gets off the vehicle;

[0017] (2) Do not change the original configuration of the train;

[0018] (3) No external power source is required, and the work is achieved by spring potential energy;

[0019] (4) Simple and convenient operation;

[0020] (3) The present invention uses a variety of slides and spring compensations, a mechanical timer to trigger timing, and an eccentric cam and other mechanisms to achieve the purpose of delayed pressing and recovery of the device. At the same time, under normal circumstances, the button can be pressed normally to achieve instant door closing. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the appearance of the delayed door opening and closing device for EMU doors according to the present invention;

[0022] Figure 2 This is a diagram showing the use status of the delayed door opening and closing device for EMU doors according to the present invention;

[0023] Figure 3 It is a schematic diagram of the overall structure of the delayed door opening and closing device for EMU doors according to the present invention;

[0024] Figure 4 This is the axle side view structure of the delayed door opening and closing device for EMU doors of the present invention with the outer shell removed;

[0025] Figure 5 The three-dimensional diagrams at different angles are shown after the outer shell of the delayed door opening and closing device for EMU doors of the present invention is removed;

[0026] Figure 6 The main action structure schematic diagram of the delayed door opening and closing device for EMU doors of the present invention, (1) front view, (2) AA section view, (3) rear view;

[0027] Figure 7 The initial state and the triggered state cross-sectional view of the delayed door opening and closing device for EMU doors of the present invention, (1) front view, (2) left view, (3) HH cross-sectional view of the initial state, (4) HH cross-sectional view of the triggered state;

[0028] Figure 8 It is a schematic diagram of the states of the delayed door opening and closing device for EMU doors according to the present invention at different positions during operation;

[0029] Fig. 9 is a three-dimensional schematic diagram of the slider;

[0030] Fig.10 is a three-dimensional schematic diagram of the compression slide rail;

[0031] Fig.11 An exploded view of the delayed door opening and closing device for EMU doors;

[0032] In the figure, 1 is a housing, 11 is a top panel, 12 is a bottom panel, 13 is a rear panel, 131 is a mounting bracket, 132 is a circular hole, 14 is a front panel, 15 is a left panel, 16 is a right panel, 2 is a delay mechanism, 21 is a timer bracket, 22 is a timer, 23 is an eccentric cam, 24 is a delay knob, 3 is a transmission mechanism, 31 is a slider, 311 is a horizontal part, 312 is a vertical part, 313 is an oblong hole, 32 is a compression slide rail, 321 is a guide groove, 322 is a second compression spring, 323 is an inverted trapezoidal hole, 324 is a rectangular groove, 325 is a thimble sliding groove, 326 is a thimble slideway, 33 is a first compression spring, and 34 is a toggle spring Ejector, 4 trigger mechanism, 41 trigger slide pad, 42 trigger fork, 5 pressing mechanism, 51 button, 52 button spring ejector, 521 slot, 53 third compression spring, 54 fourth compression spring, 55 pressing card, 551 deformed inverted L-shaped structure, 552 shaft pin, 553 pressing card slide slot, 554 positioning pin, 56 card, 561 special-shaped hole, 57 slide pad, 571 slide pin, 572 oblong hole slide, 58 positioning support, 6 closing button, 7 opening button, D1 inner diameter of the upper part of the special-shaped hole, D2 needle shaft diameter of the button spring ejector, D3 inner diameter of the lower part of the special-shaped hole. DETAILED DESCRIPTION

[0033] The present invention will be further described below in conjunction with the embodiments.

[0034] By means of the delayed door opening and closing device for EMU doors described in the present invention, when used as a delayed door closing device, when the EMU is powered on, the operator can press a button when getting off the vehicle, which delays the triggering of the door closing button, and the operator has sufficient time to get off the vehicle, thereby solving the door closing problem when the EMU is powered on and there is no boarding ladder, effectively preventing the operator's personal safety issues, and better completing the EMU door sealing management work.

[0035] Example 1

[0036] The delayed door opening and closing device for EMU doors described in this embodiment includes a shell 1, a delay mechanism 2, a transmission mechanism 3, a trigger mechanism 4, and a pressing mechanism 5. The delay mechanism 2 is arranged at the lower part of the shell 1, and the trigger mechanism 4 and the pressing mechanism 5 are arranged at the upper part of the shell 1. The delay mechanism 2 is connected to the transmission mechanism 3, the transmission mechanism 3 is connected to the trigger mechanism 4, and the trigger mechanism 4 is connected to the pressing mechanism 5.

[0037] Example 2 Installed on the door closing button

[0038] The delayed door opening and closing device for the EMU door described in this embodiment is shown in FIG. Figure 1-7, including a housing 1, a delay mechanism 2, a transmission mechanism 3, a trigger mechanism 4, and a pressing mechanism 5. The delay mechanism 2 is arranged at the lower part of the housing 1, and the trigger mechanism 4 and the pressing mechanism 5 are arranged at the upper part of the housing 1. The delay mechanism 2 is connected to the transmission mechanism 3, the transmission mechanism 3 is connected to the trigger mechanism 4, and the trigger mechanism 4 is connected to the pressing mechanism 5. The housing 1 includes a top panel 11, a bottom panel 12, a rear panel 13, a front panel 14, a left panel 15, and a right panel 16. The rear panel 13 is provided with a mounting bracket 131 for device installation on its periphery.

[0039] Furthermore, the delay mechanism 2 includes a timer bracket 21, a timer 22, an eccentric cam 23, and a delay knob 24. The timer bracket 21 is installed inside the shell 1, and the timer 22 is installed on the timer bracket 21. The timer 22 is located between the rear panel 13 of the shell 1 and the timer bracket 21. The rotating shaft of the timer 22 passes through the timer bracket 21 and is connected to the eccentric cam 23. A delay knob mounting hole for installing the delay knob 24 is provided on the front panel 14 of the shell 1. The delay knob 24 is installed on the eccentric cam 23 outside the shell 1 through the delay knob mounting hole.

[0040] Further, the transmission mechanism 3 includes a slider 31, a compression slide rail 32, a first compression spring 33, and a toggle spring ejector pin 34. The slider 31 is arranged between the timer bracket 21 and the front panel 14 of the shell 1. The slider 31 is an inverted L-shaped structure, including a horizontal portion 311 and a vertical portion 312. An oblong hole 313 is arranged in the middle of the vertical portion 312. The oblong hole 313 of the vertical portion 312 is sleeved on the eccentric cam 23. A spring mounting hole is arranged at the upper portion of the vertical portion 312. The first compression spring 33 and the toggle spring ejector pin 34 are installed in the spring mounting hole. The toggle spring ejector pin 34 consists of a shoulder and an ejector pin located at the top of the shoulder. A spring mounting groove is arranged at the axial bottom of the shoulder of the toggle spring ejector pin 34. One end of the first compression spring 33 is pressed against the bottom of the spring mounting hole, and the other end of the first compression spring 33 is pressed against the spring mounting groove at the axial bottom of the toggle spring ejector pin 34. The compression slide rail 32 is a special-shaped structure. The compression slide rail 32 is installed between the slider 31 and the front panel 14 of the housing 1. The compression slide rail 32 is provided with a guide groove 321 for guiding the sliding direction of the eccentric shaft of the eccentric cam 23. The rear surface of the compression slide rail 32 on the upper side of the guide groove 321 is provided with a rectangular groove 324. The front surface of the compression slide rail 32 with the rectangular groove 324 is provided with an ejector sliding groove 325 for penetrating the ejector of the toggle spring ejector 34. The guide groove 321 is connected with the ejector sliding groove 325. The shoulder of the toggle spring ejector 34 is stuck in the rectangular groove 324. The ejector of the toggle spring ejector 34 is located in the ejector sliding groove 325. The compression slide rail 32 is symmetrically provided with the first Second compression spring 322, the second compression spring 322 is located on both sides of the guide groove 321, and the inner surface of the front panel 14 of the shell 1 is provided with a spring accommodating cavity for accommodating the second compression spring 322. When the compression slide rail 32 moves downward, the second compression spring 322 will be compressed in the spring accommodating cavity, and the upper two sides of the compression slide rail 32 are symmetrically provided with inverted trapezoidal holes 323. The inner surface of the front panel 14 of the shell 1 is provided with an ejector slide 326, and the lower end of the ejector slide 326 is an inclined surface. When the slider 31 moves downward, the ejector of the movable spring ejector 34 slides downward along the ejector slide 326 on the shell 1 until it escapes from the inclined surface at the lower end of the ejector slide 326.

[0041] Furthermore, the trigger mechanism 4 includes a trigger slide pad 41 and a trigger fork 42; the pressing mechanism 5 includes a button 51, a button spring ejector pin 52, a third compression spring 53, a fourth compression spring 54, a pressing card 55, a card 56, a slide pad 57, and a positioning support 58. The button 51 is covered with a fourth compression spring 54, a trigger slide pad 41 and a trigger fork 42. A button mounting hole is provided on the upper part of the front panel 14 of the shell 1. The button 51 is installed on the outside of the shell 1 through the button mounting hole. The fourth compression spring 54 is located between the trigger slide pad 41 and the shell 1. The trigger slide pad 41 is an annular structure, and the trigger fork 42 is a U-shaped structure.

[0042] Furthermore, the pressing card 55 is a symmetrically arranged two deformed inverted L-shaped structures 551, one end of which is hinged by an axle pin 552, and the axle pin 552 is provided with a torsion spring. Two locating pins 554 are symmetrically arranged on the inner side of the hinged end of the deformed inverted L-shaped structure 551, and the locating pins 554 and the axle pin 552 are fixed to the inner side surface of the front panel 14 of the shell 1. The other ends of the two deformed inverted L-shaped structures 551 are respectively located on both sides of the middle part of the periphery of the trigger slide pad 41, and are respectively in contact with the upper end of the trigger fork 42. The lower end of the U-shaped structure of the trigger fork 42 is connected to the lower part of the card 56 through a connecting shaft, and the card 56 can move along the connecting shaft. When the deformed inverted L-shaped structure 551 is retracted inwardly after being acted upon by the torsion spring, the lower end of the deformed inverted L-shaped structure 551 moves downward to push the trigger fork 42 downward, and at the same time, under the action of the torsion spring, it is clamped by the deformed inverted L-shaped structure 551 on both sides of the middle part of the periphery of the trigger slide pad 41.

[0043] Furthermore, a button spring ejector 52 is installed in the button 51, and the needle shaft of the button spring ejector 52 is sequentially sleeved with a third compression spring 53, a sliding pad 57, a clamping piece 56, and a positioning support 58, wherein a clamping groove 521 for fixing the clamping piece 56 is provided in the middle part of the needle shaft of the button spring ejector 52 sleeved with the third compression spring 53, and a clamping piece groove 573 for accommodating the clamping piece 56 is provided on the sliding pad 57, and the lower surface of the sliding pad 57 is fixedly connected to the upper surface of the positioning support 58, and the clamping piece 56 is located in the clamping piece groove 573 between the sliding pad 57 and the positioning support 58. The third compression spring 53 presses the positioning support 58 and the button spring ejector 52 against the rear panel 13 of the shell 1 and the button 51 respectively, and the elastic coefficient of the third compression spring 53 is greater than the elastic coefficient of the fourth compression spring 54.

[0044] Furthermore, a special-shaped hole 561 is provided on the clamp 56, and the inner diameter D1 of the upper part of the special-shaped hole 561 is smaller than the needle shaft diameter D2 of the button spring ejector 52, and the inner diameter D3 of the lower part of the special-shaped hole 561 is larger than the needle shaft diameter D2 of the button spring ejector 52. The hole in the upper part of the special-shaped hole 561 can be stuck in the slot 521 on the button spring ejector 52, and the needle shaft of the button spring ejector 52 can slide in the hole in the lower part of the special-shaped hole 561, and the lower end of the clamp 56 is in contact with the horizontal part 311 of the slider 31.

[0045] Furthermore, the sliding pad 57 is a cylindrical structure, and two sliding pins 571 are symmetrically arranged in the middle of the two outer side surfaces of the sliding pad 57. An oblong hole slideway 572 for positioning the sliding direction of the sliding pin 571 is symmetrically arranged on the left side panel 15 and the right side panel 16 of the shell 1. The sliding pin 571 passes through the inverted trapezoidal hole 323 of the compression slide rail 32 and is positioned in the oblong hole slideway 572, and can slide along the oblong hole slideway 572; the positioning support 58 is a hollow cylindrical structure, and a circular hole 132 for the needle shaft of the button spring ejector pin 52 to pass through is arranged on the rear panel 13 of the shell 1, and a pressing card slideway 553 for the lower end of the pressing card 55 to slide is symmetrically arranged on the left side panel 15 and the right side panel 16 of the shell 1, and the axial direction of the oblong hole slideway 572 is perpendicular to the axial direction of the pressing card slideway 553.

[0046] The working process of the delayed door opening and closing device for EMU doors of the present invention is as follows:

[0047] The first case: Do not start the delay function

[0048] In the initial state, under the action of the third compression spring 53, the positioning support 58 and the button spring ejector 52 are pressed against the rear panel 13 and the button 51 respectively, and the elastic coefficient of the fourth compression spring 54 is smaller than that of the third compression spring 53, and the fourth compression spring 54 is compressed between the button spring ejector 52 and the button 51. At this time, the button 51 can be pressed to eject the button spring ejector 52, and the needle shaft of the button spring ejector 52 presses the door closing button, and automatically recovers after releasing it.

[0049] The second case: start the delayed door closing function (for ease of understanding, the position relationship of up, down, left and right involved in the following process is as follows Figure 3 The position of the AA section is taken as the basis)

[0050] See the schematic diagram of each state for Figure 8 ,in Figure 8 (1) is the initial state diagram, Figure 8 (2)- Figure 8 (8) The status is as follows.

[0051] (1) When the delayed door closing function is used, the delay knob 24 is rotated clockwise, and the delay knob 24 drives the eccentric cam 23 and the rotating shaft of the timer 22 to rotate, and the eccentric cam 23 drives the slider 31 to move downward, and the ejector pin of the toggle spring ejector pin 34 on the slider 31 moves downward along the ejector pin slideway 326 on the inner side of the housing 1;

[0052] At the same time, the shoulder of the spring ejector 34 is stuck in the rectangular groove 324 on the rear surface of the compression slide rail 32, driving the compression slide rail 32 to move downward, and the inclined surfaces of the inverted trapezoidal holes 323 symmetrical on both sides of the upper part of the compression slide rail 32 press the slide pin 571, so that the slide pin 571 moves toward the front panel 14 of the shell 1 (i.e., moves to the right) along the oblong hole slideway 572 on the left panel 15 and the right panel 16 of the shell 1, thereby making the slide pad 57 connected to the slide pin 571, the positioning support 58 fixed to the position of the slide pad 57, and the clamp 56 all move toward the front panel 14 of the shell 1 (i.e., move to the right), and then the third compression spring 53 is compressed, and the special-shaped hole 561 on the clamp 56 reaches the position of the clamping groove 521 on the needle shaft of the button spring ejector 52;

[0053] At the same time, since the slider 31 has moved downward, the lower end of the trigger fork 42 has no support, and then the torsion spring on the axle pin 552 of the pressing card 55 releases the elastic force, driving the lower ends of the two deformed inverted L-shaped knots 551 pressing the card 55 to move downward and retract inward, and the lower ends of the deformed inverted L-shaped structures 551 retract inward so that the middle two sides of the outer periphery of the trigger slide pad 41 are fixed by the two deformed inverted L-shaped structures 551. After the lower end of the deformed inverted L-shaped structure 551 moves downward, it pushes the trigger fork 42 to move downward, because the lower part of the card 56 is connected to the lower end of the trigger fork 42 through a connecting shaft. At this time, the trigger fork 42 moves downward, driving the special-shaped hole 561 of the card 56 to move downward and then snap into the slot 521 on the needle shaft of the button spring ejector 52.

[0054] (2) Continue to rotate the delay knob 24 clockwise. When the ejector pin of the spring ejector pin 34 slides downward along the ejector pin slideway 326 on the housing 1 until it is released from the inclined surface at the lower end of the ejector pin slideway 326, the shoulder of the spring ejector pin 34 is released from the rectangular groove 324 on the rear surface of the compression slide rail 32. The compression slide rail 32 is restored to its initial position under the action of the second compression spring 322.

[0055] (3) Stop rotating the delay knob 24 clockwise, the timer 22 starts timing, and the shaft of the timer 22 drives the eccentric cam 23 to rotate counterclockwise, and the eccentric cam 23 drives the delay knob 24 to rotate counterclockwise;

[0056] At the same time, the eccentric cam 23 drives the slider 31 to move upward (i.e., move away from the timer 22) until the slider 31 contacts the lower end of the card 56 and continues to move upward, gradually pushing the card 56 upward. Since the card 56 and the trigger fork 42 are coaxially connected, the gradual upward movement of the card 56 also drives the trigger fork 42 to gradually move upward. The upper end of the trigger fork 42 gradually pushes the lower ends of the two deformed inverted L-shaped structures 551 of the pressing card 55 to move upward. The two deformed inverted L-shaped structures 551 open to both sides, the position fixation of the trigger slide pad 41 is released, and the button spring ejector 52 is released. At this time, the special-shaped hole 561 of the card 56 has not yet disengaged from the button. The slot 521 on the needle shaft of the spring ejector 52 and the sliding pins 571 on both sides of the sliding pad 57 are still located at the rightmost end of the oblong hole slideway 572 (i.e., the end closer to the front panel 14). After the button spring ejector 52 is released, under the elastic force of the fourth compression spring 54, the button spring ejector 52 drives the needle shaft, the sliding pad 57, and the positioning support 58 of the button spring ejector 52 to gradually move to the left along the oblong hole slideway 572 (i.e., the end closer to the rear panel 13). When the positioning support 58 moves to contact the inner side of the rear panel 13, the needle shaft of the button spring ejector 52 has passed through the circular hole 132 on the rear panel 13, and the door closing button is pressed, and the door begins to close.

[0057] (4) Under the action of the timer 22, the shaft of the timer 22 continues to rotate counterclockwise. Figure 8 (7) The slider 31 continues to move upward, and the slider 31 continues to push the clamp 56 upward, so that the special-shaped hole 561 of the clamp 56 disengages from the clamping groove 521 on the needle shaft of the button spring ejector 52. The elastic force of the third compression spring 53 is released. Under the action of the third compression spring 53, the positioning support 58 and the button spring ejector 52 are pressed against the rear panel 13 and the button 51 respectively. At this time, the button spring ejector 52 and the button 51 are reset, and the positioning support 58, the sliding pad 57, and the clamp 56 are also reset.

[0058] The third case: start the delayed door opening function

[0059] The working process of the delayed door opening function is similar to that of the second case.

[0060] Installation of the delayed door opening and closing device for EMU doors of the present invention:

[0061] When used for delaying the door closing time, the delayed door opening and closing device is installed on the door closing button 6 through the mounting bracket 131. After the delayed door opening and closing device is triggered, the needle shaft of the button spring ejector 52 can eventually press the door closing button 6;

[0062] The same applies to the delay of the door opening button.

[0063] The components described in the present invention can be replaced by other shapes and structures as long as the functions described in the present invention can be achieved.

[0064] The above contents are further detailed descriptions of the present invention in combination with specific preferred embodiments, and the specific implementation of the present invention cannot be limited to these descriptions. For ordinary technicians in the field to which the present invention belongs, several simple deductions or substitutions can be made without departing from the concept of the present invention, which should be regarded as falling within the protection scope of the present invention.

Claims

1. A delayed door opening and closing device for EMU doors, characterized in that: The invention comprises a housing (1), a time-delay mechanism (2), a transmission mechanism (3), a trigger mechanism (4), and a pressing mechanism (5); the time-delay mechanism (2) is arranged at the lower part of the housing (1); the trigger mechanism (4) and the pressing mechanism (5) are arranged at the upper part of the housing (1); the time-delay mechanism (2) is connected to the transmission mechanism (3); the transmission mechanism (3) is connected to the trigger mechanism (4); and the trigger mechanism (4) is connected to the pressing mechanism (5); The time delay mechanism (2) comprises a timer bracket (21), a timer (22), an eccentric cam (23), and a time delay knob (24); the timer bracket (21) is mounted inside the housing (1); the timer (22) is mounted on the timer bracket (21); the timer (22) is located between the rear panel (13) of the housing (1) and the timer bracket (21); the rotating shaft of the timer (22) passes through the timer bracket (21) and is connected to the eccentric cam (23); a time delay knob mounting hole for mounting the time delay knob (24) is provided on the front panel (14) of the housing (1); the time delay knob (24) is mounted on the eccentric cam (23) outside the housing (1) through the time delay knob mounting hole; The transmission mechanism (3) comprises a slider (31), a compression slide rail (32), a first compression spring (33), and a toggle spring ejector pin (34); the slider (31) is arranged between a timer bracket (21) and a front panel (14) of a housing (1); the slider (31) is an inverted L-shaped structure, comprising a horizontal portion (311) and a vertical portion (312); a long circular hole (313) is arranged in the middle of the vertical portion (312); the long circular hole (313) of the vertical portion (312) is sleeved on an eccentric cam (23) A spring mounting hole is provided at the upper part of the vertical portion (312), and a first compression spring (33) and a toggle spring ejector (34) are installed in the spring mounting hole. The toggle spring ejector (34) is composed of a shoulder and an ejector located at the top of the shoulder. A spring mounting groove is provided at the axial bottom of the shoulder of the toggle spring ejector (34). One end of the first compression spring (33) is pressed against the bottom of the spring mounting hole, and the other end of the first compression spring (33) is pressed against the spring mounting groove at the axial bottom of the toggle spring ejector (34); The trigger mechanism (4) comprises a trigger slide pad (41) and a trigger shift fork (42); the pressing mechanism (5) comprises a button (51), a button spring ejector pin (52), a third compression spring (53), a fourth compression spring (54), a pressing clamp (55), a clamp (56), a slide pad (57), and a positioning support (58); the button (51) is sleeved with the fourth compression spring (54), the trigger slide pad (41), and the trigger shift fork (42); a button mounting hole is provided on the upper portion of the front panel (14) of the housing (1); the button (51) is mounted on the outside of the housing (1) through the button mounting hole; the fourth compression spring (54) is located between the trigger slide pad (41) and the housing (1); the trigger slide pad (41) is an annular structure; and the trigger shift fork (42) is a U-shaped structure.

2. The delayed door opening and closing device for EMU doors according to claim 1 is characterized in that: The housing (1) comprises a top panel (11), a bottom panel (12), a rear panel (13), a front panel (14), a left side panel (15), and a right side panel (16); a mounting bracket (131) for device installation is arranged on the periphery of the rear panel (13).

3. The delayed door opening and closing device for EMU doors according to claim 2 is characterized in that: The compression slide rail (32) is a special-shaped structure. The compression slide rail (32) is installed between the slider (31) and the front panel (14) of the housing (1). The compression slide rail (32) is provided with a guide groove (321) for guiding the sliding direction of the eccentric shaft of the eccentric cam (23). A rectangular groove (324) is provided on the rear surface of the compression slide rail (32) above the guide groove (321). A pin sliding groove (325) for passing through the pin of the toggle spring pin (34) is provided on the front surface of the compression slide rail (32) having the rectangular groove (324). The guide groove (321) is connected to the pin sliding groove (325). The shoulder of the toggle spring pin (34) is stuck in the rectangular groove (324). The pin of the toggle spring pin (34) is located in the pin sliding groove (325). The compression slide rail (32) is symmetrically provided with A second compression spring (322) is arranged, and the second compression spring (322) is located on both sides of the guide groove (321). The inner surface of the front panel (14) of the shell (1) is provided with a spring accommodating cavity for accommodating the second compression spring (322). When the compression slide rail (32) moves downward, the second compression spring (322) will be compressed in the spring accommodating cavity. Inverted trapezoidal holes (323) are symmetrically arranged on both sides of the upper part of the compression slide rail (32). The inner surface of the front panel (14) of the shell (1) is provided with an ejector slideway (326), and the lower end of the ejector slideway (326) is an inclined surface. When the slider (31) moves downward, the ejector pin of the movable spring ejector pin (34) slides downward along the ejector slideway (326) on the shell (1) until it escapes from the inclined surface at the lower end of the ejector slideway (326).

4. The delayed door opening and closing device for EMU doors according to claim 2 is characterized in that: The pressing card (55) is a pair of symmetrically arranged deformed inverted L-shaped structures (551) whose one ends are hinged via an axle pin (552), and the axle pin (552) is provided with a torsion spring. Two positioning pins (554) are symmetrically arranged on the inner side of one hinged end of the deformed inverted L-shaped structure (551), and the positioning pins (554) and the axle pin (552) are both fixed to the inner side of the front panel (14) of the housing (1). The other ends of the two deformed inverted L-shaped structures (551) are respectively located on both sides of the middle part of the outer periphery of the trigger slide pad (41). The trigger fork (42) is respectively in contact with the upper end of the trigger fork (42). The lower end of the U-shaped structure of the trigger fork (42) is connected to the lower part of the clamp (56) through a connecting shaft. The clamp (56) can move along the connecting shaft. When the deformed inverted L-shaped structure (551) is retracted inwardly under the action of the torsion spring, the lower end of the deformed inverted L-shaped structure (551) moves downward to push the trigger fork (42) downward. At the same time, under the action of the torsion spring, the two sides of the middle part of the outer periphery of the trigger slide pad (41) are clamped by the deformed inverted L-shaped structure (551).

5. The delayed door opening and closing device for EMU doors according to claim 4 is characterized in that: A button spring ejector (52) is installed in the button (51), and a third compression spring (53), a sliding pad (57), a clamping piece (56), and a positioning support (58) are sequentially sleeved on the needle shaft of the button spring ejector (52), wherein a clamping groove (521) for fixing the clamping piece (56) is provided in the middle of the needle shaft of the button spring ejector (52) sleeved with the third compression spring (53), and a clamping piece groove (573) for accommodating the clamping piece (56) is provided on the sliding pad (57). ), the lower surface of the sliding pad (57) is fixedly connected to the upper surface of the positioning support (58), the clamping member (56) is located in the clamping member groove (573) between the sliding pad (57) and the positioning support (58), the third compression spring (53) presses the positioning support (58) and the button spring ejector pin (52) against the rear panel (13) and the button (51) of the housing (1), respectively, and the elastic coefficient of the third compression spring (53) is greater than the elastic coefficient of the fourth compression spring (54).

6. The delayed door opening and closing device for EMU doors according to claim 5 is characterized in that: The clamp (56) is provided with a special-shaped hole (561), the inner diameter (D1) of the upper part of the special-shaped hole (561) is smaller than the diameter (D2) of the needle shaft of the button spring ejector (52), the inner diameter (D3) of the lower part of the special-shaped hole (561) is larger than the diameter (D2) of the needle shaft of the button spring ejector (52), the hole in the upper part of the special-shaped hole (561) can be clamped in the clamping groove (521) on the button spring ejector (52), the needle shaft of the button spring ejector (52) can slide in the hole in the lower part of the special-shaped hole (561), and the lower end of the clamp (56) contacts the horizontal part (311) of the slider (31).

7. The delayed door opening and closing device for EMU doors according to claim 6 is characterized in that: The slide pad (57) is a cylindrical structure. Two slide pins (571) are symmetrically arranged in the middle of the two outer side surfaces of the slide pad (57). The left panel (15) and the right panel (16) of the housing (1) are symmetrically provided with oblong hole slideways (572) for positioning the sliding direction of the slide pins (571). The slide pins (571) pass through the inverted trapezoidal holes (323) of the compression slide rail (32) and are positioned in the oblong hole slideways (572). ) slide; the positioning support (58) is a hollow cylindrical structure, a circular hole (132) for the needle shaft of the button spring ejector (52) to pass through is provided on the rear panel (13) of the shell (1), and a pressing card slide groove (553) for the lower end of the pressing card (55) to slide is symmetrically provided on the left panel (15) and the right panel (16) of the shell (1), and the axial direction of the oblong hole slideway (572) is perpendicular to the axial direction of the pressing card slide groove (553).

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