An integrated cross-latch cover-type passenger emergency brake handle

Abstract

An integrated cross-latch cover-type passenger emergency brake handle comprises a turtle-back cover for installation on a vehicle end wall panel, a base fixedly connected to the inner side of the turtle-back cover, an installation cavity for installing a wing-shaped vertical latch, a handle, and a rack-type transverse latch is formed between the turtle-back cover and the base, a four-corner lock sleeve and a clamping nut are installed on the upper left side of the turtle-back cover, the wing-shaped vertical latch is fixedly connected to the handle, a spring seat plate is installed on the lower end surface of the base, two return springs are arranged between the wing-shaped vertical latch and the spring seat plate, a flange slider is installed on the bottom back of the wing-shaped vertical latch, a spring baffle is installed on the left side of the base, a small return spring is arranged between the spring baffle and the rack-type transverse latch, a rotatable gear-type return rod is also arranged on the four-corner lock sleeve, the gear-type return rod can form a meshing structure with the rack-type transverse latch, a quick-acting switch is fixed on the back of the base, and when the handle is pulled down and moved, the flange slider is driven to touch the quick-acting switch to realize the sending of a brake request signal.

Description

Technical Field

[0001] The invention relates to an integrated cross-latch cover type passenger emergency brake handle. Background Art

[0002] The high-speed trains and some subway vehicles currently in use are equipped with passenger emergency brakes, which can be pulled by passengers or crew members in an emergency. The emergency brakes send an alarm signal to the driver, who decides whether to stop the train within three seconds based on the road and vehicle conditions. If the driver does not decide after three seconds, the train will automatically brake to stop, so that the entire train can stop quickly and safely.

[0003] During the normal operation of the train, some emergency situations may occasionally occur in the passenger compartment and the train needs to stop. However, in many cases the driver is unaware of these situations and is therefore unable to stop the train. As a result, emergencies involving passengers cannot be handled in a timely manner, causing endless troubles.

[0004] The disadvantage of the current emergency brake pull gate is that most of them need to be equipped with a decorative box or cover. There are three types of emergency brake pull box cover assemblies. One is a decorative box without a cover, one uses an elastic cover structure, and one uses a decorative box and a cover with a breakable cover. Some vehicles use a split turtleback cover type emergency brake pull gate.

[0005] The shortcomings of the current emergency brake gates: one has only a decorative box but no cover, which can easily cause passengers to mistakenly operate the emergency brake gate due to the gate being exposed, causing the train to stop for no reason, affecting the safety of train operations. One adopts an elastic cover structure. When operating the elastic cover body, it is necessary to first pull the upper end of the elastic cover body out of the upper slide and then pull it out, then press it down out of the lower slide and remove the elastic cover body before operating the emergency brake gate. The operation steps are extremely cumbersome. In an emergency, passengers may be delayed and affect the timeliness of operating the emergency brake gate, affecting the safety of train operations. One adopts a decorative box and cover with a breakable cover. The cover can only be used once and is easily broken by accidental collision or long-term vibration and impact.

[0006] When the above-mentioned emergency brake is installed on the vehicle, it is necessary to add a slide groove on the vehicle wall panel, first remove the handle assembly from the handle seat, connect the base of the emergency brake to the bracket with fasteners, then install the bracket on the slide groove on the vehicle wall panel with fasteners, and then install the handle assembly back with fasteners. The fastener installation space is extremely narrow and the operation is very difficult. Then install the decorative box on the bracket with fasteners, and then install the cover on the decorative box with fasteners. It requires multiple people to install, and the installation is cumbersome. With the addition of brackets, decorative boxes and covers, the overall weight reaches 2.5Kg, which does not meet the requirements of lightweight and is also costly.

[0007] The disadvantages of the current cover-type emergency brake are: the cover and the base are separate installation structures. When installing on the vehicle, it is necessary to add a slide groove on the vehicle wall panel. First, remove the cover from the base, then remove the handle from the handle seat, connect the base of the emergency brake with the bracket with fasteners, then install the bracket on the slide groove on the vehicle wall panel with fasteners, then install the handle on the handle seat with fasteners, and then install the cover back with fasteners. It requires multiple people to install, the installation is cumbersome, and the total weight reaches 2.2Kg with the additional bracket, which does not meet the requirements of lightweight and is also costly.

[0008] The base is suspended for installation, which requires additional mounting brackets, making installation more troublesome and heavier overall. When installing the emergency brake on the vehicle, the cover must be removed first and the two sides of the wall panel are separated and installed by fasteners, which is more troublesome to assemble and requires multiple people to install.

[0009] The above-mentioned emergency brakes currently mentioned all use a handle that is sleeved on the pillar of the handle seat. When the handle is pulled, the handle seat will tend to tilt. When the handle seat slides downward, the top and bottom surfaces of the handle seat are in edge contact with the base and the protective cover, which greatly increases the friction. In severe dry friction, the lock position is easily stuck or stuck, which will result in the inability to implement emergency braking in an emergency, posing a great risk to safety.

[0010] A pull fork is provided between the reset rod and the slide rod of the current emergency brake. A concave-convex gear transmission structure is adopted between the reset rod and the pull fork, and a gear and rack transmission structure is adopted between the pull fork and the slide rod. The pin position where the slide rod and the pull fork are in contact with each other is in a vacant state, which is very easy to deflect during operation. In addition, the mechanism has multi-stage transmission, which is very easy to get stuck or jammed, which will result in the inability to implement emergency braking when an emergency occurs, posing a great risk to safety. Summary of the invention

[0011] In view of the shortcomings existing in the above problems, the present invention provides an integrated cross-latch cover-type passenger emergency brake handle.

[0012] To achieve the above-mentioned purpose, the present invention provides an integrated cross-latch cover-type passenger emergency brake handle, comprising a turtle-back cover for installation on a vehicle end wall plate, a base fixedly connected to the inner side of the turtle-back cover, an installation cavity for installing a wing-shaped vertical latch, a handle, and a rack-type transverse latch is formed between the turtle-back cover and the base, a four-corner lock sleeve and a compression nut are installed on the upper left side of the turtle-back cover, the wing-shaped vertical latch is fixedly connected to the handle, a spring seat plate is installed on the lower end surface of the base, and the wing-shaped vertical latch and the spring seat plate are connected. Two return springs are arranged in between, the back side of the bottom of the wing-shaped vertical latch is installed with a flange slider, a spring baffle is installed on the left side of the base, a small return spring is arranged between the spring baffle and the rack-type transverse latch, and a rotatable gear-type return rod is also arranged on the four-corner lock sleeve, the gear-type return rod can form a meshing structure with the rack-type transverse latch, a quick-acting switch is fixed on the back of the base, and when the handle is pulled down, it drives the flange slider to touch the quick-acting switch, thereby sending a brake request signal.

[0013] Furthermore, a locking washer, a hexagonal nut, a flat washer, a self-locking washer and a hexagon socket countersunk screw are installed on the back of the upper right side of the base for grounding, and a grounding mark plate is pasted on the upper right back of the base.

[0014] Furthermore, the wing-shaped vertical latch and the handle are connected as a whole by a hexagon socket countersunk screw.

[0015] Furthermore, the spring seat plate is fixed to the base by means of hexagon socket countersunk screws.

[0016] Furthermore, the flange slider is fixed to the wing-shaped vertical bolt by a hexagon socket countersunk screw.

[0017] Furthermore, the spring baffle is fixed to the base by a hexagon socket countersunk screw.

[0018] Furthermore, two elastic cylindrical pins are installed on the base, and are installed on the turtleback cover by hexagon socket countersunk screws of two lengths.

[0019] Furthermore, the quick-acting switch is fixed to the base by hexagonal bolts behind an insulating plate, and a terminal number identification plate is provided on the quick-acting switch.

[0020] Furthermore, an exposed lead sealing line and a lead seal are provided near the left side of the tortoise shell cover and the handle.

[0021] The beneficial effects of the present invention compared to the prior art are:

[0022] The integrated cross-bolt cover-type passenger emergency brake handle does not require additional decorative boxes and cover parts; the turtle cover and the base are self-contained, and the turtle cover and the vehicle end wall panel are installed by fasteners. The wall panel can be installed regardless of thickness. The threaded holes on the back of the turtle cover can be installed on the back, and no additional mounting bracket is required for installation, which is lightweight, simple and convenient for disassembly and maintenance; it is driven by a single-stage gear rack, and uses a plane operation to reduce or avoid the risk of stagnation or jamming caused by the loss of direction. It has a beautiful appearance, a long service life, and improves the reliability of the emergency brake. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A front view of the integrated cross-latch cover-type passenger emergency brake handle involved;

[0024] Figure 2 A rear view of the integrated cross-latch cover-type passenger emergency brake handle involved;

[0025] Figure 3 A schematic diagram of the integrated cross-latch cover-type passenger emergency brake handle involved;

[0026] Figure 4 for Figure 3 Explosion diagram of

[0027] Figure 5 for Figure 3 Explosion diagram of

[0028] Figure 6 A side view of the integrated cross-latch cover-type passenger emergency brake handle involved;

[0029] Figure 7 The control principle diagram of the integrated cross-latch cover-type passenger emergency brake handle involved;

[0030] Figure 8 The figure is a schematic diagram of the installation of the integrated cross-latch cover-type passenger emergency brake handle involved;

[0031] Fig. 9 It is a front view of the current cover-type emergency brake pull door;

[0032] Fig.10 It is a schematic diagram of the current cover-type emergency brake pull-out;

[0033] Fig.11 A side view of the current cover-type emergency brake pull gate;

[0034] Fig.12 It is the control principle diagram of the current cover-type emergency brake pull-off;

[0035] Fig.13A front view of another existing cover-type emergency brake pull gate;

[0036] Fig.14 A side view of another type of currently used cover-type emergency brake pull gate;

[0037] Fig.15 A top view of another existing cover-type emergency brake pull gate

[0038] Fig.16 A rear view of another existing cover-type emergency brake after installation;

[0039] Fig.17 This is a front view of the emergency brake of the current standardized EMU;

[0040] Fig.18 This is a schematic diagram of the emergency brake of the current standardized EMU;

[0041] Fig.19 This is the installation diagram of the emergency brake of the current standardized EMU;

[0042] Fig. 20 This is the structural assembly diagram of the current standardized EMU decorative box and cover;

[0043] Fig.21 Schematic diagram of vehicle assembly for emergency brake pull of standardized EMU;

[0044] Fig. 22 Schematic diagram of vehicle assembly for emergency brake pull of standardized EMU;

[0045] Figures 1 to 8 Middle: 1. Turtle cover; 2. Four-corner lock sleeve; 3. Compression nut; 4. Base; 5. Handle; 6. Spring seat plate; 7. Hexagon socket countersunk screw; 8. Wing-shaped vertical latch; 9. Hexagon socket countersunk screw; 10. Reset spring; 11. Hexagon socket countersunk screw; 12. Flange slider; 13. Rack-type transverse latch; 14. Spring baffle; 15. Hexagon socket countersunk screw; 16. Small reset spring; 17. Gear-type reset lever; 18. Elastic cylindrical pin; 19. Hexagon socket countersunk screw; 20. Hexagon socket countersunk screw; 21. Anti-loosening washer; 22. Hexagon nut; 23. Flat washer; 24. Self-locking washer; 25. Hexagon socket countersunk screw; 26. Snap-action switch; 27. Insulating plate; 28. Hexagon head bolt; 29. ​​Terminal number identification plate; 30. Grounding mark plate; 31. Lead seal wire; 32. Lead seal; 33. Wallboard; 34. Reinforcement pad;

[0046] Figures 9 to 12In: a1, base; a2, reset rod; a3, shift fork; a4, slide rod spring; a5, slide rod; a6, handle seat; a7, hexagonal bolt; a8, snap switch; a9, insulation plate; a10, grounding mark; a11, reset spring; a12, cover; a13, handle; a14, nameplate; a15, shift fork pin; a16, hexagon socket set screw; a17, hexagon socket countersunk screw; a18, anti-loosening washer; a19, hexagonal nut; a20, flat washer; a21, self-locking washer; a22, hexagon socket countersunk screw; a23, hexagon socket screw; a24, anti-loosening washer; a25, upper terminal number identification plate; a26, lower left terminal number identification plate; a27, lower right terminal number identification plate; a28, cover; a29, hexagon socket countersunk screw; a30, hexagon socket countersunk screw; a31, slider; a32, locking sleeve; a33, anti-loosening washer; a34, hexagon thin nut;

[0047] Figures 13-16 In: b1, base; b2, bracket; b3, bolt base plate; b4, wall plate; b5, fastener; b22, hexagon socket countersunk screw; b23, hexagon socket screw; b24, anti-loosening washer; b28, cover; b29, hexagon socket countersunk screw;

[0048] Figures 17 to 19 In: c1, base; c2, reset rod; c3, shift fork; c4, slide rod spring; c5, slide rod; c6, handle seat; c7, hexagonal bolt; c8, snap switch; c9, insulating plate; c10, reset spring; c11, protective cover; c12, handle; c13, shift fork pin; c14, hexagon socket set screw; c15, hexagon socket countersunk screw; c16, hexagon nut; c17, self-locking washer; c18, flat washer; c19, anti-loosening washer; c20, hexagon socket countersunk screw; c21, hexagon socket screw; c22, anti-loosening washer; c23, hexagon socket screw; c24, anti-loosening washer;

[0049] Fig. 20 Middle: d1, decorative box; d2, cover; d3, angle seat; d4, hexagon socket countersunk screw;

[0050] Fig.21 , 22 Middle: e1, decorative box; e2, cover; e3, emergency brake pull body; e4, hexagon socket countersunk screw; e5, vehicle wall panel; e6, bracket; e7, slide; e8, fastener; e12, handle; e23, hexagon socket screw; e24, anti-loosening washer;

[0051] Figure 7 , 12 In the figure, F is a representation of the direction of the force in physical terms. Figure 7 , Fig.12The control principle diagram is shown in the figure. The numbers in the figure are the actual contact marks of the snap-action switch and are not the reference marks of the patent. Figure 2 , Figure 5 , Fig. 9 , Fig.10 The marks 1-1, 1-2, etc. in the figure are not part of the patent's figure marks. DETAILED DESCRIPTION

[0052] like Figures 1 to 8 As shown, an integrated cross-latch cover-type passenger emergency brake handle of an embodiment of the present invention comprises a turtle cover 1 for installation on a vehicle end wall plate 33, a base 4 fixedly connected to the inner side of the turtle cover 1, an installation cavity for installing a wing-shaped vertical latch 8, a handle 5, and a rack-type transverse latch 13 is formed between the turtle cover 1 and the base 4, a four-corner lock sleeve 2 and a compression nut 3 are installed on the upper left side of the turtle cover 1, the wing-shaped vertical latch 8 is fixedly connected to the handle 5, a spring seat plate 6 is installed on the lower end surface of the base 4, and the wing-shaped vertical latch 8 is fixedly connected to the handle 5. Two return springs 10 are arranged between the latch 8 and the spring seat plate 6, the bottom back of the wing-shaped vertical latch 8 is equipped with a flange slider 12, a spring baffle 14 is installed on the left side of the base 4, and a small return spring 16 is arranged between the spring baffle 14 and the rack-type transverse latch 13. A rotatable gear-type return lever 17 is also arranged on the four-corner lock sleeve 2, and the gear-type return lever 17 can form a meshing structure with the rack-type transverse latch 13. A quick-acting switch 26 is fixed on the back of the base 4, which drives the handle 5 to move when it is pulled down. The flange slider 12 touches the quick-acting switch 26 to send a brake request signal; the back of the upper right end of the base 4 is equipped with a locking washer 21, a hexagonal nut 22, a flat washer 23, a self-locking washer 24 and a hexagon socket countersunk screw 25 for grounding, and a grounding mark 30 is pasted on the upper right back of the base 4; the wing-shaped vertical latch 8 and the handle 5 are connected as a whole by a hexagon socket countersunk screw 9; the spring seat plate 6 is fixed to the base 4 by a hexagon socket countersunk screw 7; the flange slider 12 is fixed to the base 4 by a hexagon socket countersunk screw 1 1 is fixed on the wing-shaped vertical latch 8; the spring baffle 14 is fixed on the base 4 by the hexagon socket countersunk screw 15; two elastic cylindrical pins 18 are installed on the base 4, and are installed on the turtle cover 1 by the hexagon socket countersunk screw 19 and the hexagon socket countersunk screw 20; the quick-acting switch 26 is fixed to the base 4 by the hexagonal head bolt 28 after being padded with the insulating plate 27, and the quick-acting switch 26 is provided with a terminal number identification plate 29; the turtle cover 1 and the handle 5 are provided with an exposed lead seal line 31 and a lead seal 32 near the left side.

[0053] The integrated cross-bolt cover-type passenger emergency brake handle does not require additional decorative boxes and cover parts; the turtle cover and the base are self-contained, and the turtle cover and the vehicle end wall panel are installed by fasteners. The wall panel can be installed regardless of thickness. The threaded holes on the back of the turtle cover can be installed on the back, and no additional mounting bracket is required for installation, which is lightweight, simple and convenient for disassembly and maintenance; it is driven by a single-stage gear rack, and uses a plane operation to reduce or avoid the risk of stagnation or jamming caused by the loss of direction. It has a beautiful appearance, a long service life, and improves the reliability of the emergency brake.

[0054] In order to facilitate the understanding of the present invention, the following description is given in conjunction with the accompanying drawings during specific use;

[0055] When an emergency occurs and the train needs to be stopped, the passenger or crew member pulls down the handle 5 of the emergency brake. When the left side of the wing-shaped vertical latch 8 disengages from the convex step surface of the rack-type transverse latch 13, the rack-type transverse latch 13 slides to the right under the elastic force of the small reset spring 16. When the rack-type transverse latch 13 slides into the bayonet of the wing-shaped vertical latch 8, the wing-shaped vertical latch 8, the handle 5 and the flange slider 12 combination are locked in the emergency braking state position. At the same time, the right inclined surface of the flange slider 12 on the back of the wing-shaped vertical latch 8 touches the quick-acting switch 26 to trigger the action of the mechanism, providing two pairs of normally open contacts and two pairs of normally closed contacts for use by the signal system. The quick-acting switch 26 outputs an alarm signal to the driver's cab. The driver decides whether to stop the train within three seconds. If the driver does not deal with it after three seconds, the train will automatically brake to stop, so that the entire train can stop quickly and safely. When the emergency situation is relieved, the four-corner lock sleeve 2 can be used to turn the gear-type reset rod 17 clockwise by about 25 degrees, and the gear-type reset rod 17 drives the rack-type transverse latch 13 to slide to the left. When the convex step surface of the rack-type transverse latch 13 exits the left side of the wing-shaped vertical latch 8, the wing-shaped vertical latch 8, the handle 5 and the flange slider 12 assembly move upward under the elastic force of the reset spring 10, and the upper end surfaces of the two wings of the wing-shaped vertical latch 8 are blocked by the base 4. The left side of the wing-shaped vertical latch 8 is against the convex step surface of the rack-type transverse latch 13. At the same time, the right inclined surface of the flange slider 12 on the back of the wing-shaped vertical latch 8 leaves the trigger mechanism of the quick-acting switch 26, and the quick-acting switch 26 is reset to release the alarm signal. After resetting, the train can continue to travel normally.

[0056] The advantages of the present invention are:

[0057] When the emergency brake is pulled, two pairs of normally open contacts and two pairs of normally closed contacts are provided for the signal system to use. The emergency brake will send an alarm signal to the driver, who will decide whether to stop the train within three seconds based on the road and vehicle conditions. If the driver does not decide after three seconds, the train will automatically brake to stop, so that the entire train can stop quickly and safely.

[0058] The gear-type reset rod adopts a small-width gear type, and the rack-type transverse latch adopts a 3-tooth rack type. Emergency braking and relief operations are both performed with a single-stage meshing mechanical transmission of the gap gear and the rack, which reduces the number of transmission stages and completely avoids sticking or locking, making it safer, more reliable and durable.

[0059] The wing-shaped vertical latch and the rack-type horizontal latch adopt a unique cross-bridge concave-convex latch interlocking structure, which has smooth operation and accurate and reliable locking position, greatly reducing the coordination space of the action, reducing the space area covered by the base, and allowing the base to be installed through the wall.

[0060] The wing-shaped vertical latch and the rack-type horizontal latch adopt a unique cross-shaped bridge concave-convex latch interlocking structure. The handle and the wing-shaped vertical latch are L-shaped and connected into one by the fastener plane, forming a planar force during emergency braking and relief operations, and no tilting force is generated, which solves the risk of sticking or jamming caused by the force tendency force of the current emergency brake handle seat support.

[0061] The tortoise shell cover made of metal is assembled into an integrated body with the base and its parts. The small base enables the tortoise shell cover to have a large external hanging area, increases the contact area between the tortoise shell cover and the vehicle wall panel for installation, and enables a rectangular opening with chamfered corners to be opened on the wall panel. The base can pass through the wall, and the exposed surface of the tortoise shell cover contacts the wall panel. A reinforcing pad is provided on the back of the wall panel, and is directly installed by fasteners. Thick wall panels can be installed. Threaded holes are provided on the back of the tortoise shell cover to achieve back-mounting. No additional mounting bracket is required for installation, thereby achieving lightweight. The total configuration weight is less than 1.5Kg, and disassembly and assembly and maintenance are simple and convenient.

[0062] A lead seal hole is provided on the left side of the emergency brake pull handle near the turtleback cover, and an exposed lead seal line and lead seal are installed, which is convenient for disassembly and assembly, and is helpful for drivers and passengers to check the status of the emergency brake pull handle.

[0063] In order to further understand the creativity of this solution, the disadvantages of the existing emergency brake are described in detail as follows:

[0064] Figures 9-11 This is the structural assembly diagram of the current cover-type emergency brake pull gate. Figures 13-16 The vehicle assembly method of the cover-type emergency brake pull is that the cover and the base are split installation structures. When installing with the vehicle, it is necessary to add a slide groove on the vehicle wall panel, first remove the cover from the base, then remove the handle from the handle seat, connect the base of the emergency brake pull with the bracket with fasteners, then install the bracket on the slide groove of the vehicle wall panel with fasteners, then install the handle on the handle seat with fasteners, and then install the cover back with fasteners. It requires multiple people to install, the installation is cumbersome, and the total weight reaches 2.2Kg with the additional bracket, which does not meet the requirements of lightweight, and the cost is high.

[0065] Emergency brakes all use a handle that is placed on the pillar of the handle seat. When the handle is pulled, the handle seat will tend to tilt. When the handle seat slides downward, the top and bottom surfaces of the handle seat will be in edge contact with the base and cover, which greatly increases the friction. In case of severe dry friction, the lock position is prone to jamming or jamming, which will result in the inability to implement emergency braking in an emergency, posing a great risk to safety.

[0066] A pull fork is provided between the reset rod and the sliding rod of the emergency brake. A concave-convex gear transmission structure is adopted between the reset rod and the pull fork, and a gear and rack transmission structure is adopted between the pull fork and the sliding rod. The pin position where the sliding rod and the pull fork are in contact with each other is in a vacant state, which is very easy to deflect during operation. The transmission mechanism has multi-stage transmission, which is very easy to get stuck or stuck, which will result in the inability to implement emergency braking when an emergency occurs, posing a great risk to safety.

[0067] Figure 17~Figure 19 This is the structural assembly diagram of the current standardized EMU emergency brake pull. Fig. 20 The structural assembly diagram of the current standardized EMU decorative box and cover, Fig.21 , Fig. 22 The schematic diagram of the vehicle assembly for emergency braking of a standardized EMU is that it is equipped with a decorative box and a cover with a breakable cover. The cover can only be used once and is easily broken by accidental collision or vibration impact caused by long-term operation.

[0068] When installing it on the vehicle, it is necessary to add a slide groove on the vehicle wall panel, first remove the handle assembly from the handle seat, connect the base of the emergency brake puller to the bracket with fasteners, then install the bracket on the slide groove on the vehicle wall panel with fasteners, and then install the handle assembly back with fasteners. The fastener installation space is extremely narrow and the operation is very difficult. Then install the decorative box on the bracket with fasteners, and then install the cover on the decorative box with fasteners. It requires multiple people to install, and the installation is cumbersome. With the addition of the bracket, decorative box and cover, the total weight reaches 2.5Kg, which does not meet the requirements of lightweight and is also costly.

[0069] Emergency brakes all use a handle that is placed on the pillar of the handle seat. When the handle is pulled, the handle seat will tend to tilt. When the handle seat slides downward, the top and bottom surfaces of the handle seat will be in edge contact with the base and cover, which greatly increases the friction. In case of severe dry friction, the lock position is prone to jamming or jamming, which will result in the inability to implement emergency braking in an emergency, posing a great risk to safety.

[0070] A pull fork is provided between the reset rod and the sliding rod of the emergency brake. A concave-convex gear transmission structure is adopted between the reset rod and the pull fork, and a gear and rack transmission structure is adopted between the pull fork and the sliding rod. The pin position where the sliding rod and the pull fork are in contact with each other is in a vacant state, which is very easy to deflect during operation. The transmission mechanism has multi-stage transmission, which is very easy to get stuck or stuck, which will result in the inability to implement emergency braking when an emergency occurs, posing a great risk to safety.

[0071] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An integrated cross-latch cover-type passenger emergency brake handle, characterized in that: The invention comprises a tortoise-back cover (1) for installation on a vehicle end wall plate (33), a base (4) fixedly connected to the inner side of the tortoise-back cover (1), a mounting cavity for installing a wing-shaped vertical latch (8), a handle (5), and a rack-type transverse latch (13) is formed between the tortoise-back cover (1) and the base (4), a four-corner lock sleeve (2) and a clamping nut (3) are installed on the upper left side of the tortoise-back cover (1), the wing-shaped vertical latch (8) is fixedly connected to the handle (5), a spring seat plate (6) is installed on the lower end surface of the base (4), two return springs (10) are arranged between the wing-shaped vertical latch (8) and the spring seat plate (6), and a flange slider (12) is installed on the bottom back of the wing-shaped vertical latch (8), A spring baffle (14) is installed on the left side of the base (4), and a small reset spring (16) is arranged between the spring baffle (14) and the rack-type transverse latch (13), so that the convex step surface of the rack-type transverse latch (13) can slide into the bayonet of the wing-shaped vertical latch (8). A rotatable gear-type reset rod (17) is also arranged on the four-corner lock sleeve (2), and the gear-type reset rod (17) can form a meshing structure with the rack-type transverse latch (13). A quick-acting switch (26) is fixed on the back of the base (4). When the handle (5) is pulled down, it drives the flange slider (12) to touch the quick-acting switch (26), thereby sending a brake request signal.

2. The integrated cross-latch cover-type passenger emergency brake handle according to claim 1, characterized in that: The back of the upper right end of the base (4) is provided with a locking washer (21), a hexagonal nut (22), a flat washer (23), a self-locking washer (24) and a hexagon socket countersunk screw (25) for grounding, and a grounding sign (30) is affixed to the upper right back of the base (4).

3. The integrated cross-latch cover-type passenger emergency brake handle according to claim 1, characterized in that: The wing-shaped vertical latch (8) and the handle (5) are connected as a whole by a hexagon socket countersunk screw (9).

4. The integrated cross-latch cover-type passenger emergency brake handle according to claim 1, characterized in that: The spring seat plate (6) is fixed to the base (4) by means of hexagon socket countersunk screws (7).

5. The integrated cross-latch cover-type passenger emergency brake handle according to claim 1, characterized in that: The flange slider (12) is fixed to the wing-shaped vertical latch (8) by a hexagon socket countersunk screw (11).

6. The integrated cross-latch cover-type passenger emergency brake handle according to claim 1, characterized in that: The spring baffle (14) is fixed to the base (4) by means of a hexagon socket countersunk screw (15).

7. The integrated cross-latch cover-type passenger emergency brake handle according to claim 1, characterized in that: Two elastic cylindrical pins (18) are installed on the base (4), and are installed on the turtleback cover (1) by means of hexagon socket countersunk screws (19) and hexagon socket countersunk screws (20).

8. The integrated cross-latch cover-type passenger emergency brake handle according to claim 1, characterized in that: The snap-action switch (26) is padded with an insulating plate (27) and then fixed to the base (4) by a hexagonal bolt (28). A terminal number identification plate (29) is provided on the snap-action switch (26).

9. The integrated cross-latch cover-type passenger emergency brake handle according to claim 1, characterized in that: An exposed lead seal line (31) and a lead seal (32) are provided near the left side of the tortoise shell cover (1) and the handle (5).

Images