Cab door lock device for rail transit vehicle

Abstract

The utility model provides a cab door lock device for a rail transit vehicle, which belongs to the technical field of door locks and comprises a shell, a locking piece, a main lock component and an auxiliary lock component, the shell is provided with a containing cavity, the main lock component comprises a main lock shifting block and a main lock bolt, and the auxiliary lock component comprises an auxiliary lock shifting block and an auxiliary lock bolt. The door lock device comprises the main lock assembly and the auxiliary lock assembly, rotation of the main lock shifting block is limited through the auxiliary lock shifting block, the main lock shifting block cannot drive the main lock bolt to retract, the interval between the auxiliary lock shifting block and the main lock shifting block is strictly controlled, the locking effect can be guaranteed, and clamping stagnation can be avoided.

Description

TECHNICAL FIELD

[0001] The utility model belongs to door lock technical field relates to a driver's room door lock device for rail transit vehicle. BACKGROUND

[0002] At present, the driver's room side door system of rail transit vehicle mostly contains electric single open sash door, manual built-in door and manual folding door three types, wherein the manual folding door is widely applied because of its better sealing performance, simple structure, low manufacturing cost and lowest operation failure rate, and the driver's room door lock as the core component of door system is also required more and more reliability, safety, maintainability and the like.

[0003] The existing driver's room door lock is different from the ordinary household door lock, and mostly contains two parts of main lock and auxiliary lock, and the auxiliary lock can lock the main lock to prevent the vehicle door from being opened by mistake.

[0004] In summary, although some existing technical solutions solve the problem of preventing the vehicle door from being opened by mistake, the auxiliary lock is prone to jamming and unreliable, and there is still a large room for improvement. SUMMARY

[0005] The utility model aims at the above -mentioned problem existing in prior art, proposes a driver's room door lock device for rail transit vehicle, which comprises:

[0006] The shell is provided with a containing cavity;

[0007] The lock piece is arranged on one side of the shell;

[0008] The main lock assembly is accommodated in the containing cavity, the main lock assembly comprises a main lock block and a main lock bolt, the main lock block is rotatably connected with the shell, the main lock bolt is movably connected with the shell, the main lock bolt can be connected with the lock piece outside the shell, and the main lock block can drive the main lock bolt to retract into the containing cavity.

[0009] The auxiliary lock assembly is accommodated in the containing cavity, the auxiliary lock assembly comprises an auxiliary lock block and an auxiliary lock bolt, the auxiliary lock block is rotatably connected with the shell, the auxiliary lock bolt is movably connected with the shell, the auxiliary lock bolt can be connected with the lock piece outside the shell, the auxiliary lock block can drive the main lock bolt to retract into the containing cavity, and the auxiliary lock block can be in contact with the main lock block.

[0010] In the driver's cabin door lock device for rail transit vehicle, a main lock driving element and an auxiliary lock driving element are further included, and the main lock driving element and the auxiliary lock driving element are arranged in the accommodating cavity, the main lock driving element can drive the main lock bolt to extend out of the shell, and the auxiliary lock driving element can drive the auxiliary lock bolt to extend out of the shell.

[0011] In the driver's cabin door lock device for rail transit vehicle, the main lock block is provided with a first block head and a first block tail, and the auxiliary lock block is provided with a second block head which can be in contact with the first block tail.

[0012] In the driver's cabin door lock device for rail transit vehicle, the main lock driving element is arranged as a main lock compression spring, the main lock bolt is provided with a first accommodating groove and a first contact surface, the main lock block is partially accommodated in the first accommodating groove, the main lock compression spring is accommodated in the first accommodating groove, one end of the main lock compression spring is connected to one side of the first accommodating groove, the other end of the main lock compression spring is connected to the main lock block, and when the main lock block rotates, the first block head can be in contact with the first contact surface.

[0013] In the driver's cabin door lock device for rail transit vehicle, the auxiliary lock driving element is arranged as an auxiliary lock compression spring, the auxiliary lock bolt is provided with a second accommodating groove and a second contact surface, the auxiliary lock block is partially accommodated in the second accommodating groove, the auxiliary lock compression spring is accommodated in the second accommodating groove, one end of the auxiliary lock compression spring is connected to one side of the second accommodating groove, the other end of the auxiliary lock compression spring is connected to the auxiliary lock block, and when the auxiliary lock block rotates, the second block head can be in contact with the second contact surface.

[0014] In the driver's cabin door lock device for rail transit vehicle, the first block tail is provided with a first arc surface, and the second block head is provided with a second arc surface which can be in contact with the first arc surface.

[0015] In the driver's cabin door lock device for rail transit vehicle, the second contact surface is arranged as a third arc surface which can be in contact with the second arc surface.

[0016] In the driver's cabin door lock device for rail transit vehicle, a reset element is further included, and the shell is further provided with a limiting column, and the reset element can drive the main lock block to rotate so that the first block head is in contact with the limiting column.

[0017] In the driver's cabin door lock device for rail transit vehicle, the reset member is a torsion spring, the torsion spring is sleeved on the main lock knob, one end of the torsion spring is connected with the main lock knob, and the other end of the torsion spring is connected with the shell.

[0018] In the driver's cabin door lock device for rail transit vehicle, the reset member is a torsion spring, the torsion spring is sleeved on the main lock knob, one end of the torsion spring is connected with the main lock knob, and the other end of the torsion spring is connected with the shell.

[0019] Compared with the prior art, the driver's cabin door lock device for rail transit vehicle has the beneficial effects that:

[0020] 1. The door lock device comprises a main lock assembly and an auxiliary lock assembly, the rotation of the main lock knob is limited by the auxiliary lock knob, so that the main lock knob cannot drive the main lock bolt to retract, and the spacing between the auxiliary lock knob and the main lock knob is strictly controlled, so that the locking effect is ensured and the jamming is avoided.

[0021] 2. The first arc surface and the second arc surface are arc-fitted, so that the first knob tail of the main lock knob and the second knob head of the auxiliary lock knob can be randomly rotated within a certain range before contact, the jamming between the two is avoided, and the stability of the two when fully contacting is ensured.

[0022] 3. The second contact surface is a third arc surface, when the auxiliary lock knob is rotated to the second arc surface and the third arc surface are in contact and fitted, the force provided by the auxiliary lock driving element and the normal pressure of the auxiliary lock bolt on the auxiliary lock knob are collinear, forming a dead point effect, so that the second arc surface cannot easily separate from the third arc surface when the auxiliary lock assembly is in the locked state, and the safety of the door lock is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 The utility model discloses a structure schematic diagram.

[0024] Figure 2 The utility model discloses an explosion drawing.

[0025] Figure 3 The utility model discloses a schematic diagram of the locked state.

[0026] Figure 4 The utility model discloses a schematic diagram of the unlocked state.

[0027] In the drawings:

[0028] 1, shell; 11, containing cavity; 12, limit column; 2, main lock assembly; 21, main lock block; 211, first block head; 212, first block tail; 2121, first arc surface; 22, main lock bolt; 221, first containing groove; 222, first contact surface; 23, main lock driving element; 3, auxiliary lock assembly; 31, auxiliary lock block; 311, second block head; 3111, second arc surface; 32, auxiliary lock bolt; 321, second containing groove; 322, third arc surface; 33, auxiliary lock driving element; 4, reset member; 5, main lock handle; 6, auxiliary lock handle. DETAILED DESCRIPTION

[0029] The following is a specific embodiment of the present application and in conjunction with the drawings, the technical scheme of the present application is further described, but the present application is not limited to these embodiments.

[0030] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present application are only used to explain the relative positional relationship, movement condition, etc. between the components in a certain posture (as shown in the drawings), if the specific posture changes, the directional indications also change accordingly.

[0031] In addition, in the present application, the description such as "first", "second", "one" and the like is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features, therefore, the features with "first", "second" can be explicitly or implicitly included at least one of the features, in the description of the present application, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise specifically limited.

[0032] In the present application, unless otherwise specifically defined and limited, the terms "connection", "fixing" and the like should be broadly understood, for example, "fixing" can be fixed connection, or detachable connection, or integral; can be mechanical connection, or electrical connection; can be directly connected, or indirectly connected through intermediate medium, can be the internal communication of two elements or the interaction relationship of two elements, unless otherwise specifically limited, the above-mentioned terms in the present application can be understood according to the specific meaning of the above-mentioned terms in the present application by the person skilled in the art.

[0033] In addition, the technical solutions of each embodiment of the present application can be combined with each other, but it must be based on the realization of the ordinary skilled in the art, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, also not within the scope of protection required by the present application.

[0034] The specific embodiments described herein are merely illustrative examples of this utility model patent. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or adopt similar methods to replace them, but without departing from the patent of this utility model or exceeding the scope defined by the appended claims.

[0035] like Figures 1-4 As shown, a driver's cab door lock device for rail transit vehicles includes: a housing 1, a lock stop (not shown in the figure), a main lock assembly 2, and an auxiliary lock assembly 3.

[0036] The housing 1 is provided with a receiving cavity 11.

[0037] The main lock assembly 2 is housed in the receiving cavity 11. The main lock assembly 2 includes a main lock lever 21 and a main lock bolt 22. The main lock lever 21 is rotatably connected to the housing 1, and the main lock bolt 22 is movably connected to the housing 1. The main lock bolt 22 can extend out of the housing 1 and connect with the lock stop. The main lock lever 21 can drive the main lock bolt 22 to retract into the receiving cavity 11.

[0038] The auxiliary lock assembly 3 is housed in the receiving cavity 11. The auxiliary lock assembly 3 includes an auxiliary lock lever 31 and an auxiliary lock tongue 32. The auxiliary lock lever 31 is rotatably connected to the housing 1, and the auxiliary lock tongue 32 is movably connected to the housing 1. The auxiliary lock tongue 32 can extend out of the housing 1 and connect with the lock stop. The auxiliary lock lever 31 can drive the main lock tongue 22 to retract into the receiving cavity 11, and the auxiliary lock lever 31 can contact the main lock lever 21.

[0039] Specifically, when the main lock tongue 22 extends out of the housing 1 and connects with the lock stop, the door lock device is in the closed state. When the auxiliary lock lever 31 is rotated to contact the main lock lever 21 and restrict the movement of the main lock lever 21, the main lock lever 21 cannot rotate, and the door lock device is in the locked state. When the auxiliary lock lever 31 is rotated to separate it from the main lock lever 21, the main lock lever 21 becomes rotatable, and the door lock device is in the unlocked state. If the main lock tongue 22 is retracted by rotating the main lock lever 21 and disengaged from the lock stop, the door lock device is in the open state.

[0040] In this embodiment, the door lock device includes two parts: a main lock assembly 2 and an auxiliary lock assembly 3. The rotation of the main lock assembly 21 is restricted by the auxiliary lock lever 31, so that the main lock lever 21 cannot drive the main lock bolt 22 to retract. The interval between the auxiliary lock lever 31 and the main lock lever 21 is strictly controlled, which can ensure the locking effect and avoid jamming.

[0041] like Figures 1-4As shown, based on the above embodiment, it also includes a main lock drive element 23 and an auxiliary lock drive element 33. The main lock drive element 23 and the auxiliary lock drive element 33 are both disposed in the receiving cavity 11. The main lock drive element 23 can drive the main lock tongue 22 to extend out of the housing 1, and the auxiliary lock drive element 33 can drive the auxiliary lock tongue 32 to extend out of the housing 1.

[0042] In this embodiment, the main lock drive element 23 and the auxiliary lock drive element 33 always provide thrust to the main lock bolt 22 and the auxiliary lock bolt 32. When no external force is applied, the main lock bolt 22 will extend out of the housing 1 and connect with the lock stop. When the main lock lever 21 is rotated, only a slight rotational force needs to be applied to the main lock lever 31 and the auxiliary lock lever 31 to make the main lock bolt 22 and the auxiliary lock bolt 32 retract against the thrust. This not only ensures the security of the door lock, but also improves the user experience.

[0043] like Figures 1-4 As shown, based on the above embodiment, the main lock lever 21 is provided with a first lever head 211 and a first lever tail 212, and the auxiliary lock lever 31 is provided with a second lever head 311, which can contact the first lever tail 212.

[0044] In this embodiment, by having the head 311 of the second lever contact the tail 212 of the first lever, the auxiliary locking lever 31 can provide a limiting force to the main locking lever 21, thereby achieving the purpose of limiting the rotation of the main locking lever 21.

[0045] like Figures 1-4 As shown, based on the above embodiment, the main lock drive element 23 is set as a main lock compression spring (not shown in the figure), the main lock tongue 22 is provided with a first receiving groove 221 and a first contact surface 222, the main lock lever 21 is partially received in the first receiving groove 221, the main lock compression spring is received in the first receiving groove 221, one end of the main lock compression spring is connected to one side of the first receiving groove 221, and the other end of the main lock compression spring is rotatably connected to the main lock lever 21. When the main lock lever 21 rotates, the head 211 of the first lever can contact the first contact surface 222.

[0046] Specifically, when the main lock lever 21 rotates, the first lever head 211 pushes the main lock tongue 22 to move during the rotation. Since the main lock lever 21 is partially accommodated in the first receiving groove 221, the main lock tongue 22 moves along the length direction of the first receiving groove 221. When the main lock lever 21 is rotated, the main lock tongue 22 can overcome the thrust of the main lock spring and retract, thereby separating from the lock stop and realizing the door opening.

[0047] In this embodiment, since part of the main lock lever 21 is housed in the first receiving groove 221, the main lock bolt 22 can move along a predetermined path, which not only improves the coordination and accuracy of the operation of the internal mechanism of the door lock, but also ensures the smoothness and efficiency of the door lock device in the opening and closing process.

[0048] like Figures 1-4 As shown, based on the above embodiment, the auxiliary lock drive element 33 is set as an auxiliary lock spring (not shown in the figure), the auxiliary lock tongue 32 is provided with a second receiving groove 321 and a second contact surface, the auxiliary lock lever 31 is partially received in the second receiving groove 321, the auxiliary lock spring is received in the second receiving groove 321, one end of the main lock spring is connected to one side of the second receiving groove 321, and the other end of the main lock spring is rotatably connected to the auxiliary lock lever 31. When the main lock lever 21 rotates, the head 311 of the second lever can contact the second contact surface.

[0049] Specifically, when the auxiliary lock lever 31 rotates, the second lever head 311 pushes the auxiliary lock tongue 32 to move during the rotation. Since the auxiliary lock lever 31 is partially accommodated in the second receiving groove 321, the auxiliary lock tongue 32 moves along the length direction of the second receiving groove 321.

[0050] In this embodiment, since part of the auxiliary lock lever 31 is housed in the second receiving groove 321, the auxiliary lock tongue 32 can move along a predetermined path. This not only improves the coordination and accuracy of the operation of the internal mechanism of the door lock, ensuring the smoothness and efficiency of the door lock device during opening and closing, but also, since the two ends of the auxiliary lock spring are respectively connected to the auxiliary lock lever 31 and one side of the second receiving groove 321, when the head 311 of the second lever contacts the second contact surface, the auxiliary lock spring provides positive pressure to the auxiliary lock lever 31 toward the second contact surface, so that the auxiliary lock assembly 3 can remain in the unlocked state.

[0051] like Figures 1-4 As shown, based on the above embodiment, the tail portion 212 of the first lever is provided with a first arc surface 2121, and the head portion 311 of the second lever is provided with a second arc surface 3111, the second arc surface 3111 being able to contact the first arc surface 2121.

[0052] In this embodiment, since the first arc surface 2121 and the second arc surface 3111 are arc-fitted, the tail 212 of the first block of the main lock block 21 and the head 311 of the second block of the auxiliary lock block 31 can rotate freely within a certain range before they come into contact, thus avoiding jamming between the two during rotation and ensuring the stability of the two when they are in full contact.

[0053] like Figures 1-4As shown, based on the above embodiment, the second contact surface is set as a third arc surface 322, and the second arc surface 3111 can contact the third arc surface 322.

[0054] In this embodiment, the second contact surface is the third arc surface 322. When the auxiliary lock lever 31 rotates to the point where the second arc surface 3111 contacts and engages with the third arc surface 322, the force provided by the auxiliary lock drive element 33 and the positive pressure of the auxiliary lock tongue 32 on the auxiliary lock lever 31 are collinear, forming a dead point effect. This ensures that when the auxiliary lock assembly 3 is in the locked state, the second arc surface 3111 will not easily separate from the third arc surface 322, thus ensuring the security of the door lock.

[0055] like Figures 1-4 As shown, based on the above embodiment, a reset member 4 is also included. The housing 1 is also provided with a limiting post 12. The reset member 4 can drive the main lock block 21 to rotate, so that the first block head 211 contacts the limiting post 12.

[0056] In this embodiment, the reset member 4 drives the main lock lever 21 to rotate until the main lock lever 21 contacts the limiting post 12. At this time, the main lock lever 21 cannot interfere with the main lock bolt 22. Under the action of the main lock drive element 23, the main lock bolt 22 can connect with the lock stop member, thereby achieving the purpose of locking the door.

[0057] like Figures 1-4 As shown, based on the above embodiment, the reset member 4 is a torsion spring, which is sleeved on the main lock block 21, and one end of the torsion spring is connected to the main lock block 21, while the other end of the torsion spring is connected to the housing 1.

[0058] Specifically, since the torsion spring has a preload, it is pre-installed on the main lock block 21 before installation.

[0059] In this embodiment, since the reset member 4 is a torsion spring, it can provide a large torque in the narrow space of the door lock device, so that the main lock lever 21 can be reset quickly. At the same time, the torsion spring has good fatigue resistance and can maintain its shape and function under long-term repeated torsion. Since it was originally installed with the main lock lever 21 and then installed inside the door lock device, the preload of the torsion spring is prevented from interfering with the installation process.

[0060] like Figures 1-4 As shown, based on the above embodiment, it also includes a main lock handle 5 and an auxiliary lock handle 6. The main lock handle 5 and the auxiliary lock handle 6 are both disposed on the outside of the housing 1. The main lock handle 5 is coaxially connected to the main lock lever 21, and the auxiliary lock handle 6 is coaxially connected to the auxiliary lock lever 31.

[0061] Specifically, when the main lock handle 5 is turned, the main lock lever 21 rotates accordingly, and when the auxiliary lock handle 6 is turned, the auxiliary lock lever 31 rotates accordingly. Therefore, when the auxiliary lock handle 6 is turned and the auxiliary lock lever 31 comes into contact with the main lock lever 21, the main lock lever 21 cannot rotate at this time, and the main lock handle 5 also cannot rotate.

[0062] In this embodiment, the main lock handle 5 and the auxiliary lock handle 6, as transmission components, can better drive the door lock device, thus optimizing the user experience.

Claims

1. A driver's cab door lock device for rail transit vehicles, characterized in that, include: The housing has a receiving cavity; A locking element is disposed on one side of the housing; A main lock assembly is housed in the receiving cavity. The main lock assembly includes a main lock lever and a main lock bolt. The main lock lever is rotatably connected to the housing, and the main lock bolt is movably connected to the housing. The main lock bolt can extend out of the housing and connect to the lock stop. The main lock lever can drive the main lock bolt to retract into the receiving cavity. An auxiliary locking assembly is housed in the receiving cavity. The auxiliary locking assembly includes an auxiliary locking lever and an auxiliary locking bolt. The auxiliary locking lever is rotatably connected to the housing, and the auxiliary locking bolt is movably connected to the housing. The auxiliary locking bolt can extend out of the housing and connect with the locking stop. The auxiliary locking lever can drive the main locking bolt to retract into the receiving cavity, and the auxiliary locking lever can contact the main locking lever.

2. The driver's cab door lock device for rail transit vehicles as described in claim 1, characterized in that: It also includes a main lock drive element and an auxiliary lock drive element, both of which are disposed in the receiving cavity. The main lock drive element can drive the main lock tongue to extend out of the housing, and the auxiliary lock drive element can drive the auxiliary lock tongue to extend out of the housing.

3. A driver's cab door lock device for rail transit vehicles as described in claim 2, characterized in that: The main lock lever is provided with a first lever head and a first lever tail, and the auxiliary lock lever is provided with a second lever head, which can contact the first lever tail.

4. A driver's cab door lock device for rail transit vehicles as described in claim 3, characterized in that: The main lock drive element is configured as a main lock compression spring. The main lock tongue is provided with a first receiving groove and a first contact surface. The main lock lever is partially received in the first receiving groove. The main lock compression spring is received in the first receiving groove. One end of the main lock compression spring is connected to one side of the first receiving groove. The other end of the main lock compression spring is rotatably connected to the main lock lever. When the main lock lever rotates, the head of the first lever can contact the first contact surface.

5. A driver's cab door lock device for rail transit vehicles as described in claim 4, characterized in that: The auxiliary lock driving element is configured as an auxiliary lock compression spring. The auxiliary lock tongue is provided with a second receiving groove and a second contact surface. The auxiliary lock lever is partially received in the second receiving groove. The auxiliary lock compression spring is received in the second receiving groove. One end of the main lock compression spring is connected to one side of the second receiving groove. The other end of the main lock compression spring is rotatably connected to the auxiliary lock lever. When the main lock lever rotates, the head of the second lever can contact the second contact surface.

6. A driver's cab door lock device for rail transit vehicles as described in claim 5, characterized in that: The first lever has a first arc surface at its tail end and the second lever has a second arc surface at its head, the second arc surface being able to contact the first arc surface.

7. A driver's cab door lock device for rail transit vehicles as described in claim 6, characterized in that: The second contact surface is configured as a third arc surface, and the second arc surface can contact the third arc surface.

8. A driver's cab door lock device for rail transit vehicles as described in claim 3, characterized in that: It also includes a reset component, and the housing is further provided with a limit post. The reset component can drive the main lock block to rotate, so that the head of the first block contacts the limit post.

9. A driver's cab door lock device for rail transit vehicles as described in claim 8, characterized in that: The reset element is a torsion spring, which is sleeved on the main lock block. One end of the torsion spring is connected to the main lock block, and the other end of the torsion spring is connected to the housing.

10. A driver's cab door lock device for rail transit vehicles as described in claim 1, characterized in that: It also includes a main lock handle and an auxiliary lock handle. Both the main lock handle and the auxiliary lock handle are located on the outside of the housing. The main lock handle and the main lock lever are coaxially connected, and the auxiliary lock handle and the auxiliary lock lever are coaxially connected.

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