A push-pull door inside and outside door lock mechanism and an engineering vehicle

Abstract

The present invention relates to a sliding door internal / external opening locking mechanism, aiming to address the prior art technical problem of the inability to simultaneously control both the primary and auxiliary locks of sliding doors from either the inside or outside of the vehicle body. The mechanism comprises an internal opening assembly, an external opening assembly, and a second rocker arm, the second rocker arm being transmission-connected to both the internal and external opening assemblies. The primary and auxiliary locks can be simultaneously unlocked by driving the second rocker arm via the internal or external opening assembly. The present invention also provides an engineering vehicle comprising a sliding door and the aforementioned internal / external opening locking mechanism for the sliding door. The present invention improves the convenience of unlocking the primary and auxiliary locks.

Description

Technical Field

[0001] The invention relates to an inner and outer door opening locking mechanism for a sliding door and an engineering vehicle, belonging to the technical field of engineering vehicles. Background Art

[0002] At present, the internal and external door lock mechanisms of the vehicle operating room sliding door are basically divided into two categories:

[0003] One type of sliding door internal and external locking mechanism has a main lock that holds the door closed and uses a simple gravity limiter to keep the door open. For example, a protrusion is provided on the sliding door track so that a specific structure on the sliding door cannot return to its original position after passing over the protrusion. This type of sliding door internal and external locking mechanism requires additional manpower to open the door, which is quite inconvenient to use.

[0004] Another type of sliding door has a secondary lock in addition to the main lock for keeping the sliding door open, but it is inconvenient to use because there are too many switches and mistakes can easily occur.

[0005] The information disclosed in this background section is only intended to enhance understanding of the overall background of the invention and should not be considered as an admission or any form of suggestion that the information constitutes the prior art already known to a person of ordinary skill in the art. Summary of the Invention

[0006] The purpose of the present invention is to overcome the deficiencies in the prior art and provide a sliding door inner and outer door lock mechanism and an engineering vehicle, wherein the outer opening switch and the inner opening switch can simultaneously control the main lock and the auxiliary lock, thereby improving functionality and convenience of use.

[0007] In order to achieve the above objectives / solve the above technical problems, the present invention is implemented by adopting the following technical solutions:

[0008] In a first aspect, a sliding door lock mechanism for opening inside and outside includes a main lock, an auxiliary lock, an outside opening assembly, and an inside opening assembly. When the sliding door is closed, the main lock remains locked, while when the sliding door is opened, the auxiliary lock remains locked.

[0009] It also includes a second rocker arm 32, which unlocks the main lock and the auxiliary lock through a transmission connection;

[0010] The outward opening assembly includes an outward opening switch 13 and a first rocker arm 31. The first rocker arm 31 is in transmission connection with the outward opening switch 13. The second rocker arm 32 is in transmission connection with the first rocker arm 31. The outward opening switch 13 controls the first rocker arm 31 and the second rocker arm 32 through the transmission connection.

[0011] The outer opening switch 13 performs an unlocking action, causing the first rocker arm 31 to move, and the first rocker arm 31 drives the second rocker arm 32 to move synchronously to unlock the main lock and the auxiliary lock;

[0012] The inner opening assembly includes an inner opening switch 21 and a third rocker arm 33. The third rocker arm 33 is transmission-connected to the inner opening switch 21. The third rocker arm 33 is transmission-connected to the second rocker arm 32. The inner opening switch 21 controls the third rocker arm 33 and the second rocker arm 32 through the transmission connection.

[0013] The inner opening switch 21 performs an unlocking action according to a first predetermined mode, causing the third rocker arm 33 to act in accordance with the first predetermined mode, and the third rocker arm 33 drives the second rocker arm 32 to synchronously unlock the main lock and the auxiliary lock;

[0014] Through the above technical solution, it is possible to unlock the main lock and the auxiliary lock simultaneously using the inner opening switch 21 or the outer opening switch 13.

[0015] In combination with the first aspect, further, a sliding door inner and outer opening lock mechanism further includes a fourth rocker arm 34, which is transmission-connected to the third rocker arm 33, and the fourth rocker arm 34 controls the auxiliary lock by transmission connection with the auxiliary lock, and the inner opening switch 21 controls the third rocker arm 33 by transmission connection to control the fourth rocker arm 34;

[0016] The inner opening switch 21 performs the unlocking action according to the second predetermined method, so that the third rocker arm 33 acts corresponding to the second predetermined method, and the third rocker arm 33 drives the fourth rocker arm 34 to synchronously unlock the auxiliary lock, thereby realizing that the inner opening switch 21 unlocks the auxiliary lock alone.

[0017] In combination with the first aspect, further, a sliding door inner and outer door opening lock mechanism further includes a lock cylinder and a fifth rocker arm 35 transmission-connected to the lock cylinder, the fifth rocker arm 35 transmission-connected to the first rocker arm 31 and capable of limiting the first rocker arm 31;

[0018] When the lock cylinder is in the locked state, the fifth rocker arm 35 keeps limiting the first rocker arm 31, and the first rocker arm 31 cannot transmit power to the second rocker arm 32, and thus the first rocker arm 31 cannot unlock the primary lock and the auxiliary lock through the transmission connection;

[0019] When the lock cylinder is in the unlocked state, the fifth rocker arm 35 releases the limit on the first rocker arm 31, and the first rocker arm 31 is transmission-connected with the second rocker arm 32, so that the first rocker arm 31 can unlock the main lock and the auxiliary lock through the transmission connection;

[0020] The outward opening switch 13 controls the first rocker arm 31 through a transmission connection. Through the above technical solution, it is possible to use the lock core to prohibit or allow the unlocking action of the outward opening switch 13.

[0021] In combination with the first aspect, further, a sliding door inside and outside opening lock mechanism further includes a motor 37, a sixth rocker arm 36 drivingly connected to the output shaft of the motor 37, and a fifth rocker arm 35 drivingly connected to the sixth rocker arm 36, the fifth rocker arm 35 drivingly connected to the first rocker arm 31 and capable of limiting the first rocker arm 31, that is, the motor 37 controls the first rocker arm 31 through the driving connection;

[0022] The motor 37 is connected to the remote control terminal signal and can execute the operation of the remote control terminal signal;

[0023] When the locking operation is performed in response to the remote control terminal signal, the motor 37 causes the sixth rocker arm 36 to move in the first direction via the output shaft. The sixth rocker arm 36 drives the fifth rocker arm 35. The fifth rocker arm 35 limits the first rocker arm 31. The first rocker arm 31 cannot transmit power to the second rocker arm 32. As a result, the first rocker arm 31 cannot unlock the primary lock and the auxiliary lock through the transmission connection.

[0024] When responding to the unlocking operation of the remote control terminal signal, the motor 37 causes the sixth rocker arm 36 to move in the second direction through the output shaft. The sixth rocker arm 36 drives the fifth rocker arm 35. The fifth rocker arm 35 releases the limit on the first rocker arm 31. The first rocker arm 31 is connected to the second rocker arm 32 through transmission connection. Then, the first rocker arm 31 can unlock the main lock and the auxiliary lock through the transmission connection.

[0025] The outward opening switch 13 controls the first rocker arm 31 through a transmission connection. Through the above technical solution, the remote control terminal signal can prohibit or allow the unlocking action of the outward opening switch 13.

[0026] In combination with the first aspect, further, the transmission connection of the auxiliary lock relies on: a first pull wire 71, a second pull wire 72 and a third pull wire 73;

[0027] The auxiliary lock is sequentially connected to the fourth rocker arm 34 via the third pull wire 73 and the first pull wire 71, and the auxiliary lock is also sequentially connected to the second rocker arm 32 via the third pull wire 73 and the second pull wire 72.

[0028] The fourth rocker arm 34 and the second rocker arm 32 can be connected to the auxiliary lock through the above technical solution to unlock the auxiliary lock.

[0029] In combination with the first aspect, further, a sliding door internal and external opening lock mechanism further includes a junction box, including a housing 61, a piston block 62 that can move back and forth in the housing 61, a first pull wire 71, a second pull wire 72, and a third pull wire 73 are all connected to the piston block 62, and the first pull wire 71 and the second pull wire 72 are located at the same end of the housing 61;

[0030] When the first pull wire 71 or the second pull wire 72 pulls the piston block 62 to move toward one end of the housing 61 , the piston block 62 pulls the third pull wire 73 to move synchronously, thereby achieving the first pull wire 71 or the second pull wire 72 pulling the third pull wire 73 .

[0031] In combination with the first aspect, further, the housing 61 is provided with an elastic reset member for pushing the third pull wire 73 to reset.

[0032] When the first pulling wire 71 or the second pulling wire 72 stops pulling the piston block 62 , the elastic return member pulls the third pulling wire 73 to restore the third pulling wire 73 and the piston block 62 to the positions before being pulled.

[0033] In combination with the first aspect, further, the outward opening component also includes a fifth pull wire 75, and the first rocker arm 31 is transmission-connected to the outward opening switch 13 via the fifth pull wire 75, so that the outward opening switch 13 controls the movement of the first rocker arm 31.

[0034] In combination with the first aspect, further, the inward opening assembly further includes a second pull rod 77 and a connecting rod 22;

[0035] The two ends of the second pull rod 77 are respectively hinged to the third rocker arm 33 and the connecting rod 22. The connecting rod 22 is transmission-connected to the inner-opening switch 21. The inner-opening switch 21 controls the movement of the third rocker arm 33 through the transmission connection between the second pull rod 77 and the connecting rod 22.

[0036] In combination with the first aspect, further, the lock core is connected to the fifth rocker arm 35 through the first pull rod 76 to realize the control of the movement of the fifth rocker arm 35.

[0037] In a second aspect, an engineering vehicle comprises the sliding door inner and outer door locking mechanism as described in any one of the first aspects.

[0038] Compared with the prior art, the present invention has the following beneficial effects:

[0039] The inner and outer opening door lock mechanism for sliding doors provided in the embodiment of the present invention includes an outer opening component, an inner opening component and a second rocker arm. The second rocker arm is respectively connected to the outer opening component and the inner opening component in a transmission manner. The second rocker arm is connected to the main lock and the auxiliary lock in a transmission manner. The main lock and the auxiliary lock can be unlocked synchronously through any one of the outer opening component and the inner opening component, which greatly improves the unlocking convenience of the main and auxiliary locks. Compared with the existing technology, the inner and outer opening door lock mechanism for sliding doors provided in the embodiment of the present invention can be configured with only one outer opening switch and one inner opening switch, which reduces the number of operating handles, has better operability, and can reduce the incidence of misoperation. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1This is a schematic structural diagram of the inner and outer door opening locking mechanism of a sliding door provided by an embodiment of the present invention when the sliding door is in a fully locked state;

[0041] Figure 2 This is a schematic structural diagram of the inner and outer door opening lock mechanism of a sliding door provided by an embodiment of the present invention when the sliding door is in a fully open state;

[0042] Figure 3 yes Figure 1 A schematic diagram of the structure of the internal and external door lock mechanism for the sliding door in the state shown;

[0043] Figure 4 yes Figure 2 A schematic diagram of the structure of the internal and external door lock mechanism for the sliding door in the state shown;

[0044] Figure 5 This is a schematic diagram of unlocking an outward-opening switch provided by an embodiment of the present invention;

[0045] Figure 6 is a schematic diagram of an inward-opening switch provided by an embodiment of the present invention being unlocked in a first predetermined manner;

[0046] Figure 7 is a schematic diagram of an inward-opening switch provided by an embodiment of the present invention being unlocked in a second predetermined manner;

[0047] Figure 8 This is a schematic diagram of a structure in which a lock core is used to lock an outward-opening switch according to an embodiment of the present invention;

[0048] Figure 9 This is a structural diagram of a junction box provided by an embodiment of the present invention;

[0049] Figure 10 This is a schematic diagram of a structure in which a motor is used to lock an outward-opening switch according to an embodiment of the present invention;

[0050] In the figure: 1-outward opening assembly; 11-outward opening handle; 12-lock cylinder; 13-outward opening switch; 2-inward opening assembly; 21-inward opening switch; 22-connecting rod; 3-reversing mechanism; 31-first rocker arm; 32-second rocker arm; 33-third rocker arm; 34-fourth rocker arm; 35-fifth rocker arm; 36-sixth rocker arm; 37-motor; 41-main lock; 42-main lock cylinder; 51-auxiliary lock; 52-auxiliary lock cylinder; 6-junction box; 61-housing; 62 -Piston block; 63-spring; 7-cable rod; 71-first cable; 711-first cable connector; 712-first cable sheath; 72-second cable; 721-second cable connector; 722-second cable sheath; 73-third cable; 731-third cable connector; 732-third cable sheath; 74-fourth cable; 75-fifth cable; 76-first pull rod; 77-second pull rod; 8-sliding door; 9-guide rail; 10-carriage. DETAILED DESCRIPTION

[0051] The technical solution of the present invention is described in detail below through the accompanying drawings and specific embodiments. It should be understood that the embodiments of the present application and the specific features in the embodiments are detailed descriptions of the technical solution of the present application, rather than limitations on the technical solution of the present application. Unless there is a conflict, the embodiments of the present application and the technical features in the embodiments can be combined with each other.

[0052] Example 1

[0053] refer to Figure 1 and Figure 2 In the crane control room shown, a sliding door 8 slides back and forth on a guide rail 9 provided on a vehicle body 10. The vehicle body 10 is provided with a primary lock cylinder 42 and an auxiliary lock cylinder 52. A sliding door internal and external door opening locking mechanism is provided within the sliding door 8, including a primary lock 41 and an auxiliary lock 51.

[0054] When the sliding door 8 is closed, the main lock 41 and the main lock cylinder 42 remain locked, and when the sliding door 8 is fully opened, the auxiliary lock 51 and the auxiliary lock cylinder 52 remain locked.

[0055] The sliding door lock mechanism for both inside and outside openings provided in an embodiment of the present invention is applicable to the aforementioned sliding door structure and includes an outside opening assembly, an inside opening assembly, and a second rocker arm 32 in transmission connection with the primary lock 41 and the auxiliary lock 51. The second rocker arm 32 is driven to operate, thereby achieving simultaneous unlocking of the primary lock 41 and the auxiliary lock 51. The outside opening assembly enables unlocking of the primary lock 41 and the auxiliary lock 51 from outside the vehicle body 10, while the inside opening assembly enables unlocking of the primary lock 41 and the auxiliary lock 51 from inside the vehicle body 10.

[0056] For details, see Figure 3 、 Figure 4The outward opening assembly includes an outward opening switch 13 and a first rocker arm 31, which are respectively connected to the outward opening switch 13 and the second rocker arm 32. When an unlocking driving force is applied to the outward opening switch 13, the unlocking driving force can be transmitted to the main lock 41 and the auxiliary lock 51 through the first rocker arm 31 and the second rocker arm 32, so that the main lock 41 and the auxiliary lock 51 are both separated from the corresponding lock cylinders, thereby achieving the unlocking operation of the main lock 41 and the auxiliary lock 51. The inward opening assembly includes an inward opening switch 21 and a third rocker arm 33, which are respectively connected to the inward opening switch 21 and the second rocker arm 32. When an unlocking driving force is applied to the inward opening switch 21, the unlocking driving force can be transmitted to the main lock 41 and the auxiliary lock 51 through the third rocker arm 33 and the second rocker arm 32, so that the main lock 41 and the auxiliary lock 51 are both separated from the corresponding lock cylinders, thereby achieving the unlocking operation of the main lock 41 and the auxiliary lock 51. Under normal circumstances, only one of the main lock 41 and the auxiliary lock 51 remains in the locked state, and no distinction is made in this application. The unlocking driving force applied to the outward opening switch 13 or the inward opening switch 21 is usually only a momentary operation, and the driving force can be removed after unlocking.

[0057] It should be noted that in this application, the "transmission connection" can be a direct transmission connection or an indirect transmission connection through multiple intermediate parts. For example, the outward opening component can also include a fifth pull wire 75, and the first rocker arm 31 can be transmission-connected to the outward opening switch 13 through the fifth pull wire 75. The inward opening component can also include a second pull rod 77 and a connecting rod 22. The two ends of the second pull rod 77 are respectively hinged to the third rocker arm 33 and the connecting rod 22, and the connecting rod 22 is transmission-connected to the inward opening switch 21. Figure 5 or Figure 6 , and also includes a fourth pull wire 74 that is transmission-connected to the main lock 41, and the second rocker arm 32 is transmission-connected to the fourth pull wire 74 and the second pull wire 72 respectively. The second rocker arm 32 drives the fourth pull wire 74 to pull the main lock 41 as shown by the arrow, thereby unlocking the main lock 41. The second rocker arm 32 also drives the second pull wire 72 to pull the third pull wire 73 as shown by the arrow, and the third pull wire 73 pulls the auxiliary lock 51 as shown by the arrow, thereby unlocking the auxiliary lock 51.

[0058] The direction of the unlocking driving force applied by the outward opening switch 13 and the inner opening switch 21 can be set according to the application needs of the scene: As an embodiment of the present invention, when the unlocking driving force is applied according to the scene Figure 5 When the outer opening switch 13 is pressed downward as shown by the arrow, the fifth pull wire 75 is pulled in the direction of the arrow, driving the first rocker arm 31 to rotate counterclockwise around O', and then driving the second rocker arm 32 to rotate clockwise around O'', the main lock 41 and the auxiliary lock 51 are both disengaged from the corresponding lock cylinders, that is, the unlocking operation is completed by the outer opening switch; when the outer opening switch is pressed downward as shown by the arrow, the fifth pull wire 75 is pulled in the direction of the arrow, driving the first rocker arm 31 to rotate counterclockwise around O', and then driving the second rocker arm 32 to rotate clockwise around O'', and the main lock 41 and the auxiliary lock 51 are both disengaged from the corresponding lock cylinders, that is, the unlocking operation is completed by the outer opening switch; Figure 6When the inner opening switch 21 is pulled backward as shown by the arrow, the connecting rod 22 rotates counterclockwise around O''', thereby driving the pull rod 77 to move backward. The pull rod 77 further drives the third rocker arm 33 to rotate clockwise around O'', driving the second rocker arm 32 to rotate clockwise around O''. The main lock 41 and the auxiliary lock 51 are also disengaged from the corresponding lock columns, that is, the unlocking operation is completed by the inner opening switch.

[0059] In order to prevent the outward-opening switch from getting rusted due to water ingress in an external environment and to prevent the outward-opening switch from protruding from the vehicle body and being easily damaged by collision, an embodiment of the present invention provides a structure recessed into the vehicle body on the sliding door, which not only provides an installation space for the outward-opening switch 13, but also forms an outward-opening handle 11.

[0060] In summary, the sliding door inner and outer opening lock mechanism provided by the embodiment of the present invention includes an outer opening component and an inner opening component. The unlocking operation of the main lock 41 and the auxiliary lock 51 can be realized outside the vehicle body through the outer opening component, and the unlocking operation of the main lock 41 and the auxiliary lock 51 can be realized inside the vehicle body through the inner opening component, which greatly improves the unlocking convenience of the main and auxiliary locks. Compared with the existing technology, the number of operating handles in the vehicle is reduced, it has better operability, and can reduce the incidence of misoperation.

[0061] Example 2:

[0062] The sliding door lock mechanism provided in this embodiment of the present invention provides a technical solution for unlocking the auxiliary lock in a second predetermined manner when the inner opening switch is operated, compared to the first embodiment. That is, when the inner opening switch is operated in a different unlocking manner than the first embodiment, only the auxiliary lock is unlocked. The details are as follows:

[0063] See also Figure 7 The sliding door lock mechanism provided by the embodiment of the present invention further includes a fourth rocker arm 34 connected to the auxiliary lock 51, and the fourth rocker arm 34 is connected to the third rocker arm 33 and the first pull wire 71 respectively. Figure 7 When the inward-opening switch 21 is pushed forward as shown by the arrow, the connecting rod 22 rotates clockwise around O''', thereby driving the second pull rod 77, and the second pull rod 77 drives the third rocker arm 33 to rotate counterclockwise around O'', and drives the fourth rocker arm 34 to rotate counterclockwise around O''. The fourth rocker arm 34 pulls the third pull wire 73 as shown by the arrow by pulling the first pull wire 71, and the third pull wire 73 pulls the auxiliary lock 51 as shown by the arrow, thereby realizing the auxiliary lock 51 being unlocked separately by pushing the inward-opening switch 21 forward.

[0064] When the sliding door 8 is opened, the auxiliary lock 51 and the auxiliary lock column 52 remain locked. At this time, the operator in the cab can unlock the auxiliary lock 51 by pushing the inner opening switch 21 forward, which is more in line with the operating habits of general operators and further improves the convenience of unlocking.

[0065] In order to realize the independent unlocking control of the auxiliary lock, the embodiment of the present invention is provided with a first pull wire 71 for the auxiliary lock. The first pull wire 71 and the second pull wire 72 are independent of each other and are both connected to the auxiliary lock at the same time. When one of the first pull wire 71 and the second pull wire 72 is actuated, the auxiliary lock unlocking operation can be realized. Specifically, a third pull wire 73 connected to the auxiliary lock can be provided. The third pull wire is connected to the fourth rocker arm 34 through the first pull wire 71. At the same time, the third pull wire is connected to the second rocker arm (32) through the second pull wire 72.

[0066] The connection mode of the third pull wire with the first pull wire and the second pull wire is realized by a junction box in the embodiment of the present invention. Figure 9 The junction box may include a housing 61, a piston block 62 disposed in the housing 61, a first pull wire 71, a second pull wire 72, and a third pull wire 73 each including a core wire and a sheath wrapped around the core wire (see Figure 9 The first pull wire sheath 712, the second pull wire sheath 722, and the third pull wire sheath 732 are respectively cut off from one end of the first pull wire 71, the second pull wire 72, and the third pull wire 73 to expose the core wire. The third pull wire 73 can be connected to one end of the piston block 62, and the first pull wire 71 and the second pull wire 72 can be connected to the other end of the piston block 62. In order to make the connection more reliable and avoid loosening, a spherical structure can be set at the end of the exposed core wire to form a pull wire joint (see Figure 9 The first pull wire joint 711, the second pull wire joint 721, and the third pull wire joint 731).

[0067] In order to enable the auxiliary lock to automatically reset after unlocking, so that the auxiliary lock can be automatically locked when the sliding door is opened next time, the embodiment of the present invention also provides an elastic reset member for pushing the third pull wire 73 to reset in the housing 61 of the junction box. Figure 9 The outer shell 61 is provided with two chambers connected in series, and the piston block and the elastic reset member are respectively arranged in two different chambers. Part of the sheath at one end of the third pull wire 73 is cut off to expose the third pull wire joint 731, and at the same time, the third pull wire 73 will form a step surface after the part of the sheath is cut off. The third pull wire joint 731 passes through the two chambers of the outer shell and is connected to the piston block 62. The elastic reset member is supported between the step surface on the outer periphery of the third pull wire 73 and the inner wall of the outer shell 61. When the piston block 62 moves away from the auxiliary lock under the drive of the first pull wire 71 or the second pull wire 72, the elastic reset member is compressed. When the driving force of the first pull wire 71 and the second pull wire 72 is removed, the elastic reset member pushes the third pull wire 73 to reset through the step surface, so that the auxiliary lock is reset. As an embodiment of the present invention, the elastic reset member can be a spring 63 or other elastic rubber products.

[0068] Example 3

[0069] Compared with the first or second embodiment, the sliding door lock mechanism provided by the embodiment of the present invention further includes a lock core and a fifth rocker arm 35 connected to the lock core. Figure 8 The lock cylinder 12 is connected to the fifth rocker arm 35 through the first pull rod 76. When the lock cylinder is in the locked state, the fifth rocker arm 35 is used to limit the first rocker arm 31 to prevent the first rocker arm 31 from moving; when the lock cylinder is in the unlocked state, the fifth rocker arm 35 releases the limit on the first rocker arm 31. The fifth rocker arm 35 can be set as follows Figure 8 The claw structure shown in the figure includes a claw connecting part and a claw hook part, and the claw connecting part is hinged to the first pull rod 76. When the lock core is locked, the first rocker arm 31 is engaged with the hook part, preventing the first rocker arm 31 from rotating counterclockwise around O'. Accordingly, the second rocker arm 32 cannot obtain the driving force of the first rocker arm 31 around O'', and thus cannot rotate the second rocker arm 32 around O'' clockwise to pull the fourth pull wire 74 and the third pull wire 73 to pull the main lock 41 and the auxiliary lock 51, thereby prohibiting the unlocking action of the outward opening switch 13.

[0070] When the lock cylinder 12 is in the unlocked state, the first pull rod 76 is used to transmit the claw hook portion of the fifth rocker arm 35 to disengage from the first rocker arm 31, thereby releasing the limit on the first rocker arm 31. At this time, the first rocker arm 31 can cause the second rocker arm 32 to rotate clockwise around O''. Referring to Example 1, at this time, the outward opening switch 13 can transmit the second rocker arm 32 to rotate clockwise around O'', and then the second rocker arm 32 rotates clockwise around O'' to cause the fourth pull wire 74 and the third pull wire 73 to pull the main lock 41 and the auxiliary lock 51 to unlock the main lock 41 and the auxiliary lock 51.

[0071] The embodiments of the present invention help to enhance safety and prevent the main lock and auxiliary lock from being unlocked from outside the vehicle body in an illegal state or by an illegal person.

[0072] Example 4

[0073] See also Figure 10 The embodiment of the present invention provides a sliding door lock mechanism for opening and closing inside and outside, which is also equipped with an outward unlocking restriction structure. The difference between the other three embodiments is that this embodiment uses a motor 37 to drive the fifth rocker arm 35. Specifically, the output shaft of the motor 37 is connected to the sixth rocker arm 36, which is connected to the fifth rocker arm 35. The motor 37 can control the fifth rocker arm 35 to perform locking and unlocking actions according to the remote control terminal signal. Specifically, in response to the locking operation of the remote control terminal signal, the motor 37 drives the sixth rocker arm 36 to the outside through the transmission shaft. Figure 10As shown by the arrow, the sixth rocker arm 36 drives the claw hook portion of the fifth rocker arm 35 to clamp the first rocker arm 31 to prevent the first rocker arm 31 from rotating counterclockwise around O', and the first rocker arm 31 cannot make the second rocker arm 32 rotate clockwise around O''. Referring to Example 1, at this time, the external opening switch 13 cannot make the second rocker arm 32 rotate clockwise around O'' through transmission, and then cannot make the fourth pull wire 74 and the third pull wire 73 pull the main lock 41 and the auxiliary lock 51 through the second rocker arm 32 clockwise around O'', and the unlocking action of the external opening switch is prohibited; in response to the unlocking operation of the remote control end signal, the motor 37 drives the sixth rocker arm 36 to rotate counterclockwise around O'. Figure 10 As shown by the arrow, the sixth rocker arm 36 drives the claw hook of the fifth rocker arm 35 to disengage from the first rocker arm 31, and the first rocker arm 31 can make the second rocker arm 32 rotate clockwise around O''. Referring to Example 1, at this time, the outward opening switch 13 can rotate the second rocker arm 32 clockwise around O'' through transmission, and then the second rocker arm 32 rotates clockwise around O'' to make the fourth pull wire 74 and the third pull wire 73 pull the main lock 41 and the auxiliary lock 51 to unlock the main lock 41 and the auxiliary lock 51.

[0074] The sliding door inner and outer door lock mechanism provided by the embodiment of the present invention has a higher degree of automation, and the outer opening switch 13 can be locked by the remote control terminal, meeting the current remote control requirements for the sliding door 8.

[0075] Embodiment 5:

[0076] An embodiment of the present invention provides an engineering vehicle, which may include the sliding door inner and outer door lock mechanism described in any one of embodiments 1 to 4. Since it has the same mechanism as the aforementioned embodiments and can produce the same technical effects, it will not be described in detail here.

[0077] In the description of the present invention, unless otherwise specified, the terms "up", "front", "back", "left", "right", "inside", "outside", "around", "clockwise", "counterclockwise", etc. to indicate directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operate in a specific direction. Therefore, they should not be understood as limiting the present invention.

[0078] Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature identified with "first," "second," etc., may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0079] In the description of the present invention, it should be noted that, unless otherwise specified or limited, the term "connection" should be understood in a broad sense. For example, it can mean a fixed connection, a detachable connection, or an integral connection; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean internal communication between two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood based on specific circumstances.

[0080] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A sliding door lock mechanism for opening inside and outside, comprising a main lock, an auxiliary lock, an inside opening assembly, and an outside opening assembly. When the sliding door is closed, the main lock remains locked; when the sliding door is opened, the auxiliary lock remains locked; characterized in that: It also includes a second rocker arm (32), a lock core, and a fifth rocker arm (35) transmission-connected to the lock core, wherein the main lock and the auxiliary lock are respectively transmission-connected to the second rocker arm (32); The outward opening assembly comprises an outward opening switch (13) and a first rocker arm (31), wherein the first rocker arm (31) is in transmission connection with the outward opening switch (13), and the second rocker arm (32) is in transmission connection with the first rocker arm (31); when the outward opening switch (13) performs an unlocking action, the first rocker arm (31) moves and can drive the second rocker arm (32) to move synchronously, thereby unlocking the main lock and the auxiliary lock; The inner opening assembly comprises an inner opening switch (21) and a third rocker arm (33), wherein the third rocker arm (33) is in transmission connection with the inner opening switch (21), and the third rocker arm (33) is in transmission connection with the second rocker arm (32); when the inner opening switch (21) performs an unlocking action according to a first predetermined manner, the third rocker arm (33) moves and can drive the second rocker arm (32) to move synchronously, thereby unlocking the main lock and the auxiliary lock; when the lock core is in a locked state, the fifth rocker arm (35) is used to limit the first rocker arm (31) to prevent the first rocker arm (31) from moving; when the lock core is in an unlocked state, the fifth rocker arm (35) releases the limit on the first rocker arm (31).

2. The sliding door inner and outer door lock mechanism according to claim 1, characterized in that: The invention also includes a fourth rocker arm (34), which is in transmission connection with the auxiliary lock and in transmission connection with the third rocker arm (33); when the inner opening switch (21) performs an unlocking action according to a second predetermined method, the third rocker arm (33) moves and can drive the fourth rocker arm (34) to move synchronously, thereby unlocking the auxiliary lock.

3. The sliding door inner and outer door lock mechanism according to claim 1, characterized in that: It also includes a motor (37), a sixth rocker arm (36) drivingly connected to the output shaft of the motor (37), and a fifth rocker arm (35) drivingly connected to the sixth rocker arm (36), wherein the motor is connected to a remote control terminal signal; In response to the remote control terminal performing a locking operation, the motor drives the sixth rocker arm (36) to move in the first direction, and the sixth rocker arm (36) drives the fifth rocker arm (35) to limit the first rocker arm (31) to prevent the first rocker arm (31) from moving; In response to the remote control terminal performing an unlocking operation, the motor drives the sixth rocker arm (36) to move in the second direction, and the sixth rocker arm (36) drives the fifth rocker arm (35) to release the limit of the first rocker arm (31).

4. The sliding door inner and outer door lock mechanism according to claim 2, characterized in that: The auxiliary lock is connected to a third pull wire (73) in a transmission connection. The third pull wire is connected to the fourth rocker arm (34) through a first pull wire (71) and is connected to the second rocker arm (32) through a second pull wire (72).

5. The sliding door inner and outer door lock mechanism according to claim 4, characterized in that: It also includes a junction box, which includes a shell (61) and a piston block (62) disposed in the shell (61), and the first pull wire (71), the second pull wire (72), and the third pull wire (73) are all connected to the piston block (62).

6. The sliding door inner and outer door lock mechanism according to claim 5, characterized in that: An elastic reset member for pushing the third pull wire (73) to reset is also provided in the housing.

7. The sliding door inner and outer door lock mechanism according to claim 1, characterized in that: The outward opening assembly further comprises a fifth pull wire (75), and the first rocker arm (31) is transmission-connected to the outward opening switch (13) via the fifth pull wire (75).

8. The sliding door inner and outer door lock mechanism according to claim 1, characterized in that: The inner opening assembly further comprises a second pull rod (77) and a connecting rod (22), the two ends of the second pull rod (77) being hinged to the third rocker arm (33) and the connecting rod (22), respectively, and the connecting rod (22) being transmission-connected to the inner opening switch (21).

9. The sliding door inner and outer door lock mechanism according to claim 1, characterized in that: The lock core is transmission-connected to the fifth rocker arm (35) via a first pull rod (76).

10. An engineering vehicle, characterized in that: The invention comprises the sliding door inner and outer door opening locking mechanism according to any one of claims 1 to 9.

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