CN103643844A - Construction machinery, driving cab and internal latch structure of vehicle door - Google Patents

Construction machinery, driving cab and internal latch structure of vehicle door Download PDF

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Publication number
CN103643844A
CN103643844A CN201310690926.3A CN201310690926A CN103643844A CN 103643844 A CN103643844 A CN 103643844A CN 201310690926 A CN201310690926 A CN 201310690926A CN 103643844 A CN103643844 A CN 103643844A
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connecting rod
door
lock
elevating lever
moving spring
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CN201310690926.3A
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CN103643844B (en
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欧鹏程
高建峰
林静
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Sany Automobile Manufacturing Co Ltd
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Sany Automobile Manufacturing Co Ltd
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Abstract

The invention discloses construction machinery, a driving cab of the construction machinery and an internal latch structure of a vehicle door. The internal latch structure of the vehicle door comprises a door lock, a touch lock and an inward-opening mechanism, wherein the door lock and/or the touch lock are/is rotationally connected onto the inward-opening mechanism which can control opening and closing of the door lock and the touch lock simultaneously. The inward-opening mechanism can control opening and closing of the door lock and the touch lock simultaneously, so that independent control of different control mechanisms for the door lock and the touch lock is avoided, and the control structure is simplified; due to the fact that the door lock and/or the touch lock are/is rotationally connected onto the inward-opening mechanism, for a sliding door, the door lock, the touch lock and the inward-opening mechanism can be arranged along the inner surface of the vehicle door, however, for a hinged door, the door lock can rotate for a certain angle relative to the inner surface of the vehicle door so as to be suitable for change of the matching direction between the door lock and a lock pin during a vehicle door rotation process, accordingly, the internal latch structure for the vehicle door can be suitable for the hinged door and the sliding door simultaneously, the universality is comparatively good, and types of control mechanisms of the lock are reduced.

Description

The inner bolt lock structure of engineering machinery, driver's cabin and car door
Technical field
The present invention relates to engineering machinery car door part field, particularly the inner bolt lock structure of a kind of car door, the invention still further relates to a kind of driver's cabin and engineering machinery that the inner bolt lock structure of above-mentioned car door is installed.
Background technology
At present, the car door of engineering machinery driving cabin comprises two kinds of hinged door and sliding doors, the two is all provided with inner bolt lock structure, inner bolt lock structure generally all comprises door lock, latch (positioning lock), unlocking mechanism and door control device, interior opening mechanism is for controlling the keying of door lock or latch, and door control device is for controlling the Kai Heguan of car door.But door lock and latch need to be controlled separately with different unlocking mechanisms respectively, and existing hinged door and sliding door cannot the inner bolt lock structures of general same, and versatility is poor, causes the controlling organization type of lock various.
Therefore how providing a kind of inside bolt lock structure that is simultaneously applicable to hinged door and sliding door is those skilled in the art's urgent problems.
Summary of the invention
In view of this, the present invention proposes the inner bolt lock structure of a kind of car door, and the inner bolt lock structure of this car door can be applicable to hinged door and sliding door simultaneously, and versatility is relatively good, has reduced the type of the controlling organization of lock; In addition, the invention allows for a kind of driver's cabin and engineering machinery that the inner bolt lock structure of this car door is installed.
On the one hand, the invention provides the inner bolt lock structure of a kind of car door, comprise door lock, latch and interior opening mechanism, described door lock and/or latch are rotating to be connected on described interior opening mechanism, and described interior opening mechanism can be controlled the keying of door lock and latch simultaneously.
Further, described interior opening mechanism comprises the first elevating lever, the second elevating lever, the first reset portion and link assembly, the upper end of described the first elevating lever and the first reset portion are hinged, the first end of described link assembly is overlapped in described the first elevating lever or the first reset portion, and the upper end of the second end and described the second elevating lever is hinged; Described door lock is rotatably connected to the lower end of described the first elevating lever, and described latch is rotatably connected to the lower end of described the second elevating lever.
Further, described the first elevating lever comprises connecting rod and the first lower link on first, on described first, the upper end of the lower end of connecting rod and the first lower link is spirally connected, on described first, the upper end of connecting rod and the first reset portion are hinged, the lower end of described the first lower link is connected with the unlocking mechanism of door lock, and/or described the second elevating lever comprises connecting rod and the second lower link on second, on described second, the upper end of the lower end of connecting rod and the second lower link is spirally connected, on described second, the upper end of connecting rod and link assembly are hinged, and the lower end of described the second lower link is connected with the unlocking mechanism of latch.
Further, described the first reset portion comprises the first back-moving spring, first connecting rod and spring fixator, described first connecting rod and car door are articulated with the first pin joint, described the first back-moving spring and the first elevating lever lay respectively at the both sides of described the first pin joint, and the upper end of the upper end of described the first back-moving spring and the first elevating lever is connected in respectively the two ends of first connecting rod, the lower end of described the first back-moving spring is connected on described spring fixator, and described link assembly is overlapped on the end that first connecting rod is connected with the first elevating lever.
Further, described the first reset portion and link assembly are positioned at the same side of described the first elevating lever or lay respectively at the both sides of described the first elevating lever.
Further, described link assembly comprises the second back-moving spring, the 3rd back-moving spring, the 4th back-moving spring, first handle, second connecting rod, third connecting rod and the 4th connecting rod, described second connecting rod, third connecting rod and the 4th connecting rod and first handle are articulated with respectively the second pin joint, the 3rd pin joint and the 4th pin joint, the two ends of described third connecting rod are flexibly connected with one end of second connecting rod and one end of the 4th connecting rod respectively, the other end of second connecting rod is overlapped in the first reset portion, and the upper end of the other end of the 4th connecting rod and the second elevating lever is hinged; The first end of the second back-moving spring is connected on first handle, and the second end is connected to the part between the second pin joint and third connecting rod on second connecting rod; The first end of the 3rd back-moving spring is connected on first handle, and the second end is connected to the part between the 3rd pin joint and second connecting rod on third connecting rod; The first end of the 4th back-moving spring is connected on first handle, and the second end is connected to the part between the 4th pin joint and third connecting rod on the 4th connecting rod.
Further, described front lock is pressing structure, and described latch is pull-type structure.
Further, described interior opening mechanism comprises second handle, the 5th connecting rod, the 6th connecting rod, the first bracing wire, the second bracing wire, the 5th back-moving spring and the 6th back-moving spring, and the 5th connecting rod and the 6th connecting rod are articulated with the 5th pin joint and the 6th pin joint with second handle respectively; The lower end of described the first bracing wire is connected with door lock, and upper end is connected with one end of the 5th connecting rod; The other end of the 5th connecting rod is flexibly connected with one end of the 6th connecting rod, and the other end of the 6th connecting rod is connected with the upper end of the second bracing wire, and the lower end of the second bracing wire is connected with latch; One end of described the 5th back-moving spring connects second handle, the other end is connected to the part between the 5th pin joint and the first bracing wire on the 5th connecting rod, one end of described the 6th back-moving spring connects second handle, and the other end is connected to the part between the 5th connecting rod and the 6th pin joint on the 6th connecting rod; Described door lock and latch are all pull-type structure.
On the other hand, the present invention also provides a kind of driver's cabin, comprises car door, and the inner bolt lock structure of above-mentioned any one car door is installed on described car door.
Another aspect, the present invention also provides a kind of engineering machinery, comprises above-mentioned driver's cabin.
The inner bolt lock structure of a kind of car door provided by the invention, comprises door lock, latch and interior opening mechanism, and door lock and/or latch are rotating to be connected on interior opening mechanism, and interior opening mechanism can be controlled the keying of door lock and latch simultaneously.Compared with prior art, first, interior opening mechanism can be controlled the keying of door lock and latch simultaneously, avoided the different controlling organization independent control to door lock and latch respectively, simplify control structure, reduced to take up room, made the keying of door lock and latch control fairly simple, in addition, due to door lock and/or latch is rotating is connected on interior opening mechanism, for sliding door, can be by door lock, latch and interior opening mechanism are along the inner surface setting of car door, yet for hinged door, the relative car door inner surface of door lock can be rotated to an angle, to adapt to the variation in direction that coordinates between the door lock that brings in car door rotary course and lock pin, in addition, if necessary, latch also can be rotated with respect to interior opening mechanism, so just make the inner bolt lock structure of this car door can be applicable to hinged door and sliding door simultaneously, versatility is relatively good, reduced the type of the controlling organization of lock.
Accompanying drawing explanation
The accompanying drawing that forms a part of the present invention is used to provide a further understanding of the present invention, and schematic description and description of the present invention is used for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is the structural representation of the inner bolt lock structure of a kind of car door under the state of closing the door in the specific embodiment of the invention;
Fig. 2 is the structural representation of the inner bolt lock structure of a kind of car door under door opening state in the specific embodiment of the invention;
Fig. 3 is the structural representation of the inner bolt lock structure of another kind of car door in the specific embodiment of the invention.
The specific embodiment
It should be noted that, in the situation that not conflicting, embodiment and the feature in embodiment in the present invention can combine mutually.Describe below with reference to the accompanying drawings and in conjunction with the embodiments the present invention in detail.
As illustrated in fig. 1 and 2, the specific embodiment of the invention provides a kind of car door inner bolt lock structure, comprises door lock 1, latch 2 and interior opening mechanism, and door lock 1 is rotatably connected on interior opening mechanism, and interior opening mechanism can be controlled the keying of door lock 1 and latch 2 simultaneously.Wherein, door lock 1 and latch 2 can be pressing structure, can be also pull-type structure, the lock of so-called pressing structure, and when exactly the opening device of lock is exerted pressure, lock can become opening from lockup state; Similarly, the lock of so-called pull-type structure, while exactly the opening device of lock being applied to pulling force, lock can become opening from lockup state; Because the structure of these two kinds of locks is more common, therefore at this, do not elaborate.
The inner bolt lock structure of car door in this programme, first, because interior opening mechanism can be controlled the keying of door lock 1 and latch 2 simultaneously, avoided the different controlling organization independent control to door lock 1 and latch 2 respectively, simplified control structure, reduced to take up room, made the keying of door lock 1 and latch 2 control fairly simple; In addition, because door lock 1 is rotating, be connected on interior opening mechanism, for sliding door, can the inner surface setting along car door by door lock 1, latch 2 and interior opening mechanism, yet for hinged door, door lock 1 car door inner surface relative to latch 2 can be rotated to an angle, to adapt to the variation in direction that coordinates between the door lock 1 that brings in car door rotary course or latch 2 and lock pin, so just make the inner bolt lock structure of this car door can be applicable to hinged door and sliding door simultaneously, versatility is relatively good, has reduced the type of the controlling organization of lock.
Particularly, interior opening mechanism comprises the first elevating lever, the second elevating lever, the first reset portion and link assembly, the upper end of the first elevating lever and the first reset portion are hinged, the left end of link assembly is overlapped in the first elevating lever or the first reset portion, and the upper end of the right-hand member of link assembly and the second elevating lever is hinged; Door lock 1 is rotatably connected to the lower end of the first elevating lever, and/or latch 2 is rotatably connected to the lower end of the second elevating lever.Wherein, the first reset portion comprises the first back-moving spring 31, first connecting rod 32 and spring fixator 33, the centre of first connecting rod 32 is articulated with the first pin joint 321 by bearing pin and car door, the first back-moving spring 31 and the first elevating lever lay respectively at the both sides of the first pin joint 321, and the upper end of the first back-moving spring 31 is connected to the left end of first connecting rod 32, the lower end of the first back-moving spring 31 is connected on spring fixator 33, and spring fixator 33 is fixedly connected on car door, the upper end of the first elevating lever is hinged on the right-hand member of first connecting rod 32, and the lower end of the first elevating lever is connected with the unlocking mechanism of door lock 1, and now whole the first reset portion is positioned at the left side of the first elevating lever, more specifically, the first elevating lever comprises connecting rod 41 and the first lower link 42 on first, on first, the upper end of the lower end of connecting rod 41 and the first lower link 42 is spirally connected, on first, the upper end of connecting rod 41 and the first reset portion are hinged, the lower end of the first lower link 42 is connected with the unlocking mechanism of door lock 1, now door lock 1 just can be around the first elevating lever rotation, so just make door lock 1 and latch 2 can have two kinds of location statuss: the first, door lock 1 and latch 2 are in same plane, door lock 1 and latch 2 be parallel to car door plane or car door planar (door lock 1 is parallel with the movement locus of car door with latch 2), now the inner bolt lock structure of this car door is applicable to sliding door, the second, door lock 1 is not with latch 2 in same plane, and door lock 1 is predetermined angular with latch 2 and car door place plane, (door lock 1 is tangent at the movement locus of latched position and car door with latch 2), now the inner bolt lock structure of this car door is applicable to hinged door, in addition, owing to being to be spirally connected between connecting rod 41 on first and the first lower link 42, therefore can regulate the length of the first elevating lever, to meet the demand of the car door of differing heights.
Similarly, latch 2 also can design can be around the second elevating lever rotation, particularly, the second elevating lever comprises connecting rod 51 and the second lower link 52 on second, on second, the upper end of the lower end of connecting rod 51 and the second lower link 52 is spirally connected, on second, the upper end of connecting rod 51 and link assembly are hinged, and the lower end of the second lower link 52 is connected with the unlocking mechanism of latch 2.When needs are adjusted latch 2 place plane, just can reach required object by rotation latch 2, equally also can regulate the length of the second elevating lever to meet the demand of differing heights car door.
Particularly, link assembly comprises the second back-moving spring 67, the 3rd back-moving spring 66, the 4th back-moving spring 65, first handle 62, second connecting rod 61, third connecting rod 63 and the 4th connecting rod 64, second connecting rod 61, third connecting rod 63 and the 4th connecting rod 64 are articulated with respectively the second pin joint 611, the 3rd pin joint 631 and the 4th pin joint 641 with first handle 62 by bearing pin, the two ends of third connecting rod 63 are flexibly connected with the right-hand member of second connecting rod 61 and the left end of the 4th connecting rod 64 respectively, specifically can be snapping; The left end of second connecting rod 61 is overlapped on the right-hand member of first connecting rod 32, and the upper end of the right-hand member of the 4th connecting rod 64 and the second elevating lever is hinged; The upper end of the second back-moving spring 67 is connected on first handle 62, and lower end is connected to the part between the second pin joint 611 and third connecting rod 63 on second connecting rod 61; The upper end of the 3rd back-moving spring 66 is connected on first handle 62, and lower end is connected to the part between the 3rd pin joint 631 and second connecting rod 61 on third connecting rod 63; The lower end of the 4th back-moving spring 65 is connected on first handle 62, and upper end is connected to the part between the 4th pin joint 641 and third connecting rod 63 on the 4th connecting rod 64, and door lock 1 is now pressing structure, and latch 2 is pull-type structure.
The course of work of the inner bolt lock structure of car door of this programme is: when needs are unblanked, left end and a first handle 62 that holds third connecting rod 63, apply active force, third connecting rod 63 is clockwise rotated around the 3rd pin joint 631, thereby drive second connecting rod 61 to rotate counterclockwise around the 4th pin joint 641 around the second pin joint 611 and the 4th connecting rod 64, the right-hand member that the left end of second connecting rod 61 is pushed down first connecting rod 32 moves down, thereby first connecting rod 32 is turned clockwise around the first pin joint 321, and then push down the first elevating lever and move down, thereby promote the unlocking mechanism release of door lock 1, another side, the 4th connecting rod 64 is rotated counterclockwise, and drives the second elevating lever to rise, thereby pulls the unlocking mechanism release of latch 2, after door lock 1 or latch 2 releases, the hand of holding first handle 62 can continue the unlatching of car door, therefore, the release of car door just can complete with the only hand of needs that opens the door all, makes operator operation more comfortable, in addition, by an interior opening mechanism, can control the release of door lock 1 and latch 2 simultaneously, make the simpler, more convenient to operate of the inner bolt lock structure of whole car door, greatly save the space taking.In addition, after door lock 1 and latch 2 releases, only need to unclamp hand, under the effect of the first back-moving spring 31, on the first elevating lever, move, under the effect of the second back-moving spring 67, the 3rd back-moving spring 66 and the 4th back-moving spring 65, second connecting rod 61, third connecting rod 63 and the 4th connecting rod 64 recover previous state simultaneously, the second elevating lever also moves down under the pressure-acting of the 4th connecting rod 64, thereby realizes closing of door lock 1 and latch 2.
It should be noted that, in order to save space, the first reset portion can also be arranged on to the right side of the first elevating lever, the length of the inner bolt lock structure of whole car door is shortened; In addition, in order to adapt to the car door of different in width, can when manufacturing and designing, shorten in right amount the length of second connecting rod 61, third connecting rod 63 or the 4th connecting rod 64, thereby be easy to realize the coupling of the inner bolt lock structure of this car door to the car door of different in width; Moreover, above-mentioned interior opening mechanism is a kind of implementation of the present invention, can also have the multiple mode by many connecting rod assemblies, for example, the connecting rod quantity being hinged on first handle 62 can be four or more, thus the type of adaptive change door lock 1 or latch 2.
As shown in Figure 3, the specific embodiment of the invention also provides a kind of car door inner bolt lock structure, comprise door lock 1, latch 2 and interior opening mechanism, wherein interior opening mechanism comprises that second handle 71, the 5th connecting rod 72, the 6th connecting rod 73, the first bracing wire 7, the second bracing wire 8, the 5th back-moving spring 75 and the 6th back-moving spring 74, the five connecting rods 72 and the 6th connecting rod 73 are articulated with the 5th pin joint 721 and the 6th pin joint 731 with second handle 71 respectively; The lower end of the first bracing wire 7 is connected with door lock 1, and upper end is connected with one end of the 5th connecting rod 72; The other end of the 5th connecting rod 72 is flexibly connected with one end of the 6th connecting rod 73, and the other end of the 6th connecting rod 73 is connected with the upper end of the second bracing wire 8, and the lower end of the second bracing wire 8 is connected with latch 2; One end of the 5th back-moving spring 75 connects second handle 71, the other end is connected to the part between the 5th pin joint 721 and the first bracing wire 7 on the 5th connecting rod 72, one end of the 6th back-moving spring 74 connects second handle 71, the other end is connected to the part between the 5th connecting rod 72 and the 6th pin joint 731 on the 6th connecting rod 73, and door lock 1 now and latch 2 are all pull-type structure.The inner bolt lock structure of this car door is more simple, and its specific operation process and the above embodiments are similar, at this, are not described in detail.
The specific embodiment of the invention also provides a kind of driver's cabin, and this driver's cabin comprises car door, the inner bolt lock structure of above-mentioned any one car door is installed on car door, so this driver's cabin also has above-mentioned beneficial effect.
The specific embodiment of the invention also provides a kind of engineering machinery, and above-mentioned driver's cabin is installed, so this project machinery also has above-mentioned beneficial effect, does not repeat them here.
The foregoing is only preferred embodiment of the present invention, in order to limit the present invention, within the spirit and principles in the present invention not all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.

Claims (10)

1. the inner bolt lock structure of a car door, it is characterized in that, comprise door lock (1), latch (2) and interior opening mechanism, described door lock (1) and/or latch (2) are rotating to be connected on described interior opening mechanism, and described interior opening mechanism can be controlled the keying of door lock (1) and latch (2) simultaneously.
2. the inner bolt lock structure of car door according to claim 1, it is characterized in that, described interior opening mechanism comprises the first elevating lever, the second elevating lever, the first reset portion and link assembly, the upper end of described the first elevating lever and the first reset portion are hinged, the first end of described link assembly is overlapped in described the first elevating lever or the first reset portion, and the upper end of the second end and described the second elevating lever is hinged; Described door lock (1) is rotatably connected to the lower end of described the first elevating lever, and described latch (2) is rotatably connected to the lower end of described the second elevating lever.
3. the inner bolt lock structure of car door according to claim 2, it is characterized in that, described the first elevating lever comprises connecting rod on first (41) and the first lower link (42), the upper end of the lower end of connecting rod on described first (41) and the first lower link (42) is spirally connected, upper end and first reset portion of connecting rod on described first (41) are hinged, the lower end of described the first lower link (42) is connected with the unlocking mechanism of door lock (1), and/or described the second elevating lever comprises connecting rod on second (51) and the second lower link (52), the upper end of the lower end of connecting rod on described second (51) and the second lower link (52) is spirally connected, upper end and the link assembly of connecting rod on described second (51) are hinged, the lower end of described the second lower link (52) is connected with the unlocking mechanism of latch (2).
4. the inner bolt lock structure of car door according to claim 2, it is characterized in that, described the first reset portion comprises the first back-moving spring (31), first connecting rod (32) and spring fixator (33), described first connecting rod (32) is articulated with the first pin joint (321) with car door, described the first back-moving spring (31) and the first elevating lever lay respectively at the both sides of described the first pin joint (321), and the upper end of described the first back-moving spring (31) and the upper end of the first elevating lever are connected in respectively the two ends of first connecting rod (32), the lower end of described the first back-moving spring (31) is connected on described spring fixator (33), described link assembly is overlapped on the end that first connecting rod (32) is connected with the first elevating lever.
5. the inner bolt lock structure of car door according to claim 4, is characterized in that, described the first reset portion and link assembly are positioned at the same side of described the first elevating lever or lay respectively at the both sides of described the first elevating lever.
6. according to the inner bolt lock structure of the car door described in claim 2-5 any one, it is characterized in that, described link assembly comprises the second back-moving spring (67), the 3rd back-moving spring (66), the 4th back-moving spring (65), first handle (62), second connecting rod (61), third connecting rod (63) and the 4th connecting rod (64), described second connecting rod (61), third connecting rod (63) and the 4th connecting rod (64) are articulated with respectively the second pin joint (611) with first handle (62), the 3rd pin joint (631) and the 4th pin joint (641), the two ends of described third connecting rod (63) are flexibly connected with one end of second connecting rod (61) and one end of the 4th connecting rod (64) respectively, the other end of second connecting rod (61) is overlapped in the first reset portion, the 4th other end of connecting rod (64) and the upper end of the second elevating lever are hinged, it is upper that the first end of the second back-moving spring (67) is connected to first handle (62), and the second end is connected to and on second connecting rod (61), is positioned at the part between the second pin joint (611) and third connecting rod (63), it is upper that the first end of the 3rd back-moving spring (66) is connected to first handle (62), and the second end is connected to and on third connecting rod (63), is positioned at the part between the 3rd pin joint (631) and second connecting rod (61), it is upper that the first end of the 4th back-moving spring (65) is connected to first handle (62), and the second end is connected to and on the 4th connecting rod (64), is positioned at the part between the 4th pin joint (641) and third connecting rod (63).
7. the inner bolt lock structure of car door according to claim 6, is characterized in that, described front lock is pressing structure, and described latch (2) is pull-type structure.
8. the inner bolt lock structure of car door according to claim 1, it is characterized in that, described interior opening mechanism comprises second handle (71), the 5th connecting rod (72), the 6th connecting rod (73), the first bracing wire (7), the second bracing wire (8), the 5th back-moving spring (75) and the 6th back-moving spring (74), and the 5th connecting rod (72) and the 6th connecting rod (73) are articulated with the 5th pin joint (721) and the 6th pin joint (731) with second handle (71) respectively; The lower end of described the first bracing wire (7) is connected with door lock (1), and upper end is connected with one end of the 5th connecting rod (72); The other end of the 5th connecting rod (72) is flexibly connected with one end of the 6th connecting rod (73), and the other end of the 6th connecting rod (73) is connected with the upper end of the second bracing wire (8), and the lower end of the second bracing wire (8) is connected with latch (2); One end of described the 5th back-moving spring (75) connects second handle (71), the other end is connected to and on the 5th connecting rod (72), is positioned at the part between the 5th pin joint (721) and the first bracing wire (7), one end of described the 6th back-moving spring (74) connects second handle (71), and the other end is connected to and on the 6th connecting rod (73), is positioned at the part between the 5th connecting rod (72) and the 6th pin joint (731); Described door lock (1) and latch (2) are all pull-type structure.
9. a driver's cabin, comprises car door, it is characterized in that, the inner bolt lock structure of the car door described in any one in claim 1-8 is installed on described car door.
10. an engineering machinery, comprises driver's cabin, it is characterized in that, described driver's cabin is driver's cabin claimed in claim 9.
CN201310690926.3A 2013-12-16 2013-12-16 Engineering machinery, driver's cabin and car door internal latch structure Active CN103643844B (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107327232A (en) * 2017-08-14 2017-11-07 北京汽车研究总院有限公司 A kind of reversible vehicle door lock structure that links
CN107327232B (en) * 2017-08-14 2020-01-07 北京汽车研究总院有限公司 Linkage direction-changeable automobile door lock structure

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