Bottom locking device for vehicle sliding plug door
Technical Field
The present invention relates to a bottom locking device, and more particularly to a bottom locking device for a vehicle sliding plug door.
Background
With the widespread use of sliding plug door technology, there is a growing awareness of sliding plug doors. Typically, the top locking of a vehicle sliding plug door is suspended, guided and locked in place in the region of its upper horizontal edge and is operated by the sliding plug door drive. While the bottom of the sliding plug door is mostly guided by guide rollers or rails or other similar means to prevent collisions of the sliding plug door on the door frame and binding of the door leaves of the sliding plug door in the locked state. There are two basic schemes in the prior art:
the first scheme is that a vertical synchronous rotating lever is arranged on the side edge of a door opening of the sliding plug door, and after the sliding plug door reaches a closing terminal position, a top driving device of the sliding plug door provides rotating power, so that the bottom of the sliding plug door is restrained by locking and pressing.
The second scheme is that a guide rail with a certain curve shape is arranged at the tail end of a horizontal edge area at the bottom of the sliding plug door, and the guide rail and a guide device arranged at the corresponding position of the side edge of the door opening of the sliding plug door are combined to form a cam system, so that the door leaf of the sliding plug door is converted into a motion vertical to the plane of the door leaf along the longitudinal direction of the vehicle, and the door leaf is restrained at the locking terminal position.
The prior two technical schemes need to transfer the top constraint to the bottom through the torsion of the synchronizing rod or the door plate suspension piece, so that the constraint of the bottom locking position of the sliding plug door is formed.
Disclosure of Invention
The invention aims to: the object of the present invention is to solve the disadvantages of the prior art and to provide a bottom locking device for a vehicle sliding plug door, which bottom locking device is capable of increasing the restraint stiffness of the bottom locking position of the sliding plug door leaf and of reducing the space requirement without having to add additional device costs for this.
The technical scheme is as follows: the invention relates to a bottom locking device for a vehicle sliding plug door, which comprises a base, a rotating arm, a sleeve and an operating rod, wherein the base is fixedly arranged on a door frame of the sliding plug door, the base is of a hollow structure, and two axial grooves parallel to the axis of the base are symmetrically arranged on the side wall of the base; one end of the rotating arm is connected with a guide rail arranged in parallel with the bottom edge of the sliding plug door leaf through a rolling device, and the other end of the rotating arm is fixedly connected with the sleeve to rotatably support the sleeve in the base; the sleeve is of a hollow structure, two curved grooves are symmetrically formed in the side wall, one end of each curved groove, far away from the rotating arm, is parallel to the axis of the sleeve in the arrangement direction, and the other groove bodies are obliquely arranged on the axis of the sleeve; the operating rod stretches into the sleeve, the end part of the operating rod is transversely provided with a shaft with two ends stretching out, and the two ends of the shaft respectively stretch into the curve groove and the axial groove on the corresponding sides;
the operating rod slides up and down in the base to drive the sleeve to rotate in the base, and the base drives the rotating arm to rotate on a plane perpendicular to the door leaf along the guide rail to push or lock the door leaf.
In a further preferred technical scheme of the invention, the operating rod is connected with a sliding plug door driving device, and the sliding plug door driving device drives the sliding plug door driving device to slide up and down in the sleeve.
Preferably, two rollers are respectively arranged on two extending ends of the shaft, and each roller rolls in a corresponding curve groove and an axial groove.
Preferably, the rolling device comprises a roller bracket, two rollers are arranged on the roller bracket, and the rollers roll in the guide rail.
Preferably, the rolling device is a roller, and the roller rolls in the guide rail.
Preferably, the guide rail is horizontally mounted at the bottom edge of the door leaf.
Preferably, the base is fixed to the bottom region of the side edge of the door frame opposite the door leaf.
Preferably, the curved groove is spiral.
The beneficial effects are that: (1) The bottom locking device is connected with the door leaf through the rotating arm and the rolling device arranged at one end of the rotating arm, when the operating rod slides up and down, the two ends of the shaft at the bottom of the operating rod are limited by the axial grooves on the base and cannot deviate transversely, at the moment, the sleeve which is rotatably arranged in the base is driven by the operating rod to rotate, and the sleeve drives the rotating arm fixedly connected with the sleeve to rotate along the guide rail on the plane vertical to the door leaf, so that the door leaf is pushed open or locked, and the locking of the sliding plug door is realized; meanwhile, in the transverse opening and closing process of the sliding plug door, the rolling device rolls along the guide rail, so that the normal opening and closing of the door leaf is not influenced, after the sliding plug door is completely closed, the shaft at the bottom of the operating rod is positioned in the groove body, which is parallel to the axis of the sleeve, of the curved groove, and the sleeve is restrained to rotate by the groove body, so that the locking of the lower part of the door leaf is restrained at the closing position, the defect of the traditional device is thoroughly solved, and the bottom locking of the sliding plug door of a vehicle is more tightly, simply and quickly closed;
(2) The operating rod is connected with the sliding plug door driving device, the sliding plug door driving device drives the sliding plug door to slide up and down in the sleeve, the bottom of the sliding plug door can be safely and timely locked while the sliding plug door is closed by the driving device, the weakening of constraint in the process of transmitting top constraint to the bottom is avoided, and the constraint rigidity constraint can enable the bottom of the sliding plug door to be locked to achieve a satisfactory effect; at the same time, the locking device of the invention is simpler, more compact and easier to manufacture and assemble by the design;
(3) According to the invention, two rollers are respectively arranged at two extending ends of the shaft of the operating rod, each roller rolls in the corresponding curve groove and axial groove, so that the running smoothness of the whole locking device is improved, and the operating force, wear resistance and other performances of the locking device are improved;
(4) The rolling device can be in various forms, two rollers are arranged through the roller bracket, so that the stability of connection between the locking device and the door leaf and the fluency of relative movement are improved, the rollers can be directly arranged at the end part of the rotating arm, the rollers are embedded in the guide rail, the basically same effect can be achieved, and only the installation space or the locking strength or rigidity of the door leaf are relatively deteriorated, but the manufacturing cost can be reduced to a certain extent.
Drawings
Fig. 1 is a schematic view of the structure of the locking device of embodiment 1 of the present invention when locking a sliding door;
fig. 2 is a schematic view showing the structure of the locking device of embodiment 1 of the present invention when the sliding plug door is opened;
FIG. 3 is a schematic view showing the structure of a rotating arm and a sleeve according to embodiment 1 of the present invention;
FIG. 4 is a schematic view of the structure of the base according to embodiment 1 of the present invention;
fig. 5 is a schematic structural view of a locking device in embodiment 2 of the present invention.
Detailed Description
The technical scheme of the invention is described in detail below through the drawings, but the protection scope of the invention is not limited to the embodiments.
Example 1: the utility model provides a bottom locking device for vehicle sliding plug door, includes base 1, rotor arm 2, sleeve 3, action bars 4, door leaf 11, guide rail 12, and wherein rotor arm 2 is fixed connection with sleeve 3, and the one end of rotor arm 2 passes through sleeve 3 rotation support in base 1, and the device of rolling in guide rail 12 is installed to the other end of rotor arm 2, and action bars 4 remove in sleeve 3 and operate by sliding plug door drive arrangement, the wall symmetry of sleeve 3 is provided with two spiral groove 5 that are spiral, and the one end that the spiral groove 5 kept away from rotor arm 2 evolves into the axial, is provided with two axial grooves 6 on the base 1 symmetry. The end of the operating rod 4 is transversely provided with a shaft 7 with two ends extending out, each extending end of the shaft 7 is provided with two rollers 8, each roller 8 correspondingly rolls in the spiral groove 5 and the axial groove 6, the other end of the rotating arm 2 is hinged with a roller bracket 9, two rollers 10 are arranged on the roller bracket 9, the rollers 10 roll in a guide rail 12, the guide rail 12 is horizontally arranged at the bottom edge of the door leaf 11, and the base 1 is fixed in the bottom area of the side edge of the door frame opposite to the door leaf 11.
Referring to fig. 1 to 4, the working principle of the present invention is: firstly, the door leaf 11 of the sliding plug door is in a locked state from fig. 1 to an opened state from fig. 2, the operating rod 4 is controlled by the sliding plug door operating device to move downwards axially, the rollers 8 on the shafts 7 extending from the two lateral sides of the end of the operating rod roll in the spiral groove 5 and the axial groove 6 respectively, the direction of the spiral groove 5 corresponds to forcing the rotating arm 2 to rotate clockwise (overlook), and since the two rollers 10 hinged on the roller bracket 9 at the end of the rotating arm 2 are embedded in the guide rail 12, the downward movement of the operating rod 4 pushes the door leaf 11 to swing outwards, and when the operating rod 4 moves downwards to the lowest stroke setting position, the rotating arm 2 just rotates to the maximum swing position of the door leaf 11, namely the state shown in fig. 2.
The process of the door leaf 11 of the sliding plug door from the open state of fig. 2 to the locked state of fig. 1 is contrary, and the roller 8 finally stays in the groove body which is formed by the axial direction of the end part of the spiral groove 5, so that the device has the rotation locking function on the rotating arm 2 at the door leaf 11 closing locking position, and the purpose of locking and restraining the bottom of the door leaf 11 is achieved.
Example 2: as shown in fig. 5, the same effect as in embodiment 1 can be achieved by using a roller 13 mounted on the end of the rotating arm 2 and having the roller 13 embedded in the guide rail 12, and the shaft 7 inserted into the spiral groove 5 and the shaft groove 6, respectively, and the rest of the structure is the same as in embodiment 1, except that the mounting space, the operation resistance, or the locking strength or rigidity to the door leaf is relatively deteriorated.
As described above, although the present invention has been shown and described with reference to certain preferred embodiments, it is not to be construed as limiting the invention itself. Various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.