A safety locking mechanism for the tailgate of an amphibious armored vehicle

Abstract

The present invention discloses a locking mechanism for the tailgate of an amphibious armored vehicle, including an inner handle, an outer handle, a key pin, a spline shaft, a torsion spring, a fixed support, a limit cover, an adjusting screw rod, a locking seat, a locking block, an adjusting handle, a rolling pulley, a latch, a moving head, a spline sleeve, a plum blossom sleeve, a stop pin, and an end cover; a key pin is arranged in the lock hole of the outer handle, and the inner end of the key pin is fixed in the countersunk hole on the limit cover; the key pin is threadedly connected with the outer handle, and the limit cover is welded on the tailgate; the spline shaft passes through the center hole of the limit cover and extends into the vehicle body, a sealing ring is arranged between the spline shaft and the center hole, and the force transmission hole of the outer handle cooperates with the outer end of the spline shaft. The inner handle of the present invention is provided with a stop pin, which can prevent automatic opening under non-subjective operation conditions. The locking block of the present invention can adjust the distance from the base by adjusting the screw rod, so as to solve the sealing failure problem caused by the change of the assembly gap caused by rubber aging, mechanism wear, deformation, etc.

Description

Technical Field

[0001] The invention relates to a lock for a tailgate of an amphibious armored vehicle. Background Art

[0002] Amphibious armored transport vehicles need to transport passengers, and a tail door is set at the rear. Amphibious armored vehicles need to navigate safely on the water, and the reliability of the tail door locking and sealing is directly related to the safety of the vehicle and passengers. The door lock structure of land armored vehicles is relatively mature, but the safety is not high, and it is difficult to be used for amphibious armored vehicles. When sailing on the water, if the passengers or external forces misoperate and cause the handles inside and outside the vehicle to turn, it may cause an accident of sinking the vehicle and causing casualties. At the same time, if the tail door is not locked tightly due to factors such as aging of the rubber strip, it may also cause a large amount of water to enter, which may also cause an accident of sinking the vehicle and causing casualties. Before this, an auxiliary locking mechanism inside the vehicle is often added to improve the safety of navigation on the water, but the structure is complex and the cost is high. Summary of the invention

[0003] In order to solve the above technical problems, the present invention provides an amphibious armored vehicle tailgate locking mechanism with key locking, opening and closing inside and outside the vehicle, prevention of accidental opening, and adjustable stroke functions, which can improve the safety and sealing of the amphibious armored vehicle's navigation on water.

[0004] The technical solution adopted by the present invention is: an amphibious armored vehicle tailgate locking mechanism, including an inner handle, an outer handle, a key pin, a spline shaft, a torsion spring, a fixed support, a limit cover, an adjustment screw rod, a locking seat, a locking block, an adjustment handle, a rolling pulley, a latch, a moving head, a spline sleeve, a plum blossom sleeve, a stop pin, and an end cover;

[0005] A key pin is provided in the lock hole of the outside handle, and the inner end of the key pin is fixed in the countersunk hole on the limit cover; the key pin is threadedly connected to the outside handle, and the limit cover is welded on the tailgate; the spline shaft passes through the center hole of the limit cover and extends into the vehicle body, a sealing ring is provided between the spline shaft and the center hole, and the force transmission hole of the outside handle cooperates with the spline at the outer end of the spline shaft and is axially positioned by a nut;

[0006] A stop pin is arranged in the locking hole of the interior handle, a stop button is arranged at the inner end of the stop pin, a compression spring is arranged between the stop button and the bottom of the locking hole, and the compression spring is sleeved on the stop pin; the outer end of the key pin is placed in the groove of the fixed support; the fixed support is welded on the inner end surface of the limit cover, and the force transmission hole of the interior handle is matched with the inner end smooth axis of the spline shaft;

[0007] The spline sleeve and the spline shaft are matched through splines. Two groups of arc grooves are provided on the side of the spline sleeve, each group has two arc grooves, and the phase angles of the two arc grooves differ by 180 degrees; the two groups of arc grooves are arranged axially, and the phase angles of the two groups of arc grooves differ by 90 degrees; steel balls are installed in the arc grooves; the plum blossom sleeve is designed with 4 grooves, which are arranged along the axis. The plum blossom sleeve and the force transmission hole have interference fit, and the plum blossom sleeve and the spline sleeve have clearance fit;

[0008] The locking seat is welded on the inner wall of the base, the adjusting screw rod is installed in the center hole of the locking seat through a bearing, an end cover is installed at the end of the center hole of the locking seat, and an adjusting handle is provided at the end of the adjusting screw rod extending out of the end cover; a sliding groove is provided on the side wall of the locking seat, a locking block is screwed on the adjusting screw rod, and the locking block extends from the sliding groove to the handle inside the vehicle;

[0009] A latch hole is provided at the inner end of the fixed support, and the axis of the latch hole is arranged perpendicularly and horizontally with the spline shaft. The latch hole is arranged corresponding to the locking block, and the latch hole is a blind hole with its opening facing the locking block; a latch is provided in the latch hole, and the latch contacts the locking block toward the locking block end and is located on the inner side of the locking block; the latch is connected to the bottom of the latch hole by a compression spring; a moving head is installed on the spline shaft, and corresponding to the moving head, a long straight hole I and a long straight hole II are respectively provided on the side wall of the latch hole and the latch, and the moving head can squeeze the long straight hole II to retract the latch; the spline shaft and the fixed support are connected by a torsion spring, and the torsion spring is sleeved on the spline shaft.

[0010] In the above-mentioned amphibious armored vehicle rear door locking mechanism, a keyhole cover is provided at the outer end of the lock hole.

[0011] In the above-mentioned amphibious armored vehicle rear door locking mechanism, a rolling pulley is provided at the protruding end of the locking block; the rolling pulley is installed on the locking block through a pin shaft, the pin shaft is vertically arranged, and the lock latch contacts the rolling pulley.

[0012] In the above-mentioned tailgate locking mechanism of the amphibious armored vehicle, a sealing strip is provided between the tailgate and the base, and the sealing strip is fixedly mounted on the tailgate.

[0013] In the above-mentioned locking mechanism for the rear door of the amphibious armored vehicle, the surface where the moving head contacts the long straight hole II is an arc-shaped surface.

[0014] In the above-mentioned locking mechanism for the rear door of an amphibious armored vehicle, the locking latch is wedge-shaped toward the locking block.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. The inner handle of the present invention is provided with a stop pin, which can prevent automatic opening under non-subjective operating conditions. 2. The locking block of the present invention can adjust the distance from the base by adjusting the screw rod, which solves the problem of sealing failure caused by changes in assembly clearance caused by rubber aging, mechanism wear, deformation, etc. The screw rod adjustment stroke gives the tailgate locking stroke a wider adjustment range. 3. A sealing ring is provided between the spline shaft and the limit cover of the present invention, which can achieve reliable sealing of the rotating part. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is the front view of the present invention.

[0017] Figure 2 yes Figure 1 Medium AA view.

[0018] Figure 3 It is the BB view of the present invention.

[0019] Figure 4 yes Figure 1 Center B view.

[0020] Figure 5 It is a three-dimensional view of the outside handle of the vehicle of the present invention.

[0021] Figure 6 It is a perspective view of the interior handle of the present invention.

[0022] Figure 7 It is a three-dimensional view of a locking seat of the present invention.

[0023] Figure 8 It is a view of the fixed support of the present invention.

[0024] Fig. 9 It is a perspective view of the spline sleeve of the present invention.

[0025] Fig.10 It is a three-dimensional diagram of the plum blossom cover of the present invention. DETAILED DESCRIPTION

[0026] The present invention will be further described below in conjunction with the accompanying drawings.

[0027] like Figure 1-10 As shown, the present invention includes an interior handle 1, an exterior handle 2, a key pin 4, a spline shaft 7, a torsion spring 8, a fixed support 9, a limit cover 10, an adjusting screw 11, a locking seat 12, a locking block 13, an adjusting handle 14, a rolling pulley 15, a latch 16, a moving head 17, a spline sleeve 18, a plum blossom sleeve 19, a stop pin 20, and an end cover 24.

[0028] A key pin 4 is provided in the lock hole 2-1 of the vehicle exterior handle 2, and the inner end of the key pin 4 is fixed in the countersunk hole on the limit cover 10. The key pin 4 is threadedly connected to the vehicle exterior handle 2, and the limit cover 10 is welded to the tailgate. A key hole cover 3 is provided at the outer end of the lock hole 2-1. The spline shaft 7 passes through the center hole of the limit cover 10 and extends into the vehicle body. A sealing ring 6 is provided between the spline shaft 7 and the center hole. The force transmission hole 2-2 of the vehicle exterior handle 2 is matched with the spline at the outer end of the spline shaft, and is axially positioned by a nut 5.

[0029] A stop pin 20 is provided in the locking hole 1-1 of the interior handle 1, a stop button 21 is provided at the inner end of the stop pin 20, a compression spring 31 is provided between the stop button 21 and the bottom of the locking hole 1-1, and the compression spring 31 is sleeved on the stop pin 20. The outer end of the key pin 4 is placed in the groove of the fixed support 9; the fixed support 9 is welded on the inner end surface of the limit cover 10, and the force transmission hole 1-2 of the interior handle 1 is matched with the inner end smooth axis of the spline shaft, and is axially positioned by the nut 22.

[0030] The spline sleeve 18 is matched with the spline shaft through splines. Two groups of arc grooves are provided on the side of the spline sleeve 18, each group has two arc grooves 181, and the phase angles of the two arc grooves 181 differ by 180 degrees; the two groups of arc grooves are arranged axially, and the phase angles of the two groups of arc grooves differ by 90 degrees. Steel balls 26 are installed in the arc grooves. The plum blossom sleeve 19 is provided with 4 grooves, and the grooves 191 are arranged along the axis. The plum blossom sleeve 19 and the force transmission hole 1-2 have an interference fit, and the plum blossom sleeve 19 and the spline sleeve 18 have a clearance fit. The plum blossom sleeve 19 and the spline shaft 7 have a clearance fit, so that the spline shaft 7 can only drive the interior handle 1 in a counterclockwise direction. In the clockwise situation, the interior handle 1 cannot rotate with the spline shaft 7.

[0031] The locking seat 12 is welded on the inner wall of the base, the adjusting screw 11 is installed in the center hole of the locking seat 12 through a bearing, the end of the center hole of the locking seat 12 is installed with an end cover 24 through a screw 29, and the end of the adjusting screw 11 extending out of the end cover is installed with an adjusting handle 14 through a bolt 25. A slide groove 121 is provided on the side wall of the locking seat 12, and a locking block 13 is screwed on the adjusting screw 11. The locking block 13 extends from the slide groove to the interior handle 1 of the vehicle, and a rolling pulley 15 is installed on the extended end through a pin shaft 30, and the pin shaft 30 is vertically arranged.

[0032] A latch hole 91 is provided at the inner end of the fixed support 9. The axis of the latch hole 91 is perpendicular to the spline shaft 7 and is arranged horizontally. The latch hole is arranged corresponding to the locking block 13. The latch hole is a blind hole, and the opening faces the locking block 13. A latch 16 is provided in the latch hole. The latch 16 contacts the outer circle of the rolling pulley 15 toward the locking block 13 and is located inside the locking block 13. The latch 16 is wedge-shaped toward the locking block. The latch 16 is connected to the bottom of the latch hole by a compression spring 23. A moving head 17 is installed on the spline shaft 7. Corresponding to the moving head 17, a long straight hole I and a long straight hole II 161 are respectively provided on the side wall of the latch hole and the latch. The moving head 17 can squeeze the long straight hole II to make the latch retract. The contact surface of the moving head 17 with the long straight hole II is an arc surface. The spline shaft 7 and the fixed support 9 are connected by a torsion spring 8, and the torsion spring 8 is sleeved on the spline shaft 7. One end of the torsion spring 8 is fixed to the spline shaft 7 through the cotter pin 27, and the other end is fixed to the fixed support 9. The moving head 17 drives the latch 16 to slide in the latch hole of the fixed support 9 until it is separated from the locking block 13. The rolling pulley 15 of the locking block 13 reduces the required operating force. Under the combined action of the elastic force of the torsion spring 8 and the compression spring 23, the latch 16 can be automatically reset, so that the tailgate can be opened and closed both inside and outside the vehicle. A sealing strip 33 is provided between the tailgate 34 and the base 32, and the sealing strip 33 is fixedly installed on the tailgate 34.

[0033] When the tailgate 34 is opened from the outside of the vehicle, the key pin 4 is turned by the key to release the limit of the outside handle 2, and the outside handle 2 is turned clockwise to drive the spline shaft 7 to rotate through the spline, and the spline shaft 7 drives the moving head 17 to rotate through the spline, and the moving head 17 drives the latch 16 to slide in the groove of the fixed support 9 and disengage the locking block 13, and the spline shaft 7 is fixed by the nut 5 and the nut 22, and the tailgate is opened from the outside of the vehicle. After releasing the outside handle 2, the latch 16 is automatically reset under the combined action of the torsion spring 8 and the compression spring 23.

[0034] When the tailgate 34 is opened inside the vehicle, after releasing the limit of the key pin 4, the stop button 21 on the inside handle 1 is pulled out to disengage from the groove of the fixed support 9, and the inside handle 1 is rotated counterclockwise, the spline shaft 7 is driven to rotate through the steel ball 26, and the spline shaft 7 drives the moving head 17 to rotate through the spline, and the moving head 17 drives the latch 16 to slide in the groove of the fixed support 9 and disengage from the locking block 13, and the tailgate is opened inside the vehicle. After releasing the outside handle 2, the latch 16 is automatically reset under the combined action of the torsion spring 8 and the compression spring 23.

Claims

1. A locking mechanism for a rear door of an amphibious armored vehicle, characterized by: Including the inside handle, outside handle, key pin, spline shaft, torsion spring, fixed support, limit cover, adjustment screw, locking seat, locking block, adjustment handle, rolling pulley, latch, moving head, spline sleeve, plum blossom sleeve, stop pin, end cover; A key pin is provided in the lock hole of the outside handle, and the inner end of the key pin is fixed in the countersunk hole on the limit cover; the key pin is threadedly connected to the outside handle, and the limit cover is welded on the tailgate; the spline shaft passes through the center hole of the limit cover and extends into the vehicle body, a sealing ring is provided between the spline shaft and the center hole, and the force transmission hole of the outside handle cooperates with the spline at the outer end of the spline shaft and is axially positioned by a nut; A stop pin is arranged in the locking hole of the interior handle, a stop button is arranged at the inner end of the stop pin, a compression spring is arranged between the stop button and the bottom of the locking hole, and the compression spring is sleeved on the stop pin; the outer end of the key pin is placed in the groove of the fixed support; the fixed support is welded on the inner end surface of the limit cover, and the force transmission hole of the interior handle is matched with the inner end smooth axis of the spline shaft; The spline sleeve and the spline shaft are matched through splines. Two groups of arc grooves are provided on the side of the spline sleeve, each group has two arc grooves, and the phase angles of the two arc grooves differ by 180 degrees; the two groups of arc grooves are arranged axially, and the phase angles of the two groups of arc grooves differ by 90 degrees; steel balls are installed in the arc grooves; the plum blossom sleeve is designed with 4 grooves, which are arranged along the axis. The plum blossom sleeve and the force transmission hole have interference fit, and the plum blossom sleeve and the spline sleeve have clearance fit; The locking seat is welded on the inner wall of the base, the adjusting screw rod is installed in the center hole of the locking seat through a bearing, an end cover is installed at the end of the center hole of the locking seat, and an adjusting handle is provided at the end of the adjusting screw rod extending out of the end cover; a sliding groove is provided on the side wall of the locking seat, a locking block is screwed on the adjusting screw rod, and the locking block extends from the sliding groove to the handle inside the vehicle; A latch hole is provided at the inner end of the fixed support, and the axis of the latch hole is arranged perpendicularly and horizontally with the spline shaft. The latch hole is arranged corresponding to the locking block, and the latch hole is a blind hole with its opening facing the locking block; a latch is provided in the latch hole, and the latch contacts the locking block toward the locking block end and is located on the inner side of the locking block; the latch is connected to the bottom of the latch hole by a compression spring; a moving head is installed on the spline shaft, and corresponding to the moving head, a long straight hole I and a long straight hole II are respectively provided on the side wall of the latch hole and the latch, and the moving head can squeeze the long straight hole II to retract the latch; the spline shaft and the fixed support are connected by a torsion spring, and the torsion spring is sleeved on the spline shaft.

2. The rear door locking mechanism of an amphibious armored vehicle according to claim 1 is characterized in that: A key hole cover is arranged at the outer end of the lock hole.

3. The rear door locking mechanism of an amphibious armored vehicle according to claim 1 is characterized in that: The protruding end of the locking block is provided with a rolling pulley; the rolling pulley is installed on the locking block through a pin shaft, the pin shaft is vertically arranged, and the locking bolt contacts the rolling pulley.

4. The rear door locking mechanism of an amphibious armored vehicle according to claim 1 is characterized in that: A sealing strip is arranged between the tailgate and the base, and the sealing strip is fixedly mounted on the tailgate.

5. The rear door locking mechanism of an amphibious armored vehicle according to claim 1 is characterized in that: The surface of the moving head in contact with the long straight hole II is an arc surface.

6. The rear door locking mechanism of an amphibious armored vehicle according to claim 1 is characterized in that: The locking latch is wedge-shaped toward the locking block.

Images