Automobile tailgate with self-locking and automatic unlocking

Abstract

The present application relates to the technical field of automobile tailgates, and discloses an automobile tailgate with self-locking and automatic unlocking, which comprises a main beam, a bearing platform and a lifting cylinder for driving the bearing platform to lift, the main beam is provided with a mounting seat, the top of the mounting seat is hinged with a follower arm which swings with the driving of the lifting cylinder, the mounting seat is provided with a lock catch mechanism for fixing the follower arm in the mounting cavity, the follower arm is provided with a lifting beam which drives the bearing platform to lower or raise with the swinging of the follower arm, and the lifting beam is provided with an unlocking block; the follower arm is fixed on the mounting seat through the lock catch mechanism, so that the lifting beam and the lifting cylinder provide bearing force for the lifting beam during the driving of the bearing platform to lift, and the bearing platform will not tilt downward to cause goods to fall due to insufficient bearing capacity during lifting; and the lock catch mechanism can be separated from the follower arm through the unlocking block on the lifting beam, so that the follower arm can drive the bearing platform to lower or raise through the lifting beam.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of automobile tailgates, in particular to an automobile tailgate with self-locking and automatic unlocking. BACKGROUND

[0002] The automobile tailgate is also called automobile lifting tailgate, automobile loading and unloading tailgate, lifting tailgate, hydraulic automobile tailgate, and truck tailgate, which is a kind of hydraulic lifting loading and unloading equipment installed at the tail of a truck and various vehicles and powered by a vehicle-mounted battery.

[0003] In the prior art, the bearing platform in the automobile tailgate is driven to lower or lift by using a follow-up arm, but the follow-up arm is prone to tilting and causing the falling of loaded or unloaded objects during the lifting of the bearing platform by the lifting beam and the lifting cylinder. SUMMARY

[0004] The present application aims to provide an automobile tailgate with self-locking and automatic unlocking, which solves the problem of insufficient bearing capacity and downward tilting of the bearing platform of the automobile tailgate during lifting in the prior art.

[0005] The present application is implemented as follows: the automobile tailgate with self-locking and automatic unlocking comprises a main beam, a bearing platform, and a lifting cylinder for driving the lifting of the bearing platform, the main beam is provided with a mounting seat, the top of the mounting seat is hinged with a follow-up arm that swings with the driving of the lifting cylinder, the mounting seat has a mounting cavity for the swinging of the follow-up arm and externally open, the top of the follow-up arm is connected with the top of the mounting cavity through a shaft pin, the mounting seat is provided with a lock catch mechanism for fixing the follow-up arm in the mounting cavity, and the lock catch mechanism is located on the outside of the mounting seat.

[0006] The follow-up arm is provided with a lifting beam that drives the lowering or lifting of the bearing platform with the swinging of the follow-up arm, the inner end of the lifting beam is hinged to the middle part of the follow-up arm, the top of the outer end of the lifting beam is hingedly connected with the bearing platform, and the bottom of the outer end of the lifting beam is hingedly connected with the lifting cylinder; the lifting beam is provided with an unlocking block for separating the lock catch mechanism from the follow-up arm, the lifting beam has a mounting end face facing the lock catch mechanism, and the unlocking block is located on the mounting end face.

[0007] When the lifting cylinder drives the bearing platform to descend to a set position, the lifting beam controls the unlocking block to drive the lock catch mechanism to separate from the follow-up arm.

[0008] When the lifting cylinder drives the bearing platform to ascend to a set position, the lifting beam controls the unlocking block to separate from the lock catch mechanism, and the lock catch mechanism automatically fixes the follow-up arm on the mounting seat.

[0009] Further, the locking mechanism comprises a locking seat, wherein a locking block is arranged to fix or separate the follow-up arm from the mounting seat, the outer end of the locking block is exposed outside the locking seat, the inner end of the locking block is located in the locking seat, the locking seat is provided with an elastic element to drive the locking block to elastically expand or contract, and the elastic element is located between the locking block and the locking seat.

[0010] Further, the mounting seat is provided with a first lock hole for the locking block to pass through, and the follow-up arm is provided with a second lock hole for the locking block to pass through, and the second lock hole is communicated with the first lock hole through the mounting cavity.

[0011] Further, the outer end of the locking block is provided with a shaft shoulder to limit the depth of the locking block passing through the first lock hole, and the shaft shoulder is arranged along the outer periphery of the outer end of the locking block; and the inner end of the locking block is provided with a circular hole for the elastic element to be inserted, and the circular hole is located in the locking seat.

[0012] Further, the outer end of the locking block is provided with a first inclined surface arranged obliquely;

[0013] When the locking block is passed through the first lock hole to the outside of the second lock hole, the locking block fixes the follow-up arm on the mounting seat, and the first inclined surface is exposed in the follow-up arm;

[0014] When the unlocking block drives the locking block to move towards the locking seat to a certain distance, and the first inclined surface of the locking block is located in the second lock hole on the follow-up arm, in the process that the lifting cylinder drives the follow-up arm to swing towards the bearing platform, the follow-up arm controls the second lock hole to extrude towards the first inclined surface, the locking block moves towards the locking seat, until the second lock hole is separated from the locking block, and the first inclined surface is exposed outside the follow-up arm.

[0015] Further, the follow-up arm has an internal cavity with an external opening, and the internal cavity is communicated with the mounting cavity through the second lock hole;

[0016] When the locking block is passed through the first lock hole to the outside of the second lock hole, the locking block fixes the follow-up arm on the mounting seat, and the first inclined surface is exposed in the internal cavity;

[0017] When the lifting cylinder drives the bearing platform to descend to a certain position, the lifting beam controls the unlocking block to move into the internal cavity and abut against the locking block, and the unlocking block drives the locking block to separate from the internal cavity of the follow-up arm.

[0018] Further, the unlocking block is provided with a second inclined surface arranged obliquely;

[0019] In the process that the unlocking block drives the locking block to move towards the locking seat, the second inclined surface abuts against the locking block.

[0020] Further, the unlocking block is arranged longitudinally opposite to the locking block.

[0021] Further, the lifting beam is above the lifting cylinder, and the second locking hole is between the lifting beam and the lifting cylinder.

[0022] Further, the upper part of the unlocking block is provided with a positioning strip hole for a screw to pass through, the positioning strip hole is arranged along the length direction of the upper part of the unlocking block, and the lower part of the unlocking block is exposed outside the lifting beam.

[0023] Compared with the prior art, the automobile tailboard with self-locking and automatic unlocking provided by the application fixes the follower arm on the mounting seat through the locking buckle mechanism, so that the lifting beam and the lifting cylinder provide bearing force for the lifting beam during driving the bearing platform to lift and lower, so that the bearing platform does not tilt downward to cause goods to fall due to insufficient bearing capacity during lifting and lowering; and the locking buckle mechanism can be separated from the follower arm through the unlocking block on the lifting beam, so that the follower arm can drive the bearing platform to perform a low head or a high head action through the lifting beam. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 is a perspective view of the automobile tailboard with self-locking and automatic unlocking provided by the application;

[0025] Figure 2 is a structural view of the automobile tailboard with self-locking and automatic unlocking provided by the application;

[0026] Figure 3 is a perspective view of the automobile tailboard with self-locking and automatic unlocking provided by the application;

[0027] Figure 4 is a perspective view of the automobile tailboard with self-locking and automatic unlocking provided by the application;

[0028] Figure 5 is a perspective view of the automobile tailboard with self-locking and automatic unlocking provided by the application; Figure 1 ;

[0029] Figure 6 is a perspective view of the automobile tailboard with self-locking and automatic unlocking provided by the application; Figure 2 ;

[0030] Figure 7 is a perspective view of the automobile tailboard with self-locking and automatic unlocking provided by the application; Figure 3 .

[0031] In the figure: the main beam 100, the bearing platform 200, the lifting cylinder 300, the mounting seat 400, the follow-up arm 500, the lock catch mechanism 600, the lifting beam 700, the unlocking block 800, the mounting cavity 401, the first lock hole 402, the second lock hole 501, the inner cavity 502, the lock catch seat 601, the locking block 602, the elastic element 603, the shaft shoulder 604, the round hole 605, the first inclined surface 606, the second inclined surface 801, the positioning strip hole 802, the screw 803. DETAILED DESCRIPTION

[0032] In order to make the objects, technical solutions and advantages of the present application clearer, the present application will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and not intended to limit the present application.

[0033] The implementation of the present application will be described in detail below with reference to specific embodiments.

[0034] In the drawings of the embodiments, the same or similar reference numerals correspond to the same or similar components; in the description of the present application, it should be understood that the orientations or positional relationships indicated by terms such as "upper", "lower", "left", "right" are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore the terms describing the positional relationship in the drawings are only used for exemplary illustration and cannot be understood as a limitation on the present application, for those skilled in the art, the specific meanings of the above terms can be understood according to the specific circumstances.

[0035] Referring to Figures 1-7 , the preferred embodiment provided by the present application is shown.

[0036] The automobile tailgate with self-locking and automatic unlocking comprises a main beam 100, a bearing platform 200 and a lifting cylinder 300 for driving the lifting of the bearing platform 200, the main beam 100 is provided with a mounting seat 400, the top of the mounting seat 400 is hinged with a follow-up arm 500 which swings with the driving of the lifting cylinder 300, the mounting seat 400 has a mounting cavity 401 which is open outside and in which the follow-up arm 500 swings, the top of the follow-up arm 500 is connected with the top of the mounting cavity 401 through a shaft pin, the mounting seat 400 is provided with a lock catch mechanism 600 which fixes the follow-up arm 500 in the mounting cavity 401, the lock catch mechanism 600 is located on the outside of the mounting seat 400;

[0037] The lifting beam 700 is installed on the follow-up arm 500 to drive the carrying platform 200 to lower or raise, the inner end of the lifting beam 700 is hinged to the middle part of the follow-up arm 500, the outer end top of the lifting beam 700 is hinged and connected with the carrying platform 200, and the outer end bottom of the lifting beam 700 is hinged and connected with the lifting cylinder 300; the unlocking block 800 is arranged on the lifting beam 700 to separate the locking buckle mechanism 600 from the follow-up arm 500, the lifting beam 700 has a mounting end face facing the locking buckle mechanism 600, and the unlocking block 800 is located on the mounting end face;

[0038] When the lifting cylinder 300 drives the carrying platform 200 to descend to the set position, the lifting beam 700 controls the unlocking block 800 to drive the locking buckle mechanism 600 to separate from the follow-up arm 500;

[0039] When the lifting cylinder 300 drives the carrying platform 200 to rise to the set position, the lifting beam 700 controls the unlocking block 800 to separate from the locking buckle mechanism 600, and the locking buckle mechanism 600 automatically fixes the follow-up arm 500 on the mounting seat 400.

[0040] The automobile tailboard with self-locking and automatic unlocking provided in the above is fixed on the mounting seat 400 through the locking buckle mechanism 600, so that the lifting beam 700 and the lifting cylinder 300 provide the carrying force for the lifting beam 700 through the follow-up arm 500 during the driving of the carrying platform 200 to rise and fall, and the carrying platform 200 does not tilt downward to cause the goods to fall due to insufficient carrying capacity during the rising and falling; and the locking buckle mechanism 600 can be separated from the follow-up arm 500 through the unlocking block 800 on the lifting beam 700, so that the follow-up arm 500 can drive the carrying platform 200 to lower or raise through the lifting beam 700.

[0041] In the embodiment, the locking buckle mechanism 600 comprises a locking buckle seat 601, the locking buckle seat 601 is provided with a locking block 602 that is elastically extended and retracted to fix or separate the follow-up arm 500 from the mounting seat 400, the outer end of the locking block 602 is exposed outside the locking buckle seat 601, the inner end of the locking block 602 is located in the locking buckle seat 601, the locking buckle seat 601 is provided with an elastic element 603 that drives the locking block 602 to elastically extend and retract, and the elastic element 603 is located between the locking block 602 and the locking buckle seat 601.

[0042] The locking buckle seat 601 is installed on the mounting seat 400, the locking buckle seat 601 elastically drives the locking block 602 to fix the follow-up arm 500 on the mounting seat 400, so that the follow-up arm 500 does not rotate or swing at will, and then the follow-up arm 500 provides the carrying force for the lifting beam 700, and the lifting beam 700 can provide the carrying force for the carrying platform 200.

[0043] The mounting seat 400 is provided with a first locking hole 402 through which the locking block 602 penetrates, and the follow-up arm 500 is provided with a second locking hole 501 through which the locking block 602 penetrates, and the second locking hole 501 is in communication with the first locking hole 402 through the mounting cavity 401.

[0044] The locking block 602 penetrates through the first locking hole 402 in the mounting seat 400 to the outside of the second locking hole 501 in the follow-up arm 500, and the follow-up arm 500 is fixed on the mounting seat 400, and at this time, the centers of the first locking hole 402 and the second locking hole 501 are horizontally coincident.

[0045] In this embodiment, the outer end of the locking block 602 is provided with a shaft shoulder 604 limiting the penetration depth of the locking block 602 through the first locking hole 402, and the shaft shoulder 604 is arranged along the outer periphery of the outer end of the locking block 602; and the inner end of the locking block 602 is provided with a circular hole 605 for inserting the elastic element 603, and the circular hole 605 is located in the locking seat 601.

[0046] The shaft shoulder 604 abuts against the outside of the first locking hole 402 to limit the length of the locking block 602 penetrating through the first locking hole 402, which can avoid the locking block 602 from completely separating from the locking seat 601; and the circular hole 605 can increase the directional driving of the elastic element 603 to the locking block 602.

[0047] In this embodiment, the outer end of the locking block 602 is provided with a first inclined surface 606 arranged obliquely;

[0048] When the locking block 602 penetrates through the first locking hole 402 to the outside of the second locking hole 501, the locking block 602 fixes the follow-up arm 500 on the mounting seat 400, and the first inclined surface 606 is exposed in the follow-up arm 500;

[0049] When the unlocking block 800 drives the locking block 602 to move towards the locking seat 601 to a certain distance, and the first inclined surface 606 of the locking block 602 is located in the second locking hole 501 on the follow-up arm 500, the follow-up arm 500 controls the second locking hole 501 to be extruded towards the first inclined surface 606 in the process of the lifting cylinder 300 and the self-weight of the bearing platform or the gravity of the goods driving the follow-up arm 500 to swing towards the bearing platform 200, the locking block 602 moves towards the locking seat 601, and until the second locking hole 501 is separated from the locking block 602, the first inclined surface 606 is exposed outside the follow-up arm 500.

[0050] The first inclined surface 606 can make the locking block 602 be pushed away from the second locking hole 501 completely when the locking block 602 is not completely separated from the second locking hole 501, and the inner side wall of the second locking hole 501 can push the first inclined surface 606, so that the locking block 602 is completely pushed away from the second locking hole 501, and the locking block 602 no longer limits the rotation of the follow-up arm 500.

[0051] In this embodiment, the inner cavity 502 of the follow-up arm 500 has an external opening, and the inner cavity 502 communicates with the mounting cavity 401 through the second lock hole 501;

[0052] When the locking block 602 is penetrated by the first lock hole 402 to the outside of the second lock hole 501, the locking block 602 fixes the follow-up arm 500 on the mounting seat 400, and the first inclined surface 606 is exposed in the inner cavity 502;

[0053] When the lifting cylinder 300 drives the bearing platform 200 to descend to the set position, the lifting beam 700 controls the unlocking block 800 to move into the inner cavity 502 and abut against the locking block 602, and the unlocking block 800 drives the locking block 602 to separate from the inner cavity 502 of the follow-up arm 500.

[0054] The space of the inner cavity 502 allows the unlocking block 800 to abut against the locking block 602 and drive the locking block 602 to separate from the inner cavity 502 of the follow-up arm 500.

[0055] In this embodiment, the unlocking block 800 is provided with a second inclined surface 801 arranged obliquely;

[0056] When the unlocking block 800 drives the locking block 602 to move towards the lock seat 601, the second inclined surface 801 abuts against the locking block 602.

[0057] The second inclined surface 801 allows the unlocking block 800 to reduce the frictional resistance between the unlocking block 800 and the locking block 602 when pushing the locking block 602 to move towards the lock seat 601, so that the unlocking block 800 drives the locking block 602 more labor-saving and reduces the frictional loss of the unlocking block 800 to the locking block 602.

[0058] The unlocking block 800 and the locking block 602 are arranged longitudinally opposite to each other, so that the unlocking block 800 abuts against and drives the locking block 602 more accurately.

[0059] The lifting beam 700 is located above the lifting cylinder 300, and the second lock hole 501 is located between the lifting beam 700 and the lifting cylinder 300; in this way, the follow-up arm 500 can be more stably fixed by the locking block 602, so that the follow-up arm 500 can provide stable bearing force and also protect the fixed position of itself.

[0060] The upper part of the unlocking block 800 is provided with a positioning strip hole 802 through which a screw 803 penetrates, and the positioning strip hole 802 extends along the length direction of the upper part of the unlocking block 800; the lower part of the unlocking block 800 is exposed outside the lifting beam 700; in this way, the position of the unlocking block 800 installed on the lifting beam 700 can be fine-tuned through the positioning strip hole 802; and the lower part of the unlocking block 800 is exposed outside the lifting beam 700, so that the unlocking block 800 can better drive the locking block 602 to move.

[0061] The above description is only the preferred embodiment of the present application, and is not intended to limit the present application. Any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A tailgate for a vehicle having self-locking and automatic unlocking, characterized in that, The utility model provides a lifting mechanism of a lifting platform, which comprises a main beam and a bearing platform, a lifting cylinder for driving the bearing platform to lift, a mounting seat provided on the main beam, a follower arm hinged on the top of the mounting seat and swinging with the driving of the lifting cylinder, a mounting cavity in the mounting seat for the swinging of the follower arm and externally open, the top of the follower arm and the top of the mounting cavity being connected through a shaft pin, a locking mechanism provided on the mounting seat for fixing the follower arm in the mounting cavity, the locking mechanism being located on the outside of the mounting seat; A lifting beam is installed on the follower arm and drives the bearing platform to lower or raise with the swinging of the follower arm, the inner end of the lifting beam is hinged on the middle part of the follower arm, the top of the outer end of the lifting beam is hingedly connected with the bearing platform, the bottom of the outer end of the lifting beam is hingedly connected with the lifting cylinder, the lifting beam is provided with an unlocking block for separating the locking mechanism from the follower arm, the lifting beam has a mounting end face facing the locking mechanism, and the unlocking block is located on the mounting end face; When the lifting cylinder drives the bearing platform to drop to a set position, the lifting beam controls the unlocking block to drive the locking mechanism to separate from the follower arm; When the lifting cylinder drives the bearing platform to rise to a set position, the lifting beam controls the unlocking block to separate from the locking mechanism, and the locking mechanism automatically fixes the follower arm on the mounting seat; The locking mechanism comprises a locking seat, a locking block in the locking seat for fixing or separating the follower arm from the mounting seat, the outer end of the locking block being exposed outside the locking seat, the inner end of the locking block being located in the locking seat, an elastic element in the locking seat for driving the locking block to elastically extend and retract, and the elastic element being located between the locking block and the locking seat; The mounting seat is provided with a first lock hole for the locking block to pass through, and the follower arm is provided with a second lock hole for the locking block to pass through, the second lock hole being communicated with the first lock hole through the mounting cavity; The outer end of the locking block is provided with a first inclined surface arranged obliquely; When the locking block passes through the first lock hole to the outside of the second lock hole, the locking block fixes the follower arm on the mounting seat, and the first inclined surface is exposed in the follower arm; When the unlocking block drives the locking block to move to a set distance towards the locking seat, and the first inclined surface of the locking block is located in the second lock hole on the follower arm, in the process that the lifting cylinder drives the follower arm to swing towards the bearing platform, the follower arm controls the second lock hole to be pressed towards the first inclined surface, the locking block moves towards the locking seat, until the second lock hole is separated from the locking block, and the first inclined surface is exposed outside the follower arm.

2. The self-locking and automatically unlocking tailgate of an automobile according to claim 1, wherein The outer end of the locking block is provided with a shaft shoulder limiting the depth of the locking block passing through the first lock hole, the shaft shoulder being arranged around the outer periphery of the outer end of the locking block, and the inner end of the locking block is provided with a round hole for the elastic element to be inserted, the round hole being located in the locking seat.

3. The self-locking and automatically unlocking tailgate of claim 1, wherein, The follower arm has an internally open internal cavity, and the internal cavity is communicated with the mounting cavity through the second lock hole; When the locking block passes through the first lock hole to the outside of the second lock hole, the locking block fixes the follower arm on the mounting seat, and the first inclined surface is exposed in the internal cavity. When the lifting cylinder drives the bearing platform to descend to a set position, the lifting beam controls the unlocking block to move to the inner cavity and abut against the locking block, and the unlocking block drives the locking block to separate from the inner cavity of the follow-up arm.

4. The self-locking and automatically unlocking tailgate of a vehicle according to any one of claims 1 to 3, wherein The unlocking block is provided with a second inclined surface arranged obliquely. When the unlocking block drives the locking block to move towards the lock seat, the second inclined surface abuts against the locking block.

5. The self-locking and self-unlocking tailgate of any one of claims 1 to 2, wherein, The unlocking block and the locking block are arranged longitudinally opposite to each other.

6. The self-locking and automatically unlocking tailgate of an automobile according to claim 1, wherein The lifting beam is located above the lifting cylinder, and the second lock hole is located between the lifting beam and the lifting cylinder.

7. The self-locking and self-unlocking tailgate of any one of claims 1 to 3, wherein, The upper part of the unlocking block is provided with a positioning strip hole through which a screw penetrates, the positioning strip hole is arranged along the length direction of the upper part of the unlocking block, and the lower part of the unlocking block is exposed outside the lifting beam.

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