Rapidly-assembled trailer ball cover lock

Abstract

The utility model relates to the technical field of automobile trailer ball covers, in particular to a fast-assembly type trailer ball cover lock, which solves the problem that a traditional ball cover lock needs to be locked by two hands of a worker, and comprises a lock body, a ball head is arranged on the lock body, a lock hole used for installing a lock rod is arranged on the lock body, and the lock rod is installed in the lock hole. The lock body and the lock rod are matched to lock the ball cover connector installed on the ball head, an installation shell is installed on the lock body, a check block is movably installed in the installation shell, a spring used for providing elastic force for the check block is arranged in the installation shell, and an inclined stress face is arranged at the end of the check block. When the ball head on the lock body is installed in the ball cover connector, the edge of the ball cover connector acts on the stress face of the check block to enable the check block to move, when the edge of the ball cover connector passes through the check block, the edge of the ball cover connector does not exert force on the check block any more, the spring drives the check block to rebound, the rebound check block blocks the edge of the ball cover connector, and therefore the lock body is locked. A lock cylinder is arranged on the lock body and used for locking the lock rod.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of automobile trailer ball cover, specifically to a quick -mounting type trailer ball cover lock. BACKGROUND

[0002] It is known that trailer ball is also called trailer hook, ball type rear trailer hook or trailer rod, traction rod etc., the trailer ball is a complete set of trailer system in broad sense, it is composed of three parts: fixed support, ball and power line bundle, the automobile trailer ball cover lock is a locking device for fixing the trailer ball cover, when locking the trailer ball, a trailer lock cover is often used.

[0003] The existing ball cover lock comprises a lock body, a tooth rod which can be installed on the lock body, a lock tongue and a lock cylinder which are installed in the lock body respectively, and a key which is matched with the lock cylinder, and a spherical structure matched with the ball cover is arranged on the lock body.

[0004] The existing ball cover lock has the following obvious deficiencies in the installation operation process:

[0005] The existing ball cover lock installation process needs to be cooperated with both hands, the ball head is installed into the ball cover connector, due to the downward setting of the connecting port of the traditional ball cover connector, one hand needs to hold the lock body, otherwise the lock body will naturally fall due to gravity, and the other hand inserts the lock rod into the lock hole to complete the locking, so that the lock rod and the lock body need to be connected by both hands.

[0006] For personnel who need to hold tools for daily operation, the tools in the hands need to be put down to connect the lock rod and the lock body. INVENTION CONTENTS

[0007] (I) technical problems solved

[0008] In view of the deficiencies of the prior art, the utility model provides a quick -mounting type trailer ball cover lock, and solves the problem that the traditional ball cover lock needs to be cooperated with both hands of the worker for locking.

[0009] (II) technical scheme

[0010] In order to achieve the above object, the utility model provides the following technical scheme: a quick -mounting trailer ball cover lock, including the lock body, be provided with the ball head on the lock body, the lock hole for installing the lock rod is seted up on the lock body, the lock rod is installed in the lock hole, the lock body and the lock rod cooperate and lock the ball cover connector installed on the ball head, install the shell on the lock body, the movable mounting has the fender in the shell, spring for providing the fender is seted up in the shell, and the end of fender is provided with the inclined stress surface, when the ball head on the lock body is installed to the ball cover connector, the rim of ball cover connector acts on the stress surface of fender and makes fender produce movement, when the rim of ball cover connector passes through fender, the rim of ball cover connector no longer exerts force on fender, the spring drives fender to rebound, and the rim of ball cover connector is blocked by the rebounded fender.

[0011] Further, the lock body is provided with a lock cylinder, and the lock cylinder is used for locking the lock rod.

[0012] Further, the lock rod is provided with lock grooves with different heights.

[0013] Further, the fender is fixedly provided with a pushing block, and the installation shell is provided with a through slot for the pushing block to pass through.

[0014] Further, the installation shell can be displaced on the lock body to switch the blocking state of the fender to the rim of the ball cover connector.

[0015] Further, the installation shell is provided with a connecting frame for driving the installation shell to move, the lock body is provided with a connecting piece, the connecting frame penetrates the connecting piece, and the connecting frame can move along the guide direction of the connecting piece.

[0016] Further, the connecting frame is provided with a convex driving block.

[0017] Further, the installation shell is provided with a connecting block for fixing the end of the spring, and the installation shell is provided with a connecting shaft, and the inside of the fender is provided with a sliding groove matched with the connecting shaft.

[0018] Further, the lock rod has a structure that one side is longer and the other side is shorter, the lock groove is arranged on the shorter side of the lock rod, and the bottom of the longer side of the lock rod is provided with a limiting block.

[0019] Further, the diameter of the limiting block is greater than that of the lock hole.

[0020] (Three) beneficial effects

[0021] Compared with the prior art, the utility model provides a quick -mounting trailer ball cover lock, which has the following beneficial effects:

[0022] The quick-assembly trailer ball cover lock is provided with a mounting shell, a stop block and a spring, and the end of the stop block is provided with an inclined stress surface; when the lock body is assembled, the ball head is assembled in the ball cover connector from bottom to top, the force of the edge of the ball cover connector acts on the inclined stress surface of the stop block to make it move, after the edge of the ball cover connector passes the stop block, the spring drives the stop block to rebound to block the edge, the stop block is blocked above the edge of the ball cover connector, and the falling of the lock body is prevented, and then the lock rod is inserted into the lock hole on the lock body, and one hand can complete the assembly of the lock rod and the lock body, so that two-hand operation is not needed, and the convenience and practicality of operation are improved.

[0023] For the personnel who usually hold tools, one-hand operation avoids the inconvenience of two-hand operation, so that they can easily assemble the ball cover lock without putting down the tools in work; for special groups such as the one-armed disabled, the design solves the problem that they cannot operate in the past, enhances the applicability of the product to different groups of people, and reflects the friendliness of the product use. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 It is a perspective structural schematic view of the utility model;

[0025] Figure 2 It is a front view structural schematic view of the utility model;

[0026] Figure 3 It is a perspective structural schematic view of the lock body and the ball cover connector cooperation, wherein the first embodiment of the moving stop block is adopted;

[0027] Figure 4 It is a perspective structural schematic view of the lock body and the ball cover connector cooperation, wherein the second embodiment of the moving stop block is adopted;

[0028] Figure 5 It is a perspective structural schematic view of the lock body and the ball cover connector cooperation, wherein the second embodiment of the moving stop block is adopted;

[0029] Figure 6 It is a perspective structural schematic view of the stop block, wherein it is the stop block in the first embodiment;

[0030] Figure 7 It is a sectional view structural schematic view of the stop block, wherein it is the stop block in the first embodiment;

[0031] Figure 8 It is a perspective structural schematic view of the stop block, wherein it is the stop block in the second embodiment;

[0032] Figure 9 It is a sectional view structural schematic view of the stop block, wherein it is the stop block in the second embodiment;

[0033] Figure 10 As shown in the utility model Figure 1 The structure schematic view of the partial enlargement at A shown in the utility model;

[0034] Figure 11 As shown in the utility model Figure 5 The structure schematic view of the partial enlargement at B shown in the utility model;

[0035] Figure 12 The first three-dimensional structure schematic view of the utility model upside down, wherein, the handle is installed on the lock body;

[0036] Figure 13 The second three-dimensional structure schematic view of the utility model upside down, wherein, the handle is installed on the lock body.

[0037] In the drawing: 1, lock body; 2, lock rod; 3, lock hole; 4, lock slot; 5, lock core; 6, ball head; 7, ball cover connector; 8, edge; 9, limiting block; 10, installation shell; 11, stop block; 12, stress surface; 13, spring; 14, connecting block; 15, connecting shaft; 16, sliding slot; 17, through slot; 18, push block; 19, connecting frame; 20, connecting piece; 21, driving block; 22, mounting block; 23, handle; 24, connecting shaft; 25, non-slip pad; 26, nameplate. DETAILED DESCRIPTION

[0038] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0039] Please refer to Figure 1 And Figure 2 The utility model discloses a quick -wearing type trailer ball cover lock, including the lock body 1, be provided with the ball -like ball head 6 on the lock body 1, but, any shape, structure's ball head 6 can use on the ball head 6 of the utility model, for example, the ball head 6 of the shape such as cylinder, hook body.

[0040] As Figures 3-5As shown, the lock body 1 is provided with a lock hole 3 for installing the lock rod 2, the lock rod 2 is installed in the lock hole 3, the lock body 1 and the lock rod 2 cooperate to lock the ball cover connector 7 installed on the ball head 6, the lock body 1 is provided with a lock cylinder 5, the lock cylinder 5 is used to lock the lock rod 2, the lock rod 2 is provided with a lock slot 4, and a key matched with the lock cylinder 5 and a lock tongue provided on the lock cylinder 5 are further provided, when the lock rod 2 needs to be locked, the key matched therewith is inserted into the lock cylinder 5, the key is rotated to drive the lock tongue on the lock cylinder 5 to move, the lock tongue enters the lock slot 4 on the lock rod 2, the locking of the lock rod 2 is completed, and the lock body 1 is in a locked state; when unlocking is needed, the key is also inserted into the lock cylinder 5, the key is reversely twisted, and the lock tongue is withdrawn from the lock slot 4, at this time, the lock body 1 cannot lock the lock rod 2, and the lock rod 2 is in an openable state, at this time, the lock rod 2 can be taken out of the lock hole 3.

[0041] The lock slot 4 on the lock rod 2 is provided with a plurality of lock slots 4, the heights of the plurality of lock slots 4 on the lock rod 2 are different, the lock tongue is locked into different lock slots 4, the reserved height of the upper part of the lock rod 2 can be adjusted, therefore, the upper part of the lock rod 2 has different reserved heights, and the lock rod 2 can be matched with ball cover connectors 7 of different heights.

[0042] The lock body 1 is provided with a mounting shell 10, the mounting shell 10 is movably provided with a stop block 11, the number of the stop block 11 is at least one, the mounting shell 10 is provided with a spring 13 for providing elastic force to the stop block 11, the mounting shell 10 is provided with a connecting block 14 for fixing the end of the spring 13, and the mounting shell 10 is provided with a connecting shaft 15, the inside of the stop block 11 is provided with a sliding groove 16 matched with the connecting shaft 15, and the cooperation of the connecting shaft 15 and the sliding groove 16 improves the stability of the movement of the stop block 11. The end of the stop block 11 is provided with an inclined stress surface 12, and the stress surface 12 faces upward, when the ball head 6 on the lock body 1 is installed into the ball cover connector 7 from bottom to top, the edge 8 of the ball cover connector 7 will generate a force on the stress surface 12 of the stop block 11, the edge 8 of the ball cover connector 7 acts on the stress surface 12 of the stop block 11 to make the stop block 11 move, when the edge 8 of the ball cover connector 7 passes through the stop block 11, at this time, the edge 8 is below the stop block 11, the edge 8 of the ball cover connector 7 no longer exerts force on the stop block 11, the spring 13 drives the stop block 11 to rebound, the bottom of the rebounded stop block 11 is blocked above the edge 8 of the ball cover connector 7, and the falling of the lock body 1 is prevented, at this time, the lock rod 2 is inserted into the lock hole 3 on the lock body 1, and the installation of the lock rod 2 and the lock body 1 can be completed by one hand.

[0043] When the lock body 1 is disassembled, the stop block 11 needs to be moved, otherwise the ball head 6 cannot be taken out of the ball cover connector 7, and the following two embodiments are provided for moving the stop block 11.

[0044] The first embodiment for moving the stop block 11 is as follows: Figure 3 , 6, 7, 10, the mounting shell 10 and the lock body 1 are fixedly connected, the stopper 11 is fixedly provided with a pushing block 18, and the mounting shell 10 is provided with a through slot 17 for the pushing block 18 to pass through. After the lock rod 2 is opened, the pushing block 18 is pushed along the length direction of the through slot 17, so that the stopper 11 is away from the edge 8 of the ball cover connector 7, and at this moment, the ball head 6 on the lock body 1 can be disassembled from the ball cover connector 7. The outer wall of the pushing block 18 is provided with a protective pattern.

[0045] The second embodiment of the moving stopper 11 is shown in Figs. Figure 4 , 5 , 8, 9, 11, the mounting shell 10 can be displaced on the lock body 1 to switch the blocking state of the stopper 11 to the edge 8 of the ball cover connector 7, that is, when the stopper 11 is close to and above the edge 8 of the ball cover connector 7, the stopper 11 can block the edge 8 of the ball cover connector 7; when the stopper 11 is away from and not above the edge 8 of the ball cover connector 7, the stopper 11 cannot block the edge 8 of the ball cover connector 7, and the movement of the mounting shell 10 can switch the position (blocking state) of the stopper 11. The mounting shell 10 is provided with a connecting frame 19 for driving the movement of the mounting shell 10, the lock body 1 is provided with a connecting piece 20, the connecting frame 19 penetrates through the connecting piece 20, the connecting frame 19 can move along the guiding direction in the connecting piece 20, and the connecting frame 19 is provided with a protruding driving block 21 to facilitate the driving and operation of the connecting frame 19. After the lock rod 2 is opened, the connecting frame 19 is driven to make the stopper 11 in the mounting shell 10 away from the edge 8 of the ball cover connector 7, so that the stopper is not above the edge 8 of the ball cover connector 7, and at this moment, the ball head 6 on the lock body 1 can be disassembled from the ball cover connector 7.

[0046] Further, in order to facilitate the installation of the lock rod 2, the lock rod 2 has a structure that one side is longer and the other side is shorter, the lock slot 4 is arranged on the shorter side of the lock rod 2, and the longer side of the lock rod 2 is provided with a limiting block 9 at the bottom, and the diameter of the limiting block 9 is greater than that of the lock hole 3. After the shorter side of the lock rod 2 is pulled out of the lock hole 3, the longer side of the lock rod 2 can be rotated in the axial direction of the lock hole 3, and the limiting block 9 prevents the lock rod 2 from being separated from the lock body 1, thereby preventing the lock rod 2 from being lost, and facilitating the insertion of the lock rod 2 into the lock hole 3.

[0047] As shown in Figs. Figure 12 , a handle 23 is further arranged at the bottom end face of the lock body 1, and a gap is reserved between the inside of the handle 23 and the bottom wall of the lock body 1 for the hand to pass through. During the installation process, the hand passes through the gap in the inside of the handle 23, and the palm holds the bottom end face of the lock body 1, so that the lock body 1 can be held steadily. The arrangement of the handle 23 can effectively enhance the stability of holding the lock body 1, avoid the lock body 1 from falling due to hand slipping or improper operation, further reduce the risk of accidents caused by the falling of the lock body 1 during the installation process, and ensure the smooth installation of the lock body 1.

[0048] AsFigures 12-13 As shown, further detailed explanation, the lock body 1 is fixedly provided with a mounting block 22 on the bottom end surface, the mounting block 22 is connected with the handle 23 through a connecting shaft 24, so that the handle 23 can be flexibly folded, and there is a certain damping force between the handle 23 and the mounting block 22, so that the handle 23 can be kept at a certain inclination angle. When the handle 23 needs to be used, the handle 23 can be folded downward along the connecting shaft 24 until the handle 23 is perpendicular to the bottom end surface of the lock body 1, at this time, the handle 23 is in a use state, and it is convenient to hold (lift) the lock body 1 by hand through the handle 23. When the handle 23 does not need to be used, it is folded forward or backward along the connecting shaft 24, so that the handle 23 is parallel to the bottom end surface of the lock body 1. Such a design can effectively reduce the space occupied by the lock body 1 when it is stored or placed, and facilitate the proper storage or carrying of the lock body 1.

[0049] As shown, Figures 12-13 A layer of anti-skid pad 25 is additionally provided on the bottom end surface of the lock body 1. When the hand holds (lifts) the lock body 1 through the handle 23, the anti-skid pad 25 is in close contact with the hand, effectively increases the friction, provides the effect of anti-skid, avoids the lock body 1 from falling accidentally due to hand slipping, and ensures the safety and stability in the operation process. In addition, considering that the lock body 1 is usually made of metal material, direct contact will make the hand feel cold and uncomfortable in cold winter. The anti-skid pad 25 just acts as a barrier layer to separate the lock body 1 from the hand, so that the lock body 1 can be comfortably held even in severe cold weather, and the hand is prevented from being subjected to cold touch.

[0050] As shown, Figures 12-13 In order to facilitate quick finding of the matched lock body 1, a nameplate 26 is arranged on the outer wall of the lock body 1, and the nameplate 26 clearly marks various key model information, such as the specific length of the lock rod 2, the upper limit and the lower limit of the lock rod 2, the diameter or the model of the ball head 6, and other important information. It is convenient for the user to find the suitable lock body 1.

[0051] As described above, the quick installation type trailer ball cover lock, when in use, the ball head 6 is aligned with the ball cover connector 7 and pushed upward. In the pushing process, the edge 8 of the ball cover connector 7 will contact the stress surface 12 of the stop block 11 and generate a force, so that the stop block 11 moves.

[0052] When the edge 8 of the ball cover connector 7 passes through the stop block 11, the edge 8 is below the stop block 11, at this time, the stop block 11 is no longer subjected to the force, and the spring 13 drives the stop block 11 to rebound. The bottom of the rebounded stop block 11 will block above the edge 8 of the ball cover connector 7, preventing the lock body 1 from falling. In the case that the stop block 11 blocks the edge 8 of the ball cover connector 7 and the lock body 1 is stable, the lock rod 2 is inserted into the lock hole 3 on the lock body 1, the key is inserted into the lock cylinder 5, the key is twisted, the lock tongue enters into the corresponding lock slot 4, and the installation of the lock rod 2 and the lock body 1 is completed.

[0053] When disassembling the lock body 1, the key is inserted into the lock cylinder 5, and the key is twisted reversely to make the lock bolt exit from the lock slot 4 and release the locking state of the lock rod 2. After the lock bolt exits from the lock slot 4, the lock rod 2 is pulled out from the lock hole 3 of the lock body 1.

[0054] The blocking block 11 is operated by moving the dial block 18 or the connecting frame 19 to displace. After the blocking block 11 originally blocked above the edge 8 of the ball cover connector 7 is moved, the blocking to the edge 8 is released.

[0055] At this time, the lock body 1 can be disassembled from the ball cover connector 7, and the disassembly process of the lock body 1 is completed.

[0056] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A quick-install trailer ball cover lock, comprising a lock body (1), a ball head (6) provided on the lock body (1), a lock hole (3) for installing a lock rod (2) provided on the lock body (1), the lock rod (2) being installed in the lock hole (3), the lock body (1) and the lock rod (2) cooperating to lock the ball cover connector (7) installed on the ball head (6), characterized in that: The lock body (1) is provided with a mounting shell (10), a stop block (11) is movably mounted in the mounting shell (10), a spring (13) is arranged in the mounting shell (10) for providing elastic force to the stop block (11), and an inclined force receiving surface (12) is arranged at the end of the stop block (11); when a ball head (6) on the lock body (1) is mounted into a ball cover connector (7), the edge (8) of the ball cover connector (7) acts on the force receiving surface (12) of the stop block (11) to make the stop block (11) move, when the edge (8) of the ball cover connector (7) passes the stop block (11), the edge (8) of the ball cover connector (7) no longer exerts force on the stop block (11), the spring (13) drives the stop block (11) to rebound, and the rebounded stop block (11) blocks the edge (8) of the ball cover connector (7).

2. The quick install trailer ball cover lock of claim 1, wherein: The lock body (1) is provided with a lock cylinder (5) for locking a lock rod (2).

3. The quick install trailer ball cover lock of claim 2, wherein: The lock rod (2) is provided with lock grooves (4) with different heights.

4. The quick install trailer ball cover lock of claim 1, wherein: The stop block (11) is fixedly provided with a push block (18), and the mounting shell (10) is provided with a through groove (17) for the push block (18) to pass through.

5. The quick install trailer ball cover lock of claim 1, wherein: The mounting shell (10) can be displaced on the lock body (1) to switch the blocking state of the stop block (11) to the edge (8) of the ball cover connector (7).

6. The quick install trailer ball cover lock of claim 5, wherein: The mounting shell (10) is mounted with a connecting frame (19) for driving the mounting shell (10) to move, the lock body (1) is provided with a connecting piece (20), the connecting frame (19) penetrates the connecting piece (20), and the connecting frame (19) can move along the guide direction of the connecting piece (20).

7. The quick install trailer ball cover lock of claim 6, wherein: The connecting frame (19) is provided with a protruding driving block (21).

8. The quick install trailer ball cover lock of claim 1, wherein: The mounting shell (10) is provided with a connecting block (14) for fixing the end of the spring (13), and is provided with a connecting shaft (15), and the inside of the stop block (11) is provided with a sliding groove (16) matched with the connecting shaft (15).

9. The quick install trailer ball cover lock of claim 3, wherein: The lock rod (2) has a structure that one side is longer and the other side is shorter, the lock grooves (4) are arranged on the shorter side of the lock rod (2), and the longer side of the lock rod (2) is provided with a limiting block (9) at the bottom.

10. The quick install trailer ball cover lock of claim 9, wherein: The diameter of the limiting block (9) is greater than that of the lock hole (3).

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