CN213676273U

CN213676273U - Self-locking anti-loosening device for automobile traction

Info

Publication number: CN213676273U
Application number: CN202022156808.2U
Authority: CN
Inventors: 袁国基; 罗承康
Original assignee: Foshan Kinghorn Machinery Co ltd
Current assignee: Foshan Kinghorn Machinery Co ltd
Priority date: 2020-09-27
Filing date: 2020-09-27
Publication date: 2021-07-13
Anticipated expiration: 2030-09-27

Abstract

The utility model discloses an automobile traction self-locking anti-loosening device, which comprises a box body, a tightening component, an opening and closing component and a locking and limiting component; the clamping assembly comprises a fixed clamping block, a movable clamping block and a first pin shaft, the fixed clamping block is arranged in the box body, and the upper end of the movable clamping block is rotatably connected in the box body through the first pin shaft; the opening and closing assembly comprises a handle, a first supporting arm, a second pin, a third pin and a fourth pin, the front end of the handle is connected with the box body through the first pin, the first ends of the first supporting arm and the second supporting arm are connected with the front end of the handle through the second pin, the second end of the first supporting arm and the lower end of the movable clamping block are connected with the handle through the third pin, the second end of the second supporting arm is connected with the box body through the fourth pin, and the handle, the first supporting arm, the second supporting arm and the movable clamping block form a double-rocker mechanism; the locking limiting assembly locks the opening and closing assembly when the tightening assembly locks the trailer ball; compared with the prior art, the utility model is simple in operation and safe and reliable.

Description

Self-locking anti-loosening device for automobile traction

Technical Field

The utility model relates to an automobile traction technical field specifically, relates to an automobile traction auto-lock locking release.

Background

The existing square port for the traction connection of the automobile is generally fixed by a side bolt or a bolt additionally arranged at the bottom of the side bolt. When only the side bolt connection mode is adopted, the matching of the automobile traction square opening and the connecting piece is clearance matching with the minimum clearance larger than 0. The connecting piece connected with the automobile traction connecting square opening can generate shaking and abnormal sound in the automobile running process, and the using effect is reduced. The connection mode of the bottom locking bolt can cause the locking bolt to be loosened due to vibration in the running process of the automobile, the stability is poor, and the safety system is low. And a matched wrench is required to be prepared during assembling and disassembling, so that the operation is complicated.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to solve the problem that prior art exists, provide a car pulls auto-lock locking release.

The auto-drag auto-lock anti-loosening device comprises:

a box body;

the clamping assembly is used for locking the trailer ball and comprises a fixed clamping block, a movable clamping block and a first pin shaft, the fixed clamping block is arranged in the box body, and the upper end of the movable clamping block is rotatably connected in the box body through the first pin shaft;

the opening and closing assembly comprises a handle, a first supporting arm, a second pin shaft, a third pin shaft and a fourth pin shaft, wherein the front end of the handle is rotatably connected with the box body through the first pin shaft, the first ends of the first supporting arm and the second supporting arm are connected with the front end of the handle through the second pin shaft, the second end of the first supporting arm and the lower end of the movable clamping block are connected with the handle through the third pin shaft, the second end of the second supporting arm is rotatably connected with the box body through the fourth pin shaft, the handle, the first supporting arm, the second supporting arm and the movable clamping block form a double-rocker mechanism, the handle is moved upwards or downwards, and the movable clamping block is far away from or close to the fixed clamping block under the action of the first supporting arm and the second supporting arm;

and the locking limiting assembly is used for locking the opening and closing assembly when the fixed clamping block and the movable clamping block lock the trailer ball.

According to the utility model discloses an embodiment, first support arm is the U type, and in first support arm was arranged in to the second support arm, when the axis coincidence of first support arm and second support arm, decided the clamp splice and moved the clamp splice and lock trailer ball.

According to the utility model discloses an embodiment, the subassembly that opens and shuts still includes the extension spring that resets, and extension spring one end and box body fixed connection reset, the extension spring other end that resets and third round pin hub connection when deciding the clamp splice and moving the clamp splice and close separately, the extension spring that resets is in compression state.

According to the utility model discloses an embodiment, lock spacing subassembly including opening the shifting block, lock the stopper, spacing stay cord and locking spacing groove, open the shifting block and rotate to connect in the rear end of handle, first support arm is located to the locking stopper and its lower extreme runs through first support arm, the one end and the locking stopper upper end of spacing stay cord are connected, the other end is connected with the front end of opening the shifting block, the second support arm is located to the locking spacing groove, when deciding the clamp splice and moving the clamp splice when being in the same place, the lower extreme of locking stopper is arranged in and is locked the spacing inslot and spacing to the second support arm, when opening the shifting block to stirring, open the spacing stay cord of shifting block pulling and make the locking stopper leave the locking spacing groove.

According to the utility model discloses an embodiment still includes the safety lock, and it locates the handle, acts on when the safety lock and opens the shifting block, opens the shifting block and is locked by the safety lock.

According to the utility model discloses an embodiment still includes fine setting structure, and fine setting structure includes adjustment tank, adjustment hole and adjusting bolt, and the box body is located along the width direction of box body in the adjustment tank, the both ends sliding connection of fourth round pin axle in adjustment tank, the adjustment hole locate the second support arm and with the second support arm on the through-hole intercommunication of installation fourth round pin axle, adjusting bolt locates the box body, the adjusting bolt front end stretches into the adjustment hole and acts on fourth round pin axle.

According to the utility model discloses an embodiment is equipped with two at least back shafts on the handle, and spacing stay cord sliding connection is on the back shaft.

According to the utility model discloses an embodiment, decide the clamp splice and be connected with the box body through deciding clamp splice mounting structure, decide clamp splice mounting structure and include fifth round pin axle, definite groove and definite axle, decide the upper end of clamp splice and be connected with the box body through fifth round pin axle, the definite groove is located the both sides of deciding the clamp splice and is followed the width direction setting of deciding the clamp splice, and box body and sliding connection in definite groove are located to the definite axle.

According to the utility model discloses an embodiment, the subassembly that opens and shuts still includes the shock attenuation piece, and the shock attenuation piece is located the box body and is decided between the clamp splice.

According to the utility model discloses an embodiment is equipped with the shock attenuation spacing groove on deciding the clamp splice, and the shock attenuation spacing inslot is arranged in to the damping piece.

Compared with the prior art, the utility model discloses a car pulls auto-lock locking release has following advantage:

1. the utility model discloses a car pulls auto-lock locking release, handle, first support arm, second support arm and move the clamp splice and constitute a two rocker mechanism, have utilized two rocker mechanism's lever principle, make the connection of trailer ball and dismantle easy operation.

2. The utility model discloses a car pulls auto-lock locking take-off, when deciding the clamp splice and moving the clamp splice with trailer ball locking, the subassembly that opens and shuts is locked to the spacing subassembly of locking, arouses when can avoiding opening and shutting the subassembly maloperation to move the clamp splice and decide the clamp splice separation, and trailer ball takes off safe and reliable from deciding the clamp splice and moving between the clamp splice.

Drawings

FIG. 1 is a schematic structural view of the traction self-locking anti-loosening device of an automobile of the present invention;

FIG. 2 is a schematic structural view of the other direction of the traction self-locking anti-loosening device of the present invention;

FIG. 3 is a schematic view of the structure of FIG. 2 with the cassette removed;

FIG. 4 is a cross-sectional view of FIG. 1;

FIG. 5 is a simplified schematic diagram of the dual rocker mechanism formed by the handle, the first support arm, the second support arm, and the movable clamp block of FIG. 4;

FIG. 6 is a cross-sectional view of the hitch ball locked by the clamping assembly;

FIG. 7 is a simplified schematic diagram of the dual rocker mechanism formed by the handle, the first support arm, the second support arm, and the movable clamp block of FIG. 5;

in the figure: 1. the locking device comprises a box body, 2, a clamping assembly, 21, a fixed clamping block, 211, a damping limiting groove, 22, a movable clamping block, 23, a first pin shaft, 24, a fixed clamping block mounting structure, 241, a fifth pin shaft, 242, a limiting groove, 243, a limiting shaft, 25, a damping piece, 3, an opening and closing assembly, 31, a handle, 311, a supporting shaft, 32, a first supporting arm, 33, a second supporting arm, 34, a second pin shaft, 35, a third pin shaft, 36, a fourth pin shaft, 37, a reset tension spring, 4, a locking limiting assembly, 41, an opening shifting block, 42, a locking limiter, 43, a limiting pull rope, 44, a locking limiting groove, 5, 6, a fine adjustment structure, 61, an adjustment groove, 62, an adjustment hole, 63, an adjustment bolt

The utility model discloses realization and the advantage of function will combine the embodiment, will make further explanation with the attached drawing.

Detailed Description

In the following description, numerous implementation details are set forth in order to provide a more thorough understanding of the present invention. It should be understood, however, that these implementation details should not be used to limit the invention. That is, in some embodiments of the invention, details of these implementations are not necessary. In addition, some conventional structures and components are shown in simplified schematic form in the drawings.

It should be noted that all the directional indicators (such as upper, lower, left and right, front and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is changed accordingly.

In addition, the descriptions related to "first", "second", etc. in the present invention are only for description purposes, not specifically referring to the order or sequence, and are not intended to limit the present invention, but only to distinguish the components or operations described in the same technical terms, and are not to be construed as indicating or implying any relative importance or implicit indication of the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.

For further understanding of the contents, features and effects of the present invention, the following embodiments are exemplified in conjunction with the accompanying drawings as follows:

referring to fig. 1 to 4, fig. 1 is a schematic structural view of the traction self-locking anti-release device of the present embodiment; FIG. 2 is a schematic structural view of the traction self-locking anti-release device of the present embodiment in another direction; FIG. 3 is a schematic view of the structure of FIG. 2 with the cassette removed; fig. 4 is a cross-sectional view of fig. 1. As shown in the figure, the automobile traction self-locking anti-loosening device comprises a box body 1, a clamping assembly 2, an opening and closing assembly 3 and a locking and limiting assembly 4; the clamping assembly 2 is used for locking the trailer ball, the opening and closing assembly 3 is used for opening the clamping assembly 2, and the locking limiting assembly 4 is used for locking the opening and closing assembly when the fixed clamping block 21 and the movable clamping block 22 lock the trailer ball.

Referring to fig. 3 and 4 again, as shown in the drawings, the clamping assembly 2 includes a fixed clamping block 21, a movable clamping block 22, a first pin 23 and a fixed clamping block mounting structure 24, the fixed clamping block 21 is disposed in the box body 1, the fixed clamping block 21 is connected to the box body 1 through the fixed clamping block mounting structure 24, the fixed clamping block mounting structure 24 includes a fifth pin 241, a limiting groove 242 and a limiting shaft 243, the upper end of the fixed clamping block 21 is connected to the box body 1 through the fifth pin 241, the limiting groove 242 is disposed on two sides of the fixed clamping block 21 and is arranged along the width direction of the fixed clamping block 21, and the limiting shaft 243 is disposed on the box body 1 and is slidably connected to the limiting groove 242; the upper end of the movable clamping block 22 is rotatably connected into the box body 1 through a first pin shaft 23, the fixed clamping block 21 and the movable clamping block 22 are both provided with a hemispherical groove, and when the fixed clamping block 21 and the movable clamping block 22 are combined together, a spherical groove capable of locking a trailer ball is formed.

Referring to fig. 4 again, as shown in the figure, the opening and closing assembly further includes a damping member 25, a damping limiting groove 211 is formed in the fixed clamping block 21, and the damping member 25 is disposed in the damping limiting groove 211 and located between the box body 1 and the fixed clamping block 21, so that the trailer ball is prevented from loosening due to failure of the clamping assembly 2 caused by vibration during the driving process of the automobile.

Referring to fig. 4 and 6, as shown in the figures, the opening and closing assembly 3 includes a handle 31, a first support arm 32, a second support arm 33, a second pin 34, a third pin 35 and a fourth pin 36, the front end of the handle 31 is rotatably connected to the box body 1 through the first pin 23, the first ends of the first support arm 32 and the second support arm 33 are connected to the front end of the handle 31 through the second pin 34, the second end of the first support arm 32 and the lower end of the movable clamping block 22 are connected to the handle 31 through the third pin 35, the second end of the second support arm 33 is rotatably connected to the box body 1 through the fourth pin 36, the first pin shaft 23 is positioned above the third pin shaft 35 and the fourth pin shaft 36, the distance from the third pin shaft 35 to the fixed clamping block 21 is less than the distance from the fourth pin shaft 36 to the fixed clamping block 21, and the handle 31, the first support arm 32, the second support arm 33 and the movable clamping block 22 form a double-rocker mechanism; referring to fig. 5 and 7 again, as shown in the figure, the rotational connection point of the first pin 23 and the handle 31 with the movable clamping block 22 is set as a, the connection point of the fourth pin 36 and the second end of the second support arm 33 with the box body 1 is set as b, the connection point of the third pin 35 and the second end of the first support arm 32 with the lower end of the movable clamping block 22 is set as d, and the rotational connection point of the second pin 34 and the first support arm 32 with the second support arm 33 is set as c, so that the dual-rocker mechanism formed by the handle 31, the first support arm 32, the second support arm 33 and the movable clamping block 22 uses the connection line between ab as the frame, the connection line between bc and the connection line between ad as the rocker, and the connection line between cd as the connecting rod; when the tightening component 2 locks the trailer ball, the handle 31 is moved upwards, according to the movement rule of the double-rocker mechanism, the connecting line of bc rotates clockwise with the point b as a rotation point, the connecting line of ad rotates counterclockwise with the point a as a rotation point, finally the first end of the first supporting arm 32 rotates counterclockwise around the point c, the second end of the second supporting arm 33 rotates clockwise around the point b, the movable clamping block 22 is far away from the fixed clamping block 21 under the action of the first supporting arm 32 and the second supporting arm 33, and the trailer ball can be separated from the space between the fixed clamping block 21 and the movable clamping block 22; when the locking of the trailer ball is needed again, the handle 31 is swung downwards, the movable clamping block 22 approaches to the fixed clamping block 21, and the trailer ball is locked.

Referring to fig. 2 and 3, in the present embodiment, the first support arm 32 is U-shaped, and the second support arm 33 is disposed in the first support arm 32, when the axes of the first support arm 32 and the second support arm 33 are coincident, the fixed clamping block 21 and the movable clamping block 22 lock the trailer ball, so that the structure of the fastening assembly 2 is stable when the trailer ball is locked.

Referring to fig. 4 and 6, as shown in the figure, the opening and closing assembly 3 further includes a return tension spring 37, one end of the return tension spring 37 is fixedly connected to the box body 1, the other end of the return tension spring 37 is connected to the third pin shaft 35, and when the fixed clamping block 21 and the movable clamping block 22 are separated, the return tension spring 25 is in a compressed state; the existence of extension spring 25 resets makes and need hard just can accomplish when opening and clamping subassembly 2, can avoid the maloperation to arouse clamping subassembly 2 to loosen the trailer ball.

Referring to fig. 4 and 6 again, as shown in the figure, in the present embodiment, the locking limiting component 4 includes an opening shifting block 41, a locking limiter 42, a limiting pull rope 43 and a locking limiting groove 44, the opening shifting block 41 is rotatably connected to the rear end of the handle 31, the locking limiter 42 is disposed on the first support arm 32, and the lower end of the locking limiter passes through the first support arm 32, one end of the limiting pull rope 43 is connected to the upper end of the locking limiter 42, the other end is connected to the front end of the opening shifting block 41, the locking limiting groove 44 is disposed on the second support arm 33, when the fixed clamping block 21 and the movable clamping block 22 are combined together, the lower end of the locking limiter 42 is disposed in the locking limiting groove 44 and limits the second support arm 33, at this time, the opening and closing component 3 fails, and the movable clamping block 22 of the clamping component 2 cannot be separated from the movable clamping block 21 by moving the handle 31 upward, so that an erroneous operation can be placed; when the trailer ball needs to be separated from the clamping assembly 2, and the opening shifting block 41 is shifted, the opening shifting block 41 pulls the limiting pull rope 43 and enables the locking limiting stopper 42 to leave the locking limiting groove 44, at the moment, the handle 31 is moved upwards, the movable clamping block 22 is far away from the fixed clamping block 21 under the action of the first supporting arm 32 and the second supporting arm 33, and the trailer ball is separated from the space between the fixed clamping block 21 and the movable clamping block 22.

Referring to fig. 4 and 6, in the present embodiment, at least two support shafts 311 are disposed on the handle 31, the position-limiting pulling rope 43 is slidably connected to the support shafts 311, and the support shafts 311 support the position-limiting pulling rope 43 and enable the position-limiting pulling rope 43 to slide more smoothly.

Referring to fig. 4 and 6, as shown in the drawings, the traction self-locking anti-loosening device for automobiles further includes a safety lock 5 disposed on the handle 31, and when the safety lock 5 acts on the unlocking shifting block 41, the unlocking shifting block 41 is locked by the safety lock 5. The locking limit assembly 4 can only initiate the unlocking action of the opening and closing assembly 3 when the safety lock is opened.

Referring to fig. 1 to 3 again, as shown in the figure, the automobile traction self-locking anti-loosening device further includes a fine adjustment structure 6, the fine adjustment structure 6 includes an adjustment groove 61, an adjustment hole 62 and an adjustment bolt 63, the adjustment groove 61 is disposed in the box body 1 along the width direction of the box body 1, two ends of the fourth pin shaft 36 are slidably connected to the adjustment groove 61, the adjustment hole 62 is disposed in the second support arm 33 and is communicated with a through hole of the second support arm 33 on which the fourth pin shaft 36 is mounted, the adjustment bolt 63 is disposed in the box body 1, and the front end of the adjustment bolt 63 extends into the adjustment hole 62 and acts on the fourth pin shaft 36; the fine adjustment structure 6 adjusts the position of the second supporting arm 33 by adjusting the position of the fourth pin shaft 36 in the adjusting groove 61, and then adjusts the swing angle of the movable clamping block 22 when approaching to the fixed clamping block 21, so that the tightening force of the tightening component 2 to the trailer ball can be finely adjusted.

The above description is only exemplary of the present invention and should not be construed as limiting the present invention, and any modification, equivalent replacement or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides an auto traction auto-lock anti-loosening device which characterized in that includes:

a box body (1);

the clamping assembly (2) is used for locking the trailer ball and comprises a fixed clamping block (21), a movable clamping block (22) and a first pin shaft (23), the fixed clamping block (21) is arranged in the box body (1), and the upper end of the movable clamping block (22) is rotatably connected into the box body (1) through the first pin shaft (23);

the opening and closing assembly (3) comprises a handle (31), a first supporting arm (32), a second supporting arm (33), a second pin shaft (34), a third pin shaft (35) and a fourth pin shaft (36), wherein the front end of the handle (31) is rotatably connected with the box body (1) through a first pin shaft (23), the first ends of the first supporting arm (32) and the second supporting arm (33) are connected with the front end of the handle (31) through the second pin shaft (34), the second end of the first supporting arm (32) and the lower end of the movable clamping block (22) are connected with the handle (31) through the third pin shaft (35), the second end of the second supporting arm (33) is rotatably connected with the box body (1) through the fourth pin shaft (36), and the handle (31), the first supporting arm (32), the second supporting arm (33) and the movable clamping block (22) form a double-rocker mechanism, the handle (31) is moved upwards or downwards, and the movable clamping block (22) is far away from or close to the fixed clamping block (21) under the action of the first supporting arm (32) and the second supporting arm (33);

and the locking and limiting assembly (4) is used for locking the opening and closing assembly when the fixed clamping block (21) and the movable clamping block (22) lock the trailer ball.

2. The traction self-locking anti-loosening device for the automobile according to claim 1, is characterized in that: the first supporting arm (32) is U-shaped, the second supporting arm (33) is arranged in the first supporting arm (32), and when the axes of the first supporting arm (32) and the second supporting arm (33) are overlapped, the fixed clamping block (21) and the movable clamping block (22) lock the trailer ball.

3. The traction self-locking anti-loosening device for the automobile according to claim 1, is characterized in that: the opening and closing assembly (3) further comprises a reset tension spring (37), one end of the reset tension spring (37) is fixedly connected with the box body (1), the other end of the reset tension spring (37) is connected with the third pin shaft (35), and when the fixed clamping block (21) and the movable clamping block (22) are separated, the reset tension spring (37) is in a compression state.

4. The traction self-locking anti-loosening device for the automobile according to claim 1, is characterized in that: the locking limiting assembly (4) comprises an opening shifting block (41), a locking limiter (42), a limiting pull rope (43) and a locking limiting groove (44), the opening shifting block (41) is rotatably connected to the rear end of the handle (31), the locking limiter (42) is arranged on the first support arm (32) and the lower end of the first support arm (32) penetrates through the first support arm (32), one end of the limiting pull rope (43) is connected with the upper end of the locking limiter (42), the other end of the limiting pull rope is connected with the front end of the opening shifting block (41), the locking limiting groove (44) is arranged on the second support arm (33), when the fixed clamping block (21) and the movable clamping block (22) are combined together, the lower end of the locking limiter (42) is arranged in the locking limiting groove (44) and limits the second support arm (33), when the shifting block (41) is opened, the opening shifting block (41) pulls the limit pull rope (43) and enables the locking limiter (42) to leave the locking limit groove (44).

5. The traction self-locking anti-loosening device for the automobile according to claim 4, is characterized in that: the handle is characterized by further comprising a safety lock (5) arranged on the handle (31), and when the safety lock (5) acts on the opening shifting block (41), the opening shifting block (41) is locked by the safety lock (5).

6. The traction self-locking anti-loosening device for the automobile according to claim 1, is characterized in that: still include fine setting structure (6), fine setting structure (6) are including adjustment tank (61), adjustment hole (62) and adjusting bolt (63), adjustment tank (61) are followed the width direction of box body (1) is located box body (1), the both ends sliding connection of fourth round pin axle (36) in adjustment tank (61), adjustment hole (62) are located second support arm (33) and with install on second support arm (33) the through-hole intercommunication of fourth round pin axle (36), adjusting bolt (63) are located box body (1), adjusting bolt (63) front end stretches into adjustment hole (62) and act on fourth round pin axle (36).

7. The traction self-locking anti-loosening device for the automobile according to claim 4, is characterized in that: the handle (31) is provided with at least two support shafts (311), and the limiting pull rope (43) is connected to the support shafts (311) in a sliding mode.

8. The traction self-locking anti-loosening device for the automobile according to claim 1, is characterized in that: decide clamp splice (21) through decide clamp splice mounting structure (24) with box body (1) is connected, decide clamp splice mounting structure (24) including fifth round pin axle (241), limited groove (242) and limited axle (243), the upper end of deciding clamp splice (21) is passed through fifth round pin axle (241) with box body (1) is connected, limited groove (242) are located decide the both sides of clamp splice (21) and follow the width direction of deciding clamp splice (21) sets up, limited axle (243) are located box body (1) and sliding connection in limited groove (242).

9. The traction self-locking anti-loosening device for the automobile according to claim 1, is characterized in that: the clamping assembly (2) further comprises a damping piece (25), and the damping piece (25) is arranged between the box body (1) and the fixed clamping block (21).

10. The traction self-locking anti-loosening device for the automobile according to claim 9, is characterized in that: the fixed clamping block (21) is provided with a damping limiting groove (211), and the damping piece (25) is arranged in the damping limiting groove (211).