CN218661189U - Trailer square hole expanding support - Google Patents

Abstract

The utility model provides a trailer square hole expanding bracket, belonging to the technical field of automobile expanding brackets, wherein the expanding bracket is provided with a cantilever which is provided with a first inclined plane; a movable arm: the movable arm is provided with a second inclined surface which is contacted with the first inclined surface; a jacking component: and the cantilever and the movable arm are moved along the direction of the first inclined surface or the second inclined surface by applying force to the cantilever and/or the movable arm, so that clamping force is generated to clamp in the connecting hole of the trailer. The utility model has the advantages that: the jacking component is used for drawing the movable arm to be close to the cantilever, and the movable arm and the cantilever are staggered through mutual extrusion of the first inclined plane and the second inclined plane, so that the movable arm and the cantilever are tightly jacked on the inner wall of the connecting hole, the stability of installation of the expansion support in the connecting hole is improved, abnormal sound or shaking of the expansion support in the driving process is avoided, the vehicle is prevented from being scratched, and the vehicle is protected.

Description

Trailer square hole expanding support

Technical Field

The utility model belongs to car expansion support art field, concretely relates to support is extended to trailer square hole.

Background

Various connecting holes for trailers or mounting additional parts are formed in the vehicle frame on the market at present, and according to language habits of various regions, some trailer balls, some small trailer hooks, some trailer bars, some towing bars and some trailer square holes are formed.

Wherein, the connecting hole has multiple use, can be when the vehicle is sunk, be used for towing vehicle, also can be used for installing the cantilever for the vehicle carries the spare tyre, compares in former car spare tyre direct mount on the tail-gate, uses the cantilever to install in the connecting hole, fixes the spare tyre on the frame, can further reduce the spare tyre and install on the tail-gate for a long time, only leans on the hinge bearing of tail-gate, the problem of the hinge deformation that leads to.

But in-process of in-service use, cantilever and square hole are connected and still have the problem of making the car owner bothersome, that is to have the clearance between cantilever and the square hole, the connected mode of cantilever and square hole also only uses the pin bolt to fix, so just also lead to the stability of being connected between cantilever and the square hole not enough, at the driving in-process, abnormal sound appears easily between cantilever and the square hole, or because of the cantilever is unstable, lead to spare tyre or the problem of the easy wearing and tearing automobile body of cantilever, of course last rocking between cantilever and the square hole, the possibility that the bolt is not hard up also can appear.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a support is extended to trailer square hole aims at solving the current not good problem of expanding the support mounting in trailer square hole stability.

In order to achieve the above object, the utility model provides a following technical scheme: a trailer square hole expanding bracket is provided with a cantilever, wherein the cantilever is provided with a first inclined surface;

a movable arm: the movable arm is provided with a second inclined surface which is contacted with the first inclined surface;

a jacking component: the cantilever and the movable arm move along the direction of the first inclined surface or the second inclined surface by applying force on the cantilever and/or the movable arm, so that the cantilever and the movable arm are tightly propped against the inner wall of the connecting hole and generate clamping force to be clamped in the connecting hole of the trailer.

Specifically, the tightening part is a bolt.

In order to realize mutual extrusion of the movable arm and the end part of the cantilever and maintain the pre-tightening force of the extrusion, the cantilever is hollow, a first supporting plate is fixedly arranged in the cantilever, a long hole is formed in the first supporting plate, the bolt is installed in the long hole, and the other end of the bolt is connected to the movable arm.

In order to reduce the weight of the movable arm, save raw materials and reduce the cost, the movable arm is hollow, a second supporting plate is fixedly arranged in the movable arm, and a hole for a bolt to penetrate through is formed in the second supporting plate.

Specifically, the hole in the second support plate is a circular hole, and an internal thread capable of being matched with the bolt is arranged on the inner wall of the circular hole in the second support plate.

Preferably, one end of the bolt is provided with a nut, and the nut can abut against one side of the second support plate.

In order to facilitate welding of the first support plate and the second support plate, positioning grooves are formed in the movable arm and the cantilever, positioning blocks are arranged on the first support plate and the second support plate, and the positioning blocks can be inserted into the corresponding positioning grooves.

In order to increase the connection strength of the trailer frame and the connecting hole, a first jack communicated with the connecting hole is arranged on the trailer, a second jack is arranged on the cantilever, and a connector can be inserted into the first jack and the second jack and used for fixing the cantilever in the connecting hole.

In order to avoid inconvenience caused by the fact that the connecting hole is occupied, the expanding support is provided with an expanding pipe fitting, the expanding pipe fitting is provided with a fixing hole, the expanding pipe fitting is also provided with an expanding hole, and the expanding pipe fitting is provided with a fastener for fixing a structure to be installed.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the pushing component is used for pulling the movable arm to approach the cantilever, and the movable arm and the cantilever are dislocated through mutual extrusion of the first inclined surface and the second inclined surface, so that the movable arm and the cantilever are pushed tightly against the inner wall of the connecting hole, the stability of the installation of the expansion bracket in the connecting hole is improved, the condition that the vehicle is scratched due to abnormal sound or the expansion bracket shakes in the driving process is avoided, and the vehicle is protected;

2. the spare tire uses this expansion support to install in the connecting hole on the frame for the weight of spare tire is used on the frame, and the weight that can effectual reduction vehicle back tail door bore prevents that the vehicle from going to jolt, leads to the back tail door not hard up, thereby reduces the probability that back tail door damaged, improves the stability of spare tire installation.

3. The expansion hole can be used for expanding a connecting hole for the vehicle again when the connecting hole is occupied, so that the vehicle can be used normally, the connecting hole is prevented from being occupied, the vehicle is not convenient to use, and convenience is brought to normal use of the vehicle.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 is a left perspective view of a specific embodiment of the present invention;

fig. 2 is a right perspective view of a specific embodiment of the present invention;

fig. 3 is a schematic front view of the embodiment of the present invention;

fig. 4 is a rear-view exploded schematic diagram of an embodiment of the present invention;

fig. 5 is a schematic view of a first embodiment of the present invention;

fig. 6 is a schematic view of a second embodiment of the present invention;

fig. 7 is a schematic view of a second supporting plate according to a second embodiment of the present invention;

fig. 8 is a large enlarged view of a portion a in fig. 6 according to an embodiment of the present invention;

fig. 9 is a schematic view of a third embodiment of the present invention.

In the figure: 1. connecting holes; 11. a first jack; 2. expanding a bracket; 21. a cantilever; 211 a second jack; 22. a first inclined plane; 23. a first support plate; 231. a long hole; 3. a movable arm; 31. a second inclined plane; 32. a second support plate; 321. an internal thread; 4. a tightening member; 41. a bolt; 41a, a void; 42. a nut; 51. positioning a groove; 52. positioning blocks; 6. a plug-in; 7. expanding the pipe fittings; 71. a fixing hole; 72. expanding holes; 73. a fastener.

Detailed Description

In order to avoid expanding the cantilever 21 of support 2 in inserting connecting hole 1, also be in the square hole of trailer, because there is the clearance volume between cantilever 21 and the square hole, and lead to cantilever 21 to shake in connecting hole 1, lead to expanding support 2 and appear rocking and unstable, or produce abnormal sound, or wear and tear the automobile body scheduling problem.

Referring to fig. 1-4, the present invention provides the following technical solutions: a trailer square hole expanding bracket is suitable for being installed in a connecting hole 1 of a trailer, the connecting hole 1 is installed at the tail of an automobile, and a first insertion hole 11 communicated with the connecting hole 1 is formed in the trailer; wherein: the connecting hole 1 comprises but is not limited to a square hole of the trailer, and can also be a connecting hole 1 such as a round hole and the like suitable for installing a connecting piece;

expanding the support 2: the square cantilever 21 is connected with the square connecting hole 1, the end part of the cantilever 21 is provided with a first inclined surface 22, and it is emphasized that the first inclined surface 22 can also be arranged on the side wall of the cantilever 21; the side wall of the cantilever 21 is provided with a second jack 211, and after a part of the cantilever 21 is inserted into the connecting hole 1, the positions of the second jack 211 and the first jack 11 can correspond to each other, so that a plug-in unit 6 is inserted into the first jack 11 and the second jack 211; in this embodiment, the first insertion hole 11 and the second insertion hole 211 have the same shape, and the cross section thereof may be circular, oval, square, or the like, and the plug 6 has a shape suitable for being inserted into and pulled out from the second insertion hole 211 and the first insertion hole 11.

The movable arm 3: the movable arm 3 has a second inclined surface 31, the second inclined surface 31 is arranged at the end of the movable arm 3 close to the end of the cantilever 21, and it is emphasized that: the second inclined surface 31 may also be provided on the side wall of the movable arm 3; the second inclined surface 31 can be in contact with the first inclined surface 22 on the cantilever 21, and the shapes of the cantilever 21 and the movable arm 3 are both matched with the shape of the connecting hole 1, so that the cantilever 21 and the movable arm 3 can be inserted into the connecting hole 1;

the tightening member 4: and is mounted on the cantilever arm 21 and/or the movable arm 3, and the cantilever arm 21 and the movable arm 3 are moved along the extending direction of the first inclined surface 22 or the second inclined surface 31 by applying force on the cantilever arm 21 and/or the movable arm 3, so that clamping force is generated to be clamped in the connecting hole 1 of the trailer.

When the cantilever 21 is installed, the cantilever 21 and the movable arm 3 are inserted into the connecting hole 1 together, and the movable arm 3 is deep in the connecting hole 1, and the cantilever 21 on the bracket 2 is extended to the outer position, that is, the movable wall 3 is deeper than the position where the cantilever 21 is inserted into the connecting hole 1, and then the pushing component 4 is used to apply a pressing force to the cantilever 21 and the movable arm 3, under the action of the pressing force, the end of the cantilever 21 and the movable arm 3 approach each other, and the first inclined surface 22 and the second inclined surface 31 press each other, and due to the guiding action of the first inclined surface 22 and the second inclined surface 31, the end of the movable arm 3 and the cantilever 21 are dislocated along the extending direction of the first inclined surface 22 or the second inclined surface 31, so that the movable wall 31 and the cantilever 21 abut against each other on two opposite side walls of the connecting hole 1, for example: the upper surface of the movable wall 31 is abutted against the top wall of the connecting hole 1, and the lower surface of the cantilever 21 is abutted against the bottom wall of the connecting hole 1; it can be appreciated that the movable wall 31 and the cantilever 21 can also abut against the front and rear side walls of the connecting hole 1;

along with the gradual increase of the extrusion force acting on the movable arm 3 and the cantilever 21, the extrusion force between the first inclined surface 22 and the second inclined surface 31 is gradually increased, the larger the pressure between the cantilever 21 and the inner wall of the connecting hole 1 is, the more compact the cantilever 21 and the movable arm 3 are in contact with the inner wall of the connecting hole 1, the gap between the cantilever 21 and the inner wall of the connecting hole 1 is eliminated, the better the stability of the cantilever 21 in the connecting hole 1 is, the mounting stability of the cantilever 21 can be effectively improved, and further, the gap between the cantilever 21 and the connecting hole 1 is avoided, so that the situation that the cantilever 21 shakes, vibrates or makes abnormal sound in the driving process of the vehicle, and even the vehicle body is abraded is avoided;

after the movable arm 3 and the cantilever 21 are tightly pressed against each other and have a predetermined pre-tightening force, the plug-in unit 6 is inserted into the first insertion hole 11 and the second insertion hole 211 to fix the expanding bracket 2, and it should be specially explained that the plug-in unit 6 includes, but is not limited to, a bolt column, a pin, a bolt, and the like.

Referring to fig. 3-8, the tightening member 4 includes but is not limited to a bolt 41, and may be a telescopic rod, a buckle, an inclined surface for preventing the cantilever 21 from withdrawing from the connecting hole 1, and the like, for maintaining the pressing force between the cantilever 21 and the movable arm 3; when the bolt 41 is used as the tightening part 4, the bolt 41 is in threaded connection with the movable arm 3 and/or the cantilever 21, the bolt 41 is rotated to rotate on the movable arm 3 and/or the cantilever 21, and the movable arm 3 and/or the cantilever 21 cannot rotate along with the bolt 41 under the limitation of the connecting hole 1, namely a trailer square hole, so that the cantilever 21 and the movable arm 3 are forced and pulled to be close to each other to extrude the first inclined surface 22 and the second inclined surface 31, and finally the function of clamping the cantilever 21 and the movable arm 3 in the connecting hole 1 is realized, and the stability of expanding the installation of the bracket 2 is improved.

For realizing mutual extrusion of movable arm 3 and cantilever 21 tip and maintain this extruded pretightning force, the utility model discloses the first embodiment of well top tight part 4: referring to fig. 5, the suspension arm 21 is hollow, the first support plate 23 is fixedly disposed therein, the first support plate 23 is provided with a long hole 231, in this embodiment, the movable arm 3 includes but is not limited to be solid, the movable arm 3 is provided with a threaded hole, one end of the bolt 41 is mounted in the long hole 231, at this time, a gap 41a is provided between the bolt 41 and the end of the long hole 231, the other end of the bolt 41 is screwed into the threaded hole of the movable arm 3, and the gap 41a between the long hole 231 and the bolt 41 can provide a space for the movement of the bolt 41 when the movable arm 3 and the suspension arm 21 are misaligned, so as to avoid that the long hole 231 and the threaded hole on the movable arm 3 are coaxial, and the misaligned movement cannot be realized under the support of the bolt 41;

when the device is used, the bolt 41 penetrates out of the long hole 231 on the first support plate 23 and is in threaded connection with the movable arm 3, the bolt 41 is rotated in the threaded hole to draw the movable arm 3 towards the direction of the cantilever 21, the first inclined surface 22 and the second inclined surface 31 are mutually extruded along with the gradual screwing of the bolt 41, finally, the dislocation between the edges of the movable arm 3 and the cantilever 21 is gradually increased under the guidance of the first inclined surface 22 and the movable arm and the cantilever 21 are also gradually pressed against the inner wall of the connecting hole 1, so that the function of increasing the installation stability of the cantilever 21 is realized; in this embodiment, the structure of the movable arm 3 for connecting the bolt 41 may also be a through hole, and when the movable arm 3 is pushed to the direction of the cantilever 21, a nut or a nut may be used to screw the bolt 41 on the end of the movable arm 3 away from the cantilever 21, so as to push the movable arm 3 to the direction of the cantilever 21.

In order to reduce the weight and save the material, the utility model discloses a second embodiment of the jacking component 4; referring to fig. 6-8, the movable arm 3 is also hollow, and a second supporting plate 32 is connected inside the hollow, the second supporting plate 32 has a circular hole for the bolt 41 to pass through, and the inner wall of the circular hole is provided with an internal thread 321;

when the bolt 41 is rotated, the movable arm 3 is pulled by the second support button 32, so that the first inclined surface 22 and the second inclined surface 31 are pressed against each other, and the pushing operation of the movable arm 3, the cantilever 21 and the inner wall of the connecting hole 1 is completed.

In order to reduce the difficulty of manufacturing and processing the movable arm 3, the utility model discloses a third embodiment of a middle jacking component 4; referring to fig. 6-8, the hole of the second support plate 32 includes, but is not limited to, a round hole, a long hole, etc., and in this embodiment, the inner wall of the hole of the second support plate 32 is smooth, and one end of the bolt 41 is provided with a nut 42, and the nut 42 can abut against the side of the second support plate 32 away from the first support plate 23;

in use, the nut 42 is matched with the bolt 41 to clamp the first support plate 23 and the second support plate 32, so that the cantilever 21 and the movable arm 3 are pulled, and the cantilever 21 is clamped in the connecting hole 1 through the first inclined surface 22 and the second inclined surface 31.

Wherein, first backup pad 23 welds in cantilever 21, second backup pad 32 welds in movable arm 3, be equipped with constant head tank 51 on movable arm 3 and the cantilever 21 respectively, all be equipped with on first backup pad 23 and the second backup pad 32 with constant head tank 51 complex locating piece 52, constant head tank 51 and locating piece 52's use, can be for the welding of first backup pad 23 and second backup pad 32, play good locate function, guarantee the accuracy of first backup pad 23 and second backup pad 32 position, so can effectual reduction movable arm 3 make the use amount of material in the course of working, can also effectual reduction movable arm 3's weight, more importantly, can effectual reduction movable arm 3's the manufacturing and processing degree of difficulty, batch production for movable arm 3 provides the advantage.

The expanding bracket 2 is provided with an expanding pipe fitting 7, the expanding pipe fitting 7 is provided with a fixing hole 71, the expanding pipe fitting 7 is also provided with an expanding hole 72, and the expanding hole 72 is provided with a fastener 73 for fixing a structure to be installed;

when using, in cantilever 21 inserts connecting hole 1 on the car, occupy connecting hole 1, at this moment, expand the hole 72 of expanding on the support 2, can set for various sizes and shapes, for example square, circular, oval etc. enough provide the connection position for the normal use of trailer, avoid because of the connecting hole 1 on the trailer is occupied and lead to the use inconvenient, and fixed orifices 71 can play the fixed action to inserting the structure of expanding in the hole 72, so that play the fixed action to inserting the part of expanding the hole.

The utility model discloses only take the installation of trailer expansion bracket 2 as an example, thereby fully disclose the specific structure and function of the utility model, when in actual use, the structure application range of this expansion bracket 2 is not limited to spare tyre installation technical field, can also be used in the connection structure of various hole pieces to increase the stability of connection; in addition, in the actual use process, the movable arm 3 can be selectively and fixedly arranged in the connecting hole 1 so as to meet the actual use requirement.

Claims (9)

1. The utility model provides a support is extended to trailer square hole is applicable to and installs in connecting hole (1) of trailer, its characterized in that:

the expansion bracket (2) is provided with a cantilever (21), and the cantilever (21) is provided with a first inclined surface (22);

movable arm (3): the movable arm (3) is provided with a second inclined surface (31) contacted with the first inclined surface (22);

tightening member (4): the clamping device is arranged on the cantilever (21) and/or the movable arm (3), and the cantilever (21) and the movable arm (3) are moved along the direction of the first inclined surface (22) or the second inclined surface (31) by applying force on the cantilever (21) and/or the movable arm (3), so that clamping force is generated in the connecting hole (1) to clamp in the connecting hole (1) of the trailer.

2. The square hole expanding bracket for the trailer according to claim 1, wherein: the tightening component (4) is a bolt (41).

3. The square hole expanding bracket for the trailer according to claim 2, wherein: the cantilever (21) is hollow, a first supporting plate (23) is fixedly arranged in the cantilever, a long hole (231) is formed in the first supporting plate (23), the bolt (41) is installed in the long hole (231), and the other end of the bolt is connected to the movable arm (3).

4. The square hole expanding bracket for the trailer according to claim 3, wherein: the movable arm (3) is hollow, a second supporting plate (32) is fixedly arranged in the movable arm, and a hole for the bolt (41) to penetrate through is formed in the second supporting plate (32).

5. The square hole expanding bracket for the trailer according to claim 4, wherein: the hole on the second supporting plate (32) is a round hole, and an internal thread (321) capable of being matched with the bolt (41) is arranged on the inner wall of the round hole on the second supporting plate (32).

6. The trailer square hole expanding bracket according to claim 4, wherein: one end of the bolt (41) is provided with a nut (42), and the nut (42) can abut against one side of the second support plate (32).

7. The square hole expanding bracket for the trailer according to any one of claims 4 to 6, wherein: positioning grooves (51) are formed in the movable arm (3) and the cantilever (21), positioning blocks (52) are arranged on the first supporting plate (23) and the second supporting plate (32), and the positioning blocks (52) can be inserted into the corresponding positioning grooves (51).

8. The square hole expanding bracket for the trailer according to any one of claims 1 to 6, wherein: the trailer is provided with a first jack (11) communicated with the connecting hole (1), the cantilever (21) is provided with a second jack (211), and the first jack (11) and the second jack (211) are internally provided with a plug-in component (6) for fixing the cantilever (21) in the connecting hole (1).

9. The square hole expanding bracket for the trailer according to any one of claims 1 to 6, wherein: the expansion support (2) is provided with an expansion pipe fitting (7), the expansion pipe fitting (7) is provided with a fixing hole (71), the expansion pipe fitting (7) is further provided with an expansion hole (72), and the expansion pipe fitting (7) is provided with a fastener (73) for fixing a structure to be mounted.

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