RU2442703C2 - Connection unit designed for connection between bicycle transportation unit and transportation vehicle - Google Patents

Abstract

FIELD: mechanical engineering.

SUBSTANCE: invention refers to the field of mechanical engineering and in particular to the connection unit designed for connection between the bicycle transportation unit and the pull-type device ball on the transportation vehicle. The connection unit includes: a base plate that contains a connecting piece and a hollow cone part. The connecting piece is designed for connection to the bicycle transportation unit, and the hollow cone part has an open bottom section and a through-hole that is made at the top section of the hollow cone part. The connection unit includes a mortice that goes along the periphery and a lateral mortice. The mortice that goes along the periphery is linked with the lateral mortice. The connection unit also contains a horizontal tube and a fixing part, a clamping device, clamps, a base pin, the first connection section, the second connection section.

EFFECT: increase in security of attachment of the cargo transportation unit on the transportation vehicle.

6 cl, 21 dwg

Description

Technical field

This invention relates to a fastening device for connecting a bicycle transport device to a ball of a towing device at the rear of a vehicle.

BACKGROUND OF THE INVENTION

A conventional bicycle transport device 8 is shown in FIGS. 14A and 14B and generally includes a fastener that is used to couple to a ball 71 of a towing device mounted at the rear of the vehicle, which is not shown here. The fastening device comprises, as a main element, a C-shaped frame 82 containing an open end and a slot 811 that is formed on its lower side 81. A U-shaped protrusion 812 is located on top of the lower side 81 and surrounds the slot 811. The ball 71 of the hitch device is inserted with the open end and is located inside the slot 811 and rests on the protrusion 812. A through hole is made in the upper part of the C-shaped frame 82, and a nut 821 is mounted on top of the C-shaped frame 82, while the hole communicates with a threaded hole in the nut 821. Re the flange shank 83 passes through the nut 821, being in it in a threaded connection, and the hole, so that it abuts against the ball 71 of the hitch.

However, the threaded shank 83 is easily loosened due to shaking, especially when the vehicle is moving along bumpy roads and the threaded shank 83 can be deformed and the thread is easily damaged. In addition, there is no spring washer to lock the threaded shank 83, which can easily loosen. As soon as the threaded shank 83 cannot hold the ball 71 of the towing device, the bicycle device can separate from the ball 71 of the towing device. In addition, the threaded shank 83 is open and unprotected, and anyone can easily unscrew the threaded shank 83 and remove the bicycle transport device along with the bicycles.

The aim of the present invention is to provide a fastening device, which involves two locking forces acting in two perpendicular directions, which ensure reliable fastening and eliminate the disadvantages of a traditional fastening device.

Summary of the invention

The present invention relates to a fastening device for connecting a bicycle transporting device to a ball of a towing device, wherein the fastening device comprises a base having a hollow conical part open from below, and a through hole is made in the upper part of the hollow conical part. In the wall of the hollow conical part, through slots are made, one passing along the circumference and the other longitudinal, while the slot passing around the circumference communicates with the longitudinal slot. A horizontal pipe consisting of two parts protrudes from the conical part, between which there is a longitudinal groove. A longitudinal slot is located between these two parts.

The clamping device includes several clamps located in the hollow conical part, and in each clamp there is a recess made in its inner part. The recesses of several clamps form the volume into which the ball of the towing device enters. The main bolt has a head and a body, the head of the main bolt is sandwiched between the respective upper ends of the clamps, and the body of the bolt protrudes from above the set of clamps. The spring is mounted on the body of the bolt, which passes into the hollow conical part and through the upper hole of the hollow conical part.

The first mounting block contains a round handle located on top of the hollow conical part and firmly connected to the body of the main bolt so that when pulling up the main bolt, a series of clamps could clamp the ball of the hitch.

The second mounting unit has a handle, a rod and a clamping bar, while the handle has an end part, and the rod has a head pivotally connected to the end part, and a tie rod passing through both parts of the horizontal pipe and firmly connected to them. The pressure bar has one end pivotally connected to the end portion, and there is a protrusion on one side of the pressure bar. This protrusion presses on the locking part so as to narrow the longitudinal slot when the handle is in the locked position.

The invention will become more apparent from the following description, when considered together with the accompanying drawings, which show, by way of illustration only, a preferred embodiment of the invention.

Brief Description of the Drawings

Figure 1 is a perspective view showing how a device for transporting bicycles is connected to a mounting device according to this invention;

Figure 2 is a perspective view with a spatial separation of the parts, which shows the mounting device according to this invention;

Figure 3 is another perspective view with a spatial separation of the parts, which shows the mounting device according to this invention;

Figure 4 is a cross section showing that the ball of the hitch is clamped and the main bolt is connected to a round handle;

Fig. 5A is a cross-sectional view showing that the cover has been removed from the round handle;

5B is a cross-sectional view showing that the fixing screw is unscrewed from the main bolt;

5C is a cross-sectional view showing that the fixing screw is removed from the main bolt;

Fig. 5D is a cross-sectional view showing that the round handle is separated from the main bolt;

Fig. 5E is a cross-sectional view showing that the hollow conical part is separated from the clamps by means of a spring;

Fig. 6A is a cross-sectional view showing that the round handle is completely separated from the main bolt;

6B is a cross-sectional view showing that the ball of the tow hitch is completely separated from the hollow conical portion of the base;

On figa - shows that the handle is in the open position;

On figv - shows that the handle is in the locked position;

Fig. 8 is a perspective view showing that the handle is ready to be rotated from the closed position to the open position;

In Fig.9 - it is shown that the limiter restricts the rotational movement of the device for transporting bicycles;

Figure 10 - shows that the device for transporting bicycles contains a folding extension cord;

11 - it is shown that each of the clamps has concave surfaces to reduce their weight;

12 is a cross-sectional view showing a fastening device in which clamps with concave surfaces are used;

13 is a side view showing that the bicycle transport device mounted on the attachment device according to the present invention can be rotated by a certain angle;

Figa is a perspective view showing a traditional mounting device for a device for transporting bicycles, and

14B is a partial sectional view showing a conventional fastening device.

Detailed Description of a Preferred Embodiment

As can be seen from FIGS. 1-4, the attachment device for connecting the bicycle transport device 120 to the ball 50 of the towing device on the vehicle 60 (FIG. 13) comprises a base 10 having a connecting part 12 on its first side and a hollow conical a part 11 connected to the second side of the base 10. The connecting part 12 is connected to the bicycle transport device 120, and the hollow conical part 11 has an open lower part, and a through hole 110 is made in the upper part of the hollow conical part 11. Passing The circumferential groove 111 and the longitudinal groove 112 are made through in the wall of the hollow conical part 11, while the longitudinal groove 112 opens into the lower edge of the hollow conical part 11. The circumferential groove 111 communicates with the longitudinal groove 112. The horizontal pipe 13 protrudes from the conical part 11 and consists of two parts, between which there is a longitudinal groove, and a longitudinal slot 112 is located between these two parts. The locking part 130 is connected to the outer surface of one of the two parts of the horizontal pipe 13.

The clamping device 20 contains a series of clamps 21, and in each clamp 21 there is a recess 211 made on its inner side. The recesses 211 of several clamps 21 form the volume into which the ball 50 of the towing device enters, as shown in FIG. The clamps 21 are located inside the hollow conical part 11. Each of the clamps 21 contains a recess 210 made on its inner side, and a recess 210 is located close to the upper edge of each clamp 21.

The main bolt 22 has a head and a body, the head of the main bolt 22 is located inside the volume formed by a series of grooves 210, and the body of the bolt protrudes from above from the set of clamps 21. The spring 23 is mounted on the body of the bolt, which passes into the hollow conical part 11 and through the upper hole 110 of the hollow conical part 11. The body of the main bolt 22 includes a section 221 provided with a thread, and a threaded hole 220 is made at its upper end.

The first mounting unit 30 comprises a round handle 31 located on top of the hollow conical part 11 and having a reliable threaded connection to the threaded portion 221 of the body of the main bolt 22. The fixing screw 32 passes through the round handle 31 and forms a threaded connection with a threaded hole 220 in the main bolt . A number of clamps 21 come close to each other if the main bolt 22 is pulled up by the round handle 31. The spring 23 is located between the protruding part on the set of clamps 21 and the inner ceiling of the hollow conical part 11.

The second mounting unit 40 includes a handle 41, a rod 42 and a pressure bar 43, while the handle 41 has an end portion 410, and an end portion 410 of the handle 41 includes two side walls. Through these two side walls, respectively, two through holes 411 are made. The rod 42 has a head pivotally mounted between the two side walls of the end portion 410, and the rod end of the rod 42 passes through both parts of the horizontal pipe 13 and is firmly connected to them. The pressure bar 43 has one end pivotally connected to the end portion 410, and there is a protrusion 430 on one side of the pressure bar 43. The hinge pin 411A passes through the end part of the pressure bar 43, the through holes 411 and the thrust head 42. At least one of two the side walls of the end portion 410 has an elongated slot 412, and the protrusion 430 enters the elongated slot 412 with the possibility of movement in it.

As shown in FIG. 7B, the handle is in the locked position, in which the handle 41 is rotated around the pivot pin 411A and is directed upward. The protrusion 430 on the clamping bar 43 presses on the fixing part 130 so that it presses on the left half of the two-piece horizontal pipe 13 in the direction of the right half of the two-piece horizontal pipe 13 so as to narrow the longitudinal slot 112 and allow the hollow conical the parts 11 to hold the clamps 21. Therefore, the ball 50 of the hitch is securely clamped by the clamps 21, which are vertically controlled by the main bolt 22 and the round handle 31, and the clamps 21 are firmly held by loi conical portion 11 with the handle 41 in the horizontal direction.

As shown in FIGS. 7A and 8, when dismantling the bicycle transport device 120 from the ball 50 of the tow hitch, the handle 41 is rotated to the open position, taking a horizontal position, and the protrusion 430 is removed from the fixing part 130, and the hollow conical part 11 weakens locking the clips 21. As shown in FIGS. 5A-5E, the cover (not indicated by a number) on the round handle 31 is first removed from the round handle 31, and the fixing screw 32 is unscrewed and removed from the threaded hole 220 of the main bolt 22, as shown in Fi 5C. Then, the round handle 31 is removed from the main bolt 22, and the spring 23 pushes the hollow conical portion 11 away from the clamps 21, as shown in FIG. 5E. As shown in FIGS. 6A and 6B, the clamps 21 can then be separated from the ball 50 of the hitch to remove the bicycle transport device 120 from the ball 50 of the hitch.

As shown in FIGS. 9 and 13, the restriction element 14 is connected to the base 10 and is located adjacent to the connecting part 12 so that the restriction element 14 can be used to limit the rotational movement of the bicycle transporting device 120. This allows you to open the back door of the van 60 when attached to the ball 50 of the hitch device 120 for transporting a bicycle.

Figure 10 shows that the device for transporting a bicycle 120 may include an extension 121, the design of which allows it to be folded towards the vertical rack of the device 120 for transporting bicycles in order to save space. 11 and 12 show that each of the clamps 21 may contain several concave surfaces 212 on its outer surface in order to reduce weight.

The fastening device creates two forces acting in different directions and ensuring the reliability of gripping the ball 50 of the towing device with the clamps 21, so that the device for transporting bicycles 120 is not separated from the ball 50 of the towing device. In addition, the spring 23 separates the hollow conical portion 11 from the clamps 21 when the forces in two different directions cease, and the user can easily remove the bicycle transport device 120 from the ball 50 of the tow hitch.

Although one embodiment of the invention has been shown and described herein, those skilled in the art will understand that other embodiments may be practiced that will not fall outside the scope of the invention.

Claims (6)

1. A fastening device for connecting a device for transporting a bicycle with a ball of a towing device on a vehicle, wherein the fastening device comprises:
a base having a connecting part on its first side and a hollow conical part connected to the second side of the base, while the connecting part is intended to be connected to a bicycle transporting device, and the hollow conical part has an open lower part and a through hole made in the upper part of the hollow the conical part, the circumferential slot and the longitudinal slot, made through in the wall of the hollow conical part, while the circumferential slot communicates with the longitudinal gap view, a horizontal pipe protruding from the conical part and consisting of two parts, between which there is a longitudinal groove, while a longitudinal slot is located between these two parts, and a fixing part connected on the outside with one of the two parts of the horizontal pipe;
a clamping device, including a number of clamps, with each clamp having a recess made in its inner part, and the recesses of several clamps form a volume intended for the ball of the towing device to enter into it, and the clamps are located inside the hollow conical part, the main bolt having a head and the body, the head of the main bolt being sandwiched between the respective upper ends of the clamps, and the body protrudes from above from the set of clamps, a spring placed on the body of the bolt, which passes into the hollow conical part and squ h upper hole in the hollow conical part;
a first attachment unit comprising a round handle that is located on top of the hollow conical part and has a reliable connection with the body of the main bolt, while the clamps come together when the main bolt is pulled upward by the round handle, and
the second mounting unit comprising a handle, a rod and a pressure bar, while the handle has an end part, and the rod has a head pivotally connected to the end part, and a rod end passing through both parts of the horizontal pipe and securely connected to both parts of the horizontal pipe, and the pressure bar has one end pivotally connected to the end portion, a protrusion protruding from one side of the pressure bar, the protrusion presses on the locking part to narrow the longitudinal slot when the handle is in the polo Locking. 2. The device according to claim 1, in which the restrictive element is connected to the base and located next to the connecting part, while the restrictive element is designed to limit the rotational movement of the device for transporting a bicycle. 3. The device according to claim 1, in which the body of the main bolt contains a threaded portion and a threaded hole made in its upper part, the fixing screw passing through the round handle and forms a threaded connection with a threaded hole in the main bolt. 4. The device according to claim 1, in which each of the clamps contains a groove made in its inner part, and this groove is located near the upper edge of each clamp, while the head of the main bolt is located inside the volume formed by several grooves. 5. The device according to claim 1, in which the end part of the handle contains two side walls, and two through holes respectively pass through the two side walls, while the hinge pin passes through the end of the pressure plate, through holes and the thrust head. 6. The device according to claim 1, in which each clamp has many concave surfaces made on its outer surface.

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