Ball clamping type ball clamping structure of bicycle carrying frame

Abstract

A ball clamping type ball clamping structure of a bicycle carrying frame is characterized in that a trailer ball is clamped and fixed through a ball clamping assembly in a ball clamping cover, the upper end of the ball clamping cover is provided with a control assembly used for controlling the ball clamping assembly to be locked or loosened, and a limiting face and a guiding face are arranged between the interior of the ball clamping cover and a clamping piece. The included angle between the limiting face and the guiding face ranges from 74 degrees to 83 degrees, and therefore when the ball clamping assembly is controlled by the control assembly, the trailer ball can be stably clamped or loosened, and the clamping force is stable.

Description

Technical Field

[0001] The invention relates to the field of fixing devices for a bicycle carrier frame, and in particular to a ball clamping structure for a bicycle carrier frame. Background Art

[0002] The applicant of the present invention recently proposed a ball clamping structure, which mainly uses three equiangularly arranged clamping plates to clamp and fix a trailer ball. The clamping plates can provide the ball clamping structure with clamping force for the trailer ball and is easy to use.

[0003] The above structure is well received in the market, but the clamping piece sometimes still has the problem of too loose or too tight clamping force. How to solve the above problem is a topic that the relevant industry players are actively working on. Summary of the invention

[0004] The main purpose of the present invention is to provide a ball clamping structure for clamping a ball on a vehicle frame, wherein an inclined surface is provided between the inside of the ball clamping cover and the clamping plate, and the angle of the inclined surface is between 74° and 83°. Therefore, when the ball clamping assembly is controlled by the control assembly, the trailer ball can be stably clamped or loosened, and the clamping force is stable.

[0005] Therefore, the structure of the present invention includes: a trailer ball, a ball clamping assembly, a ball clamping cover, a control assembly and a frame; The trailer ball is mounted on a vehicle body; The ball clamping assembly is installed in the ball clamping cover, and the ball clamping assembly includes three equiangularly arranged clamping pieces, each clamping piece has a pivot rod at the top, each pivot rod is pivoted to a combination seat, and is assembled on the upper end of the combination seat with a positioning piece, so as to limit the aforementioned clamping piece inside the ball clamping cover, each clamping piece is provided with an arc-shaped spherical end for covering the trailer ball at the center, and a limiting end extending outward is provided below the spherical end, and the limiting end edge of each clamping piece has three adjacent and inclined limiting surfaces; The aforementioned ball clamping assembly and control assembly are connected to the frame through the ball clamping cover. The ball clamping cover is composed of a plurality of plates connected together. The ball clamping cover has three large joint surfaces arranged at equal angles, the large joint surfaces are formed by connecting two plates together, and three small joint surfaces adjacent to the large joint surfaces and arranged at equal angles. The aforementioned three large joint surfaces and three small joint surfaces form a three-dimensional hexagonal cover structure. A carrier is provided on the top of the ball clamping cover, and the ball clamping cover is connected to the frame through one group of large joint surfaces. The control assembly is pivotally connected to the carrier at the upper end of the ball clamp cover, and the control assembly includes a control handle, a linkage plate and a combination bolt. The combination bolt passes through the linkage plate from one side of the ball clamp assembly upward and is screwed on the control handle. The combination bolt produces a pressing and releasing effect on the linkage plate. The interior of the ball clamping cover has guiding surfaces corresponding to each limiting surface, and the angle between the limiting surface and the guiding surface is between 74° and 83°. Therefore, when the trailer ball is clamped and fixed by the control component, or the trailer ball is unlocked to be separated from the ball clamping component, the limiting surface of the clamping plate of the ball clamping component can smoothly climb or descend along the guiding surface, so as to achieve the purpose of convenient and smooth use.

[0006] In an embodiment of the present invention, the opposite side of each large joint surface of the ball clamping cover is a small joint surface.

[0007] In an embodiment of the present invention, the frame can be assembled into a bicycle carrying frame.

[0008] In an embodiment of the present invention, the limiting surface and the guiding surface are in surface contact.

[0009] In an embodiment of the present invention, a knob for adjusting the position of the coupling bolt is disposed on the top of the control handle, and the position of the ball clamping assembly can be controlled by the knob, thereby adjusting the clamping force of the ball clamping assembly.

[0010] Through the above description, the characteristics and effects of the present invention are briefly described as follows: 1. Compared with the conventional screw tightening method, the structure of the present invention uses a surface contact method to limit the ball clamping assembly by the guide surface. Therefore, the clamping force is large and the clamping piece will not be separated.

[0011] 2. The present invention has the advantage that the clamping piece of the ball clamping assembly is provided with an inclined limiting surface, which cooperates with the guiding surface of the ball clamping cover to stably clamp and fix the trailer ball, or release and loosen it.

[0012] 3. The ball cover can be made by connecting the plates, which can reduce the manufacturing cost and the angle is easy to fix. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 : A structural stereogram of the present invention; Figure 2A : Structural exploded view of the present invention; Figure 2B : A schematic cross-sectional view of the ball clamp cover of the present invention; Figure 3A : Structural cross-sectional view of the present invention; Figure 3B : Figure 3A A magnified schematic diagram of part A; Figure 4 : The present invention uses action diagram (I) to push up the control component; Figure 5A : The present invention is used in action diagram (ii), the ball clamping assembly is in a state of extending downward along the guide surface of the ball clamping cover; Figure 5B : Figure 5A A magnified schematic diagram of part B; Figure 6 : The state of the present invention clamping the trailer ball.

[0014] Description of Reference Numerals 10: Trailer Ball 20: Ball clamp assembly 21: Clamping piece 22: Pivot rod 23: Combination seat 24: Positioning piece 25: Spherical end 26: Limit end 261: Limiting surface 30: Ball cover 31: Large joint surface 32: Small joint surface 33: Carrier 34: Guide surface 40: Control components 41: Control handle 42: Linking piece 43: Combination bolt 44: Knob 50:Frame A: Angle. DETAILED DESCRIPTION

[0015] like Figures 1 to 3B As shown, the vehicle frame ball clamping structure of the present invention comprises: a trailer ball 10, a ball clamping assembly 20, a ball clamping cover 30, a control assembly 40 and a frame 50.

[0016] like FIG. 3A to FIG. 5B As shown, the trailer ball 10 is installed on a vehicle body (not shown).

[0017] like Figures 2A to 6 As shown, the ball clamping assembly 20 is installed in the ball clamping cover 30, and the ball clamping assembly 20 includes three equiangularly arranged clamping plates 21, and the top of each clamping plate 21 has a pivot rod 22, and each pivot rod 22 is pivoted to a combination seat 23, and is assembled on the upper end of the combination seat 23 with a positioning plate 24, so as to limit the aforementioned clamping plate 21 inside the ball clamping cover 30, and each clamping plate 21 is provided with an arc-shaped spherical end 25 for covering the trailer ball 10 in the center, and a limiting end 26 extending outward is provided below the spherical end 25, and the edge of the limiting end 26 of each clamping plate 21 has three adjacent and inclined limiting surfaces 261.

[0018] like Figures 2A to 6As shown, the aforementioned ball clamping assembly 20 and control assembly 40 are connected to the frame 50 through the ball clamping cover 30. The ball clamping cover 30 is composed of a plurality of plates connected together. The ball clamping cover 30 has three large joint surfaces 31 that are equiangularly arranged and formed by connecting two plates, and three small joint surfaces 32 that are adjacent to the large joint surfaces 31 and equiangularly arranged. The aforementioned three large joint surfaces 31 and three small joint surfaces 32 form a three-dimensional hexagonal cover structure. A carrier 33 is provided on the top of the ball clamping cover 30, and the ball clamping cover 30 is connected to the frame 50 through one group of large joint surfaces 31. In addition, as Figure 2B As shown, the opposite side of each large joint surface 31 of the ball clamping cover 30 is a small joint surface 32.

[0019] like Figures 1 to 6 As shown, the control assembly 40 is pivotally connected to the carrier 33 at the upper end of the ball clamp cover 30, and the control assembly 40 includes a control handle 41, a linkage piece 42 and a combination bolt 43. The combination bolt 43 is screwed on the control handle 41 after passing through the linkage piece 42 from one side of the ball clamp assembly 20 upwards, and the combination bolt 43 produces a pressing and releasing effect on the linkage piece 42. In addition, a knob 44 for adjusting the position of the combination bolt 43 is provided at the top of the control handle 41, and the position of the ball clamp assembly 20 can be controlled by the knob 44, thereby adjusting the clamping force of the ball clamp assembly 20.

[0020] like Figures 2A to 6 As shown, the interior of the ball clamping cover 30 has guiding surfaces 34 corresponding to each limiting surface 261, and the angle A between the limiting surface 261 and the guiding surface 34 is between 74° and 83°. Therefore, when the trailer ball 10 is clamped and fixed by the control component 40, or unlocked, the limiting surface 261 of the clamping piece 21 of the ball clamping component 20 can smoothly climb or descend along the guiding surface 34, so as to achieve the purpose of convenient and smooth use.

[0021] The above is the description of each component of the present invention. The following will introduce the instructions for use of the present invention and the effects that can be obtained.

[0022] like Figure 4 As shown, the operating handle 41 of the push control assembly 40 is moved upward, so that the coupling bolt 43 is pushed downward, and at the same time, the state in which the linking piece 42 is pressed by the operating handle 41 is released.

[0023] like Figure 5A , Figure 5B As shown, due to the downward push of the coupling bolt 43, the three groups of clamping pieces 21 of the ball clamping assembly 20 are driven to move downward together, as shown in FIG. Figure 3B , Figure 5BLooking at the enlarged part, the clamping piece 21 of the ball clamping assembly 20 descends along the guide surface 34 through the limiting surface 261 at the bottom, and then slightly extends out from the ball clamping cover 30. Because the angle A between the limiting surface 261 and the guide surface 34 is between 74° and 83°, the advantage at this angle is that it has a clamping push-pull surface, so that the clamping piece 21 can tightly clamp the trailer ball 10, or the ball clamping assembly 20 can smoothly detach and extend slightly from the ball clamping cover 30.

[0024] like Figure 3A , Figure 3B , Figure 6 As shown, when the trailer ball 10 is to be clamped, compared with the conventional ball clamping structure tightened by screws, the structure of the present invention limits the ball clamping assembly 20 by the guide surface 34 in a surface contact manner, so that the clamping force is large and will not cause the clamping piece 21 to detach.

[0025] like Figures 1 to 6 As shown, the clamping piece 21 of the ball clamping assembly 20 of the present invention is provided with an inclined limiting surface 261, which cooperates with the guiding surface 34 of the ball clamping cover 30 to stably clamp and fix the trailer ball 10, or release and loosen it.

[0026] Furthermore, compared with the existing ball clamping cover 30, the ball clamping cover 30 of the present invention can be manufactured by connecting plates, which can reduce the manufacturing cost and the angle is easy to fix.

[0027] like Figure 1 , Figure 2A , Figure 2B As shown, the frame 50 can be assembled into a bicycle carrying frame. In addition, the frame 50 can also be assembled into a luggage tray, a storage box, or a storage tray.

[0028] It should be stated that the above are specific embodiments of the present invention and the technical principles used. If the changes made according to the concept of the present invention do not exceed the spirit covered by the description and drawings, they should be within the scope of the present invention.

Claims

1. A ball clamping structure for a vehicle frame, characterized in that: include: A trailer ball, a ball clamp assembly, a ball clamp cover, a control assembly and a frame; The trailer ball is mounted on a vehicle body; The ball clamping assembly is installed in the ball clamping cover, and the ball clamping assembly includes three clamping pieces arranged at equal angles, each clamping piece has a pivot rod at the top, each pivot rod is pivoted to a combination seat, and is assembled on the upper end of the combination seat with a positioning piece, so as to limit the clamping piece inside the ball clamping cover, each clamping piece is provided with an arc-shaped spherical end for covering the trailer ball at the center, and a limiting end extending outward is provided below the spherical end, and the limiting end edge of each clamping piece has three adjacent and inclined limiting surfaces; The ball clamping assembly and the control assembly are connected to the frame through the ball clamping cover. The ball clamping cover is composed of a plurality of plates connected together. The ball clamping cover has three large joint surfaces arranged at equal angles, the large joint surfaces are formed by connecting two plates, and three small joint surfaces adjacent to the large joint surfaces and arranged at equal angles. A three-dimensional hexagonal cover structure is formed by the three large joint surfaces and the three small joint surfaces. A carrier is provided on the top of the ball clamping cover, and the ball clamping cover is connected to the frame through one group of large joint surfaces. The control assembly is pivotally connected to the carrier at the upper end of the ball clamp cover, and the control assembly includes a control handle, a linkage plate and a combination bolt. The combination bolt passes through the linkage plate from one side of the ball clamp assembly and is screwed on the control handle. The linkage plate is pressed and released by the combination bolt. The interior of the ball clamping cover has guiding surfaces corresponding to each limiting surface, and the angle between the limiting surface and the guiding surface is between 74° and 83°. Therefore, when the trailer ball is clamped and fixed by the control component, or the lock is released so that the trailer ball is detached from the ball clamping component, the limiting surface of the clamping piece of the ball clamping component can smoothly climb or descend along the guiding surface, achieving the purpose of convenient and smooth use.

2. The ball clamping structure for a vehicle frame according to claim 1, characterized in that: The side opposite to the large joint surface of the ball clamping cover is a small joint surface.

3. The ball clamping structure for a bicycle frame according to claim 1, characterized in that: The frame body can be assembled with a bicycle carrying frame.

4. The ball clamping structure for a vehicle frame according to claim 1, characterized in that: The limiting surface is in surface contact with the guiding surface.

5. The ball clamping structure for a bicycle frame according to claim 1, characterized in that: A knob for adjusting the position of the combining bolt is arranged on the top of the control handle, and the knob can control the position of the ball clamping assembly, thereby adjusting the clamping force of the ball clamping assembly.

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