Hidden frame folding structure

Abstract

The utility model discloses a hidden type frame folding structure which comprises a frame front section and a frame rear section, the frame front section and the frame rear section are hinged, and the frame front section and the frame rear section are locked or unlocked through a lock catch assembly. A containing groove stretching across the frame front section and the frame rear section is formed between the frame front section and the frame rear section, and the lock catch assembly is arranged in the containing groove and is complementary with an opening of the containing groove in shape. The lock catch assembly does not protrude out of the surface of the frame, the overall attractiveness is improved, and the risk that the legs are prone to being collided is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of bicycles, in particular to a hidden frame folding structure. Background Art

[0002] A folding mechanism is often required between bicycle racks to enable the bicycle racks to have a folding function. The mechanism consists of a front frame section, a rear frame section and a locking assembly. The front frame section and one side of the rear frame section are rotatably connected, and the locking assembly is installed on the other side of the front frame section and the rear frame section to fix the other side of the front frame section and the rear frame section, thereby fixing the front frame section and the rear frame section as a whole. However, the locking assemblies on the market are usually higher than the outer side of the frame at the front frame section and the rear frame section, which not only affects the appearance, but also poses a risk of colliding with the legs. Utility Model Content

[0003] The utility model aims to provide a hidden frame folding structure designed to solve the deficiencies of the above-mentioned technology.

[0004] The utility model designs a hidden frame folding structure, comprising a frame front section and a frame rear section, wherein the frame front section and the frame rear section are hinged, the frame front section and the frame rear section are locked or unlocked by a locking component, a receiving groove spanning the frame front section and the frame rear section is opened between the frame front section and the frame rear section, and the locking component is arranged in the receiving groove and complements the opening shape of the receiving groove.

[0005] Preferably, the locking assembly includes a handle, one end of which is hinged to the front section or the rear section of the frame, and an integrated protrusion is provided on the surface of the handle facing the accommodating groove, and the protrusion is provided with a first threaded hole that passes through the frame in the front-to-back direction, and a locking screw is provided in the first threaded hole, and the top of the locking screw extends out of the first screw hole in the direction of the handle hinge point, and accordingly, a pin column that forms a buckle with the locking screw is provided in the accommodating groove of the front section or the rear section of the frame.

[0006] According to further optimization, a second threaded hole perpendicular to the first threaded hole is formed on the protrusion, and a pre-tightening screw for adjusting the pre-tightening degree of the locking screw is arranged in the second threaded hole.

[0007] Preferably, the end surface of the front section of the frame is provided with a protrusion or a groove, and the end surface of the rear section of the frame is provided with a corresponding groove or a protrusion, so that the end surfaces of the front section of the frame and the rear section of the frame form a concave-convex intersection.

[0008] Further optimization is provided between the front section of the frame and the rear section of the frame, and the two ends of the connecting block are respectively connected to the front section of the frame and the rear section of the frame through a first rotating shaft, and the two first rotating shafts are arranged parallel to each other, so that the front section of the frame and the rear section of the frame can be folded relative to each other.

[0009] Further optimized, the handle is hinged to the front section of the frame or the rear section of the frame through a second rotating shaft, and the second rotating shaft is located in the accommodating groove.

[0010] Further optimized, the pin is aligned with one of the first rotating shafts; the second rotating shaft is aligned with the other first rotating shaft.

[0011] Further optimized, the handle is provided with a force-applying portion at one end away from the second hinge axis for facilitating the rotation of the handle, and the force-applying portion is located in the accommodating groove.

[0012] The technical effect of the utility model is that a receiving groove spanning the front section and the rear section of the frame is opened on the frame, and a locking assembly for locking the front section and the rear section of the frame is located in the receiving groove, so that the locking assembly, that is, the handle, can be hidden in the receiving groove or flush with the notch of the receiving groove without protruding from the surface of the frame, which not only increases the overall aesthetics but also avoids the risk of easy bumps on the legs. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is the overall structure diagram (when in locked state);

[0014] Figure 2 This is another perspective of the overall structure (when in locked state);

[0015] Figure 3 It is the overall structure diagram (when in unlocked and folded state);

[0016] Figure 4 It is an exploded diagram of the overall structure;

[0017] Figure 5 This is an exploded view of the overall structure from another perspective;

[0018] Figure 6 This is a diagram of the handle structure.

[0019] In the figure: 1. front section of the frame; 2. rear section of the frame; 3. accommodating groove; 4. handle; 5. protrusion; 6. first threaded hole; 7. locking screw; 8. pin; 9. second threaded hole; 10. pre-tightening screw; 11. protrusion; 12. groove; 13. connecting block; 14. first rotating shaft; 15. second rotating shaft; 16. force-applying part; 17. reinforcing rib. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of the utility model.

[0021] In this embodiment, Figure 1 As shown, the vehicle comprises a front frame section 1 and a rear frame section 2, both of which are tubular structures. The front frame section 1 and the rear frame section 2 are hingedly connected, and the front frame section 1 and the rear frame section 2 are locked or unlocked by a locking assembly. When in the locked state, the ends of the front frame section 1 and the rear frame section 2 are connected to form a coaxial connection; when in the unlocked state, the front frame section 1 and the rear frame section 2 are relatively rotated to a folded state.

[0022] The front section 1 of the frame and the rear section 2 of the frame are hinged by a first rotating shaft 14, and the hinge point is located on one side of the axis of the front section 1 of the frame and the rear section 2 of the frame, so that the front section 1 of the frame and the rear section 2 of the frame can rotate relative to each other. It should be noted that a connecting block 13 is provided between the front section 1 of the frame and the rear section 2 of the frame, and avoidance grooves are provided on the same side of the front section 1 of the frame and the rear section 2 of the frame. The connecting block 13 is located in the avoidance groove and is flush with the opening of the avoidance groove. The two ends of the connecting block 13 are respectively connected to the front section 1 of the frame and the rear section 2 of the frame through the first rotating shaft 14, and the two first rotating shafts 14 are arranged parallel to each other. , so that the front section 1 of the frame and the rear section 2 of the frame can be relatively folded on the basis of relative rotation, which is different from the single-hole single-shaft setting on the market. After relative rotation of 180 degrees, the connecting block 13 part will be convex, and the utility model adopts two first rotating shafts 14, that is, a double-axis connection. When the front section 1 of the frame and the rear section 2 of the frame are relatively rotated 180 degrees, the connecting block 13 is always in the avoidance groove and will not be convex. Therefore, even after folding, it can maintain a non-convex effect, which not only has a beautiful appearance, but also reduces safety hazards, and at the same time prevents the end face of the frame from being deformed and affecting the docking.

[0023] A receiving groove 3 is provided between the front section 1 of the frame and the rear section 2 of the frame. The receiving groove 3 spans the front section 1 of the frame and the rear section 2 of the frame, that is, the receiving groove 3 is arranged along the axial direction of the frame, part of which is located at the front section 1 of the frame, and the remaining part is located at the rear section 2 of the frame. After the front section 1 of the frame and the rear section 2 of the frame are connected, a complete receiving groove 3 is formed, and a locking component is arranged in the receiving groove 3. When the locking component is in the locked state, the locking component is hidden in the receiving groove 3, or is complementary to the opening shape of the receiving groove 3, so that when in the locked state, the locking component is flush with the outer periphery of the front section 1 of the frame and the rear section 2 of the frame, or is hidden in the receiving groove 3, which is not only beautiful, but also can avoid accidental touching of the locking component.

[0024] The lock assembly includes a handle 4, one end of which is hinged to the front section 1 of the frame or the rear section 2 of the frame, and one end of the handle 4 is hinged to the front section 1 of the frame or the rear section 2 of the frame through a second rotating shaft 15, and the second rotating shaft 15 is also located in the accommodating groove 3. In this embodiment, one end of the handle 4 is hinged to the rear section 2 of the frame through the second rotating shaft 15, and the hinge points between the handle 4 and the frame, and the hinge points between the front section 1 of the frame and the rear section 2 of the frame are symmetrically distributed on both sides of the axial direction of the frame, that is, the handle 4 and the connecting block 13 are symmetrically located on both sides of the axial direction of the frame, and a protrusion 5 is provided on the surface of the handle 4 facing the accommodating groove 3, and the protrusion 5 extends from the surface of the handle 4 and is designed as an integral part with the handle 4. In this embodiment, the protrusion 5 The shape is a cylinder, and its axial direction is consistent with the length direction of the handle 4. The protrusion 5 is provided with a coaxial first screw hole, and the first screw hole passes through both ends of the protrusion 5 along the axial direction of the protrusion 5. A locking screw 7 is arranged in the first threaded hole 6, and the top of the locking screw 7 extends out of the first screw hole toward the direction of the hinge point of the handle 4. Correspondingly, a pin 8 is provided in the accommodating groove 3 of the front section 1 of the frame, and the pin 8 is arranged parallel to the locking screw 7. When the handle 4 is rotated to be hidden in the accommodating groove 3, the top end of the locking screw 7 of the handle 4 will move radially from one side of the pin 8 to the other side along the outer circumference of the pin 8 to form a buckle with the pin 8, that is, the top end of the locking screw 7 and the axial body of the pin 8 form an interference fit.

[0025] For further optimization, a second threaded hole 9 perpendicular to the first threaded hole 6 is provided on the protrusion 5, and a pre-tightening screw 10 is arranged in the second threaded hole 9. The top end of the pre-tightening screw 10 is tightly against the shaft body of the locking screw 7. When the length of the top end of the locking screw 7 is adjusted, the pre-tightening screw 10 is tightly against the locking screw 7 to lock the locking screw 7, so that the locking degree between the locking screw 7 and the pin 8 can be adjusted.

[0026] In addition, the shapes of the receiving groove 3 and the handle 4 are adapted to each other so that the handle 4 can be completely hidden or embedded in the receiving groove 3 .

[0027] In this embodiment, the handle 4 is a straight strip structure, and a cylindrical mounting hole column structure is formed at the hinge point at one end of the handle 4, which is convenient for connecting with the second rotating shaft 15 to form a hinge. A force-applying portion 16 is formed at the other end of the handle 4 to facilitate hand-operated rotation of the handle 4. The protrusion 5 is located between the hinge point and the force-applying portion 16, that is, the concave block is located in the middle position of the handle 4, and a reinforcing rib 17 is provided between the mounting hole column and the handle 4.

[0028] The end surface of the front section 1 of the frame is provided with a protrusion 11 or a groove 12, and the end surface of the rear section 2 of the frame is provided with a corresponding groove 12 or a protrusion 11. When the front section 1 of the frame and the rear section 2 of the frame are connected, the end surfaces of the front section 1 of the frame and the rear section 2 of the frame form a concave-convex positioning to strengthen the connection between the front section 1 of the frame and the rear section 2 of the frame.

[0029] In addition, the pin 8 is aligned with one of the first rotating shafts 14; the second rotating shaft 15 is aligned with the other first rotating shaft 14. Since the pin 8, the first rotating shaft 14 and the second rotating shaft 15 are all installed through the radial mounting holes of the tubular structure of the frame, the radial mounting holes between the pin 8 and one of the first rotating shafts 14, and the radial mounting holes between the second rotating shaft 15 and the other first rotating shaft 14 are all provided with cover sheets, which not only prevent dust, but also hide the openings of the radial mounting holes, making the appearance more beautiful.

[0030] The present utility model is not limited to the above-mentioned optimal implementation mode. Anyone can derive other various forms of products under the inspiration of the present utility model. However, no matter what changes are made in the shape or structure, all those having the same or similar technical solutions as the present application fall within the protection scope of the present utility model.

Claims

1. A hidden frame folding structure, characterized in that: The invention comprises a front frame section (1) and a rear frame section (2), wherein the front frame section (1) and the rear frame section (2) are hingedly connected, and the front frame section (1) and the rear frame section (2) are locked or unlocked by a locking assembly, and a receiving groove (3) spanning the front frame section (1) and the rear frame section (2) is provided between the front frame section (1) and the rear frame section (2), and the locking assembly is arranged in the receiving groove (3) and is complementary to the opening shape of the receiving groove (3), and the end surface of the front frame section (1) is provided with a protrusion (11) or a groove (12), and the end surface of the rear frame section (2) is provided with a corresponding groove (12) or protrusion (11), so that the end surfaces of the front frame section (1) and the rear frame section (2) form a concave-convex fit.

2. A hidden frame folding structure according to claim 1, characterized in that: The locking assembly comprises a handle (4), one end of which is hinged to the front section (1) or the rear section (2) of the frame, and an integral protrusion (5) is provided on the surface of the handle (4) facing the receiving groove (3), and the protrusion (5) is provided with a first threaded hole (6) which passes through the frame in the front-rear direction, and a locking screw (7) is provided in the first threaded hole (6), and the top of the locking screw (7) protrudes out of the first screw hole in the direction of the hinge point of the handle (4), and correspondingly, a pin (8) which forms a buckle with the locking screw (7) is provided in the receiving groove (3) of the front section (1) or the rear section (2) of the frame.

3. A hidden frame folding structure according to claim 2, characterized in that: The protrusion (5) is provided with a second threaded hole (9) perpendicular to the first threaded hole (6), and a pre-tightening screw (10) for adjusting the pre-tightening degree of the locking screw (7) is arranged in the second threaded hole (9).

4. The hidden frame folding structure according to claim 2, characterized in that: A connecting block (13) is provided between the front section (1) and the rear section (2) of the frame, and two ends of the connecting block (13) are respectively connected to the front section (1) and the rear section (2) of the frame through first rotating shafts (14), and the two first rotating shafts (14) are arranged parallel to each other, so that the front section (1) and the rear section (2) of the frame can be folded relative to each other.

5. The hidden frame folding structure according to claim 4, characterized in that: The handle (4) is hinged to the front section (1) or the rear section (2) of the frame via a second rotating shaft (15), and the second rotating shaft (15) is located in the accommodating groove (3).

6. The hidden frame folding structure according to claim 5, characterized in that: The pin (8) is aligned with one of the first rotating shafts (14); and the second rotating shaft (15) is aligned with the other first rotating shaft (14).

7. The hidden frame folding structure according to claim 5, characterized in that: The handle (4) is provided with a force-applying portion (16) at one end away from the hinge second rotating shaft (15) for facilitating the operation of rotating the handle (4), and the force-applying portion (16) is located in the accommodating groove (3).

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