WO2020154881A1

WO2020154881A1 - Rotating shaft connector and foldable moped

Info

Publication number: WO2020154881A1
Application number: PCT/CN2019/073633
Authority: WO
Inventors: 李俊楠; 田园霏雪
Original assignee: 李俊楠
Priority date: 2019-01-29
Filing date: 2019-01-29
Publication date: 2020-08-06

Abstract

A rotating shaft connector, and a foldable moped and a foldable suitcase using the rotating shaft connector. The rotating shaft connector comprises: an elastic lock pin (40); a first connection member (10) mainly consisting of a pivoting shaft portion (11) and a positioning shaft plate portion (12); and a second connection member (20) mainly consisting of a connection ear portion (21) and a connection plate portion (22). The pivoting shaft portion (11) is sandwiched between two vertical arms of the connection ear portion (21), and rotatably connected to the connection ear portion (21) by means of a pivoting pin shaft (30). The elastic lock pin (40) is mounted on a transverse arm of the connection ear portion (21), and positioning lock grooves (a) are provided on the outer circumferential wall of the pivoting shaft portion (11). According to the rotating shaft connector, the use of the pivoting pin shaft (30) enables the first connection member (10) and the second connection member (20) to be turned and folded with respect to each other, and the positioning and fitting relationship between the positioning lock grooves (a) and the elastic lock pin (40) ensures that the second connection member (20) can be positioned and locked after being turned to a certain angle with respect to the first connection member (10); conditions for the application of the rotating shaft connector to foldable items are created while achieving the structural effect of positioning and locking of the rotating shaft connector itself.

Description

Rotating shaft connector and folding moped

Technical field

The invention relates to the technical field of mechanical parts and their application, in particular to a rotary shaft connector and a folding moped formed by using the connector.

Background technique

At present, due to the increasing requirements for the convenience of storage, folding, carrying and transportation of items, various foldable items have been widely used, such as folding bicycles, scooters, tools, and even suitcases. Among them, the connector connected between the relatively foldable parts has a vital influence on the overall performance of the foldable article.

technical problem

Traditional folding connectors (such as folding, quick release, etc.) either have too complex structure, high cost, and inconvenient disassembly and assembly of the connector itself, or the structure is too simple and lacks the necessary positioning function, which makes this type of connector not only impossible It has a good auxiliary effect on the folding performance of the article, and to a certain extent also affects the storage and folding performance of the article.

Therefore, it is necessary to propose an improvement plan for the existing connector to expand its practical application range while improving its own structural performance and functionality.

Technical solutions

In view of the shortcomings of the above-mentioned prior art, the first object of the present invention is to provide a shaft connector; the second object of the present invention is to provide a folding bicycle based on the above-mentioned connector.

In order to achieve the above objective, the first technical solution adopted by the present invention is:

A shaft connector, which is characterized in that it includes:

A first connecting piece, the first connecting piece comprising a pivot shaft portion and a positioning shaft plate portion formed on a peripheral side of the pivot shaft portion;

The second connecting piece, the second connecting piece includes a connecting ear with a U-like overall shape and an adapter plate formed on the transverse arm of the connecting ear, and the pivot shaft is clamped to the connecting ear Between the two longitudinal arms of the, and through the pivot pin and the connecting ear for rotation connection;

The elastic lock pin is installed on the transverse arm connecting the ear portion, and the outer peripheral wall of the pivot shaft portion is provided with a positioning lock groove for the end of the elastic lock pin to align and fit.

Preferably, the elastic lock pin includes a pull rod that penetrates the transverse arm of the connecting ear and is distributed parallel or approximately parallel to the longitudinal arm of the connecting ear, and a pull rod formed at the end of the pull rod and located at the connecting ear. The limit piece in the transverse arm and a set of the set on the pull rod and located in the transverse arm connecting the ears or at least two arranged side by side on both sides of the pull rod in the axial direction of the pivot shaft and located on the transverse arms connecting the ears In the inner spring, the transverse arm of the connecting ear is provided with a receiving groove cavity for accommodating the spring, one end of the spring abuts against the limiting member, the other end abuts against the groove wall of the receiving groove, the pull rod The end or the limiting piece is fitted into the positioning lock groove.

Preferably, there are at least two positioning lock grooves, and the positioning lock grooves have a groove structure that matches the contour shape of the end of the pull rod or the contour shape of the stopper, and two positioning locks The grooves are distributed in a staggered manner on the peripheral wall of the pivot shaft part in a manner that the included angle is not greater than 90 degrees.

Preferably, the limiting member is a ring-shaped protruding structure that is distributed coaxially with the tie rod and formed at the end of the tie rod, or is a strip formed at the end of the tie rod and distributed perpendicular to the central axis of the tie rod. Shaped block structure.

Preferably, the pivot shaft portion includes a sleeve section for the pivot pin to pass through and an oblique half ring section formed at both ends of the sleeve section in the axial direction, and the positioning lock groove is located in the sleeve section On the outer peripheral wall of the, the oblique half-ring segment abuts against the longitudinal arm connecting the ear on the corresponding side;

The limiting member includes a curved strip plate portion attached to the outer peripheral wall of the sleeve section and formed at the end of the tie rod, and formed at both ends of the curved strip plate portion in the axial direction and is connected to the oblique half ring segment The end faces of the fan-shaped ring plate portion are opposite to each other, and the fan-shaped ring plate portion is clamped between the longitudinal arm of the connecting ear portion on the corresponding side and the shaft sleeve section.

Preferably, the positioning shaft portion is formed by horizontally extending the peripheral side of the pivot shaft portion, and the positioning shaft portion and located on the opposite end side of the pivot shaft portion are provided with a central axis and a central axis of the pivot shaft portion The bearing sleeve holes are arranged perpendicularly to each other, and the connecting plate part is perpendicular or nearly perpendicular to the longitudinal arm connecting the ear part.

Preferably, a mounting plate portion is provided on the connecting plate portion and at the opposite end side of the connecting ear portion, which is opposite to the direction in which the longitudinal arm of the connecting ear portion is located.

Preferably, the positioning shaft portion is formed by vertically extending the peripheral side of the pivot shaft portion, and the positioning shaft portion is provided on the opposite end side of the pivot shaft portion with a central axis and the center of the pivot shaft portion. The first toothed discs whose axes are perpendicular to each other;

It also includes a third connecting piece that is perpendicular to the positioning shaft plate and is a plate-shaped structure as a whole. The end of the third connecting piece is provided with a second toothed disk that engages with the first toothed disk, so On the third connecting piece and on the opposite end side of the second gear plate, there is opened a bearing sleeve hole whose central axis and the central axis of the second gear plate are perpendicular to each other; the connecting plate part is opposite to the longitudinal arm connecting the ear part Vertical or nearly vertical.

Preferably, it further includes a threaded locking rod, a threaded locking groove is opened in the central area of the second toothed disk, and a threaded locking hole is opened in the central area of the first toothed disk that is coaxially distributed with the threaded locking groove, The end of the threaded locking rod penetrates the threaded locking hole and is locked in the threaded locking groove.

The second technical solution adopted by the present invention is:

A folding power-assisted vehicle, which includes a front wheel handlebar assembly, a rear wheel pedal assembly and a shaft connector, the shaft connector adopts the above-mentioned shaft connector;

A steering shaft inserted into the bearing sleeve hole is arranged at the center of the bottom end of the front wheel handlebar assembly, and the front end of the rear wheel pedal assembly is installed on the connecting plate part.

Beneficial effect

In the present invention, the pivot pin is used to enable the first connecting piece and the second connecting piece to be relatively flipped and folded, and the aligning and fitting relationship between the positioning lock groove and the elastic lock pin is used to ensure that the second connecting piece is connected relative to the first The piece can be positioned and locked after being turned to a certain angle. While realizing the structural effect of positioning and locking of the connector itself, it creates conditions for the application of the connector on folded objects; and the shape of the connector based on the shaft Foldable items such as foldable mopeds and foldable bags have the characteristics of small volume after folding, small space occupation, and easy portability.

Description of the drawings

Figure 1 is a schematic diagram of the structural assembly of the connector in the first embodiment of the present invention in a folded state;

2 is a schematic diagram of the structure assembly of the connector of the first embodiment of the present invention in an unfolded state;

3 is a schematic cross-sectional structure diagram of the connector of the first embodiment of the present invention;

Figure 4 is a structural exploded view of the connector of the first embodiment of the present invention;

Figure 5 is an exploded schematic view of the structure of a booster formed based on the connectors of Figures 1 to 4;

Figure 6 is a schematic diagram of the structure assembly of a booster formed based on the connectors of Figures 1 to 4;

Figure 7 is an exploded schematic view of the structure of a booster luggage formed based on the booster of Figs. 5 and 6;

Figure 8 is a schematic diagram of the structural assembly of the connector of the third embodiment of the present invention in a folded state;

9 is a schematic diagram of the structure assembly of the connector of the third embodiment of the present invention in an unfolded state;

10 is a schematic cross-sectional structure diagram of the connector of the third embodiment of the present invention;

Figure 11 is a schematic structural exploded view of the connector of the third embodiment of the present invention;

Figure 12 is a schematic diagram of the structural assembly of the connector of the second embodiment of the present invention in an unfolded state;

Figure 13 is a schematic diagram of the structural assembly of the connector of the second embodiment of the present invention in a folded state;

FIG. 14 is an exploded schematic view of the structure of the connector of the second embodiment of the present invention;

Figure 15 is an exploded schematic view of the structure of a booster formed based on the connectors of Figures 12 to 14;

Figure 16 is a schematic diagram of the structure assembly of a booster based on the connectors of Figures 12 to 14;

Fig. 17 is an exploded schematic diagram of the structure of a booster luggage formed based on the booster vehicles of Figs. 15 and 16.

The best mode of the invention

The embodiments of the present invention will be described in detail below with reference to the accompanying drawings, but the present invention may be implemented in a variety of different ways defined and covered by the claims.

As shown in Figs. 1 to 4, 8 to 11 and Figs. 12 to 14, the shaft connector provided in this embodiment includes:

The first connecting member 10 mainly includes a pivot shaft portion 11 and a positioning shaft plate portion 12 formed on the circumferential side of the pivot shaft portion 11;

The second connecting member 20 mainly includes a connecting ear 21 with a "U"-like overall shape (the "U"-like shape described in this embodiment can be a standard "U"-shaped structure or a standard-based " U"-shaped structure) and the connecting plate 22 formed on the transverse arm of the connecting ear 21. The pivot shaft 11 is clamped between the two longitudinal arms of the connecting ear 21 and passed through a pivot pin. 30 is connected in rotation with the connecting ear 21;

The elastic lock pin 40 is installed on the transverse arm of the connecting ear 21, and the outer peripheral wall of the pivot shaft portion 11 is provided with a positioning lock groove a for the end of the elastic lock pin 40 to align and fit.

Thus, the pivot pin 30 can be used to realize the assembly combination between the first connecting piece 10 and the second connecting piece 20, and the effect of relative rotation or flipping and folding between the two can be achieved, and the positioning lock slot a is used. The aligning and fitting relationship with the elastic lock pin 40 can ensure that the second connecting member 20 can be positioned and locked after being turned to a certain angle relative to the first connecting member 10, thereby ensuring the relative angle locking between the two In turn, the connector itself has a structural effect of positioning and locking, which creates conditions for the application of the connector on folded articles.

For specific applications, refer to Figure 5, Figure 6, Figure 15, and Figure 16 for assembly and use of the booster, that is, connect the positioning axle plate portion 12 with the handlebar of the booster (such as rotating connection). The adapter plate portion 22 is connected (such as fixedly connected) with the pedal part of the booster, so that when the booster is folded, the end of the elastic lock pin 40 is separated from the positioning lock groove a in advance, and then the pedal part is turned over and stacked on On the handlebar column part, and then loosen the elastic lock pin 40, the end can be fitted into the corresponding positioning lock groove a to realize the folding storage and locking of the booster; on the contrary, when the booster is unfolded and used, The end of the elastic lock pin 40 is separated from the positioning lock groove a in advance, and then the pedal part is turned from the handlebar column part to a certain angle (such as the angle between the two is not greater than 90 degrees), and then the elastic lock pin is released 40, its end can be fitted into the corresponding positioning lock slot a to realize the locking of the unfolding and use of the booster; based on this, the use of the flip effect of the connector itself and its own locking function can effectively reduce the number of boosters. And other folding items need to be equipped with auxiliary accessories such as locks, which provide a guarantee for the folding storage and unfolding performance of the folded items.

Embodiments of the invention

In order to ensure the locking and positioning effect of the elastic lock pin 40 on the two connecting parts, the elastic lock pin 40 of this embodiment includes one end penetrated into the transverse arm of the connecting ear 21 and parallel to the longitudinal arm of the connecting ear 21 Distributed or approximately parallel tie rods 41, a stopper formed at the end of the railing 41 and located in the transverse arm connecting the ear 21, and a set of the tie rod 41 and located in the transverse arm connecting the ear 21 or At least two springs 43 arranged side by side on both sides of the pull rod 41 along the axial direction of the pivot shaft portion 11 and located in the transverse arm connecting the ear 21; wherein, a spring 43 is provided in the transverse arm connecting the ear 21. The receiving groove 44 of the spring 43 is placed, and one end of the spring 43 abuts against the limiting member, and the other end abuts against the groove wall of the receiving groove 44, and the end of the pull rod 41 or the limiting member is fitted into the positioning lock groove a . Thus, using the elastic effect of the spring 43, the operator can pull the rod 41 outward to disengage the stop member or the end of the rod 41 from the corresponding positioning lock groove a (at this time, the spring 43 is in a compressed state). After the second connecting member 20 is turned to a predetermined angle with respect to the first connecting member 10, the end of the stopper or the end of the pull rod 41 can be automatically fitted into the corresponding position under the action of the elastic force of the spring 43 by releasing the pull rod 41 In the lock groove a, the relative position of the two connecting pieces can be positioned and locked; of course, for ease of operation, a lateral side exposed on the connecting ear 21 can be provided on the pull rod 41 and located on the opposite end side of the limiting piece. The pull ring 45 of the arm.

In order to ensure that the connector has the locking function for unfolding use or the locking function for folding storage, as a preferred solution, the positioning lock groove a of this embodiment can be at least two according to the actual situation, and the positioning lock groove a is used with a limiting member or a pull rod 41 The shape of the end of the two positioning lock grooves a on the peripheral wall of the pivot shaft portion 11 is dislocation distributed in a manner that the included angle is not greater than 90 degrees (can be understood as: two positioning lock grooves The angle between the two planes formed by the central line of a and the central axis of the pivot shaft 11 is not greater than 90 degrees).

At the same time, based on the functional role of the limiter and the selection and setting of the structural form, it can create conditions for maximizing the structural form and use of the entire connector, specifically:

1. The limiting member can adopt a strip-shaped block structure (ie: the pin block 42 shown in Figures 3 and 4 is equivalent to the limiting member), and the pin block 42 is formed on the draw rod in a manner perpendicular to the draw rod 41. 41, thereby forming the shaft connector of the first embodiment, namely: the pin block 42 is arranged at the end of the pull rod 41 in a manner distributed adjacent to the pivot shaft 11, the spring 43 is sleeved on the pull rod 41, and the spring 43 One end abuts against the pin block 42, the other end abuts against the groove wall of the receiving groove 44, and the end of the pull rod 41 is distributed through the receiving groove 44. Thus, using the elastic effect of the spring 44, the operator can pull the lever 41 outward to disengage the pin block 42 from the corresponding positioning lock groove a (at this time, the spring 43 is in a compressed state), and when the second connecting member 20 is opposite to After the first connecting member 10 is turned over to a predetermined angle, loosening the pull rod 41 enables the pin block 42 to automatically fit into the corresponding positioning lock groove a under the elastic force of the spring 43. Of course, in order to ensure the aligning and fitting relationship between the limiting piece (ie: pin block 42) and the positioning lock groove a, so as to achieve stable locking of the relative positions of the two connecting pieces, this pin is used in the elastic lock pin 40 When the structure of the block 42 is a limiting member, the positioning lock groove a is preferably at least two, and the positioning lock groove a is a groove structure that matches the contour shape of the pin block 42 and is relative to the pivot shaft 11 The angle between the central axis of the two positioning lock grooves a is not greater than 90 degrees.

2. The limiting member can adopt a ring-shaped convex structure (ie: the limiting convex ring 46 as shown in FIG. 14 is equivalent to the limiting member), and the limiting convex ring 46 is coaxially distributed with the tie rod 41 It is formed at the end of the pull rod 41 to form the shaft connector of the second embodiment, that is, the spring 43 is sleeved on the pull rod 41, one end of the spring 43 abuts against the limiting convex ring 46, and the other end is against the receiving cavity 44 The wall of the groove abuts against each other, and the end of the pull rod 41 is fitted into the positioning lock groove a. Therefore, through the design of the structural form of the tie rod 41, the end of the tie rod 41 can be used directly as a locking member that matches with the positioning lock groove a; the elastic pin 40 is in the position limit using the structure of the limit protrusion 46 It is better to have at least two positioning lock grooves a, and the positioning lock groove a is a hole-shaped groove structure that matches the profile shape of the end of the pull rod 41, and, relative to the central axis of the pivot shaft 11, two The angle between the central axes of the positioning lock grooves a is not greater than 90 degrees.

3. The limiting member can also adopt the structural form shown in Figure 10 and Figure 11 to form the shaft connector of the third embodiment. Specifically, the structure of the pivot shaft portion 11 is improved to include a structure for pivoting The pin shaft 30 penetrates the distributed sleeve section 111 and the oblique half-ring section 112 formed at both ends of the shaft sleeve section 111 in the axial direction. The positioning lock groove a is provided on the outer peripheral wall of the sleeve section 111 and along its axis. Distributed in the direction, and the oblique half-ring section 112 abuts against the longitudinal arm of the connecting ear 21 on the symmetrical side; at the same time, the limiter is arranged in the following structure to include an outer circumference attached to the sleeve section 111 The arc-shaped strip plate portion 47 formed on the wall and at the end of the tie rod 41 and the fan-shaped ring plate portion 48 formed at both ends of the arc-shaped strip plate portion 47 in the axial direction and opposed to the end surface of the oblique half-ring section 112, The spring 43 is clamped between the curved strip plate portion 47 and the groove wall of the receiving groove cavity 44, so that the fan-shaped ring plate portion 48 is clamped between the sleeve section 111 and the longitudinal arm of the connecting ear 21 on the corresponding side. Therefore, the sleeve section 111 can be used as the main sleeve part of the pivot pin 30, and the fan-shaped ring plate portion 48 and the corresponding oblique half-ring section 112 can be used to clamp or align the pivot pin 30 on the shaft. The parts on both sides of the sleeve section 111; when the user pulls the lever 41 outwards, the arc-shaped strip plate portion 47 is disengaged from the positioning lock groove a (at this time, the fan-shaped ring plate portion 48 is synchronously driven along the radial direction of the pivot pin 30 The direction away from the inclined half-ring section 112), in the process of relatively turning the two connecting pieces, the curved strip section 47 will be attached to the outer peripheral wall of the sleeve section 111 to move in a sliding position, and after the pull rod is released, that is The elastic force release effect of the spring 43 and the arc surface fitting relationship between the arc surface strip plate portion 47 and the outer peripheral wall of the sleeve section 111 can be used. The entire limit piece is firmly pressed against the sleeve section 111, thereby realizing the two The relative position of the connecting piece is locked (of course, the positioning lock groove a can also be two to realize the locking function of unfolding use or the locking function of folding storage); at the same time, 112 pairs of inclined semi-ring segments can be used in this process The abutting action of the sector-shaped ring plate portion 48 prevents the problem of excessive rotation between the two connecting members.

In order to ensure that the connector can be applied to folding articles of different structures, in order to maximize the structure of the connector, the specifics are as follows:

1. Based on the structure of the shaft connector of the specific embodiment 1 to the specific embodiment 3, one of the assembly and use modes can be formed by optimizing and improving the structure of the connector, as shown in 1 to 4 and 8 to 11, That is, the positioning shaft portion 12 is formed by horizontally extending the peripheral side of the pivot shaft portion 11 (it can be understood that the entire first connecting member 10 is similar to a flat structure), and is located on the positioning shaft portion 12 The opposite end side of the pivot shaft portion 11 is provided with a bearing sleeve hole b whose central axis is perpendicular to the central axis of the pivot shaft portion 11, and the adapter plate portion 22 is perpendicular or approximately perpendicular to the longitudinal arm connecting the ear portion 21 (can It is understood that the entire second connecting member 20 is similar to an "L"-shaped folded plate structure). Therefore, the positioning shaft plate portion 12 can be used to connect one of the folding parts. Through the bearing sleeve hole b and the shaft provided on the folding part, the first connecting part 10 can drive the second connecting part 20 to be fixed in the horizontal plane. Angle rotation movement; and the connecting plate 22 can be used to connect another folding piece. When two folding pieces need to be folded and stored, only the operation of the elastic lock pin 40 and the function of the pivot pin 30 are required. That is to say, the second connecting piece 10 can drive its corresponding folding piece to perform a flip and folding operation relative to the first connecting piece 10 or the folding piece corresponding to the first connecting piece 10, because the second connecting piece 20 adopts an L-shaped In the structural form, after folding, the connecting plate portion 20 will overlap the first connecting member 10, thereby providing conditions for shrinking the folded volume of the folded article, reducing its occupied space, and enhancing its portability.

Based on the above-mentioned connector structure, as shown in Figures 5 to 6, this embodiment also provides a folding moped; it includes a front wheel handlebar assembly A, a rear wheel pedal assembly B, and a shaft connector. The shaft is connected The device uses the above-mentioned shaft connector as shown in Figure 1; wherein, at the center of the bottom end of the front wheel handlebar assembly A, a steering shaft A1 inserted into the bearing sleeve hole b is provided, and the rear wheel pedal assembly B The front end is installed on the connecting plate 22. Thus, by adopting the above-mentioned shaft connector and using the structural relationship between the bearing sleeve hole b and the steering shaft rod A1, the front wheel handlebar assembly A can be in a horizontal plane relative to the rear wheel pedal assembly B and the shaft connector. Rotate at a certain angle to realize actions such as steering; and the rear wheel pedal assembly B can perform functions such as turning, folding, locking, and unfolding, locking under the action of the shaft connector. Of course, the moped in this embodiment includes, but is not limited to, non-electric scooters, children's toy vehicles, electric scooters, and elderly mopeds.

Based on the above-mentioned foldable moped with a hinge connector, its application range can be expanded by expanding its functions. As shown in FIG. 7, this embodiment also provides a foldable luggage, which includes a luggage body C and the above-mentioned folding power-assisted vehicle; the luggage body C is hung and locked on the body of the front wheel handlebar assembly B. Therefore, by combining traditional structures such as suitcases or various backpacks, luggage bags, etc. with a folding booster, a device similar to a vehicle transportation tool can be formed, and the user does not need to carry or lift the luggage to achieve The carrying and conveying of the luggage greatly saves the user's physical strength, and because the moped can be folded and stored, the folded volume of the entire luggage is small, and the occupied space is small, which is convenient for folding and storing.

Of course, in order to minimize the folding volume and reduce the occupied space for folding articles such as power-assisted bicycles after being folded, based on the aforementioned structure of the shaft connector, it can be on the connecting plate 22 and located at the connecting ear 21 The opposite end side is provided with a mounting plate 23 that is opposite to the direction of the longitudinal arm of the connecting ear 21, so that the second connecting piece 20 presents a Z-shaped structural form, which can directly connect the rear wheel of a moped The pedal assembly B is installed on the mounting plate portion 23, so as to provide space for the wheels in the rear-wheel pedal assembly B to contact the ground, thereby ensuring that the entire rear-wheel pedal assembly B can be in a horizontal state when the bicycle is in use. Finally, the stability of the operator's standing is guaranteed.

2. By expanding the structure of the shaft connector of the specific embodiment 1 to the specific embodiment 3, the structure shown in FIGS. 12 to 14 can also be formed, that is, the positioning shaft plate portion 12 is surrounded by the pivot shaft portion 11 The side is formed after being vertically extended (it can be understood that the entire first connecting piece 10 is similar to an L-shaped folded plate-like structure). A central axis is provided on the positioning shaft plate portion 12 and at the opposite end side of the pivot shaft portion 11 The first gear plate 13 is perpendicular to the central axis of the pivot shaft 11; at the same time, the shaft connector also includes a third connector 50 that is perpendicular to the positioning shaft plate 12 and is a plate-shaped structure as a whole. At the end of the third connecting member 50 is provided a second chainring 51 engaged with the first chainring 13 (that is, the structure formed by the second chainring 51 and the third connecting member 50 is similar to L Shaped structure), on the third connecting member 50 and located at the opposite end side of the second toothed disk 51, there is a bearing sleeve hole b with a central axis and the central axis of the second toothed disk 51 arranged perpendicular to each other; and the adapter plate The portion 22 is perpendicular or approximately perpendicular to the longitudinal arm connecting the ear portion 21. Thus, by using the meshing and relative rotation relationship between the first chainring 13 and the second chainring 51, the second connecting member 20 and the first connecting member 10 can be simultaneously rotated or positioned relative to the third connecting member 50 The locking operation, such as folding and storing the shaft connector, can be performed in advance through the overall rotation operation of the second connecting piece 20 and the first connecting piece 10 (rotation in the XY axis plane as shown in Figure 5). At the same time, it rotates to above the third connecting member 50, and then through the operation of the elastic lock pin 40 and the action of the pivot pin 30, the second connecting member 10 is turned over the first connecting member 10 and the third connecting member 50. Above (rotating in the YZ axis plane in Figure 5), the hinge connector can be folded and stored; the reverse operation can unfold the hinge connector. In the specific application of the shaft connector of this embodiment, the third connecting piece 50 may be used to connect one of the folding pieces, and the connecting plate portion 22 may be used to connect the other folding piece, through the bearing sleeve hole b and the folding piece provided on this folding piece. The shaft enables the third connecting piece 50 to pass through the first connecting piece 10, the second connecting piece 20, and the folding piece connected to the second connecting piece 20, while the folding piece corresponding to the third connecting piece 50 is shown in FIG. Make a certain angle of rotation movement (such as steering movement) in the XZ plane; when the hinge connector or folded article is folded, stored or unfolded, it can be carried out according to the above-mentioned operating principle of the hinge connector.

Of course, in order to facilitate the operator to adjust or lock the relative position of the two chainrings, the rotary shaft connector of this embodiment further includes a threaded locking rod 60, and a threaded locking groove 52 is opened in the central area of the second chainring 51 ( Of course, it can also adopt the structure of an internal threaded through hole), in the central area of the first gear plate 13, there is a threaded lock hole 14 distributed coaxially with the threaded lock groove 52, and the end of the threaded lock rod 60 penetrates After the screw lock hole 14, it is locked in the screw lock groove 52. Thus, the threaded locking rod 60 can be used to achieve the locking and positioning between the first connecting piece 10 and the third connecting piece 50, and the elastic lock pin 40 is used to connect the second connecting piece 20 and the first connecting piece 10 Locking and positioning between.

Based on the structural form of the shaft connector shown in Figures 12 to 14, as shown in Figures 15 and 16, this embodiment also provides a folding moped, which includes a front wheel handlebar assembly A and a rear wheel pedal assembly B and the shaft connector, the shaft connector adopts the above-mentioned shaft connector as shown in Figure 5; wherein, at the center of the bottom end of the front wheel handlebar assembly A, a steering shaft inserted into the bearing sleeve hole b is provided The rod A1 and the front end of the rear wheel pedal assembly B are mounted on the connecting plate 22. Thus, by adopting the above-mentioned shaft connector and using the structural relationship between the bearing sleeve hole b and the steering shaft rod A1, the front wheel handlebar assembly A can be in a horizontal plane relative to the rear wheel pedal assembly B and the shaft connector. (That is, in the XZ plane in Figure 5) rotate at a certain angle to achieve actions such as steering; and the rear wheel pedal assembly B can perform flip, folding, locking, and unfolding and locking functions under the action of the shaft connector. Of course, the moped in this embodiment includes, but is not limited to, non-electric scooters, children's toy vehicles, electric scooters, and elderly mopeds.

Based on the moped shown in Figs. 15 and 16, as shown in Fig. 17, this embodiment also provides a foldable luggage, which includes a luggage body C and the above-mentioned foldable moped; the luggage body C is mounted and locked Fixed on the main body of the front wheel handlebar assembly A.

Industrial applicability

The above are only preferred embodiments of the present invention, and do not limit the scope of the present invention. Any equivalent structure or equivalent process transformation made by using the content of the description and drawings of the present invention, or directly or indirectly applied to other related The technical field is similarly included in the scope of patent protection of the present invention.

Claims

A shaft connector, which is characterized in that it includes:

A first connecting piece, the first connecting piece comprising a pivot shaft portion and a positioning shaft plate portion formed on a peripheral side of the pivot shaft portion;

The second connecting piece, the second connecting piece includes a connecting ear with a U-like overall shape and an adapter plate formed on the transverse arm of the connecting ear, and the pivot shaft is clamped to the connecting ear Between the two longitudinal arms of the, and through the pivot pin and the connecting ear for rotation connection;

The elastic lock pin is installed on the transverse arm connecting the ear portion, and the outer peripheral wall of the pivot shaft portion is provided with a positioning lock groove for the end of the elastic lock pin to align and fit.
The hinge connector according to claim 1, wherein the elastic lock pin includes a pull rod that penetrates the transverse arm of the connecting ear and is distributed in parallel or approximately parallel to the longitudinal arm of the connecting ear. , A limiter formed at the end of the pull rod and located in the transverse arm connecting the ear, and a set on the pull rod and located in the transverse arm connecting the ear or at least two side by side in the axial direction of the pivot shaft The springs arranged on both sides of the pull rod and located in the transverse arms connecting the ears, the transverse arms connecting the ears are provided with a receiving groove cavity for accommodating the spring, one end of the spring abuts against the limiting member, The other end abuts against the groove wall of the receiving groove cavity, and the end of the pull rod or the limiting member is fitted into the positioning lock groove.
The shaft connector according to claim 2, wherein there are at least two positioning lock grooves, and the positioning lock grooves are in conformity with the contour shape of the end of the pull rod or the contour shape of the limiting member The groove body structure is matched, and the two positioning lock grooves are distributed in a staggered manner on the peripheral wall of the pivot shaft portion in a manner that the included angle is not greater than 90 degrees.
The shaft connector of claim 2, wherein the limiting member is a ring-shaped protruding structure that is distributed coaxially with the pull rod and is formed at the end of the pull rod or is a ring formed on the pull rod The end of the rod is a bar-shaped block structure distributed perpendicularly to the central axis of the pull rod.
The shaft connector according to claim 2, wherein the pivot shaft portion includes a shaft sleeve section through which the pivot pin is distributed, and obliques formed at both ends of the shaft sleeve section in the axial direction. A half-ring section, the positioning lock groove is located on the outer peripheral wall of the sleeve section, and the inclined half-ring section abuts against the longitudinal arm of the connecting ear on the corresponding side;

The limiting member includes a curved strip plate portion attached to the outer peripheral wall of the sleeve section and formed at the end of the tie rod, and formed at both ends of the curved strip plate portion in the axial direction and is connected to the oblique half ring segment The end faces of the fan-shaped ring plate portion opposite to each other, the fan-shaped ring plate portion is clamped between the longitudinal arm of the connecting ear portion on the corresponding side and the sleeve section, and the spring is clamped between the curved strip plate portion and the receiving groove cavity Between the groove walls.
The shaft connector according to any one of claims 1-5, wherein the positioning shaft plate portion is formed by horizontally extending the peripheral side of the pivot shaft portion, and the positioning shaft plate portion is The opposite end side of the pivot shaft part is provided with a bearing sleeve hole whose central axis and the central axis of the pivot shaft part are perpendicular to each other, and the connecting plate part is perpendicular or nearly perpendicular to the longitudinal arm connecting the ear part.
The hinge connector according to claim 6, wherein the connecting plate portion and the opposite end side of the connecting ear portion are provided with a mounting plate that is opposite to the direction of the longitudinal arm of the connecting ear portion. unit.
5. A shaft connector according to any one of claims 1-5, wherein the positioning shaft plate portion is formed by vertically extending the peripheral side of the pivot shaft portion, and the positioning shaft plate portion On the upper side and located at the opposite end side of the pivot shaft part, there is provided a first gear plate with a central axis and the central axis of the pivot shaft part perpendicular to each other;

It also includes a third connecting piece that is perpendicular to the positioning shaft plate and is a plate-shaped structure as a whole. The end of the third connecting piece is provided with a second toothed disk that engages with the first toothed disk, so On the third connecting piece and on the opposite end side of the second gear plate, there is opened a bearing sleeve hole whose central axis and the central axis of the second gear plate are perpendicular to each other; the connecting plate part is opposite to the longitudinal arm connecting the ear part Vertical or nearly vertical.
A shaft connector according to claim 8, characterized in that it further comprises a threaded locking rod, a threaded locking groove is opened in the central area of the second chainring, and the central area of the first chainring is opened There is a threaded locking hole distributed coaxially with the threaded locking groove, and the end of the threaded locking rod penetrates the threaded locking hole and is locked in the threaded locking groove.
A folding power-assisted bicycle, characterized in that it comprises a front-wheel handlebar assembly, a rear-wheel pedal assembly and a shaft connector, the shaft connector adopts a shaft connector according to claim 6 or 8; A steering shaft inserted in the bearing sleeve hole is arranged at the center of the bottom end of the front wheel handlebar assembly, and the front end of the rear wheel pedal assembly is installed on the connecting plate part.