Head tube rotating storage structure and golf cart

Abstract

The utility model belongs to the technical field of golf carts, and discloses a head tube rotating storage structure and a golf cart. The head tube includes a first tube body and a second tube body, one end of the first tube body is connected to a front fork, the other end of the first tube body is provided with an extension part, the second tube body is sleeved on the extension part and fixed to the frame, the first tube body can rotate relative to the second tube body, a locking part is provided on the outer wall of the first tube body, a locking piece is provided on the locking part, and at least two positioning parts that cooperate with the locking piece to limit the rotation of the first tube body are provided on the second tube body, and the two positioning parts are located on the same circumference and distributed at a set angle. The head tube rotating storage structure not only ensures the original axial bearing capacity of the head tube, but also reduces the wheelbase and the storage volume. The golf cart adopting the head tube rotating storage structure has the function of changing the position of the front wheels, which can effectively reduce the volume of the golf cart and ensure the bearing capacity of the golf cart, and provides a new design idea for the golf cart structure.

Description

Technical Field

[0001] The utility model relates to the technical field of golf carts, in particular to a head pipe rotating storage structure and a golf cart. Background Art

[0002] Golf carts are special vehicles for carrying and transporting golf courses, which are convenient for people to transfer between courses and transport golf bags in a wide golf course. Two-wheeled golf carts are light and flexible, but considering the convenience of carrying and using, it is hoped that they have a folding storage function to further reduce the size of the golf cart. The core idea of ​​reducing the size is to reduce the distance between the two wheels.

[0003] At present, folding structures such as bicycles and scooters are more common, but foldable golf carts are rare. In addition, golf carts need to carry golf bags, which requires a high load-bearing capacity. Some foldable structures often have poor load-bearing capacity. Therefore, when designing the golf cart structure, in addition to considering the storage function, it must also have sufficient structural strength, which increases the design difficulty. Utility Model Content

[0004] Based on the above problems, one purpose of the utility model is to provide a head pipe rotation storage structure, which can modify the design of the head pipe of a vehicle body to achieve a transformable shape and reduce the volume while ensuring the strength of the vehicle body.

[0005] Another object of the utility model is to provide a golf cart with a head pipe rotation and storage function, thereby effectively reducing the size of the golf cart.

[0006] In order to achieve the above-mentioned purpose, on the one hand, the utility model adopts the following technical solutions:

[0007] A head tube rotation storage structure, the head tube is used to connect a frame and a front fork, wherein the head tube includes a first tube body and a second tube body, one end of the first tube body is connected to the front fork, the other end of the first tube body is provided with an extension portion, the second tube body is sleeved on the extension portion and fixed to the frame, the first tube body can rotate relative to the second tube body, a locking portion is provided on the outer wall of the first tube body, a locking piece is provided on the locking portion, and at least two positioning portions are provided on the second tube body to cooperate with the locking piece to limit the rotation of the first tube body, and the two positioning portions are located on the same circumference and distributed at a set angle.

[0008] As an optional solution, the locking piece is a pin, and the locking part is provided with a mounting hole for installing the pin. The pin can move axially in the mounting hole, and the positioning part is provided with a positioning hole for the pin to extend into. When the pin is not extended into the positioning hole, the first tube body can rotate freely; when the pin is extended into the positioning hole, the first tube body is locked.

[0009] As an optional scheme, a first step is provided on the pin, a second step is provided on the mounting hole, a first spring is sleeved on the pin, one end of the first spring abuts against the first step, and the other end of the first spring abuts against the second step, the first spring applies a force to the pin toward the positioning portion, the diameter of the end of the pin away from the positioning portion is smaller than the diameter of the end close to the positioning portion, and a limiting bolt is provided at the end away from the positioning portion, and the bolt head diameter of the limiting bolt is larger than the hole diameter of the mounting hole.

[0010] As an optional solution, a button is provided at the end of the positioning hole opposite to the insertion end of the pin, and the button is used to make the pin withdraw from the positioning hole. A limit pin is provided on the positioning portion and crosses the button. The button is provided with a travel groove for the limit pin to pass through. A second spring is provided in the travel groove, one end of the second spring abuts against the limit pin, and the other end of the second spring abuts against one end of the travel groove. The second spring applies a force to the limit pin to turn away from the pin.

[0011] As an optional solution, a concave surface is provided at the opening of the positioning hole to facilitate the pin to extend into or exit the positioning hole.

[0012] As an optional solution, a locking portion is also provided on the second tube body, a snap-on wrench is provided on the locking portion, and a snap-on portion cooperating with the snap-on wrench is provided on the first tube body. When the snap-on wrench is snapped with the snap-on portion, the first tube body and the second tube body are fixed as one.

[0013] As an optional solution, the two positioning portions are symmetrically distributed on both sides of the second tube body, and the set angle is 180°. When the locking piece switches from cooperating with one positioning portion to cooperating with the other positioning portion, the position of the front fork switches from being directly in front of the head tube to being directly behind the head tube, or from being directly behind the head tube to being directly in front of the head tube.

[0014] As an optional solution, bearings are respectively provided at both ends of the second tube body, the extension part is assembled with the second tube body through the bearings, and a locking bolt threadedly connected to the end of the extension part is provided at the bearing away from the first tube body.

[0015] The beneficial effects of the utility model are as follows: the head pipe rotating storage structure is designed with a head pipe having a relatively rotating part, which is different from the common folding structure. The rotating structure not only ensures the original axial bearing capacity of the head pipe, but also reduces the wheelbase and the storage volume, and is easy to use.

[0016] On the other hand, the utility model adopts the following technical solutions:

[0017] A golf cart comprises a frame, a front fork and a head pipe, wherein the head pipe adopts the head pipe rotating storage structure, when the first tube body of the head pipe rotates relative to the second tube body at a set angle, the front fork rotates with the first tube body.

[0018] As an optional solution, a pedal is provided on the frame, and a front wheel is provided on the front fork, with a set angle of 180°. The front wheel can be stored above the pedal from a normal use position as the first tube rotates.

[0019] The beneficial effects of the utility model are as follows: the golf cart adopting the head tube rotating storage structure has the function of changing the position of the front wheels, which can effectively reduce the storage volume of the golf cart and ensure the carrying capacity of the golf cart, thus providing a new design idea for the golf cart structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the head pipe rotation storage structure provided by an embodiment of the utility model;

[0021] Figure 2 It is an exploded view of the head pipe rotation storage structure provided by an embodiment of the utility model;

[0022] Figure 3 This is a cross-sectional view of the head tube rotation storage structure provided by the embodiment of the utility model Figure 1 ;

[0023] Figure 4 This is a cross-sectional view of the head tube rotation storage structure provided by the embodiment of the utility model Figure 2 ;

[0024] Figure 5 is a schematic diagram of a golf cart provided by an embodiment of the utility model in a normal use state;

[0025] Figure 6 It is a schematic diagram of the front wheels of the golf cart provided by the embodiment of the utility model in the stowed state.

[0026] In the attached figure:

[0027] 1. head pipe; 11. first tube body; 111. extension part; 112. locking part; 1121. mounting hole; 113. pin; 1131. first step; 114. first spring; 115. limit bolt; 116. buckle part; 117. locking bolt; 12. second tube body; 121. positioning part; 1211. positioning hole; 1212. concave surface; 122. button; 1221. travel groove; 1222. screw plug; 123. limit pin; 124. second spring; 125. locking part; 126. buckle wrench; 127. bearing; 2. front fork; 3. pedal; 4. front wheel. DETAILED DESCRIPTION

[0028] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only the parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0029] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0031] In the description of this embodiment, the terms "upper", "lower", "left", "right" and other directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplified operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0032] See also Figures 1 to 4As shown, the preferred embodiment provides a head tube rotation storage structure, the head tube 1 is used to connect the frame and the front fork 2, wherein the head tube 1 includes a first tube body 11 and a second tube body 12, one end of the first tube body 11 is connected to the front fork 2, the other end of the first tube body 11 is provided with an extension portion 111, the second tube body 12 is sleeved on the extension portion 111 and fixed to the frame, the first tube body 11 can rotate relative to the second tube body 12, a locking portion 112 is provided on the outer wall of the first tube body 11, a locking piece is provided on the locking portion 112, and at least two positioning portions 121 cooperating with the locking piece to limit the rotation of the first tube body 11 are provided on the second tube body 12, and the two positioning portions 121 are located on the same circumference and distributed at a set angle.

[0033] The extension part 111 is integrally forged with the first tube body 11 to ensure sufficient connection strength. In addition, in order to meet the modeling requirements and facilitate the molding of the first tube body 11, the first tube body 11 can also be welded and assembled by multiple sections of tubes.

[0034] Therefore, the head tube rotating storage structure is designed with a head tube 1 having a relatively rotating part, and the relatively rotating part is the first tube body 11 and the second tube body 12. Different from the common folding structure, the rotating structure not only ensures the original axial bearing capacity of the head tube 1, but also can reduce the wheelbase and the storage volume, which is easy to use.

[0035] Specifically, the locking member here is a pin 113, and a mounting hole 1121 for mounting the pin 113 is provided on the locking portion 112, and the pin 113 can move axially in the mounting hole 1121, and a positioning hole 1211 for the pin 113 to extend into is provided on the positioning portion 121, and when the pin 113 does not extend into the positioning hole 1211, the first tube body 11 can rotate freely; when the pin 113 extends into the positioning hole 1211, the first tube body 11 is locked. Thus, the pin 113 is used to realize quick release with the positioning portion 121, which is convenient to operate and easy to adjust and lock the rotation angle of the first tube body 11.

[0036] In particular, the column pin 113 is provided with a first step 1131, the mounting hole 1121 is provided with a second step, the column pin 113 is sleeved with a first spring 114, one end of the first spring 114 abuts against the first step 1131, and the other end of the first spring 114 abuts against the second step. The first spring 114 applies force to the column pin 113 toward the positioning portion 121. The diameter of the end of the column pin 113 away from the positioning portion 121 is smaller than the diameter of the end close to the positioning portion 121, and the end of the end away from the positioning portion 121 is provided with a limiting bolt 115, and the bolt head diameter of the limiting bolt 115 is larger than the hole diameter of the mounting hole 1121. Thus, the first spring 114 applies force to the column pin 113, so that the column pin 113 is not easy to fall out of the positioning hole 1211, which is conducive to maintaining the locked state.

[0037] Furthermore, to facilitate the operation when the pin 113 needs to be removed from the positioning hole 1211, a button 122 is provided at the end of the positioning hole 1211 opposite to the insertion end of the pin 113. The button 122 is used to press the pin 113 and make the pin 113 withdraw from the positioning hole 1211. The positioning portion 121 is provided with a limit pin 123 that crosses the button 122. The button 122 is provided with a travel groove 1221 for the limit pin 123 to pass through. A second spring 124 is provided in the travel groove 1221. One end of the second spring 124 abuts against the limit pin 123, and the other end of the second spring 124 abuts against one end of the travel groove 1221. The second spring 124 gives the limit pin 123 a force away from the pin 113. Thus, by pressing the button 122 to overcome the elastic force of the second spring 124 , the pin 113 is pushed out of the positioning hole 1211 , and when the button 122 is released, the button 122 is reset due to the action of the second spring 124 , so that the pin 113 is inserted into the positioning hole 1211 again.

[0038] Furthermore, a screw plug 1222 is provided at the pressing end of the button 122 . The screw plug 1222 is screwed into one end of the travel groove 1221 and abuts against the second spring 124 . The screw plug 1222 is used to adjust the elastic force generated by the second spring 124 .

[0039] In particular, a concave surface 1212 is provided at the opening of the positioning hole 1211 to facilitate the pin 113 to extend into or withdraw from the positioning hole 1211, thereby improving the smoothness of the cooperation between the pin 113 and the positioning hole 1211 and avoiding jamming.

[0040] In order to further strengthen the structural strength of the head pipe 1 in normal use, a locking portion 125 is further provided on the second tube body 12, and a snap wrench 126 is provided on the locking portion 125. A snap portion 116 cooperating with the snap wrench 126 is provided on the first tube body 11. When the snap wrench 126 is engaged with the snap portion 116, the first tube body 11 and the second tube body 12 are fixed as a whole.

[0041] Optionally, taking two postures as an example, the two positioning portions 121 are symmetrically distributed on both sides of the second tube body 12, and the set angle is 180°. When the locking piece switches from cooperating with one positioning portion 121 to cooperating with another positioning portion 121, the position of the front fork 2 switches from being directly in front of the head tube 1 to being directly behind the head tube 1, or from being directly behind the head tube 1 to being directly in front of the head tube 1.

[0042] Specifically, bearings 127 are respectively provided at both ends of the second tube body 12, the extension portion 111 is assembled with the second tube body 12 through the bearings 127, and a locking bolt 117 threadedly connected to the end of the extension portion 111 is provided at the bearing 127 away from the first tube body 11, thereby ensuring reliable axial assembly of the first tube body 11 and the second tube body 12.

[0043] On this basis, this embodiment also provides a golf cart, such as Figure 5 As shown, it includes a frame, a front fork 2 and a head pipe 1, wherein the head pipe 1 adopts the above-mentioned head pipe rotation storage structure, when the first tube body 11 of the head pipe 1 rotates relative to the second tube body 12 at a set angle, the front fork 2 rotates with the first tube body 11.

[0044] Optionally, a pedal 3 is provided on the frame, and a front wheel 4 is provided on the front fork 2, and the setting angle is 180°. The front wheel 4 can be stored above the pedal 3 from the normal use position as the first tube 11 rotates. Figure 6 Therefore, in the above storage state, the handlebars can be folded to effectively reduce the volume of the entire vehicle. The handlebar folding is a prior art and will not be described in detail here.

[0045] In summary, the golf cart adopting the above-mentioned head tube rotating storage structure has the function of changing the positions of the four front wheels, which can effectively reduce the volume of the golf cart and ensure the carrying capacity of the golf cart. It has a simple and reliable structure and is easy to store and operate, providing a new design idea for the golf cart structure.

[0046] In addition, the head tube rotating storage structure is not only applicable to the above-mentioned golf cart models, but also to other models.

[0047] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the scope of protection of the present invention. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention shall be included in the scope of protection of the claims of the present invention.

Claims

1. A head tube rotating storage structure, wherein the head tube (1) is used to connect a bicycle frame and a front fork (2), and is characterized in that: The head tube (1) comprises a first tube body (11) and a second tube body (12); one end of the first tube body (11) is connected to the front fork (2); the other end of the first tube body (11) is provided with an extension portion (111); the second tube body (12) is sleeved on the extension portion (111) and fixed to the frame; the first tube body (11) can rotate relative to the second tube body (12); a locking portion (112) is provided on the outer wall of the first tube body (11); a locking piece is provided on the locking portion (112); the second tube body (12) is provided with at least two positioning portions (121) which cooperate with the locking piece to limit the rotation of the first tube body (11); the two positioning portions (121) are located on the same circumference and are distributed at a set angle.

2. The head tube rotation storage structure according to claim 1, characterized in that: The locking member is a pin (113); the locking portion (112) is provided with a mounting hole (1121) for mounting the pin (113); the pin (113) can move axially in the mounting hole (1121); the positioning portion (121) is provided with a positioning hole (1211) for the pin (113) to extend into; when the pin (113) does not extend into the positioning hole (1211), the first tube body (11) can rotate freely; when the pin (113) extends into the positioning hole (1211), the first tube body (11) is locked.

3. The head tube rotation storage structure according to claim 2, characterized in that: The column pin (113) is provided with a first step (1131), and the mounting hole (1121) is provided with a second step. The column pin (113) is sleeved with a first spring (114), one end of the first spring (114) abuts against the first step (1131), and the other end of the first spring (114) abuts against the second step. The first spring (114) applies a force to the column pin (113) toward the positioning portion (121). The diameter of the end of the column pin (113) away from the positioning portion (121) is smaller than the diameter of the end close to the positioning portion (121), and a limiting bolt (115) is provided at the end away from the positioning portion (121), and the bolt head diameter of the limiting bolt (115) is larger than the hole diameter of the mounting hole (1121).

4. The head tube rotation storage structure according to claim 2, characterized in that: A button (122) is provided at the end of the positioning hole (1211) opposite to the end into which the pin (113) is inserted, and the button (122) is used to make the pin (113) withdraw from the positioning hole (1211); a limit pin (123) is provided on the positioning portion (121) and crosses the button (122); a travel groove (1221) is provided on the button (122) for the limit pin (123) to pass through; a second spring (124) is provided in the travel groove (1221); one end of the second spring (124) abuts against the limit pin (123), and the other end of the second spring (124) abuts against one end of the travel groove (1221); the second spring (124) applies a force to the limit pin (123) to move away from the pin (113).

5. The head tube rotation storage structure according to claim 2, characterized in that: A concave surface (1212) is provided at the opening of the positioning hole (1211) to facilitate the pin (113) to extend into or exit from the positioning hole (1211).

6. The head pipe rotation storage structure according to claim 1, characterized in that: The second tube body (12) is also provided with a locking portion (125), and a snap-on spanner (126) is provided on the locking portion (125). The first tube body (11) is provided with a snap-on portion (116) that cooperates with the snap-on spanner (126). When the snap-on spanner (126) is snapped with the snap-on portion (116), the first tube body (11) and the second tube body (12) are fixed as a whole.

7. The head pipe rotation storage structure according to claim 1, characterized in that: The two positioning portions (121) are symmetrically distributed on both sides of the second tube body (12), and the set angle is 180 degrees. When the locking member switches from cooperating with one positioning portion (121) to cooperating with the other positioning portion (121), the position of the front fork (2) switches from being directly in front of the head tube (1) to being directly behind the head tube (1), or from being directly behind the head tube (1) to being directly in front of the head tube (1).

8. The head pipe rotation storage structure according to claim 1, characterized in that: Bearings (127) are respectively provided at both ends of the second tube body (12); the extension portion (111) is assembled with the second tube body (12) via the bearings (127); and a locking bolt (117) threadedly connected to the end of the extension portion (111) is provided at the bearing (127) away from the first tube body (11).

9. A golf cart, comprising a frame, a front fork (2) and a head tube (1), characterized in that: The head tube (1) adopts the head tube rotation storage structure according to any one of claims 1 to 8, and when the first tube body (11) of the head tube (1) rotates at a set angle relative to the second tube body (12), the front fork (2) rotates along with the first tube body (11).

10. The golf cart according to claim 9, wherein: The frame is provided with a pedal (3), the front fork (2) is provided with a front wheel (4), the set angle is 180°, and the front wheel (4) can be stored from a normal use position to above the pedal (3) as the first tube (11) rotates.

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