Connecting structure, oil brake system and vehicle

Abstract

The utility model belongs to the technical field of vehicles, and discloses a connecting structure, an oil brake system and a vehicle. The connecting structure comprises a first connecting unit and a second connecting unit which are detachably connected, the first connecting unit comprises a first main body and a first valve body, a first oil hole is formed in the first main body, and the first valve body is elastically arranged in an inner cavity of the first main body and can block the first oil hole; the second connecting unit comprises a second main body, a second valve body and an abutting piece, the second valve body is elastically arranged in an inner cavity of the second main body, the second valve body is provided with a second oil hole, and the abutting piece is fixedly arranged on the second main body, penetrates through the second main body and can block the second oil hole. When the connecting structure is connected, the first main body pushes the second valve body, so that the pushing piece extends out of the second valve body to push the first valve body; and when the connecting structure is disconnected, the first valve body and the second valve body are reset, so that liquid leakage of the first connecting unit and the second connecting unit is avoided, and the use performance is ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to vehicle technical field especially, relate to connecting structure, oil brake system and vehicle. BACKGROUND

[0002] Oil brake is the common brake mode of two-wheeled vehicle, and it has the advantages of large braking force, good braking linearity, strong adaptability and light hand feeling, and is more used in mountain bikes and road bikes. The oil brake system usually includes brake handle, oil pipe, brake cylinder and clamp, etc. The oil pipe connects the brake handle and the clamp. The oil pipe is full of hydraulic oil. In use, the hydraulic oil flow is controlled by fingers, and the hydraulic pressure is transmitted to the brake cylinder through the oil pipe, pushing the piston of the brake cylinder, and then transmitting the pressure to the clamp, achieving the purpose of braking.

[0003] In the prior art, the oil pipe is usually arranged in the frame to avoid interference with the derailleur cable and electronic device cable. However, for some vehicles that need to be folded for transportation, the frame can usually be disassembled. However, the oil pipe is usually a whole, which leads to the oil pipe being exposed after the frame is disassembled, causing friction or bumping and abrasion of the oil pipe during transportation, and thus damaging the performance of the vehicle and affecting the service life of the vehicle and the driving safety of the user.

[0004] Therefore, a connecting structure, oil brake system and vehicle are needed to solve the above problems. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a connecting structure, oil brake system and vehicle, which can connect two oil pipes. The connecting structure can be detachably connected to quickly connect or separate the two oil pipes, avoid friction, bumping and abrasion of the oil pipe when the vehicle is disassembled, improve the convenience during use, ensure the use performance of the oil brake system of the vehicle, and thus ensure the safety of the user.

[0006] To achieve this purpose, the utility model adopts the following technical solutions:

[0007] The connecting structure comprises a detachably connected first connecting unit and a second connecting unit, the first connecting unit comprises a first body and a first valve body, the first body is provided with a first oil hole, the first valve body is elastically arranged in the inner cavity of the first body and can block the first oil hole; the second connecting unit comprises a second body, a second valve body and a pushing piece, the second valve body is elastically arranged in the inner cavity of the second body, the second valve body is provided with a second oil hole, the pushing piece is fixedly arranged on the second body, and the pushing piece is arranged in the second body and can block the second oil hole; the first body can push the second valve body, so that the pushing piece pushes the first valve body after extending out of the second valve body, and then the first oil hole and the second oil hole are communicated.

[0008] As an optional technical solution, the first body is provided with a plug-in part, the second body is provided with a plug-in hole, the plug-in part can be sealingly plugged into the plug-in hole, and then the plug-in part can abut against the second valve body.

[0009] As an optional technical solution, the first body is further provided with a first containing cavity, the plug-in part is provided with a second containing cavity and the first oil hole, the first containing cavity and the second containing cavity are communicated, and are communicated with the outside through the first oil hole, the first valve body comprises a guide piece and a first blocking piece, the guide piece and the first blocking piece are fixedly connected, the guide piece is slidingly arranged in the first containing cavity, so that the first blocking piece can open or close the first oil hole.

[0010] As an optional technical solution, the first connecting unit further comprises a first plug and a first elastic piece, the first plug is sealingly connected to one end of the first body away from the second body, and the first elastic piece is arranged between the first plug and the guide piece.

[0011] As an optional technical solution, the second body is provided with a third containing cavity, the third containing cavity and the plug-in hole are communicated, the pushing piece comprises a fixed seat and a pushing rod, the fixed seat and the pushing rod are fixedly connected, the fixed seat is fixedly arranged in the third containing cavity, and the second valve body is sealingly and slidingly arranged between the third containing cavity and the plug-in hole, so that the pushing rod can open or close the second oil hole.

[0012] As an optional technical solution, the second body is provided with a boss extending along the axial direction of the second body, and the second valve body is provided with a limiting table, the boss being used for limiting the second valve body.

[0013] As an optional technical scheme, a sealing groove is arranged on an end face of the first body close to the second valve body or an end face of the second valve body close to the first body, and a sealing element is arranged in the sealing groove, which is used for sealing a gap between the first body and the second valve body when the first oil hole and the second oil hole are communicated.

[0014] As an optional technical scheme, the first body is provided with a limiting protrusion, and the second body is provided with a limiting groove, the limiting groove comprises a first connecting groove, a second connecting groove and a clamping groove, the first connecting groove extends along the axial direction of the second body, the second connecting groove extends along the circumferential direction of the second body, the clamping groove extends along the axial direction of the second body towards the first body, and the first connecting groove, the second connecting groove and the clamping groove are sequentially communicated, the limiting protrusion can slide along the first connecting groove, the second connecting groove and the clamping groove in sequence, and an end face of the clamping groove close to the first body can abut against the limiting protrusion.

[0015] The utility model discloses still adopt following technical scheme:

[0016] Oil brake system, the oil brake system includes first oil pipe, second oil pipe, brake handle and clamp, the oil brake system still includes above-mentioned connecting structure, the first end of first oil pipe is connected in brake handle, the first end of second oil pipe is connected in clamp, and the connecting structure is connected between the second end of first oil pipe and the second end of second oil pipe.

[0017] The utility model discloses still adopt following technical scheme:

[0018] Vehicle, the vehicle includes the oil brake system as described above.

[0019] The utility model discloses beneficial effect:

[0020] The utility model discloses a connecting structure for connecting two pipe lines, which comprises a first connecting unit and a second connecting unit which are detachably connected, the first connecting unit comprises a first body and a first valve body, the first body is provided with a first oil hole, the first valve body is elastically arranged in the inner cavity of the first body and can block the first oil hole, the second connecting unit comprises a second body, a second valve body and a pushing piece, the second valve body is elastically arranged in the inner cavity of the second body, the second valve body is provided with a second oil hole, the pushing piece is fixedly arranged on the second body and passes through the second body and can block the second oil hole, in actual use, when the first connecting unit and the second connecting unit are connected, the first body pushes the second valve body, the pushing piece extends out of the second valve body and can push the first valve body, so that the first oil hole of the first body and the second oil hole of the second valve body are communicated, the normal movement of liquid is ensured, when the first connecting unit and the second connecting unit are disconnected, the first valve body and the second valve body are reset, the first valve body can block the first oil hole of the first body, the pushing piece can block the second oil hole of the second valve body, so that the first connecting unit and the second connecting unit will not leak liquid and the use performance is ensured.

[0021] The utility model discloses still a kind of oil brake system, which comprises first oil pipe, second oil pipe, brake handle and clamp, and further comprises the connecting structure described above, the first end of first oil pipe is connected to brake handle, the first end of second oil pipe is connected to clamp, and the connecting structure is connected between the second end of first oil pipe and the second end of second oil pipe.This oil brake system connects the second end of first oil pipe and the second end of second oil pipe by the connecting structure described above, can ensure the normal function of oil brake system, and when needing to be maintained, first oil pipe and second oil pipe can be separated by the connecting structure conveniently, to ensure the normal maintenance.

[0022] The utility model discloses still a kind of vehicle, which comprises the oil brake system described above, and the vehicle is installed with the connecting structure described above between the two sections of oil pipe of the frame connection of vehicle by installing the oil brake system described above, and the connecting structure is separated during the process of vehicle dismounting and transporting, to ensure that first oil pipe and second oil pipe are always located inside frame, to effectively avoid the abrasion of oil pipe, and to ensure the use performance of vehicle. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 It is the structure schematic view of the connecting structure of the utility model embodiment;

[0024] Figure 2 It is the sectional view of the connecting structure of the utility model embodiment;

[0025] Figure 3 It isFigure 2 A is a local enlarged view of the middle part;

[0026] Figure 4 is Figure 2 B is a local enlarged view of the middle part;

[0027] Figure 5 is a structural schematic view of a first connecting unit of an embodiment of the utility model;

[0028] Figure 6 is a structural schematic view of a second connecting unit of an embodiment of the utility model;

[0029] Figure 7 is a sectional view of a connecting structure (sealing ring hidden) of an embodiment of the utility model;

[0030] Figure 8 is a connecting schematic view of a connecting structure of an embodiment of the utility model.

[0031] In the figure:

[0032] 10, first connecting unit; 11, first main body; 111, first oil hole; 112, plug-in part; 1121, second accommodating cavity; 1122, third sealing groove; 1123, third sealing ring; 113, first accommodating cavity; 114, limiting protrusion; 12, first valve body; 121, guide piece; 1211, shaft hole; 122, first plugging piece; 123, first sealing groove; 124, first sealing ring; 13, first plug; 131, fourth sealing groove; 132, fourth sealing ring; 14, first elastic piece;

[0033] 20, second connecting unit; 21, second main body; 211, plug-in hole; 212, third accommodating cavity; 213, boss; 214, limiting groove; 2141, first connecting groove; 2142, second connecting groove; 2143, clamping groove; 22, second valve body; 221, second oil hole; 222, limiting platform; 223, sealing groove; 224, sealing piece; 225, second sealing groove; 226, second sealing ring; 227, fifth sealing groove; 228, fifth sealing ring; 23, pushing piece; 231, fixed seat; 232, pushing rod; 24, second plug; 241, sixth sealing groove; 242, sixth sealing ring; 25, second elastic piece. DETAILED DESCRIPTION

[0034] The utility model will be further explained in detail below in combination with the drawings and embodiments. It can be understood that the specific embodiments described here are only used to explain the utility model, and not limit the utility model. In addition, it needs to be explained that in order to facilitate the description, only the part related to the utility model is shown in the drawings, not all structures.

[0035] In the description of the utility model, unless another definite provision and limitation, the term "link", "connect", "fix" should do broad sense understanding, for example, can be fixed connection, also can be detachable connection, or be integrated;Can be mechanical connection, also can be electrical connection;Can be directly connected, also can be indirectly connected through the intermediate medium, can be two elements inside the communication or two element's mutual action relation. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0036] In the utility model, unless another definite provision and limitation, the first feature is "on" or "under" the second feature can include the first and second features direct contact, also can include the first and second features are not direct contact but contact through the additional feature between them. Moreover, the first feature is "on", "above" and "on" the second feature includes the first feature is directly above and obliquely above the second feature, or just indicates that the first feature is higher than the second feature in horizontal height. The first feature is "under", "below" and "under" the second feature includes the first feature is directly below and obliquely below the second feature, or just indicates that the first feature is less than the second feature in horizontal height.

[0037] In the description of the embodiment, the terms "on", "under", "right", etc. orientation or position relationship is based on the orientation or position relationship shown in the drawing, only for the convenience of description and simplification operation, and not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore cannot be understood as a limitation on the utility model. In addition, the terms "first", "second" are only used to distinguish in the description, and have no special meaning.

[0038] As Figures 1 to 8 Shown, the embodiment provides a kind of connection structure, the connection structure includes detachably connected first connecting unit 10 and second connecting unit 20, first connecting unit 10 includes first body 11 and first valve body 12, first oil hole 111 is provided on first body 11, first valve body 12 is elastically arranged in the inner cavity of first body 11, and first oil hole 111 can be blocked;Second connecting unit 20 includes second body 21, second valve body 22 and push piece 23, second valve body 22 is elastically arranged in the inner cavity of second body 21, and second valve body 22 is provided with second oil hole 221, push piece 23 is fixedly arranged in second body 21, and push piece 23 is arranged in second body 21, and second oil hole 221 can be blocked;First body 11 can push second valve body 22, so that push piece 23 extends out of second valve body 22 and pushes first valve body 12, to make first oil hole 111 and second oil hole 221 communicate.

[0039] Specifically, in the embodiment, as Figure 2As shown, the first connecting unit 10 and the second connecting unit 20 of the connecting structure are respectively connected between two pipe sections, for connecting the two pipe sections, the first main body 11 is provided with a first oil hole 111, the first valve body 12 is elastically arranged in the inner cavity of the first main body 11, for plugging the first oil hole 111; the inner cavity of the second main body 21 is elastically provided with a second valve body 22, the second valve body 22 is provided with a second oil hole 221, the inner cavity of the second main body 21 is further fixedly provided with a pushing piece 23, the pushing piece 23 can plug the second oil hole 221 on the second valve body 22, when the first connecting unit 10 and the second connecting unit 20 are connected, the first main body 11 pushes the second valve body 22, so that the second valve body 22 retracts, the pushing piece 23 extends out of the second valve body 22, the second oil hole 221 is opened, at the same time, the pushing piece 23 extends out of the second valve body 22 and pushes the first valve body 12, the first valve body 12 retracts, and then the first oil hole 111 is opened, so that the first oil hole 111 and the second oil hole 221 are connected, the connecting structure can connect the two pipe sections. This connecting structure can not only connect the two pipe sections, but also reset the first valve body 12 and the second valve body 22 after separating the first connecting unit 10 and the second connecting unit 20, so that the first oil hole 111 is plugged by the first valve body 12 again, and the second oil hole 221 is plugged by the pushing piece 23, to ensure that the first connecting unit 10 and the second connecting unit 20 will not leak liquid, and ensure the safety in use.

[0040] Specifically, in the embodiment, as shown in Figure 3 The end of the first valve body 12 is provided with a first sealing groove 123, the end of the pushing piece 23 is provided with a second sealing groove 225, the first sealing groove 123 and the second sealing groove 225 are respectively provided with a first sealing ring 124 and a second sealing ring 226, to ensure better sealing between the first valve body 12 and the inner wall of the first oil hole 111, and between the pushing piece 23 and the inner wall of the second oil hole 221, and further ensure the use performance.

[0041] Further, please refer to Figure 5 and Figure 6, the first body 11 is provided with a plug-in part 112, and the second body 21 is provided with a plug-in hole 211, the plug-in part 112 can be sealed and plugged with the plug-in hole 211, and then the plug-in part 112 can abut against the second valve body 22. Specifically, in the embodiment, the plug-in part 112 of the first body 11 and the plug-in hole 211 of the second body 21 are sealingly plugged and matched, which can ensure that the plug-in part 112 and the plug-in hole 211 have good sealing performance when the first connecting unit 10 and the second connecting unit 20 are connected, avoid liquid leakage, ensure the use performance, and make the plug-in part 112 abut against the second valve body 22, and then push the second valve body 22, so that the pusher 23 extends from the second valve body 22 to push the first valve body 12, and ensure the connectivity of the first oil hole 111 and the second oil hole 221.

[0042] Specifically, in the embodiment, please refer to Figure 4 The outer part of the plug-in part 112 is provided with a third sealing groove 1122, and the third sealing groove 1122 is provided with a third sealing ring 1123. When the plug-in part 112 is inserted into the plug-in hole 211, the third sealing ring 1123 is located between the outer wall of the plug-in part 112 and the inner wall of the plug-in hole 211, which is used to ensure the sealing performance between the plug-in part 112 and the plug-in hole 211.

[0043] Specifically, in the embodiment, the first body 11 and the second body 21 are both cylindrical, and the outer diameter of the first body 11 and the outer diameter of the second body 21 are the same, which can make the connecting structure have good integrity, avoid the collision between the first body 11 or the second body 21 and the frame, and then ensure the use performance.

[0044] Specifically, in the embodiment, the end face of the first valve body 12 and the end face of the pusher 23 are the same shape, which can ensure that the first valve body 12 and the pusher 23 have good stability when they are pushed, and then improve the use performance.

[0045] Further, please refer to Figure 5The first body 11 is further provided with a first accommodating cavity 113, the plug-in part 112 is provided with a second accommodating cavity 1121 and a first oil hole 111, the first accommodating cavity 113 and the second accommodating cavity 1121 are communicated, and the first accommodating cavity 113 and the second accommodating cavity 1121 are communicated with the outside through the first oil hole 111. The first valve body 12 comprises a guide part 121 and a first plugging part 122, the guide part 121 and the first plugging part 122 are fixedly connected, and the guide part 121 is slidingly arranged in the first accommodating cavity 113, so that the first plugging part 122 can open or close the first oil hole 111. Specifically, in the embodiment, the first accommodating cavity 113 arranged on the first body 11 and the second accommodating cavity 1121 arranged on the plug-in part 112 are communicated to form an inner cavity of the first body 11, the inner cavity is communicated with the outside through the first oil hole 111, the first valve body 12 comprises a guide part 121 and a first plugging part 122, the guide part 121 is slidingly arranged in the first accommodating cavity 113, and the guide part 121 can ensure that the first valve body 12 has good stability during sliding, thereby ensuring that the first oil hole 111 has good stability during opening or closing.

[0046] Specifically, in the embodiment, the peripheral part of the guide part 121 is provided with a plurality of shaft holes 1211 for the flow of liquid.

[0047] Further, as shown in Figure 2 , Figure 5 and Figure 7 , the first connecting unit 10 further comprises a first plug 13 and a first elastic part 14, the first plug 13 is sealingly connected to one end of the first body 11 away from the second body 21, and the first elastic part 14 is arranged between the first plug 13 and the guide part 121. Specifically, in the embodiment, the first plug 13 is provided with external threads, one end of the first body 11 away from the second body 21 is provided with internal threads, so that the first plug 13 and the first body 11 are threadedly connected, the first elastic part 14 is a first spring, the first spring is arranged between the first plug 13 and the guide part 121, and the first spring is always in a compressed state, so that the guide part 121 always tends to move towards the first oil hole 111, thereby ensuring that the first valve body 12 can reset when the first connecting unit 10 and the second connecting unit 20 are separated, thereby ensuring that liquid cannot leak at the first oil hole 111.

[0048] Specifically, in the embodiment, as shown in Figure 7 , the first plug 13 is provided with a first recess, the first body 11 is provided with a second recess, and the first recess and the second recess are cooperatively arranged to form a fourth sealing groove 131 when the first plug 13 and the first body 11 are connected. The fourth sealing groove 131 is provided with a fourth sealing ring 132 for sealing the gap between the first plug 13 and the first body 11.

[0049] Specifically, in the embodiment, as shown inFigure 5 and Figure 7 The first plug 13 is further provided with an abutting table capable of abutting with the end face of the first body 11, for ensuring the screwing depth of the first plug 13, so as to ensure that the elasticity of the first elastic member 14 meets the use requirement, and meanwhile, the fourth sealing ring 132 can be pressed enough, thereby ensuring the sealing performance between the first plug 13 and the first body 11.

[0050] Specifically, in the embodiment, please refer to Figure 2 The first plug 13 is provided with an elastic clamping groove, the guiding member 121 is provided with a first spring seat at one end close to the first plug 13, and the first spring is arranged between the elastic clamping groove and the first spring seat, for ensuring that the first spring has good guiding property, thereby ensuring the normal movement of the first valve body 12.

[0051] Specifically, in the embodiment, the first plug 13 is provided with an oil passage along the central axis direction of the first plug 13, the oil passage is capable of communicating with the inner cavity of the first body 11, thereby ensuring the flow of the liquid.

[0052] Further, please refer to Figure 2 , Figure 6 and Figure 7 The second body 21 is provided with a third accommodating cavity 212, the third accommodating cavity 212 and the plug-in hole 211 are communicated, the abutting member 23 comprises a fixing seat 231 and an abutting rod 232, the fixing seat 231 and the abutting rod 232 are fixedly connected, the fixing seat 231 is fixedly arranged in the third accommodating cavity 212, and the second valve body 22 is sealingly and slidably arranged between the third accommodating cavity 212 and the plug-in hole 211, so that the abutting rod 232 can open or close the second oil hole 221. Specifically, in the embodiment, the outer periphery of the second valve body 22 is provided with a fifth sealing groove 227, the fifth sealing groove 227 is provided with a fifth sealing ring 228, so as to ensure that the outer wall of the second valve body 22 and the inner wall of the third accommodating cavity 212 have sufficient sealing performance, thereby avoiding the leakage of the liquid.

[0053] Further, please refer to Figure 4 The second body 21 is provided with a boss 213 extending along the axial direction of the second body 21, and the second valve body 22 is provided with a limiting table 222, the boss 213 is used for limiting the second valve body 22. Specifically, in the embodiment, the second body 21 is provided with the boss 213 extending along the axial direction of the second body 21, the second valve body 22 is provided with the limiting table 222, the boss 213 can abut with the limiting table 222, thereby limiting the second valve body 22, and when the second valve body 22 slides along the second body 21, the fifth sealing ring 228 is always within the range of the boss 213, thereby ensuring the sealing performance.

[0054] Specifically, in the embodiment, the setting of the boss 213 also needs to ensure that when the plug-in part 112 and the second valve body 22 abut, the third sealing ring 1123 of the plug-in part 112 is also within the range of the boss 213, thereby ensuring better sealing when the first body 11 and the second body 21 are connected.

[0055] Specifically, in the embodiment, please refer to Figure 7 , the second connecting unit 20 further comprises a second elastic member 25, the second valve body 22 is provided with a clamping groove, one end of the second elastic member 25 is arranged in the clamping groove, and the second end of the second elastic member 25 is arranged in the fixing seat 231. Specifically, in the embodiment, the end of the second valve body 22 close to the fixing seat 231 is provided with a clamping groove, the fixing seat 231 is provided with a second spring seat, the second elastic member 25 is a second spring, and the second spring is arranged between the clamping groove and the second spring seat, so as to ensure better guidance of the second spring, thereby ensuring the stability of the movement of the second valve body 22.

[0056] Further, please refer to Figure 4 , the end face of the second valve body 22 close to the first body 11 or the end face of the first body 11 close to the second valve body 22 is provided with a sealing groove 223, and the sealing groove 223 is provided with a sealing member 224, which is used to seal the gap between the first body 11 and the second valve body 22 when the first oil hole 111 and the second oil hole 221 are communicated. Specifically, in the embodiment, the sealing member 224 arranged in the sealing groove 223 of the second valve body 22 can seal the gap between the first body 11 and the second valve body 22 when the first oil hole 111 and the second oil hole 221 are communicated, thereby avoiding leakage of liquid.

[0057] Specifically, in the embodiment, the third accommodating cavity 212 is arranged in steps and comprises a supporting cavity and a guiding cavity, the supporting cavity is arranged on the side of the guiding cavity away from the plug-in hole 211, the second valve body 22 is slidingly arranged in the guiding cavity, the diameter size of the supporting cavity is greater than that of the guiding cavity, and the fixing seat 231 abuts on the end face between the supporting cavity and the guiding cavity, thereby ensuring the positional stability of the abutting member 23.

[0058] Specifically, in the embodiment, the second connecting unit 20 further comprises a second plug 24, the second plug 24 is provided with external threads, and the end of the second body 21 away from the first body 11 is provided with internal threads, so that the second plug 24 and the second body 21 are threadedly connected, thereby enabling the second plug 24 to abut on the fixing seat 231, thereby ensuring the position of the abutting member 23, and thereby ensuring that the second oil hole 221 of the second valve body 22 can be normally blocked, thereby ensuring its use function.

[0059] Specifically, in the embodiment, please refer to Figure 6The second plug 24 is provided with a third groove, the second body 21 is provided with a fourth groove, and the third groove and the fourth groove are matched to form a sixth sealing groove 241 when the second plug 24 is connected with the second body 21. The sixth sealing groove 241 is provided with a sixth sealing ring 242 for sealing the gap between the second plug 24 and the second body 21, thereby ensuring the use performance.

[0060] Specifically, in the embodiment, the second plug 24 is provided with an oil passage hole in the direction of the central axis thereof, which can be communicated with the inner cavity of the second body 21, thereby ensuring the flow of liquid.

[0061] Further, referring to Figure 8 The first body 11 is provided with a limiting protrusion 114, and the second body 21 is provided with a limiting groove 214. The limiting groove 214 includes a first connecting groove 2141, a second connecting groove 2142 and a clamping groove 2143. The first connecting groove 2141 extends along the axial direction of the second body 21, the second connecting groove 2142 extends along the circumferential direction of the second body 21, and the clamping groove 2143 extends along the axial direction of the second body 21 towards the first body 11. The first connecting groove 2141, the second connecting groove 2142 and the clamping groove 2143 are sequentially communicated. The limiting protrusion 114 can sequentially slide along the first connecting groove 2141, the second connecting groove 2142 and the clamping groove 2143, and the end face of the clamping groove 2143 close to the first body 11 can abut against the limiting protrusion 114. Specifically, in the embodiment, the limiting protrusion 114 is a limiting cylinder, the first connecting groove 2141, the second connecting groove 2142 and the clamping groove 2143 are sequentially communicated, the first connecting groove 2141 extends along the axial direction of the second body 21, the second connecting groove 2142 extends along the circumferential direction of the second body 21, and the clamping groove 2143 extends along the circumferential direction of the second body 21 towards the first body 11. When the first body 11 is connected with the second body 21, the limiting protrusion 114 slides along the first connecting groove 2141 to the second connecting groove 2142, and then the first body 11 or the second body 21 is rotated, so that the limiting protrusion 114 can move along the second connecting groove 2142, thereby making the limiting protrusion 114 slide into the clamping groove 2143. Due to the existence of the first elastic member 14 and the second elastic member 25, the first body 11 moves away from the second body 21, and at the same time, the second body 21 moves away from the first body 11, thereby making the limiting protrusion 114 be limited in the clamping groove 2143. This arrangement can avoid the disconnection of the first body 11 and the second body 21, thereby ensuring the connection stability of the connecting structure, and at the same time, it is convenient to disassemble, thereby improving the use convenience.

[0062] Specifically, in the embodiment, when the first body 11 and the second body 21 are separated, an action force needs to be applied to the first body 11 and the second body 21 first, so that the first body 11 and the second body 21 are close to each other, and then the limiting protrusion 114 is out of the clamping groove 2143 and enters the second connecting groove 2142, and then the first body 11 and the second body 21 are rotated relative to each other, and then the limiting protrusion 114 slides along the second connecting groove 2142 to the first connecting groove 2141, and then the limiting protrusion 114 is out of the first connecting groove 2141, and then the first body 11 and the second body 21 are separated.

[0063] The embodiment also provides an oil brake system, which comprises a first oil pipe, a second oil pipe, a brake handle and a clamp, and further comprises the connecting structure, the first end of the first oil pipe is connected to the brake handle, the first end of the second oil pipe is connected to the clamp, and the connecting structure is connected between the second end of the first oil pipe and the second end of the second oil pipe. The oil brake system can ensure the normal function of the oil brake system by connecting the second end of the first oil pipe and the second end of the second oil pipe through the connecting structure, and when maintenance is needed, the first oil pipe and the second oil pipe can be separated conveniently through the connecting structure, so that the normal maintenance can be ensured.

[0064] The embodiment also provides a vehicle, which comprises the oil brake system, and the vehicle can be installed with the connecting structure between two oil pipes at a frame connection of the vehicle, so that when the vehicle is disassembled and transported, the connecting structure is separated, the first oil pipe and the second oil pipe can be ensured to be always located inside the frame, so that the wear of the oil pipes can be effectively avoided, and the use performance of the vehicle can be ensured.

[0065] Obviously, the above embodiment of the utility model is only for clear illustration of the utility model, and is not a limitation on the implementation mode of the utility model. For ordinary skilled in the art, various obvious changes, re-adjustment and replacement can be made without departing from the protection scope of the utility model. Here, all the implementation modes need not to be exhausted. Any modification, equivalent replacement and improvement within the spirit and principle of the utility model should be included in the protection scope of the utility model claim.

Claims

1. A connection structure, characterized by, The connecting structure comprises a detachable first connecting unit (10) and a second connecting unit (20), the first connecting unit (10) comprises a first body (11) and a first valve body (12), the first body (11) is provided with a first oil hole (111), the first valve body (12) is elastically arranged in the inner cavity of the first body (11) and can block the first oil hole (111); the second connecting unit (20) comprises a second body (21), a second valve body (22) and a pushing piece (23), the second valve body (22) is elastically arranged in the inner cavity of the second body (21), the second valve body (22) is provided with a second oil hole (221), the pushing piece (23) is fixedly arranged on the second body (21), and the pushing piece (23) is arranged in the second body (21) and can block the second oil hole (221); the first body (11) can push the second valve body (22), so that the pushing piece (23) pushes the first valve body (12) after extending out of the second valve body (22), and then the first oil hole (111) and the second oil hole (221) are communicated.

2. The connection structure according to claim 1, characterized in that The first body (11) is provided with a plug part (112), the second body (21) is provided with a plug hole (211), the plug part (112) can be sealingly plugged with the plug hole (211), and then the plug part (112) can abut against the second valve body (22).

3. The connection structure according to claim 2, characterized in that The first body (11) is also provided with a first containing cavity (113), the plug part (112) is provided with a second containing cavity (1121) and the first oil hole (111), the first containing cavity (113) and the second containing cavity (1121) are communicated and communicated with the outside through the first oil hole (111), the first valve body (12) comprises a guide piece (121) and a first blocking piece (122), the guide piece (121) and the first blocking piece (122) are fixedly connected, and the guide piece (121) is slidingly arranged in the first containing cavity (113), so that the first blocking piece (122) can open or close the first oil hole (111).

4. The connection structure according to claim 3, characterized in that The first connecting unit (10) further comprises a first plug (13) and a first elastic piece (14), the first plug (13) is sealingly connected to one end of the first body (11) away from the second body (21), and the first elastic piece (14) is arranged between the first plug (13) and the guide piece (121).

5. The connection structure according to claim 2, wherein The second body (21) is provided with a third accommodating cavity (212) in communication with the insertion hole (211), the pushing piece (23) comprises a fixing seat (231) and a pushing rod (232), the fixing seat (231) and the pushing rod (232) are fixedly connected, the fixing seat (231) is fixedly arranged in the third accommodating cavity (212), and the second valve body (22) is sealingly and slidably arranged between the third accommodating cavity (212) and the insertion hole (211), so that the pushing rod (232) can open or close the second oil hole (221).

6. The connection structure according to claim 5, characterized in that The second body (21) is provided with a boss (213) extending along the axial direction of the second body (21), and the second valve body (22) is provided with a limiting boss (222), and the boss (213) is used for limiting the second valve body (22).

7. The connection structure according to any one of claims 1 to 6, characterized in that The end face of the second valve body (22) close to the first body (11) or the end face of the first body (11) close to the second valve body (22) is provided with a sealing groove (223), and the sealing groove (223) is provided with a sealing piece (224), and the sealing piece (224) is used for sealing the gap between the first body (11) and the second valve body (22) when the first oil hole (111) and the second oil hole (221) are in communication.

8. The connection structure according to claim 7, characterized by The first body (11) is provided with a limiting protrusion (114), the second body (21) is provided with a limiting groove (214), the limiting groove (214) comprises a first connecting groove (2141), a second connecting groove (2142) and a clamping groove (2143), the first connecting groove (2141) extends along the axial direction of the second body (21), the second connecting groove (2142) extends along the circumferential direction of the second body (21), the clamping groove (2143) extends along the axial direction of the second body (21) towards the first body (11), the first connecting groove (2141) and the clamping groove (2143) are in communication, the first connecting groove (2141), the second connecting groove (2142) and the clamping groove (2143) are in communication in sequence, and the limiting protrusion (114) can slide along the first connecting groove (2141), the second connecting groove (2142) and the clamping groove (2143) in sequence, and the end face of the clamping groove (2143) close to the first body (11) can abut against the limiting protrusion (114).

9. An oil brake system comprising a first oil pipe, a second oil pipe, a brake lever, and a caliper, characterized by, The oil brake system further comprises the connecting structure according to any one of claims 1-8, the first end of the first oil pipe is connected to the brake handle, the first end of the second oil pipe is connected to the clamp, and the connecting structure is connected between the second end of the first oil pipe and the second end of the second oil pipe.

10. Vehicle, characterized in that The vehicle comprises the oil brake system according to claim 9. The vehicle comprises the oil brake system according to claim 9.

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