Main beam pipe

Abstract

The main beam pipe comprises a body, a lock and a tension spring, the body is provided with a cavity, the lock comprises a lock head, a lock rope and a main lock body, the lock head is arranged at one end of the lock rope, the lock rope and the tension spring are arranged in the cavity of the body, and the main lock body can be used for locking the stretched lock head. The body is further provided with a fixing plate, a buckle assembly, a clamping block and an unlocking assembly, a mounting groove is formed in the fixing plate, the buckle assembly is arranged in the mounting groove, the unlocking assembly is arranged in the cavity, one end of the clamping block is connected with a tension spring, and when the lock head overcomes the tension of the tension spring to stretch out of the main lock body, the main lock body can be unlocked. And when the other end of the clamping block is in clamping connection with the buckle assembly, the buckle assembly locks the clamping block, and the unlocking assembly is used for releasing the clamping block from the buckle assembly. According to the main beam pipe, the lock rope cannot move after being pulled to the longest length, people can lock a bicycle conveniently, operation is easy and convenient, and practicability is high.

Description

Technical Field

[0001] This utility model relates to the technical field of vehicle frame components, specifically to a main beam tube. Background Technology

[0002] Most scooters, bicycles, and electric bicycles on the market currently rely on locks for their anti-theft function. However, traditional locks are usually separate units, such as chain locks or U-locks, which are not easy to carry and are easily lost when separated from the vehicle, resulting in economic losses.

[0003] For example, Chinese Patent 201610655998.8 discloses a method for integrating a locking mechanism into a bicycle seat post, combining the seat post and locking function into one. A built-in tension spring connects to the end of a soft lock, with part of the lock body hidden inside the main post. The lock body is pulled out during use, and automatically retracts back into the main post afterward. However, this structure requires the user to hold the lock rope while it is being pulled out to overcome the spring force, thus securing the lock body to external buildings or fixed structures. The longer the extended rope, the greater the gripping force required, making it difficult to secure to larger structures. Furthermore, once the rope is released, it retracts back into the bicycle seat post due to the spring's elasticity, requiring repeated pulling. This makes it impractical. If the spring's elasticity is too high, the rope's movement during retraction will accelerate, potentially scratching the bicycle frame or causing the rope to swing and hit someone, resulting in poor safety. Utility Model Content

[0004] The purpose of this utility model is to provide a main beam tube that, once the locking rope is stretched out and fixed, cannot move, making it convenient for people to lock the vehicle and highly practical.

[0005] The technical solution adopted by the main beam tube disclosed in this utility model is as follows:

[0006] A main beam tube includes a body, a lock, and a tension spring. The body has a cavity. The lock includes a lock head, a lock rope, and a main lock body. The lock head is located at one end of the lock rope. The lock rope and the tension spring are located in the cavity of the body. The main lock body can be used to lock the extended lock head. The body also has a fixing plate, a buckle assembly, a snap-fit ​​block, and an unlocking assembly. The fixing plate has a mounting groove. The buckle assembly is located in the mounting groove. One end of the snap-fit ​​block is connected to the tension spring. When the lock head extends out of the main lock body against the tension of the tension spring and forms a snap-fit ​​connection with the other end of the snap-fit ​​block, the buckle assembly locks the snap-fit ​​block. The unlocking assembly is used to release the snap-fit ​​block from the buckle assembly.

[0007] As a preferred embodiment, the buckle assembly includes a hook and a torsion spring. One end of the hook has an arcuate portion. The mounting groove contains a fixing post and a fixing rod. The arcuate portion and the fixing post form a hinged connection. The torsion spring is mounted on the fixing rod. One end of the torsion spring abuts against the side wall of the mounting groove, and the other end of the torsion spring abuts against the outer side wall of the hook. The symmetrical hooks merge to form a snap-fit ​​groove. One end of the snap-fit ​​block has a snap-fit ​​portion that matches the snap-fit ​​groove.

[0008] As a preferred embodiment, the buckle assembly includes a hinge rod and a compression spring. The hinge rod is symmetrically arranged at both ends of the mounting groove. One end of the compression spring is fixed to the middle of the hinge rod, and the other end abuts against the side wall of the mounting groove. One end of the hinge rod forms a hinged connection with one side of the fixing plate. The other end of the hinge rod is provided with a hook portion, and the symmetrical hook portions form a snap-fit ​​groove. One end of the snap-fit ​​block is provided with a snap-fit ​​portion that matches the snap-fit ​​groove.

[0009] As a preferred embodiment, both the hook and the hinge rod have a movable block on one side, and the movable block abuts against the unlocking component.

[0010] As a preferred embodiment, a sliding block is fixedly connected to one side of the snap-fit ​​block, and multiple sets of sliding wheels are provided on both sides of the sliding block. A slide rail is provided on the fixed plate, and the sliding block is slidably mounted on the slide rail via the sliding wheels.

[0011] As a preferred embodiment, the unlocking component includes a sloping block, a push block, and a movable spring. The mounting groove has a spring cavity for placing the movable spring. The push block is slidably disposed in the mounting groove. Pushing parts are provided on both sides of the push block. One end of the movable spring abuts against the pushing part, and the other end abuts against the inner wall of the spring cavity. A ramp surface is provided on one side of the push block, and one side of the sloping block abuts against the ramp surface.

[0012] As a preferred embodiment, the mounting groove is provided with a pressing hole, the inclined block is slidably disposed in the pressing hole, the bottom of the inclined block is fixedly connected to a clamping block, the body is provided with a movable groove that matches the clamping block, the clamping block is slidably disposed in the movable groove, and when the movable spring is in its natural state, the upper end face of the clamping block abuts against the lower end face of the fixed plate.

[0013] As a preferred embodiment, the body is provided with a through hole, the top of the inclined block extends out of the body through the through hole, and a pressing block or a pushing rod is screwed to the top of the push block.

[0014] As a preferred embodiment, one end of the main body is provided with a fixed seat, and the other end is provided with a seat tube mounting seat. The two ends of the fixed plate are respectively fixed on the fixed seat and the seat tube mounting seat. A movable pulley is provided on one side of the fixed seat. One end of the tension spring is fixedly connected to the movable pulley. The upper end of the movable pulley is screwed to the snap-fit ​​block. A fixed pulley is provided on one side of the seat tube mounting seat. The locking rope passes around the movable pulley and the fixed pulley.

[0015] As a preferred embodiment, a tensioning pulley is provided between the movable pulley and the fixed pulley, and the tensioning pulley abuts against the locking rope.

[0016] The beneficial effects of the main beam tube disclosed in this utility model are as follows: When locking the vehicle, the locking rope is first pulled out from the main lock body. The locking rope pulls the tension spring and drives the locking block to move. When stretched to its maximum length, the locking block extends into the locking groove to lock and fix it. Even if the force of pulling the locking rope is released, the locking rope will not retract into the main lock body due to the restoring elasticity of the tension spring. This makes it convenient for people to wrap the locking rope around large fixed objects on the outside and then retract the locking rope. It has high security and strong reliability. When unlocking, the locking rope is first pulled to loosen the locking block from the locking groove. Then, by pressing the pressing block, the locking groove is opened, the locking block moves away from the locking groove, and the locking rope retracts into the main lock body under the elastic recovery of the tension spring, thereby completing the locking or unlocking operation. The overall structure is simple and easy to operate. Attached Figure Description

[0017] Figure 1 This is a structural schematic diagram of a main beam tube according to this utility model.

[0018] Figure 2 This is a schematic diagram of the internal structure of a main beam tube according to this utility model.

[0019] Figure 3 This is a schematic diagram of the internal structure of the main beam tube of this utility model from another perspective.

[0020] Figure 4 This is an exploded schematic diagram of a main beam tube according to this utility model.

[0021] Figure 5 This is a partially enlarged schematic diagram of one end of a fixing plate in a main beam tube according to this utility model. Detailed Implementation

[0022] The present invention will be further described and illustrated below with reference to specific embodiments and the accompanying drawings:

[0023] refer to Figures 1 to 5A main beam tube includes a body 10, a lock 20, and a tension spring 30. The body 10 has a cavity. The lock 20 includes a lock head 21, a lock rope 22, and a main lock body 23. The lock head 21 is located at one end of the lock rope 22. The lock rope 22 and the tension spring 30 are located in the cavity of the body 10. The main lock body 23 can be used to lock the extended lock head 21. The body 10 also includes a fixing plate 11, a buckle assembly 12, a snap-fit ​​block 13, and an unlocking assembly 14. 4. The fixing plate 11 is provided with a mounting groove 111. The buckle assembly 12 is disposed in the mounting groove 111. One end of the snap-fit ​​block 13 is connected to the tension spring 30. When the lock head 21 overcomes the tension of the tension spring 30 and extends out of the main lock body 23, and forms a snap-fit ​​connection between the other end of the snap-fit ​​block 13 and the buckle assembly 12, the buckle assembly 12 locks the snap-fit ​​block 13. The unlocking assembly 14 is used to release the snap-fit ​​block 13 from the buckle assembly 12.

[0024] The latching assembly 12 includes a hook 121 and a torsion spring 122. One end of the hook 121 has an arcuate portion 1211. The mounting groove 111 has a fixing post 1111 and a fixing rod 1112. The arcuate portion 1211 and the fixing post 1111 form a hinged connection, and the hook 121 can rotate around the fixing post 1111. The torsion spring 122 is disposed on the fixing rod 1112, and one end of the torsion spring 122 abuts against the side wall of the mounting groove 111. The other end of the torsion spring 122 abuts against the outer wall of the hook 121, providing the hook 121 with the required elastic force so that the locking block 13 can be released by the unlocking component 14 when needed; the symmetrical hooks 121 merge to form a locking groove 1212, and one end of the locking block 13 is provided with a locking part 131 that matches the locking groove 1212. The locking part 131 can be inserted into the locking groove 1212 to achieve locking between the locking block 13 and the hook 121.

[0025] In this embodiment, during the locking process, the user first pulls the locking rope 22 out of the main lock body 23 to the outside. The locking rope 22 moves outward against the spring force of the tension spring 30, thereby moving the locking block 13 into the locking groove 1212 on the buckle assembly 12 for locking and fixing. At this time, as the locking part 131 moves into the locking groove 1212, it will disengage the hooks 121 on both sides. The arc part 1211 rotates outward with the hooks 121, and the two sides of the hooks 121 respectively compress the torsion springs 122. The angle between the two sides of the hook 121 widens, which enlarges the locking groove 1212, allowing the locking block 13 to easily engage with the locking groove 1212. When the locking block 13 is fully engaged with the locking groove 1212, the torsion spring 122 returns to its elasticity and rotates the hook 121 back to its original size, so that the hook 121 tightly locks the locking part 131. After the locking rope 22 is stretched out, it is fixed and cannot move, making it convenient for users to lock their vehicles outdoors. The overall structure is simple and easy to operate.

[0026] In another embodiment, the latching assembly 12 includes a hinge rod and a compression spring. The hinge rod is symmetrically arranged at both ends of the mounting groove 111. One end of the compression spring is fixed to the middle of the hinge rod, and the other end abuts against the side wall of the mounting groove 111. One end of the hinge rod is hinged to one side of the fixing plate 11. The other end of the hinge rod is provided with a hook portion, and the symmetrical hook portions form a latching groove. One end of the latching block 13 is provided with a latching portion 131 that matches the latching groove 1212.

[0027] The hinge rod can replace the hook 121, and the compression spring can replace the torsion spring 122. One end of the hinge rod is also provided with a hook, which can engage with the hook part 131 on the hook block 13. When the locking rope 22 is stretched out, the locking rope 22 can also be locked and fixed, and the locking rope 22 will not retract. It can be used to replace various structures to achieve this function, and has high flexibility.

[0028] Both the hook 121 and the hinge rod are provided with a movable block 1213 on one side. The movable block 1213 abuts against the unlocking component 14. The movable block 1213 can be pushed to release the hook 121 and realize the unlocking function.

[0029] A sliding block 132 is fixedly connected to one side of the snap-fit ​​block 13. Sliding wheels 1321 are provided on both sides of the sliding block 132. A slide rail 112 is provided on the fixed plate 11. The sliding block 132 is slidably mounted on the slide rail 112 via the sliding wheels 1321.

[0030] The sliding block 132 slides along the slide rail 112 via the sliding wheel 1321 to prevent twisting and swinging during the stretching of the lock rope 22. The slide rail 112 also serves as a guide, reducing friction and making it easier for people to stretch the lock rope 22 to its maximum length.

[0031] The unlocking assembly 14 includes a sloping block 141, a push block 142, and a movable spring 143. The mounting groove 111 has a spring cavity 1113 for placing the movable spring 143. The push block 142 is slidably disposed in the mounting groove 111. Pushing parts 1421 are provided on both sides of the push block 142. One end of the movable spring 143 abuts against the pushing part 1421, and the other end abuts against the inner sidewall of the spring cavity 1113. A ramp surface 1422 is provided on one side of the push block 142, and one side of the sloping block 141 abuts against the ramp surface 1422.

[0032] The mounting groove 111 is provided with a pressing hole 1113. The inclined block 141 is slidably disposed in the pressing hole 1113. A clamping block 144 is fixedly connected to the bottom of the inclined block 141. The body 10 is provided with a movable groove 16 that matches the clamping block 144. The clamping block 144 is slidably disposed in the movable groove 16. When the movable spring 143 is in its natural state, the upper end face of the clamping block 144 abuts against the lower end face of the fixing plate 11. The body 10 is provided with a through hole 15. The top of the inclined block 141 extends out of the body 10 through the through hole 15. A pressing block 145 is screwed to the top of the push block 142. The width of the clamping block 144 is greater than the width of the pressing hole 1113. This design can ensure that the clamping block 144 has sufficient stability when sliding in the movable groove 16, and prevent it from falling off or shifting during the operation of pressing the pressing block 145.

[0033] When the user presses the pressing block 145, the inclined pressing block 141 moves along the pressing hole 1113 and pushes the push block 142 to move. The pushing parts 1421 on both sides of the push block 142 squeeze the movable spring 143, thereby causing one end of the push block 142 to push the movable block 1213 on the hook 121. The hook 121 rotates and opens, causing the locking groove 1212 to open and expand. The locking block 13 can disengage from the locking groove 1212, thereby unlocking the buckle assembly 12.

[0034] Preferably, when the locking block 13 is engaged with the buckle assembly 12, the tension spring 30 continuously generates a retracting force, preventing the force generated by pressing the down button 145 from opening and unlocking the hook 121. This effectively prevents the locking rope 22 from quickly retracting and hitting people or scratching the car when the button 145 is pressed accidentally, thus improving safety performance. When unlocking is required, the locking rope 22 is first pulled outward to move the locking block 13 away from the hook 121 before pressing the down button 145. After the locking block 13 disengages from the locking groove 1212, the elasticity of the tension spring 30 allows the locking rope 22 to retract, thereby improving the safety performance.

[0035] The body 10 is provided with a through hole 15, the top of the inclined block 141 extends out of the body 10 through the through hole 15, and the top of the push block 142 is screwed with a pressing block 145 or a push rod.

[0036] In other embodiments, the pressing block 145 can be replaced with a push rod. First, pull the locking rope 22 outward by hand, and then push the push rod. This can also achieve the effect of retracting the locking rope 22 after the locking block 13 is disengaged from the locking groove 1212, which is highly flexible.

[0037] One end of the main body 10 is provided with a fixed base 40, and the other end is provided with a seat tube mounting base 50. The two ends of the fixing plate 11 are respectively fixed to the fixed base 40 and the seat tube mounting base 50. A movable pulley 41 is provided on one side of the fixed base 40. One end of the tension spring 30 is fixedly connected to the movable pulley 41. The upper end of the movable pulley 41 is screwed to the locking block 13. A fixed pulley 51 is provided on one side of the seat tube mounting base 50. The locking rope 22 passes around the movable pulley 41. Along with the fixed pulley 51, the main body 10 is provided with a fixed pulley 51 and a movable pulley 41. The locking rope 22 is wound around the movable pulley 41 and the fixed pulley 51 in a loop, making it easier to pull outward. Multiple sets of tensioning pulleys 60 are provided between the movable pulley 41 and the fixed pulley 51. The tensioning pulleys 60 abut against the locking rope 22. These tensioning pulleys 60 can maintain the tension of the locking rope 22, reduce the slack of the locking rope 22, and improve the overall stability and reliability.

[0038] This utility model discloses a main beam tube. When locking the vehicle, the locking rope 22 is first pulled out from the main lock body 23 and stretched to its maximum length. The locking rope 22 pulls the tension spring 30 and drives the locking block 13 to move. When the locking block extends into the locking groove 1212 to engage, the locking rope 22 is fixed after being stretched out and cannot move. Even if the force pulling the locking rope 22 is released, the locking rope 22 will not retract into the main lock body 23 due to the restoring elasticity of the tension spring 30, making it convenient for people to wrap the locking rope 22 around the outside. The locking rope 22 is secured to large fixed objects before being retracted, ensuring high security and reliability. When unlocking is required, the locking rope 22 is pulled to loosen the engagement between the locking block and the locking groove 1212. Then, the locking groove 1212 is opened by pressing the pressing block 145, allowing the locking block 13 to disengage from the locking groove 1212. The locking rope 22 retracts into the main lock body 23 under the elastic recovery of the tension spring 30, thus completing the locking or unlocking operation. The overall structure is simple and easy to operate.

[0039] It should be noted that the main beam tube proposed in this embodiment can be applied to vehicles with main beam tubes, such as bicycles and motorcycles.

[0040] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit the scope of protection of this utility model. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the essence and scope of the technical solutions of this utility model.

Claims

1. A main beam tube, comprising a body, a lock, and a tension spring, wherein the body has a cavity, the lock includes a lock head, a lock rope, and a main lock body, the lock head is disposed at one end of the lock rope, the lock rope and the tension spring are disposed in the cavity of the body, and the main lock body can be used to lock the extended lock head, characterized in that, The main body also includes a fixing plate, a buckle assembly, a snap-fit ​​block, and an unlocking assembly. The fixing plate has a mounting groove, the buckle assembly is disposed in the mounting groove, and one end of the snap-fit ​​block is connected to a tension spring. When the lock head extends out of the main lock body against the tension of the tension spring and forms a snap-fit ​​connection between the other end of the snap-fit ​​block and the buckle assembly, the buckle assembly locks the snap-fit ​​block. The unlocking assembly is used to release the snap-fit ​​block from the buckle assembly.

2. The main beam tube as described in claim 1, characterized in that, The buckle assembly includes a hook and a torsion spring. One end of the hook has an arcuate portion. The mounting groove contains a fixing post and a fixing rod. The arcuate portion and the fixing post are hinged together. The torsion spring is mounted on the fixing rod. One end of the torsion spring abuts against the side wall of the mounting groove, and the other end of the torsion spring abuts against the outer side wall of the hook. The symmetrical hooks merge to form a snap-fit ​​groove. One end of the snap-fit ​​block has a snap-fit ​​portion that matches the snap-fit ​​groove.

3. The main beam pipe as described in claim 1, characterized in that, The latching assembly includes a hinge rod and a compression spring. The hinge rod is symmetrically arranged at both ends of the mounting groove. One end of the compression spring is fixed to the middle of the hinge rod, and the other end abuts against the side wall of the mounting groove. One end of the hinge rod is hinged to one side of the fixing plate. The other end of the hinge rod is provided with a hook portion, and the symmetrical hook portions form a latching groove. One end of the latching block is provided with a latching portion that matches the latching groove.

4. The main beam tube as described in any one of claims 2 or 3, characterized in that, Both the hook and the hinge rod have a movable block on one side, and the movable block abuts against the unlocking component.

5. The main beam tube as described in any one of claims 2 or 3, characterized in that, A sliding block is fixedly connected to one side of the snap-fit ​​block, and sliding wheels are provided on both sides of the sliding block. A slide rail is provided on the fixed plate, and the sliding block is slidably mounted on the slide rail via the sliding wheels.

6. The main beam pipe as described in claim 1, characterized in that, The unlocking assembly includes a sloping block, a push block, and a movable spring. The mounting groove has a spring cavity for placing the movable spring. The push block is slidably disposed in the mounting groove. The push block has pushing parts on both sides. One end of the movable spring abuts against the pushing part, and the other end abuts against the inner wall of the spring cavity. One side of the push block has a ramp surface, and one side of the sloping block abuts against the ramp surface.

7. The main beam pipe as described in claim 6, characterized in that, The mounting groove is provided with a pressing hole, the inclined block is slidably disposed in the pressing hole, and a clamping block is fixedly connected to the bottom of the inclined block. The main body is provided with a movable groove that matches the clamping block, and the clamping block is slidably disposed in the movable groove. When the movable spring is in its natural state, the upper end face of the clamping block abuts against the lower end face of the fixed plate.

8. The main beam pipe as described in claim 6, characterized in that, The main body is provided with a through hole, the top of the inclined block extends out of the main body through the through hole, and the top of the push block is screwed with a pressing block or a pushing rod.

9. The main beam pipe as described in claim 1, characterized in that, One end of the main body is provided with a fixed seat, and the other end is provided with a seat tube mounting seat. The two ends of the fixed plate are respectively fixed on the fixed seat and the seat tube mounting seat. A movable pulley is provided on one side of the fixed seat. One end of the tension spring is fixedly connected to the movable pulley. The upper end of the movable pulley is screwed to the snap-fit ​​block. A fixed pulley is provided on one side of the seat tube mounting seat. The locking rope passes around the movable pulley and the fixed pulley.

10. The main beam tube as described in claim 9, characterized in that, Multiple tensioning pulleys are provided between the movable pulley and the fixed pulley, and the tensioning pulleys abut against the locking rope.

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