Dismountable convenient head assembly secondary locking handle tube sleeve

Abstract

A detachable convenient car head assembly secondary locking handle post sleeve pipe, including head pipe, aluminum upper plug, outer protective sleeve, outer protective pipe, handle post, the head pipe is adapted to the aluminum upper bowl, the head pipe is connected with the aluminum upper bowl, the aluminum upper bowl is inserted into the inside of the head pipe, the top of the aluminum upper bowl has an upper bowl positioning table, the upper bowl positioning table is pressed on the top of the head pipe, the inside of the aluminum upper bowl has a bearing connecting groove, the thrust ball bearing is inserted into the inside of the bearing connecting groove and fixed, the inside of the head pipe is provided with a handle post, the middle of the handle post has an internal thread table, the side of the internal thread table is provided with an aluminum upper plug, the top of the aluminum upper plug has an upper plug driving nut, the upper plug driving nut is threadedly connected with the internal thread table, the bottom of the aluminum upper plug is pressed on the upper part of the thrust ball bearing, the top of the thrust ball bearing has a thread table positioning groove, the thread table positioning groove is adapted to the internal thread table.

Description

Technical Field

[0001] This utility model relates to the field of bicycles, and in particular to a detachable handlebar stem sleeve that facilitates secondary locking of the handlebar assembly. Background Technology

[0002] An existing patent (publication number: CN108045486A) proposes a stem assembly, including a stem body, the stem body forming a sleeve, the sleeve having a tapered inner surface that gradually tapers inward from the port of the sleeve, and a tapered tensioning ring with an outer tapered surface. However, this device, where "the fork stem can extend into the sleeve and be inserted into the tapered tensioning ring," is problematic because the head assembly is a wear part. After long-term use, the headset locking part becomes loose and requires secondary tightening. However, since the sleeve of this device is a single piece, the handlebars need to be disassembled for re-tightening, which is time-consuming and troublesome. Summary of the Invention

[0003] This utility model addresses the aforementioned shortcomings of the existing technology by providing a detachable stem sleeve for easy secondary locking of the front end assembly. When secondary locking is required, simply separate the outer protective sleeve and the outer protective tube, slide the outer protective sleeve upwards, and use external tools to lock the front end assembly. The operation is quick and convenient.

[0004] The objective of this utility model is achieved through the following technical solution: A detachable handlebar stem sleeve for easy secondary locking of the front end assembly includes a head tube, an aluminum upper plug, an outer protective sleeve, an outer protective tube, and a handlebar stem. The head tube is adapted to the aluminum upper cup and is connected to it. The aluminum upper cup is inserted into the head tube. The top of the aluminum upper cup has an upper cup positioning platform, which is pressed against the top of the head tube. The interior of the aluminum upper cup has a bearing connecting groove, into which a thrust ball bearing is inserted and fixed. A handlebar stem is installed inside the head tube. The handlebar stem has an internal threaded platform in the middle. An aluminum upper plug is installed on the side of the internal threaded platform. The top of the aluminum upper plug has an upper plug driving nut, which is threadedly connected to the internal threaded platform. The bottom of the aluminum upper plug is pressed against the upper part of the thrust ball bearing. The top of the thrust ball bearing has a threaded platform positioning groove.

[0005] The threaded platform positioning groove is adapted to the internal threaded platform. The threaded platform positioning groove is connected to the internal threaded platform. The internal threaded platform is inserted into the threaded platform positioning groove. The internal threaded platform is connected to the aluminum waterproof upper clamping thread. The aluminum waterproof upper clamping is pressed against the upper part of the upper plug drive nut. The surface of the aluminum upper plug has clamping springs. Multiple sets of clamping springs are evenly arranged around the central axis of the aluminum upper plug. The outer protective tube is adapted to the handle upright. The outer protective tube is connected to the handle upright. The outer protective tube is sleeved on the outside of the handle upright. The top of the handle upright has an upper cover. The upper cover is pressed against the upper part of the outer protective tube.

[0006] The bottom of the outer protective tube has a positioning block, and two sets of positioning blocks are symmetrically distributed on both sides of the outer protective tube. The outer protective sleeve is adapted to the outer protective tube and is connected to the outer protective tube. The outer protective sleeve is fitted on the outside of the outer protective tube. The inside of the outer protective sleeve has a block mounting groove, and two sets of block mounting grooves are symmetrically distributed on both sides of the outer protective sleeve. The block mounting groove consists of a block insertion groove, a block transition groove, and a block positioning groove.

[0007] Beneficial effects: 1. This utility model solves the problem of preventing water from entering the headset of shared bicycles by adding stem bushings, while simplifying the disassembly steps when the handlebar assembly needs to be re-locked after long-term wear and tear. Simply separate the outer protective sleeve and outer protective tube, slide the outer protective sleeve upward, and use external tools to lock the handlebar assembly. The disassembly is quick and convenient, realizing the bicycle stem of the handlebar assembly that can be easily disassembled and re-locked.

[0008] 2. In this utility model, the outer protective sleeve is pressed against the upper part of the clamping spring, so that the positioning block is continuously pressed against the upper part of the positioning groove of the positioning block, making it less likely for the positioning block and the positioning groove to disconnect, thereby making the protective effect of the outer protective sleeve more stable.

[0009] 3. The opening of the clamping spring in this utility model faces inward, making it less likely for sand and debris to get stuck inside the clamping spring, thus preventing the clamping spring from being unable to descend and causing the outer protective cover to be unable to be removed, thereby enhancing the dustproof effect of this device.

[0010] 4. The clamping spring of this utility model has rounded chamfers on both sides, so that the outer protective sleeve will not rub violently against the corners of the clamping spring during rotation, thereby reducing the wear and tear during the installation and disassembly of the outer protective sleeve and increasing the service life of the outer protective sleeve. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of a detachable and convenient secondary locking stem sleeve structure for the front end assembly described in this utility model.

[0012] Figure 2 This is a diagram showing the internal structure of a detachable and convenient secondary locking handlebar sleeve for the front end assembly, as described in this utility model.

[0013] Figure 3 This is a partial front cross-sectional view of a detachable and convenient headstock assembly for secondary locking of the handlebar sleeve according to the present invention.

[0014] Figure 4 This is a schematic diagram of the aluminum upper plug structure described in this utility model.

[0015] Figure 5 This is a schematic diagram of the installation state of the outer protective sleeve described in this utility model.

[0016] Figure 6 This is a partially enlarged view of the installation state of the outer protective sleeve described in this utility model.

[0017] Figure 7 This is a schematic diagram of the handle upright structure described in this utility model.

[0018] Figure 8 This is a schematic diagram of the outer protective sleeve structure described in this utility model. Detailed Implementation

[0019] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments: Example 1: A detachable handlebar stem sleeve for easy secondary locking of the front end assembly includes a head tube 1, an aluminum upper plug 2, an outer protective sleeve 3, an outer protective tube 4, and a handlebar stem 6. The head tube 1 is adapted to the aluminum upper cup 11 and is connected to the aluminum upper cup 11. The aluminum upper cup 11 is inserted into the head tube 1. The top of the aluminum upper cup 11 has an upper cup positioning platform 10, which is pressed against the top of the head tube 1. The aluminum upper cup 11 has a bearing connecting groove 12 inside, and a thrust ball bearing 13 is inserted into the bearing connecting groove 12 for fixation. The handlebar stem 6 is provided inside the head tube 1. The handlebar stem 6 has an internal thread platform 14 in the middle. The aluminum upper plug 2 is provided on the side of the internal thread platform 14. The top of the aluminum upper plug 2 has an upper plug driving nut 8, which is threadedly connected to the internal thread platform 14. The bottom of the aluminum upper plug 2 is pressed against the upper part of the thrust ball bearing 13. The top of the thrust ball bearing 13 has a threaded platform positioning groove 17.

[0020] Example 2: The threaded platform positioning groove 17 of this utility model is adapted to the internal threaded platform 14. The threaded platform positioning groove 17 is connected to the internal threaded platform 14, and the internal threaded platform 14 is inserted into the threaded platform positioning groove 17. The internal threaded platform 14 is threadedly connected to the aluminum waterproof upper clamping 7. The aluminum waterproof upper clamping 7 is pressed against the upper part of the upper plug driving nut 8. The surface of the aluminum upper plug 2 has a clamping spring 9. The clamping spring 9 has rounded chamfers on both sides to prevent severe friction between the outer protective sleeve 3 and the corners of the clamping spring 9 during rotation, thereby reducing the damage during the installation and disassembly of the outer protective sleeve 3. To reduce wear and tear and increase the service life of the outer protective sleeve 3, multiple sets of clamping springs 9 are evenly arranged around the central axis of the aluminum upper plug 2. The openings of the clamping springs 9 face inward, making it less likely for sand and debris to get stuck inside the clamping springs 9. This prevents the clamping springs 9 from being unable to descend, thus avoiding the outer protective sleeve 3 from being unable to be disassembled, thereby enhancing the dustproof effect of this device. The outer protective tube 4 is adapted to the handle upright 6. The outer protective tube 4 is connected to the handle upright 6 and is sleeved on the outside of the handle upright 6. The top of the handle upright 6 has an upper cover 5, which is pressed against the upper part of the outer protective tube 4.

[0021] Example 3: The outer protective tube 4 of this utility model has a positioning block 16 at its bottom. Two sets of positioning blocks 16 are symmetrically distributed on both sides of the outer protective tube 4. The outer protective sleeve 3 is adapted to the outer protective tube 4 and is connected to the outer protective tube 4. The outer protective sleeve 3 is fitted on the outside of the outer protective tube 4. This device solves the problem of adding a stem bushing to prevent water from entering the headset of shared bicycles. At the same time, it simplifies the steps of disassembling the handlebars when the front end assembly needs to be locked again after long-term wear. Simply separate the outer protective sleeve 3 and the outer protective tube 4, slide the outer protective sleeve 3 upward, and use external tools to lock the front end assembly. The operation is quick and convenient, realizing the bicycle stem of the bicycle that can be disassembled and locked again. The outer protective sleeve 3 has a block mounting groove 15 inside. Two sets of block mounting grooves 15 are symmetrically distributed on both sides of the outer protective sleeve 3. The block mounting groove 15 is composed of a block insertion groove 151, a block transition groove 152, and a block positioning groove 153.

[0022] Example 4: The width of the card block insertion slot 151 of this utility model is greater than the width of the positioning card block 16, the width of the card block transition slot 152 is greater than the width of the card block insertion slot 151, the thickness of the card block transition slot 152 is the same as the thickness of the positioning card block 16, and the card block positioning slot 153 is adapted to the positioning card block 16.

[0023] Example 5: The positioning slot 153 of this utility model is connected to the positioning slot 16. The positioning slot 16 is inserted into the positioning slot 153. The outer protective sleeve 3 covers the outside of the aluminum waterproof clamping 7 and the upper plug drive nut 8. The outer protective sleeve 3 is pressed against the upper part of the clamping spring 9, so that the positioning slot 16 is continuously pressed against the upper part of the positioning slot 153, making it less likely for the positioning slot 16 to disconnect from the positioning slot 153, thereby making the protective effect of the outer protective sleeve 3 more stable.

[0024] Example 6: The installation steps of this utility model are as follows: Insert the aluminum upper cup 11 into the head tube 1, so that the upper cup positioning platform 10 of the aluminum upper cup 11 is pressed against the upper part of the head tube 1; insert the thrust ball bearing 13 into the bearing connecting groove 12 of the aluminum upper cup 11; insert the internal thread platform 14 of the handle upright 6 into the thread platform positioning groove 17 of the thrust ball bearing 13; thread the upper plug drive nut 8 to the internal thread platform 14 of the handle upright 6, so that the upper plug drive nut 8 is pressed against the upper part of the thrust ball bearing 13. Connect the aluminum waterproof upper clamp 7 to the internal thread platform 14, so that the aluminum waterproof upper clamp 7 is pressed against the upper plug drive nut 8. Put the outer protective tube 4 on the outside of the handle upright 6, so that the upper cover 5 of the handle upright 6 is pressed against the upper part of the outer protective tube 4. Put the outer protective sleeve 3 on the outside of the handle upright 6, so that the positioning block 16 of the outer protective tube 4 is inserted into the positioning groove 153 of the outer protective sleeve 3, so that the outer protective sleeve 3 is pressed against the top of the clamping spring 9 of the aluminum upper plug 2. The installation of this device is completed.

[0025] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A detachable and convenient head assembly secondary locking handlebar sleeve, characterized in that The structure includes a head tube (1), an aluminum upper plug (2), an outer protective sleeve (3), an outer protective tube (4), and a handle post (6). The head tube (1) is adapted to the aluminum upper cup (11), and the head tube (1) is connected to the aluminum upper cup (11). The aluminum upper cup (11) is inserted into the head tube (1). The top of the aluminum upper cup (11) has an upper cup positioning platform (10), which is pressed against the top of the head tube (1). The interior of the aluminum upper cup (11) has a bearing connecting groove (12), and a thrust ball bearing (13) is inserted into it. The handle is fixed inside the bearing connecting groove (12). The handle is installed inside the head tube (1). The handle is installed in the middle of the handle. ... handle. The handle is installed in the handle. The handle is installed in the handle. The handle is installed in the handle. The handle is installed in the handle. The handle is installed in the handle 2. The detachable handlebar stem sleeve of claim 1, wherein The threaded platform positioning groove (17) is adapted to the internal threaded platform (14). The threaded platform positioning groove (17) is connected to the internal threaded platform (14). The internal threaded platform (14) is inserted into the threaded platform positioning groove (17). The internal threaded platform (14) is threadedly connected to the aluminum waterproof upper clamping (7). The aluminum waterproof upper clamping (7) is pressed on the upper part of the upper plug driving nut (8). The surface of the aluminum upper plug (2) has clamping springs (9). Multiple sets of clamping springs (9) are evenly arranged around the central axis of the aluminum upper plug (2). The outer protective tube (4) is adapted to the handle upright (6). The outer protective tube (4) is connected to the handle upright (6). The outer protective tube (4) is sleeved on the outside of the handle upright (6). The top of the handle upright (6) has an upper cover (5). The upper cover (5) is pressed on the upper part of the outer protective tube (4).

3. The detachable head assembly of claim 2, wherein the second locking sleeve is a handlebar sleeve. The outer protective tube (4) has a positioning block (16) at the bottom. Two sets of positioning blocks (16) are symmetrically distributed on both sides of the outer protective tube (4). The outer protective sleeve (3) is adapted to the outer protective tube (4). The outer protective sleeve (3) is connected to the outer protective tube (4). The outer protective sleeve (3) is sleeved on the outside of the outer protective tube (4). The outer protective sleeve (3) has a block mounting groove (15) inside. Two sets of block mounting grooves (15) are symmetrically distributed on both sides of the outer protective sleeve (3). The block mounting groove (15) is composed of a block insertion groove (151), a block transition groove (152), and a block positioning groove (153).

4. The detachable head assembly of claim 3, wherein the second locking sleeve is a handlebar sleeve. The width of the card block insertion slot (151) is greater than the width of the positioning card block (16), the width of the card block transition slot (152) is greater than the width of the card block insertion slot (151), the thickness of the card block transition slot (152) is the same as the thickness of the positioning card block (16), and the card block positioning slot (153) is adapted to the positioning card block (16).

5. The detachable head assembly of claim 1, wherein the second locking sleeve is characterized by The positioning slot (153) connects to the positioning block (16), the positioning block (16) is inserted into the positioning slot (153), the outer protective sleeve (3) covers the aluminum waterproof and is pressed (7) and the outer side of the upper plug drive nut (8), and the outer protective sleeve (3) is pressed on the upper part of the clamping spring (9).

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