Hidden handlebar assembly for bicycle

Abstract

The utility model discloses a hidden handlebar assembly for a bicycle. The hidden handlebar assembly is used for driving a front fork sleeve of the bicycle to rotate synchronously. The handlebar assembly comprises a handlebar body and a locking component, and the handlebar body is limited and fixed with the front fork sleeve through the locking component; the device is characterized in that the locking assembly comprises a limiting body, a guide block, an expansion set, a first adjusting bolt and a second adjusting bolt; the limiting body spans the front fork sleeve and forms a locking part and an assembling part which are positioned on the inner wall surface and the outer wall surface of the front fork sleeve; the assembling part and the locking part are correspondingly matched with the guide block and the inclined surface of the expansion group respectively; the guide block is arranged between the handlebar body and the outer peripheral wall of the front fork sleeve; according to the technical scheme, the bicycle front fork and handlebar assembly solves the problems that an existing bicycle front fork and handlebar assembly is not attractive in assembling effect and unstable in assembling structure, and due to the fact that a handlebar is prone to loosening, the handlebar, a front fork and tires are not end-to-end and asynchronous steering occurs.

Description

Technical Field

[0001] The utility model relates to the technical field of bicycles, in particular to a hidden handlebar assembly for a bicycle. Background Art

[0002] Existing bicycles have several major structures: front fork, frame, and handlebars, among which the handlebars are usually installed in combination with the front fork to achieve synchronous steering of the handlebars, front fork, and tires. Figure 1 When installing the handlebar and the front fork, first put the frame on the front fork sleeve; then, put a limit sleeve for the upper limit position on the front fork sleeve of the front fork; then, put the handlebar on the front fork sleeve through the open-loop sleeve of the handlebar, the limit sleeve contacts with the open-loop sleeve, and the upper limit position of the handlebar is suspended above the frame; then, lock the exposed nut structure on the handlebar to close the expansion cut of the open-loop sleeve, so that the handlebar can hold and fix the front fork sleeve through the open-loop sleeve; finally, insert the hanging core into the front fork sleeve for expansion fit, and lock the upper cover on the hanging core to complete all installation steps.

[0003] Although the above traditional structure and installation method can achieve the installation effect, there are many disadvantages in practice: first, when the manufacturer actually mass-produces this type of handlebar with an open-loop sleeve, it is necessary to add an additional process to process the expansion cut on the open-loop sleeve, which increases the processing cost and inevitably causes waste of materials. Even if some handlebars are manufactured in one piece, the mold is more complicated and the cost increase is inevitable; second, the expansion cut and the exposed threaded structure on the open-loop sleeve are extremely unsightly; third, after the bicycle front fork and handlebar assembly are assembled, this installation method of closing the expansion cut with a threaded structure has an unstable fixing effect. When the handlebar is under pressure for a long time, the nut will inevitably loosen, and the handlebar, front fork, and tire will have problems with asynchronous steering for no reason; fourth, the handlebar relies on the cooperation of the limit sleeve to be completely suspended at the upper end of the frame to maintain a fixed height.

[0004] In summary, the existing handlebar assembly structure needs to be further improved and enhanced. Utility Model Content

[0005] The utility model provides a hidden handlebar assembly for a bicycle, which has a simple structure, is easy to assemble, has low cost, and is highly applicable. It solves the problems of the existing bicycle front fork and handlebar assembly having an unsightly assembly effect, an unstable assembly structure, and the handlebar being easily loose, which causes the handlebar, front fork, and tire to turn asynchronously for no reason. To achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A hidden handlebar assembly for a bicycle, which is used to drive the front fork sleeve of the bicycle to rotate synchronously; the handlebar assembly comprises a handlebar body and a locking assembly, wherein the handlebar body is fixed to the front fork sleeve by the locking assembly; the characteristic is that the locking assembly comprises a limiting body, a guide block, an expansion group and two adjusting bolts; the limiting body is arranged across the front fork sleeve and forms an assembly part and a locking part located on the inner and outer wall surfaces of the front fork sleeve; the assembly part and the locking part respectively correspond to the inclined surfaces of the guide block and the expansion group; the guide block is installed between the handlebar body and the outer peripheral wall of the front fork sleeve, and the guide block is driven to move relative to the inclined surface on the assembly part through the circumferential rotation of the adjusting bolt, so that the side wall of the guide block is pressed against the handlebar body while the assembly part is tightened against the outer peripheral wall of the front fork sleeve; the expansion group is built in the front fork sleeve, and is connected to the locking part through the adjusting bolt, and the expansion group is driven to expand the inner wall of the front fork sleeve radially through the inclined surface cooperation.

[0007] Preferably, it also includes a lifting body, a clamping cavity for placing the lifting body is formed at the bottom of the guide block, the lifting body is restricted from rotating by the guide block in the clamping cavity, the first adjustment bolt passes through the assembly part and passes through the guide block and is threadedly connected with the lifting body; when the first adjustment bolt rotates circumferentially, the lifting body moves along the axial direction of the first adjustment bolt and drives the guide block to move relative to the inclined surface on the assembly part.

[0008] Preferably, the lifting body is "cylindrical", and the shape of the clamping cavity is adapted to the shape of the lifting body; the lifting body has an assembly hole passing through the middle end, the axis of the assembly hole is perpendicular to the axis of the lifting body, and the first adjustment bolt is threadedly connected to the lifting body through the assembly hole.

[0009] Preferably, the assembly part and the guide block are respectively formed with mutually connected movable holes, the first adjusting bolt is simultaneously passed through the movable holes of the assembly part and the guide block and is threadedly connected to the lifting body, and a displacement gap is formed between the first adjusting bolt and the hole wall of the movable hole; when the lifting body moves along the axial direction of the first adjusting bolt, the lifting body drives the guide block to move on the displacement gap, so that the guide block can be displaced on the inclined surface of the assembly part.

[0010] Preferably, a countersunk groove is provided on the upper surface of the assembly portion, and when the first adjusting bolt passes through the assembly portion, the first adjusting bolt is clamped on the countersunk groove to be axially limited on the assembly portion.

[0011] Preferably, the limiting body also includes a connecting portion located above the tube wall of the front fork sleeve; the assembly portion and the locking portion are respectively formed at both ends of the connecting portion; the assembly portion is bent and moved on the connecting portion to apply a supporting force to the outer peripheral wall of the front fork sleeve, and the supporting force cooperates with the expansion force applied to the inner wall of the front fork sleeve by the expansion group to clamp the tube wall of the front fork sleeve.

[0012] Preferably, the expansion group includes a left expansion block and a right expansion block, which are arranged correspondingly and surrounded by a first adjustment hole. The outlet end of the first adjustment hole has an inclined opening, and the locking portion cooperates with the inclined surface of the inclined opening; the second adjustment bolt is guided through the first adjustment hole and threadedly connected to the locking portion, and drives the inclined surface of the inclined opening to be pressed onto the locking portion through circumferential rotation, driving the left expansion block and the right expansion block to move back to back with each other, so as to radially expand the inner wall of the front fork sleeve.

[0013] Preferably, the entrance end of the first adjustment hole also has an inclined opening, and the second adjustment bolt cooperates with the inclined surface of the inclined opening; the locking part has a first inclined head threadedly connected to the second adjustment bolt, and the first inclined head cooperates with the inclined surface of the inclined opening at the exit end of the first adjustment hole.

[0014] Preferably, the locking portion is also provided with a second tilting head, and the first tilting head and the second tilting head are symmetrically arranged on the left and right; the left expansion block and the right expansion block are also surrounded by a second adjustment hole corresponding to the second tilting head; a third adjustment bolt is passed through the second adjustment hole, and the third adjustment bolt drives the left expansion block and the right expansion block to radially tighten the inner wall of the front fork sleeve through circumferential rotation, so that the upper surface of the left expansion block and the right expansion block remain flush with the horizontal plane.

[0015] Preferably, the handlebar body is formed with a receiving groove, which is located between the handlebar body and the outer peripheral wall of the front fork sleeve, and the side position of the receiving groove is connected to a through hole for assembly with the front fork sleeve.

[0016] From the above description of the utility model, it can be seen that compared with the prior art, the utility model has the following beneficial effects:

[0017] (1) The technical solution of the utility model provides a hidden handlebar assembly for a bicycle, which has a simple structure, is easy to assemble and has a low cost, and solves the problems of the existing bicycle front fork and handlebar assembly having an unsightly assembly effect, an unstable assembly structure, and the handlebar being easily loose, which causes the handlebar, front fork, and tire to turn out of sync without reason; the solution of the utility model breaks the traditional concept that existing bicycles must adopt an open-loop sleeve structure, abandons this type of open-loop sleeve structure, and instead adopts a closed-loop sleeve structure that is easier to manufacture;

[0018] During the actual assembly process of the structure of this scheme, the limit body in the locking assembly is arranged astride the front fork sleeve, and the assembly part on the limit body cooperates with the guide block on the outer peripheral wall of the front fork sleeve to apply a holding constraint force to the outer peripheral wall surface of the front fork sleeve and the side wall surface of the handlebar body; and the locking part on the limit body cooperates with the expansion group on the inner wall surface of the front fork sleeve to also apply an expansion constraint force to the inner wall surface of the front fork sleeve; thus, through the design method of straddling a component (the limit body), the forces in different radial directions of the three surfaces are realized, and the three forces cooperate with each other to clamp and fix the tube wall of the front fork sleeve, so that the entire limit body can be kept fixed on the front fork sleeve and will not move or loosen, so as to firmly lock the handlebar body on the front fork sleeve, the structural strength is stable, and the riding safety and bicycle quality can be effectively guaranteed. After the installation of the handlebar assembly and the front fork sleeve is completed, the originally exposed structural parts can be hidden, making the bicycle more beautiful as a whole.

[0019] (2) In the present technical solution, the handlebar body is directly fixed on the front fork sleeve by the locking assembly, that is, the entire handlebar body is fixed on the front fork sleeve by the limiting body and is axially limited; therefore, the handlebar no longer needs to rely on the limiting sleeve for limiting, and can be directly suspended on the upper end of the frame to maintain a certain fixed height. In this way, even if the user loses the limiting sleeve or the limiting sleeve is not suitable for the front fork sleeve, the bicycle can still be assembled and used, thus solving certain hidden dangers; of course, in the actual assembly process of the bicycle, in order to reduce the axial force strength of the locking assembly, a limiting sleeve will still be used to provide a certain axial support to ensure the service life of the locking assembly, which can be selected according to the actual scenario or needs.

[0020] (3) In the present technical solution, the limiter is locked and fixed on both the inner and outer wall surfaces of the front fork sleeve, that is, both ends need to be locked to keep the limiter fixed. If only one end of the outer wall is locked, the locking part at one end of the inner wall may directly tilt up, and the bicycle will have the following hidden dangers: First, since only one end of the outer wall is exerting force, the axial restraint function of the limiter disappears directly. With long-term riding, the assembly part and the guide part may directly move along the axial direction of the front fork sleeve, and the two will be out of coordination, and the handlebar body will fall off the front fork sleeve, posing a great safety hazard; second, since the front fork sleeve is usually a hollow structure, with long-term riding, the handlebar body will gradually exert a reaction thrust on the outer wall surface of the front fork sleeve, that is, only the outer wall surface of the front fork sleeve is subjected to unilateral force, and the front fork sleeve will inevitably deform. Therefore, in order to solve the above problems, the limit body of the technical solution adopts a locking method at both ends to limit the limit body on the front fork sleeve. In this way, the limit body can not only generate a radial force to lock the handlebar body on the front fork sleeve, but also cooperate with the front fork sleeve to block the axial direction of the handlebar body to a certain extent, and limit the axial direction of the handlebar body on the front fork sleeve, so that it can never move axially by itself, thereby solving safety hazards and preventing the handlebar body from falling off. In addition, the inner wall and outer wall of the front fork sleeve are exerted with corresponding forces, which can avoid deformation of the front fork sleeve.

[0021] (4) The lifting body is cylindrical, and the axis of the assembly hole in the middle is perpendicular to the axis of the lifting body, that is, the axis of the first adjusting bolt and the axis of the lifting body are also perpendicular to each other; when the first adjusting bolt moves, it will drive the lifting body to remain horizontal during the movement, so that the outer wall surface of the lifting body and the inner wall of the clamping cavity are always in contact with each other, so that the force exerted on the guide block is more uniform and will not tilt during displacement, ensuring that the force of the side wall of the guide block pressing the handlebar body is more evenly distributed, thereby improving the tightness of the fit.

[0022] (5) In the present technical solution, a left expansion block and a right expansion block are designed so that the two expansion blocks can move away from each other under the action of the second adjustment bolt, thereby ensuring that the expansion force applied by the expansion group to the front fork sleeve is stronger.

[0023] (6) In the present technical solution, a second tilting head is further provided on the locking portion, and the first tilting head and the second tilting head are symmetrically arranged on the left and right. The design of the two tilting heads can ensure that the left expansion block and the right expansion block can maintain a certain degree of flatness after being subjected to force, so that the force applied by the expansion group to the front fork sleeve is more concentrated and evenly distributed, so that the locking portion and the front fork sleeve are more firmly matched. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0025] Figure 1 It is a schematic diagram of the assembly of a front fork sleeve, a handlebar assembly, and a frame of a bicycle in the prior art;

[0026] Figure 2 This is a schematic diagram of the assembly of a bicycle front fork sleeve, a handlebar assembly, and a bicycle frame according to an embodiment of the utility model;

[0027] Figure 3 It is an exploded schematic diagram of the handlebar body, locking assembly, and front fork sleeve of the embodiment of the utility model;

[0028] Figure 4 for Figure 3 A cross-sectional schematic diagram of

[0029] Figure 5 This is a structural schematic diagram of the handlebar body of the utility model before being limited and fixed to the front fork sleeve by the locking assembly;

[0030] Figure 6 This is a schematic diagram of the structure of the handlebar body after being limited and fixed to the front fork sleeve by the locking assembly according to the embodiment of the utility model;

[0031] Figure 7 It is a schematic structural diagram of the locking assembly of an embodiment of the utility model.

[0032] The following are the descriptions of the reference numerals:

[0033] 01. Handlebar; 02. Front fork; 03. Frame; 04. Limit sleeve;

[0034] 11. handlebar body; 12. locking assembly; 13. receiving groove; 14. through hole;

[0035] 121, limiter;

[0036] 1211, locking portion; 1211a, first tilting head; 1211b, second tilting head;

[0037] 1212, assembly portion; 1212a, countersunk groove;

[0038] 1213, connection part;

[0039] 122, guide block; 122a, card cavity;

[0040] 123, expansion group; 1231, left expansion block; 1232, right expansion block; 1233, first adjustment hole; 1234, second adjustment hole; 123a, inclined opening;

[0041] 124, first adjusting bolt; 125, second adjusting bolt; 126, third adjusting bolt;

[0042] 2. Front fork sleeve; 3. Lifting body; 31. Assembly hole; 4. Pressure cover; 5. Decorative cover; A. Displacement gap; B. Moving hole. DETAILED DESCRIPTION

[0043] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are preferred embodiments of the utility model and should not be regarded as excluding other embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0044] In the claims, specification and the above-mentioned drawings of the utility model, unless otherwise clearly defined, the use of terms such as "first", "second" or "third" etc. is to distinguish different objects rather than to describe a specific order.

[0045] In the claims, specification and the above-mentioned drawings of the utility model, unless otherwise explicitly defined, directional words, such as the terms "center", "lateral", "longitudinal", "horizontal", "vertical", "top", "bottom", "inside", "outside", "up", "down", "front", "back", "left", "right", "clockwise", "counterclockwise", etc., indicating directions or positional relationships are based on the directions and positional relationships shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation or be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the specific protection scope of the utility model.

[0046] In the claims, specification and the above drawings of the utility model, unless otherwise clearly defined, if the term "fixed connection" or "fixed connection" is used, it should be understood in a broad sense, that is, any connection method without a displacement relationship and relative rotation relationship between the two, that is to say, including non-detachable fixed connection, detachable fixed connection, integrated connection and fixed connection through other devices or elements.

[0047] In the claims, specification and drawings of the present utility model, if the terms "include", "have" and their variations are used, they are intended to mean "including but not limited to".

[0048] See also Figures 1 to 7 .

[0049] This embodiment provides a hidden handlebar assembly for a bicycle, which has a simple structure, is easy to assemble and has low cost, and solves the following problems: Figure 1 In the prior art, the assembly effect of the front fork and handlebar assembly of the bicycle is not aesthetically pleasing, the assembly structure is unstable, and the handlebar is easily loosened, resulting in the problem of unsynchronized steering of the handlebar, front fork and tire.

[0050] The hidden handlebar assembly of the utility model is used to drive the front fork sleeve 2 of the bicycle to rotate synchronously, and its structural strength is stable, which can effectively ensure the riding safety and bicycle quality; see Figure 2 After the installation of the handlebar assembly and the front fork sleeve 2 is completed in the embodiment of the utility model, the originally exposed structural parts (locking assembly 12) can be hidden, making the bicycle more beautiful as a whole.

[0051] In this embodiment, the handlebar assembly includes a handlebar body 11 and a locking assembly 12. The handlebar body 11 is mainly fixed to the front fork sleeve 2 by the locking assembly 12. The locking assembly 12 includes a limiting body 121, a guide block 122, an expansion group 123, a first adjustment bolt 124, and a second adjustment bolt 125.

[0052] See also Figures 3 to 5 ,in,

[0053] The front fork sleeve 2 is a hollow vertical tube on the front fork of the bicycle, and is sleeved and matched with the handlebar body 11;

[0054] The handlebar body 11 is formed with a receiving groove 13, and the receiving groove 13 is located between the handlebar body 11 and the outer peripheral wall of the front fork sleeve 2. The side position of the receiving groove 13 is connected to a through hole 14 for sleeve assembly with the front fork sleeve 2;

[0055] Limiting body 121, see Figure 5 , which straddles the front fork sleeve 2 and forms a locking portion 1211 and an assembly portion 1212 located on the inner and outer wall surfaces of the front fork sleeve 2; wherein the assembly portion 1212 is matched with the corresponding inclined surface of the guide block 122, and the locking portion 1211 is matched with the corresponding inclined surface of the expansion group 123;

[0056] Guide block 122, see Figure 5 , which is installed in the receiving groove 13 between the handlebar body 11 and the outer peripheral wall of the front fork sleeve 2; the upper surface of the guide block 122 is an inclined surface, which cooperates with the inclined surface of the lower surface of the assembly portion 1212; see Figure 6, the circumferential rotation of the first adjusting bolt 124 can drive the guide block 122 to move relative to the inclined surface on the assembly part 1212, so that the guide block 122 moves toward the left handlebar body 11 until the side wall is pressed against the handlebar body 11, and at the same time, the assembly part 1212 is displaced toward the right front fork sleeve 2 until the assembly part 1212 is pressed against the outer peripheral wall of the front fork sleeve 2 (the side wall of the guide block 122 will exert a reaction force after pressing the handlebar body 11, and the assembly part 1212 will move in the direction of the front fork sleeve 2 to be close to the outer wall surface of the front fork sleeve 2 and exert a holding force);

[0057] The expansion group 123 is built into the front fork sleeve 2 and connected to the locking portion 1211 through the second adjustment bolt 125, and the expansion group 123 is driven to expand the inner wall of the front fork sleeve 2 in the radial direction by the inclined surface cooperation;

[0058] Therefore, in this embodiment, the limiting body 121 in the locking assembly 12 is arranged astride the front fork sleeve 2, and the assembly portion 1212 on the limiting body 121 cooperates with the guide block 122 on the outer peripheral wall of the front fork sleeve 2 to apply a holding constraint force to the outer peripheral wall surface of the front fork sleeve 2 and the side wall surface of the handlebar body 11; and the locking portion 1211 on the limiting body 121 cooperates with the expansion group 123 on the inner wall surface of the front fork sleeve 2 to also apply an expansion constraint force to the inner wall surface of the front fork sleeve 2; through the design of a component (limiting body 121) being arranged astride, forces in different radial directions are applied to the side wall surface of the handlebar body 11, the outer wall surface and the inner wall surface of the front fork sleeve 2 respectively, and the three forces cooperate with each other, that is, the tube wall of the front fork sleeve 2 will be clamped and fixed, so that the entire limiting body 121 can be kept fixed on the front fork sleeve 2 and will not move or loosen, so as to firmly lock the handlebar body 11 on the front fork sleeve 2.

[0059] In this embodiment, see Figure 6 The limiting body 121 also includes a connecting portion 1213 located above the tube wall of the front fork sleeve 2; the assembly portion 1212 and the locking portion 1211 are respectively formed at both ends of the connecting portion 1213; the assembly portion 1212 can be bent and moved correspondingly on the connecting end of the connecting portion 1213 (see Figure 6 ) to tighten the outer peripheral wall of the front fork sleeve 2 and apply a radial supporting force thereto, the supporting force cooperates with the radial tightening force applied by the expansion group 123 to the inner wall of the front fork sleeve 2 to clamp the tube wall of the front fork sleeve 2, so that the connecting portion 1213 on the limiting body 121 will remain fixed; when the user is riding, the handlebar body 11 will be vibrated and move in the axial direction relative to the front fork sleeve 2, that is, the guide block 122 will also vibrate axially. At this time, since the locking portion 1211 cooperates with the assembly portion 1212 to clamp the front fork sleeve 2, the assembly portion 1212 will block the axial direction to a certain extent, and the handlebar body 11 will be axially limited to the front fork sleeve 2, so that it can never move axially by itself.

[0060] It is worth noting that in the present embodiment, the assembly portion 1212 and the locking portion 1211 of the limit body 121 are located at both ends of the connecting portion 1213, and the overall "clamping structure style" cooperates with the front fork sleeve 2 to subject the guide block 122 and the handlebar body 11 to a certain axial constraint force. Therefore, the design method of the locking portion 1211 on the limit body 121 is indispensable. If the locking portion 1211 on the limit body 121 is cancelled and only the assembly portion 1212 is left, the guide block 122 will only be subject to radial constraint force but not axial constraint force, and the guide block 122 may jump axially and loosen, and the matching and tightening effect between it and the assembly portion 1212 will fail.

[0061] In this embodiment, see Figure 5 A countersunk groove 1212a is provided on the upper surface of the assembly portion 1212. The first adjusting bolt 124 is a countersunk bolt, which passes through the assembly portion 1212 and is clamped on the countersunk groove 1212a so as to be axially limited by the countersunk groove 1212a on the assembly portion 1212. At this time, the first adjusting bolt 124 can no longer pass through the assembly portion 1212 and can only rotate circumferentially on the assembly portion 1212.

[0062] In this embodiment, see Figure 5 , further comprising a lifting body 3, a clamping cavity 122a for placing the lifting body 3 is formed at the bottom of the guide block 122, the lifting body 3 is restricted from rotating in the clamping cavity 122a by the guide block 122, and the first adjustment bolt 124 passes through the limited assembly portion 1212 and is further passed through the guide block 122 and screwed to the lifting body 3. Figure 6 When the first adjusting bolt 124 rotates circumferentially, the first adjusting bolt 124 drives the lifting body 3 to rotate, and the outer wall surface of the lifting body 3 will abut against the inner wall of the clamping cavity 122a and fit in contact with the guide block 122, and the lifting body 3 is blocked by the guide block 122 and cannot rotate; and as the first adjusting bolt 124 continues to rotate, the lifting body 3 will only move upward along the axial direction of the first adjusting bolt 124 when it is unable to rotate, and drive the guide block 122 to move relative to the inclined surface on the assembly part 1212.

[0063] In this embodiment, the lifting body 3 is "cylindrical", the shape of the clamping cavity 122a is adapted to the shape of the lifting body 3, and the clamping cavity 122a is a cylindrical cavity; the lifting body 3 has an assembly hole 31 at the middle end, the axis of the assembly hole 31 is perpendicular to the axis of the lifting body 3, the assembly hole 31 has an internal thread, and the first adjustment bolt 124 is screwed to the lifting body 3 through the assembly hole 31. The cylindrical design can expand the force-bearing area, so that the outer wall surface of the lifting body 3 and the inner wall of the clamping cavity 122a always fit each other, and the fitting surface of the two is larger, so that the force on the guide block 122 is more uniform and will not tilt during displacement, ensuring that the force of the side wall of the guide block 122 pressing the handlebar body 11 is more evenly distributed.

[0064] In this embodiment, see Figure 5 and Figure 6 The assembly part 1212 and the guide block 122 are respectively formed with mutually connected moving holes B, and the first adjustment bolt 124 is simultaneously passed through the moving holes B of the assembly part 1212 and the guide block 122 and is screwed to the lifting body 3, and the first adjustment bolt 124 forms a displacement gap A with respect to the hole wall of the moving hole B; when the lifting body 3 moves along the axial direction of the first adjustment bolt 124, the lifting body 3 drives the guide block 122 to move in the displacement gap A, so that the guide block 122 can be displaced on the oblique surface of the assembly part 1212. By leaving a gap, it is ensured that the guide block 122 can touch and tighten the handlebar body 11, so that the guide block 122 can be displaced on the oblique surface of the assembly part 1212.

[0065] In this embodiment, see Figure 3 and Figure 4 The expansion group 123 includes a left expansion block 1231 and a right expansion block 1232, which are arranged correspondingly and surrounded by a first adjustment hole 1233, and the inlet and outlet ends of the first adjustment hole 1233 both have an inclined opening 123a. Figure 7 The first inclined head 1211a on the locking portion 1211 cooperates with the inclined surface of the inclined port 123a at the outlet end, and the second adjusting bolt 125 cooperates with the inclined surface of the inclined port 123a at the inlet end. The second adjusting bolt 125 passes through the first adjusting hole 1233 and is threadedly connected to the locking portion 1211, and moves axially toward the locking portion 1211 through circumferential rotation, driving the inclined surface of the inclined port 123a at the outlet end to be pressed onto the first inclined head 1211a, driving the left expansion block 1231 and the right expansion block 1232 to move back to each other, so as to radially expand the inner wall of the front fork sleeve 2.

[0066] In this embodiment, see Figure 7The locking portion 1211 is also provided with a second tilting head 1211b, and the first tilting head 1211a and the second tilting head 1211b are symmetrically arranged on the locking portion 1211; the left expansion block 1231 and the right expansion block 1232 are also surrounded by a second adjustment hole 1234 corresponding to the second tilting head 1211b; the structure of the second adjustment hole 1234 is the same as that of the first adjustment hole 1233, and it also has a tilting mouth 123a. A third adjusting bolt 126 is also passed through the second adjusting hole 1234. At this time, the left sides of the left expansion block 1231 and the right expansion block 1232 have been limited by the second adjusting bolt 125. When the third adjusting bolt 126 drives the left expansion block 1231 and the right expansion block 1232 to radially expand the inner wall of the front fork sleeve 2 through circumferential rotation, the upper surfaces of the left expansion block 1231 and the right expansion block 1232 maintain a certain level relative to the horizontal plane, that is, the two will not tilt on the locking portion 1211, so that the expansion force applied by the left expansion block 1231 and the right expansion block 1232 to the inner wall of the front fork sleeve 2 can be more evenly distributed and concentrated, and the coordination effect with the holding force of the assembly portion 1212 can be better.

[0067] In this embodiment, see Figure 6 , and also includes a pressure cover 4 and a decorative cover 5. After the handlebar body 11 is assembled with the front fork sleeve 2 through the locking component 12, the pressure cover 4 and the decorative cover 5 can be locked to the outside, which can not only achieve the purpose of hiding the internal locking component 12, but also further apply axial restraint force to the locking component 12.

[0068] The working principle and use process of this utility model:

[0069] See also Figures 3 to 7

[0070] When the handlebar body 11 and the front fork sleeve 2 are installed,

[0071] First, the handlebar body 11 is sleeved on the front fork sleeve 2 for preliminary positioning;

[0072] Second, place the guide block 122 and the lifting body 3 in the receiving groove 13, and then arrange the limiting body 121 and the left expansion block 1231 and the right expansion block 1232 on the inner wall surface of the front fork sleeve 2, so that the assembly part 1212 on the limiting body 121 cooperates with the inclined surface of the guide block 122, and the first inclined head 1211a and the second inclined head 1211b on the locking part 1211 cooperate with the inclined surface of the left expansion block 1231 and the right expansion block 1232;

[0073] Third, the first adjusting bolt 124 is passed through the movable holes B on the assembly part 1212 and the guide block 122 and is screwed to the lifting body 3; then, the first adjusting bolt 124 is rotated to drive the guide block 122 to move relative to the inclined surface on the assembly part 1212 through the lifting body 3, so that the guide block 122 moves toward the left handlebar body 11 until the side wall is pressed against the handlebar body 11, and at the same time, the assembly part 1212 is moved toward the right front fork sleeve 2 until the assembly part 1212 is pressed against the outer peripheral wall of the front fork sleeve 2, thereby completing the fixing of the front fork sleeve 2 and the handlebar body 11;

[0074] Fourth, the second adjusting bolt 125 and the third adjusting bolt 126 are respectively guided through the first adjusting hole 1233 and the second adjusting hole 1234 to be screwed with the first tilting head 1211a and the second tilting head 1211b on the locking portion 1211; then, the second adjusting bolt 125 is rotated to make the second adjusting bolt 125 move axially along the first tilting head 1211a, driving the inclined surface of the inclined opening 123a to be pressed on the first tilting head 1211a, driving the left expansion block 1231 and the right expansion block 1232 to move back to each other, so as to expand and tighten the inner wall of the front fork sleeve 2 in the radial direction; then, similarly, the third adjusting bolt 126 is rotated to drive the left expansion block 1231 and the right expansion block 1232 to move back to each other, so as to expand and tighten the inner wall of the front fork sleeve 2 in the radial direction, at which time the handlebar body 11 will be suspended and constrained on the front fork sleeve 2, completing the fixation of the front fork sleeve 2 and the limiting body 121;

[0075] The order of the third and fourth steps above can be selected by the user; the second adjusting bolt 125 and the third adjusting bolt 126 can be tightened first to complete the fixation of the front fork sleeve 2 and the limiting body 121, and then the first adjusting bolt 124 can be tightened to fix the front fork sleeve 2 and the handlebar body 11;

[0076] Finally, the pressure cover 4, the decorative cover 5 and the locking portion 1211 can be screwed and locked by a bolt to complete the Figure 2 The utility model has stable structural strength, can effectively ensure riding safety and bicycle quality, and after the installation of the handlebar assembly and the front fork sleeve 2 is completed, the originally exposed structural parts can be hidden, making the bicycle more beautiful as a whole.

[0077] The description of the above specification and embodiments is used to explain the protection scope of the utility model, but does not constitute a limitation on the protection scope of the utility model. Through the enlightenment of the utility model or the above embodiments, ordinary technicians in this field can obtain modifications, equivalent replacements or other improvements to the embodiments of the utility model or part of the technical features thereof through logical analysis, reasoning or limited experiments, which should be included in the protection scope of the utility model.

Claims

1. A hidden handlebar assembly for a bicycle, which is used to drive the front fork sleeve of the bicycle to rotate synchronously; the handlebar assembly comprises a handlebar body and a locking assembly, wherein the handlebar body is fixed to the front fork sleeve by the locking assembly; the characteristics are: The locking assembly comprises a limiter, a guide block, an expansion group, a first adjustment bolt and a second adjustment bolt; The limiting body is arranged across the front fork sleeve and forms a locking part and an assembly part located on the inner and outer wall surfaces of the front fork sleeve; the assembly part and the locking part respectively correspond to the inclined surfaces of the guide block and the expansion group; A guide block is installed between the handlebar body and the outer peripheral wall of the front fork sleeve, and the guide block is driven to move relative to the inclined surface of the assembly part through the circumferential rotation of the first adjusting bolt, so that the side wall of the guide block is pressed against the handlebar body and the assembly part is tightened against the outer peripheral wall of the front fork sleeve; The expansion group is built into the front fork sleeve and connected with the locking part through the second adjusting bolt, and the expansion group is driven to expand the inner wall of the front fork sleeve radially by the inclined surface cooperation.

2. A hidden handlebar assembly for a bicycle as claimed in claim 1, characterized in that: It also includes a lifting body, a clamping cavity for placing the lifting body is formed at the bottom of the guide block, the lifting body is restricted from rotating by the guide block in the clamping cavity, the first adjustment bolt passes through the assembly portion and is passed through the guide block and is threadedly connected to the lifting body; when the first adjustment bolt rotates circumferentially, the lifting body moves along the axial direction of the first adjustment bolt and drives the guide block to move relative to the inclined surface on the assembly portion.

3. A hidden handlebar assembly for a bicycle as claimed in claim 2, characterized in that: The lifting body is cylindrical, and the shape of the clamping cavity matches the shape of the lifting body; the lifting body has an assembly hole passing through the middle end, the axis of the assembly hole is perpendicular to the axis of the lifting body, and the first adjustment bolt is threadedly connected to the lifting body through the assembly hole.

4. A hidden handlebar assembly for a bicycle as claimed in claim 2, characterized in that: The assembly part and the guide block are respectively formed with mutually connected moving holes, the first adjusting bolt is simultaneously passed through the moving holes of the assembly part and the guide block and is screwed to the lifting body, and a displacement gap is formed between the first adjusting bolt and the hole wall of the moving hole; when the lifting body moves along the axial direction of the first adjusting bolt, the lifting body drives the guide block to move on the displacement gap, so that the guide block can be displaced on the inclined surface of the assembly part.

5. A hidden handlebar assembly for a bicycle as claimed in claim 2, characterized in that: A countersunk groove is arranged on the upper surface of the assembly part. When the first adjusting bolt passes through the assembly part, the first adjusting bolt is clamped on the countersunk groove to be axially limited on the assembly part.

6. A hidden handlebar assembly for a bicycle as claimed in claim 1, characterized in that: The limiting body also includes a connecting portion located above the tube wall of the front fork sleeve; the assembly portion and the locking portion are respectively formed at both ends of the connecting portion; the assembly portion is bent and moved on the connecting portion to apply a supporting force to the outer peripheral wall of the front fork sleeve, and the supporting force cooperates with the expansion force applied by the expansion group to the inner wall of the front fork sleeve to clamp the tube wall of the front fork sleeve.

7. A hidden handlebar assembly for a bicycle according to any one of claims 1 to 6, characterized in that: The expansion group includes a left expansion block and a right expansion block, which are arranged correspondingly and surrounded by a first adjustment hole. The outlet end of the first adjustment hole has an inclined opening, and the locking portion cooperates with the inclined surface of the inclined opening; the second adjustment bolt is guided through the first adjustment hole and is threadedly connected to the locking portion, and drives the inclined surface of the inclined opening to be pressed onto the locking portion through circumferential rotation, driving the left expansion block and the right expansion block to move back to back with each other, so as to radially expand the inner wall of the front fork sleeve.

8. A hidden handlebar assembly for a bicycle as claimed in claim 7, characterized in that: The inlet end of the first adjustment hole also has an inclined opening, and the second adjustment bolt cooperates with the inclined surface of the inclined opening; the locking part has a first inclined head threadedly connected to the second adjustment bolt, and the first inclined head cooperates with the inclined surface of the inclined opening at the outlet end of the first adjustment hole.

9. A hidden handlebar assembly for a bicycle as claimed in claim 8, characterized in that: The locking portion is also provided with a second tilting head, and the first tilting head and the second tilting head are symmetrically arranged on the left and right; the left expansion block and the right expansion block are also surrounded by a second adjustment hole corresponding to the second tilting head; a third adjustment bolt is passed through the second adjustment hole, and the third adjustment bolt drives the left expansion block and the right expansion block to radially tighten the inner wall of the front fork sleeve through circumferential rotation, so that the upper surface of the left expansion block and the right expansion block remains flush with the horizontal plane.

10. A hidden handlebar assembly for a bicycle as claimed in claim 1, characterized in that: The handlebar body is formed with a receiving groove, which is located between the handlebar body and the outer peripheral wall of the front fork sleeve. The side position of the receiving groove is connected with a through hole for assembling with the front fork sleeve.

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