TWM619477U - End plug assembly for bicycle handlebar tube - Google Patents

Abstract

An end plug assembly for a bicycle handle tube, which mainly includes an elastic expansion piece, an inner support piece, an end plug and a fastening bolt; The positioning ribs are embedded in the plurality of positioning grooves opposite to the elastic expansion member, so that the inner support member can only move along the axial direction; the end plug can be used to cover the opening of the handle tube and connect The elastic expansion pieces are embedded and positioned with each other; the fastening bolts can be inserted through the end plug and the elastic expansion pieces in sequence and then screwed to the inner support member, thereby linking the inner support member to move along the axial direction, and then resist The wing-shaped pressing parts of the top propped open are tightly pressed against the inner peripheral wall of the handle tube. Accordingly, the end plug assembly can be firmly and reliably installed on the end of the handle tube.

Description

End plug assembly for bicycle handle tube

This creation relates to an accessory for a bicycle handle tube, especially an end plug assembly used to seal the opening of the bicycle handle tube.

As we all know, in order to prevent rainwater, dust and various foreign matter from entering the bicycle handle tube, while improving the aesthetics of appearance, various end plugs or end plug components are usually installed at the two ends of the handle tube to close the opening.

A common end plug is integrally molded with plastic materials. It can be forcibly embedded and fixed in the opening of the handle tube in a tight-fitting manner. The main advantages are low price and light weight. The disadvantage is that the installation structure is not reliable and easy to be caused by the riding process. The vibration or various collisions cause looseness and fall off, and its added value is low, and it is often used as a gift.

In addition, some end plugs are fixed together by the metal hoop that locks the grip cover. For example, a vehicle grip fixing structure disclosed in the Republic of China Patent Certificate No. M301837 (referred to as Patent Case 1) has its biggest disadvantage. : It must be matched with a special metal hoop. For a grip cover that is not fixed with a metal hoop, the grip cover cannot be used alone.

In addition, the Republic of China Patent Certificate No. M522174 U New Patent (Patent Case 2 for short) discloses a bicycle grip end cover, which includes an end cover body, a nut that is contained in the end cover body and is restricted from rotating, and a After penetrating the body of the end cover from the outside to the inside, the bolts are screwed to the nut. By tightening the bolts, the restricted rotation of the nut can be made to follow the end cover. The lateral movement inside the body forces the blocks formed by the plurality of slits on the end cap body to expand outward, and then press against the inner wall of the bicycle handlebar tube.

The end cap of the above-mentioned patent case 2 can be applied to a grip sleeve that does not use a metal hoop. In other words, the end cap can be separately installed and fixed to the handle tube without using a metal hoop. However, this structure still has some Disadvantages, for example, the head of the bolt must be matched with the accommodating space of the disc-shaped part of the end cap body and the concave hook part. Therefore, the bolt is a special product, not a standard product, and its parts cost is quite high.

Secondly, the bolt has a large head, which not only increases the weight, but also fails to meet the requirements of lightweight, and the appearance is very rough and the visual aesthetics is not good.

Furthermore, although a polygonal horn hole is formed inside the end cap body, but due to the tapered design of the horn hole, only a small part of the inner side of the nut and the horn hole form a restrictive rotation function. The error value of the mutual fit is too large, or the horn hole is squeezed by the nut during the bolt rotation process to expand excessively, which may cause the nut to lose its rotation restriction, causing the nut to rotate synchronously with the bolt. If there is no lateral movement, the end cap body will lose its pressing effect.

In addition, the radial position of the outer peripheral wall of the nut for abutting the horn hole does not change. Therefore, every time the bolt is tightened, the nut will only make each section of the end cover body slightly outward. The breadth is expanded, so that the user has to turn more turns to complete the tightening effect. On the contrary, they must turn more turns to smoothly loosen and disassemble. The tightening operation must take a longer time, especially When the inner diameter of the handle tube is large, it may even be unable to be installed and fixed due to insufficient expansion.

This creation provides an end plug assembly for a bicycle handle tube, which mainly includes an elastic expansion piece, an inner support piece, an end plug and a fastening bolt; A plurality of limiting ribs are embedded in a plurality of limiting grooves arranged opposite to the elastic expansion member, so that the inner support member can only move along the axial direction; the end plug can be used to cover the opening of the handle tube end , And interlocking and positioning with the elastic expansion member; the fastening bolt can be sequentially extended through the end plug and the elastic expansion member and then screwed to the inner support member, thereby linking the inner support member to move along the axial direction , And then prop up each wing-shaped pressing part so that it can be pressed tightly against the inner peripheral wall of the handle tube.

The end plug assembly provided by this creation can be separately installed on the bicycle handle tube without any metal hoops, so it can be installed and disassembled freely and has a wide range of applications.

Secondly, the fastening bolts of this creation can be made of general specifications, and special products are not required. Therefore, the cost of parts is low and it is economical. At the same time, compared with the conventional bolts and special products, the fastening bolts of this creation have a larger head design. The bolt is light in weight, can meet the requirements of light weight, and has a better aesthetic appearance.

Furthermore, the elastic expansion member and the inner support member of this creation are interlocked and restricted by a plurality of limiting grooves and limiting ribs between each other, so as to only allow the inner support member to move along the axial direction, but restrict The rotation function allows the limit structure between each other to have a larger error value in the size matching. In this way, there is no need to worry about the limit function being degraded or lost, so that the top support function can be maintained stably and normally.

1: End plug assembly

2: handle tube

2a: End edge

2b: opening

2c: inner peripheral wall

10: Elastic expansion piece

11: End wall

111: The first positioning part

112: Uplift

113: Positioning rib

12: Cylindrical wall

121: inner edge

122: limit groove

123: Wing-shaped compression part

124: Pressing ribs

13: Internal barrel groove

131: Gorge

14: Piercing

20: inner support

21: Peripheral wall

22: screw hole

23: Positioning plug

24: Limiting rib

25: Top support part

26: Shaft tube

30: end plug

31: Covering part

311: Stop Ring Wall

32: Impaction site

321: second positioning part

322: Depressed part

323: positioning groove

33: Piercing hole

331: groove part

332: Perforated part

40: Fastening bolt

41: Screw head part

42: Screw part

[Figure 1] is the three-dimensional appearance combination diagram of the end plug assembly of this creation.

[Figure 2] is a three-dimensional exploded view of the end plug assembly of this creation.

[Figure 3] is another three-dimensional exploded view of the end plug assembly of the author.

[Figure 4] is a three-dimensional cross-sectional view of the end plug assembly of the present invention along a limiting groove of the elastic expansion member.

[Figure 5] is a cross-sectional side view of Figure 4 of this creation.

[Figure 6] is another side cross-sectional view of the end plug assembly of this creation.

[Figure 7] is a three-dimensional cross-sectional view of the elastic expansion piece of this creation.

[Figure 8] is a side cross-sectional view of the assembled state of the end plug assembly of the invention installed on the handle tube.

As shown in Figures 1 to 7, this creation provides a preferred embodiment of an end plug assembly for a bicycle handle tube. The end plug assembly 1 of this embodiment mainly includes an elastic expansion member 10, an inner support member 20, and an end plug 30 And a fastener 40; among them:

The elastic expansion member 10 is generally cylindrical, and has one end side wall 11, a cylindrical wall 12 extending integrally around the end side wall 11, and a boundary between the end side wall 11 and the cylindrical wall 12 Between the inner cylindrical groove 13 and a penetrating hole 14 that penetrates the end wall 11 and communicates with the inner cylindrical groove 13; the outer wall surface of the end wall 11 is provided with a first positioning portion 111; the cylindrical The inner end 121 of the wall 12 is provided with at least two limiting grooves 122 extending in the axially outward direction and extending close to the end wall 11, and the limiting grooves on the cylindrical wall 12 adjacent to each other Each of the grooves 122 is formed with a wing-shaped pressing part 123 for elastic expansion; the inner cylindrical groove 13 has a plug 131 formed at the inner end 121 of the cylindrical wall 12.

The inner support member 20 is generally a plug-like body, and has an outer peripheral wall 21 and a screw hole 22 radially penetrating therethrough; a positioning plug portion is formed on the outer peripheral wall 21 opposite to the cylindrical wall 12 side 23. It can be caulked and positioned inward from the plug opening 131 of the elastic expansion member 10; the outer peripheral wall 21 is further formed with at least two limiting ribs 24 and a top support portion 25 adjacent to the positioning plug; Limit convex The ribs 24 are respectively embedded and locked in the limiting groove 122, so that the inner support member 20 can be restricted from rotating, but allows relative movement along the axial direction on the elastic expansion member 10; the top support part 25 can be used for It is embedded in the inner cylindrical groove 13 so that the wing-shaped pressing part 123 can be pushed apart to produce elastic expansion.

The end plug 30 has a cap part 31, a caulking part 32 axially extending from the cap part 31, and a penetration hole 33 penetrating the cap part 31 and the caulking part 32; the seal The cover part 31 can be used to stop at the end edge 2a of the handle tube 2 so as to close the opening 2b at the end edge 2a of the handle tube 2; A second positioning portion 321 is formed for inserting and positioning the first positioning portion 111 of the elastic expansion member 10 to restrict the elastic expansion member 10 from rotating.

The fastening bolt 40 can be inserted inward from the penetration hole 33 of the end plug 30, and pass through the penetration hole 14 and the inner cylindrical groove 13 of the elastic expansion member 10 in sequence, and then interact with the inner The screw holes 22 of the bracing member 20 are screwed and locked with each other, forcing the inner bracing member 20 to forcibly move along the axial direction into the internal cylindrical groove 13, so that the top bracing part 25 can press against the top to open the wing-shaped compression parts 123, and then tightly fixed to the opposite part of the inner peripheral wall 2c of the handle tube 2, as shown in FIG. 8.

In this embodiment, the outer side wall of the end wall 11 of the elastic expansion member 10 has a raised portion 112, and the raised portion 112 is protrudingly provided with a plurality of positioning ribs 113, and the raised portion 112 and the positioning protrusion The ribs 113 collectively form the first positioning portion 111; the inner end of the caulking portion 32 of the end plug 30 has a recessed portion 322, the recessed portion 322 is recessed with a plurality of positioning grooves 323, and the recessed portion 322 and the positioning groove 323 together form the second positioning portion 321, and the recessed portion 322 can be used for the protruding portion 112 to be caulked inside, and the positioning grooves 323 can be used for the positioning ribs 113, respectively. The relative embedded card is positioned inside.

Furthermore, the protruding part 112 of this embodiment is equiangularly distributed with four positions Convex ribs 113; Four positioning grooves 323 are equiangularly distributed in the recessed portion 322.

Through the structural design of the first positioning portion 111 and the second positioning portion 321, it can be ensured that the end plug 30 and the elastic expansion member 10 form a stable and reliable positioning structure with each other, and the positioning structure provides a good assembly operation and combination It can avoid loosening, damage or skewing between each other during the rotating operation, and facilitate the stability of the subsequent installation on the handle tube 2.

In this embodiment, the cylindrical wall 12 of the elastic expansion member 10 is equiangularly equipped with four limiting grooves 122; the inner support member 20 is equiangularly provided with four limiting ribs on the outer peripheral wall 21 twenty four. By means of the multiple equiangular configuration design of the limiting groove 122 and the limiting rib 24, it can be ensured that the wing-shaped pressing part 123 formed on the elastic expansion member 10 can produce suitable deflection under the appropriate expansion force. The amount of sexual deformation to meet the tight fixation requirements. Secondly, it can also ensure that the inner support 20 can be assembled and positioned on the elastic expansion member 10 more accurately and smoothly, preventing the inner support 20 from being deflected and causing uneven tightening, because the uneven tightening The situation is prone to false locking. Furthermore, it is also possible to disperse the force received between each relative limit groove 122 and the limit rib 24 during the locking operation, so as to avoid damage due to excessive force, thereby ensuring the quality of assembly and use operations. .

In this embodiment, the limiting rib 24 of the inner brace 20 is located at the top bracing part 25 and a part of it extends to the positioning plug 23. It can be seen from this that in the pre-assembly before the locking operation, once the positioning plug 23 of the inner brace 20 is inserted into the inner cylindrical groove 13 of the elastic expansion member 10, it means that a part of the limiting ribs are arranged on it. 24 can be embedded in each of the opposing limit grooves 122 at the same time. In other words, before the tightening bolt 40 is locked, it can be ensured that the inner support 20 and the elastic expansion member 10 are in a restricted relative rotation state. Therefore, the user can be ensured that in the subsequent locking operation, The inner support 20 can produce the expected axial displacement effect, which can avoid the inner support The piece 20 produces an uncontrolled idling phenomenon.

In this embodiment, the central part of the inner support 20 extends inwardly with a shaft tube 26. The screw hole 22 is formed. With the design of the shaft tube 26 protruding inwardly beyond the inner end of the top support part 25, the threaded length of the screw hole 22 can be prolonged. On the one hand, it can ensure that the inner support 20 and the fastening bolt 40 are between each other. It has a high screw strength, and on the other hand, it can prevent the inner support 20 from being deflected before the locking operation, thereby ensuring the stability of the assembly between the end plug assembly 1 and the handle tube 2 and avoiding False lock is produced, or it is easy to loosen during operation.

In this embodiment, the outer peripheral wall of the cylindrical wall 12 of the elastic expansion member 10 is provided with a plurality of compression ribs 124 distributed along the axial direction, because the compression ribs 124 at least cover the wing-shaped Therefore, the frictional resistance between each wing-shaped pressing part 123 and the opposite part of the inner peripheral wall 2c of the handle tube 2 can be increased, so that the elastic expansion member 10 has a larger rotation resistance, thereby preventing the end plug After the assembly operation is completed, the component 1 becomes loose, especially the phenomenon of loose rotation.

In this embodiment, a stop ring wall 311 is formed on the inner end side of the cover part 31 of the end plug 30 connected to the caulking part 32, and the stop ring wall 311 can be used to stop the handle tube 2端边2a.

In this embodiment, the penetration hole 33 of the end plug 30 includes a groove portion 331 and a perforated portion 332 communicating with the groove portion 331; the fastening bolt 40 includes a screw portion 41 and a screw portion 42; The screw portion 42 can pass through the perforated portion 332 and the screw hole 22 of the inner support 20 is screwed together; the screw head portion 41 can be accommodated and positioned in the groove portion 331.

From the above description, it can be known that the end plug assembly 1 of this creation has the following features and achievable effects:

First, the end plug assembly 1 of this invention can be separately installed on the bicycle handle tube 2 without any metal hoops, so it can be installed and disassembled freely and has a wide range of applications.

Secondly, the fastening bolt 40 of the present invention can be made of general specifications, and no special products are required. Therefore, the cost of the parts is low and the cost is economical.

Third, since the fastening bolt 40 of this creation can be made of general specifications, it has a larger head design compared to conventional bolt special products. The fastening bolt 40 of this creation is not only lighter in weight, but also can meet the requirements of lighter weight. It has better appearance and beauty.

Fourth, the elastic expansion member 10 and the inner support member 20 of the present creation are interlocked and restricted by a plurality of the limiting grooves 122 and the limiting ribs 24 between each other, so as to allow only the inner support member 20 to be along the axis. To move, but restrict its rotation function, so the limit structure between each other is allowed to have a larger error value in the size matching, so there is no need to worry about the limit function being degraded or lost. In other words, it can be ensured that the inner bracing member 20 can be stably driven axially inside the elastic expansion member 10, so that its top bracing function can be maintained stably and normally.

Fifth, the inner support member 20 of the present creation can be designed by the positioning plug 23 so that it can be pre-impacted and positioned at the plug opening 131 of the elastic expansion member 10, in addition to avoiding the disorganization of the structure before installation, It is also helpful for subsequent installation operations. At the same time, it is designed with a larger radial size of the top support part 25, which can be used to tighten the fastening bolt 40 within a short axial movement stroke. Each wing-shaped pressing part 123 of the elastic expansion member 10 expands to a larger extent, and then enters the pressing stage more quickly. In other words, the above design can reduce the action time of the idle stroke, so that the inner support 20 only needs a short axial movement stroke to achieve the expected tightening effect, so its tightening operation is faster and can be effectively shortened Tightening operation time.

Sixth, as mentioned above, since the inner support 20 can move in a short axial stroke Internally, each wing-shaped pressing part 123 of the elastic expansion member 10 has a larger external expansion and pressing effect, which means that the handle tube 2 to which the end plug assembly 1 of the present invention can be applied is larger, and There is no need to worry about the situation that the pipe cannot be installed due to the excessively large pipe diameter.

In summary, this creation has excellent creative practicability among similar products. At the same time, we have checked the relevant technical materials or patent documents at home and abroad, and have not found the same structure to be disclosed first. Therefore, this creation actually has a new model. For patent requirements, Yan filed an application in accordance with the law. However, the above are only part of the feasible embodiments of this creation. Any equivalent structural changes made by applying this creation specification and the scope of patent application should be included in the patent scope of this creation.

1: End plug assembly

10: Elastic expansion piece

12: Cylindrical wall

121: inner edge

122: limit groove

123: Wing-shaped compression part

13: Internal barrel groove

20: inner support

22: screw hole

23: Positioning plug

24: Limiting rib

25: Top support part

26: Shaft tube

30: end plug

31: Covering part

311: Stop Ring Wall

32: Impaction site

321: second positioning part

322: Depressed part

323: positioning groove

33: Piercing hole

40: Fastening bolt

41: Screw head part

42: Screw part

Claims (9)

An end plug assembly for a bicycle handle tube, comprising: An elastic expansion member is generally cylindrical, and has an end wall wall, a cylindrical wall wall integrally extending from the periphery of the end side wall, an internal cylindrical groove defined between the end side wall and the cylindrical wall, and A penetrating hole that penetrates the end wall wall and communicates with the inner cylindrical groove; the outer side wall of the end side wall is provided with a first positioning portion; the inner end edge of the cylindrical wall is axially outward There are at least two limiting grooves extending close to the end side wall, and a wing-shaped pressing part for elastic expansion can be formed between the adjacent limiting grooves of the cylindrical wall; the inner part The cylindrical groove is formed with a plug opening at the inner end edge of the cylindrical wall; An inner support member, generally in the form of a plug, with an outer peripheral wall and a radially penetrating screw hole; a positioning plug portion is formed on the outer peripheral wall opposite to the cylindrical wall, which can be elastically expanded The plug opening of the component is caulked and positioned inside; the outer peripheral wall is further formed with at least two limiting ribs, and a top bracing part adjacent to the positioning plug; the limiting ribs are respectively inserted and limited in the In the limiting groove, the inner bracing member can be restricted from rotating, but the elastic outer bracing member is allowed to move relative to each other in the axial direction; The tight part can be pushed apart to produce elastic expansion; One end plug has a cap part, a caulking part axially extending from the cap part, and a penetration hole penetrating the cap part and the caulking part; the cap part can be stopped by the The end edge of the handle tube is used to close the opening at the end edge of the handle tube; the caulking part can be inserted into the handle tube, and a second positioning part is formed on the inner end surface of the caulking part, which can be positioned in the elastic expansion The first positioning part of the piece, thereby restricting the rotation of the elastic expansion piece; A fastening bolt can be penetrated inwardly from the penetration hole of the end plug, and pass through the penetration hole and the inner cylinder groove of the elastic expansion member in sequence, and then screw with the screw hole of the inner support member. Locking, forcing the inner support member to move forcibly along the axial direction into the inner cylinder groove, so that its top support part can press against the top to prop up each wing-shaped pressing part, and then tightly fixed to the inner peripheral wall of the handle tube The relative position. The end plug assembly for a bicycle handle tube according to claim 1, wherein the outer side wall of the end wall of the elastic expansion member has a protruding part, and the protruding part is provided with a plurality of positioning ribs, and the protruding part and the The positioning ribs together form the first positioning portion; the inner end of the impacted portion of the end plug has a recessed portion, and a plurality of positioning grooves are recessed in the recessed portion, and the recessed portion and the positioning The grooves collectively form the second positioning portion, and the recessed portion can be used for the protruding portion to be inserted into, and the positioning grooves can be used for the positioning ribs to be respectively inserted and positioned in the inner portion. The end plug assembly for a bicycle handle tube according to claim 2, wherein the protruding part is equiangularly distributed with four positioning ribs; the concave part is equiangularly distributed with four positioning grooves. The end plug assembly for a bicycle handle tube according to claim 1, wherein the cylindrical wall of the elastic expansion member is equiangularly arranged with four limiting grooves; the inner support member is equiangularly arranged with four limiting grooves on the outer peripheral wall Limiting ribs. The end plug assembly for a bicycle handle tube according to claim 1, wherein the limiting rib of the inner brace is located at the top brace part, and a part of it extends to the positioning plug part. The end plug assembly for a bicycle handle tube according to claim 1, wherein a shaft tube extends inwardly from the central part of the inner support member, and the end of the shaft tube extends inwardly beyond all The inner end of the top support part, and the screw hole is formed inside the shaft tube. The end plug assembly for a bicycle handle tube according to claim 1, wherein the outer peripheral wall of the cylindrical wall of the elastic expansion member is provided with a plurality of compression ribs distributed along the axial direction. The end plug assembly for a bicycle handle tube according to claim 1, wherein a stop ring wall is formed on the inner end side of the cover part of the end stop connected to the caulking part, and the stop ring wall can be stopped at the The end edge of the handle tube. The end plug assembly for a bicycle handle tube according to claim 1, wherein the penetration hole of the end plug includes a groove portion and a perforated portion communicating with the groove portion; the fastening bolt includes a screw head portion and a The screw part; the screw part can pass through the perforated part and the screw hole of the inner support member to be screwed together; the screw head part can be accommodated and positioned in the groove part.

Images