TWI392617B - Plug-in five-bowl and its components - Google Patents

Description

External five-way bowl and its components

The present invention relates to a bicycle component, and more particularly, to an external five-way bowl and its components.

The existing bicycle five-way bowl and its components are roughly divided into an inner hanging type and an outer hanging type. For example, the new patent of the Republic of China Bulletin No. 563661 discloses that there is an inner hanging five-way bowl which can be roughly installed when locked. Hidden inside the five-way pipe, and because it will be hidden inside the five-way pipe, there is no external space to rotate the five-way bowl. Generally, a plurality of tooth grooves are arranged in the inner ring of the outer end for the specific tool to be buckled. The driving operation is to lock the five-way bowl tightly in the end of the five-way pipe, and because there is no extra space inside the five-way bowl for mounting the bearing, the bearing must be installed from the inside of the five-way bowl, and then the middle tube is supported. The inner end of the outer ring of the five-way bowl at both ends is used to fix the bearing. However, the inner-mounted five-way bowl is limited in size because the bearing must be installed in the five-way pipe, and the load size is also limited. It is limited. If you want to increase the size, the diameter of the five-way pipe must also increase, but the weight will increase, and it will not be able to achieve lightweight claims, and the appearance will be cumbersome; In the case, the external five-way bowl will be selected. For example, the new patent of the Republic of China certificate number M296817 reveals that there is an external five-way bowl. Because the outer section is exposed, the outer part of the exposed part can be used. The wall ring cloth is provided with a plurality of card slots for the specific tool to be buckled and driven, and the bearing can also be installed and positioned by using the inner space of the outer section to solve the above problem.

However, the existing external five-way bowl assembly, especially the five-way bowl, has to be provided with a plurality of card slots in the exposed portion of the ring, so it is necessary to appropriately increase the wall thickness to improve the torsional strength, but also relatively In addition, the above-mentioned card slot is prone to wear and tear during the operation of the force application, which affects the appearance; the existing five-way bowl has a poor sealing effect, and the pivoting structure is prone to error gap, which affects the smoothness of the rotation, There is room for improvement.

The present invention provides an external five-way bowl having an inner portion having a screwing portion that can be screwed to the opposite end of the five-way tube, and an outer portion having a protruding portion that can be exposed to the outside, wherein a receiving groove is formed therein; The inner peripheral wall of the inside of the five-way bowl is disposed on the inner peripheral wall of the inner side of the accommodating groove, and is provided with an inner cavity operating portion for the specific tool to extend from the outer side and the rear joint to drive the five-way bowl and the five-way tube to be tightly locked.

The invention further provides an external five-way bowl assembly, wherein a ball bearing can be installed in the accommodating groove, a cushion sleeve is embedded on the outer side of the ball bearing, and a dustproof ring is arranged between the outer sleeve of the cushion sleeve and the ball bearing to form a dustproof ring. Five-way bowl assembly with a capping effect.

The five-way bowl provided by the invention has an inner locking type design, so that the wall thickness of the protruding portion can be appropriately reduced and thinned to achieve a lightweight effect, and can be appropriately hidden when the operation portion is worn. It does not look from the outside, so it has an external aesthetic effect.

As shown in FIG. 1 and FIG. 2, the first embodiment of the external five-way bowl of the present invention is substantially the same as the conventional one, and can be respectively installed on the left and right ends of a five-way pipe 20, as shown in the figure. 3 is shown. The five-way bowl 10 of the present embodiment has a sleeve shape, and has a screwing portion 11, a protruding portion 12 and an inner cavity operating portion 13; wherein the screwing portion 11 is disposed inside the five-way bowl 10 In the segment, the outer peripheral wall 111 is provided with a length of external thread 112 for screwing into the opposite end of the five-way pipe 20.

The protruding portion 12 is disposed on the outer side of the five-way bowl 10, and has an outer diameter larger than the outer diameter of the screwing portion 11, and a blocking wall 101 is formed between the outer peripheral wall 121 and the outer peripheral wall 111 of the screwing portion 11. The opposite end wall edges of the five-way pipe 20 are mutually blocked, so that the protruding portion 12 is exposed to the outside; and the receiving portion 12 is further formed with a receiving groove 122 therein.

The inner cavity operating portion 13 is disposed on the inner peripheral wall of the five-way bowl 10 on the inner side of the accommodating groove 122, and can be appropriately connected by a specific tool from the outer side, so that the five-way bowl 10 can be driven by the inner side. And the opposite ends of the five-way pipe 20 are elastically locked to each other; the inner cavity operating part 13 of the embodiment adopts a hexagonal wall surface design, and can be matched with a general specification or a special specification of a hexagonal wrench according to different specifications and sizes. However, it is not limited to this, and it can also be designed as a polygonal wall surface such as a pentagon or a heptagonal shape, and can be matched with a specific tool that can be mutually matched to each other to be inserted into a card. Of course, it is not limited to a polygonal wall surface, and a ring-shaped wall surface may be provided with a plurality of different types of connection structures such as a plurality of card slots, and the specific tool can be rotated. In addition, the inner cavity operating portion 13 is preferably disposed at an inner boundary of the screwing portion 11 and the protruding portion 12, so that the interior of the five-way bowl 10 has an appropriate space at the inner side of the inner cavity operating portion 13 for configuration. A sealing tube, especially when the perforation is provided on the five-way pipe, can achieve the anti-seepage sealing effect. Since the structural design belongs to the prior art and is not the technical scope to be explored by the present invention, it is not here. More details.

As shown in FIGS. 4 to 8, the external five-way bowl 10 of the first embodiment of the present invention can be assembled to form an external five-way bowl assembly. The five-way bowl assembly of the first embodiment includes the first embodiment described above. The five-way bowl 10, and a ball bearing 30, a cushion sleeve 40 and a dustproof ring 50; wherein: the ball bearing 30 can be installed in the receiving groove 122 of the protruding portion 12 to make a mounting through The mandrel 60 of the ball bearing 30 is relatively rotatable with the five-way bowl 10 through the ball bearing 30 as shown in FIG.

The ball bearing 30 of the embodiment and the accommodating groove 122 of the protruding portion 12 are tightly nested, and the inner diameter of the inner ring 31 of the ball bearing 30 is larger than the maximum inner diameter portion of the inner cavity operating portion 13 The above specific tools are thus passed.

In the five-way bowl 10 of the first embodiment, the inner side wall of the receiving groove 122 of the protruding portion 12 is further formed with a class groove 123, as shown in FIG. 1, thereby ensuring the inner ring of the ball bearing 30. The inner side wall 311 of the 31 can be brought into contact with the five-way bowl 10 with a proper gap without being in contact with the five-way bowl 10, that is, the inner ring 31 and the outer ring 32 of the ball bearing 30 can be smoothly rotated relative to each other. Do not interfere with each other.

The cushion sleeve 40 has a sleeve portion 41 having a smaller outer diameter and a side cover portion 42 having a larger outer diameter; the outer peripheral wall 411 of the sleeve portion 41 can be nested and tightly engaged with the inner ring of the ball bearing 30. The inner peripheral wall 421 of the side cover portion 42 can block the outer side wall 313 of the inner ring 31 of the ball bearing 30, and is separated from the outer side wall 321 of the outer ring 32 by a first gap S1, and the outer peripheral wall thereof The 422 is also separated from the inner peripheral wall of the protruding portion 12 by a second gap S2; the inner peripheral wall of the cushion 40 is further recessed with at least one annular groove 43. In this embodiment, a second ring groove 43 is provided, and each An annular sealing gasket 44 is mounted in a ring groove 43 and can be elastically compressed against the outer peripheral wall of the mandrel 60 so as to form a tightly coupled state with each other.

The dust ring 50 can be accommodated in the first gap S1 and the second gap S2. The dust ring 50 has a circumferential portion 51 and a radial portion 52. The annular portion 51 can be nested with the outer peripheral wall 422 of the side cover portion 42 of the cushion 40, and is opposite to the receiving groove 122. The inner peripheral wall is spaced apart from the outer peripheral wall 322 of the outer ring 32 of the ball bearing 30 by a suitable gap; the inner and outer side walls of the radial portion 52 can be adjacent to the outer side wall 421 and the ball of the opposite side cover portion 42, respectively. The outer side wall 321 of the outer ring 32 of the bearing 30 is approximately in contact with each other; in particular, since the cushion 40 and the dust ring 50 of the embodiment are made of rubber and plastic materials, the sliding property is good and the friction coefficient is small. Therefore, although the dustproof ring 50 is closely nested with the cushion sleeve 40 and is in close contact with the outer side wall 321 of the outer ring 32 of the ball bearing 30, the dustproof ring 50 does not affect the inner ring of the ball bearing 30. 31 smoothness of rotation.

As shown in FIG. 10, the five-way bowl assembly of the second embodiment of the present invention is substantially the same as that of the first embodiment except that the outer peripheral wall 322 of the outer ring 32 of the ball bearing 30 and the five-way bowl 10 are received. The inner peripheral walls of 122 are respectively inclined tapered surfaces which are mutually coincident, so as to be mutually urged when the ball bearings 30 are axially displaced toward the inside. In this embodiment, the axial pressing force is provided to the inner side by the crank that is assembled on the five-way bowl assembly, wherein the crank pushes the ball bearing 30 through the outer cushion 40.

Since the ball bearing 30 of the embodiment and the accommodating groove 122 of the five-way bowl 10 can be mutually urged by the inclined taper surface, the inner diameter of the inner ring 31 of the ball bearing 30 can be set smaller than the inner cavity operating portion 13. The maximum inner diameter portion allows the ball bearing 30 to be locked to the five-way pipe 20 by the embedded snap of the special tool through the inner operating portion 13 after the five-way bowl 10 is assembled, without prior assembly. The tight fitting operation of the ball bearing 30 makes the overall assembly more convenient, and the five-way bowl assembly of the second embodiment can adopt a smaller size than the ball bearing 30 mounted by the five-way bowl 10 of the first embodiment. Size ball bearings 30 to reduce weight.

As shown in FIG. 11, the five-way bowl assembly of the third embodiment of the present invention is substantially the same as that of the second embodiment, except that the outer portion of the inner ring 31 and the inner portion of the outer ring 32 of the ball bearing 30 are substantially The L-shaped structure is designed to make angular contact with the inner balls 33 respectively. With such an angular contact structure design, the ball bearing 30 can be subjected to the axial thrust generated by the crank lock, and the five-way bowl is When the receiving groove 122 is tapered, the inner ball 33 can still be firmly positioned in the axial position without causing a misalignment, so that the inner ring 31 and the outer ring 32 can be ensured. Smoothness of rotation.

The external five-way bowl 10 of the present invention utilizes the internal locking design formed by the structure of the inner cavity operating portion 13. Since the outer peripheral wall 121 of the protruding portion 12 is required to be provided with a conventional card slot, the protruding portion 12 can be disposed. The wall thickness is appropriately reduced and thinned to achieve a lightweight effect.

Since the above-described inner cavity operating portion 13 can be appropriately concealed inside the five-way bowl 10, even if it is slightly worn during operation, it is not clearly viewed from the outside, and at the same time has an external aesthetic effect.

The external five-way bowl 10 of the present invention can be further combined with the ball bearing 30, the cushion sleeve 40 and the dustproof ring 50 to form a five-way bowl assembly, and the cushion sleeve 40 and the dustproof ring 50 are designed to improve the sealing and dustproof effect of the side edges. The annular sealing gasket 44 mounted on the inner annular groove 43 of the cushion sleeve 40 can eliminate the installation gap between the outer peripheral wall of the mandrel 60 and the outer peripheral wall of the mandrel 60, so that the sleeves can be tightly connected to each other. The stability and smoothness of the rotation of the mandrel 60.

In summary, the present invention has excellent advancement and practicability in similar products, and at the same time, inspecting domestic and foreign technical materials on such structures, and the same structure or manufacturing method is not found in the literature. Therefore, the present invention already has the invention patent requirements, and submits an application according to law.

However, the above-mentioned embodiments are merely preferred embodiments of the present invention, and equivalent structural changes to the scope of the present invention and the scope of the claims are intended to be included in the scope of the present invention.

10. . . Five bowls

101. . . Stop wall

11. . . Screwing part

111. . . Peripheral wall

112. . . External thread

12. . . Protruding part

121. . . Peripheral wall

122. . . Locating slot

123. . . Class groove

13. . . Inner cavity operating part

20. . . Five-way pipe

30. . . Ball bearing

31. . . Inner ring

311. . . Inner side wall

312. . . Inner peripheral wall

313. . . Outer side wall

32. . . Outer ring

321. . . Outer side wall

322. . . Peripheral wall

33. . . Ball

40. . . Cushion cover

41. . . Bushing

411. . . Peripheral wall

42. . . Side cover

421. . . Inner ring wall

422. . . Peripheral wall

43. . . Ring groove

44. . . Annular gasket

S1. . . First gap

S2. . . Second gap

50. . . Dust ring

51. . . Circumferential part

52. . . Radial part

60. . . Mandrel

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a side cross-sectional view showing a five-way bowl of a first embodiment of the present invention.

Figure 2 is a side plan view of a five-way bowl in accordance with a first embodiment of the present invention.

Fig. 3 is a side cross-sectional view showing the two end portions of the five-way bowls of the first embodiment of the present invention, which are respectively mounted on a two-way pipe after being closely fitted with a bearing.

Figure 4 is a side plan view showing the state of the five-way bowl-mounted bearing of the first embodiment of the present invention.

Figure 5 is a partial side cross-sectional view showing the state of a five-way bowl mounted bearing and a cushion cover according to a first embodiment of the present invention.

Figure 6 is a side cross-sectional view showing a five-way bowl assembly in accordance with a first embodiment of the present invention.

Figure 7 is a side cross-sectional, exploded view of the five-way bowl assembly of the first embodiment of the present invention.

Figure 8 is a side cross-sectional view showing the left and right five-way bowl assemblies of the first embodiment of the present invention, respectively, mounted on the two ends of a five-way tube.

Figure 9 is a side cross-sectional view showing the inside of the cushion of Figure 8 with a mandrel.

Figure 10 is a side cross-sectional view showing a five-way bowl assembly in accordance with a second embodiment of the present invention.

Figure 11 is a side cross-sectional view showing a five-way bowl assembly in accordance with a third embodiment of the present invention.

10. . . Five bowls

101. . . Stop wall

11. . . Screwing part

111. . . Peripheral wall

112. . . External thread

12. . . Protruding part

121. . . Peripheral wall

122. . . Locating slot

123. . . Class groove

13. . . Inner cavity operating part

Claims (12)

The utility model relates to an external five-way bowl, which is substantially sleeve-shaped and has a screwing portion disposed on the inner side of the five-way bowl, and an outer thread is arranged on the outer peripheral wall for screwing on a five-way tube. a protruding portion disposed on the outer side of the five-way bowl, the outer diameter of which is larger than the outer diameter of the screwing portion, and a blocking wall formed between the outer peripheral wall and the outer peripheral wall of the screwing portion for The opposite end wall edges of the five-way pipe are mutually blocked and positioned to expose the protruding portion to the outside; the receiving portion is further formed with a receiving groove for mounting and positioning of a bearing; and an inner cavity operating portion is disposed on the five-way bowl The inner peripheral wall of the inner side of the accommodating groove can be appropriately connected by a specific tool from the outer side, so that the five-way bowl can be driven by the inner side, and then the opposite ends of the five-way pipe are elastically locked with each other. The outer five-way bowl according to the first aspect of the patent application, wherein the inner cavity operating portion is a polygonal wall surface. The outer five-way bowl according to the first aspect of the patent application, wherein the inner cavity operating portion is preferably disposed at an inner boundary between the screwing portion and the protruding portion. An external five-way bowl assembly comprises: a five-way bowl, substantially sleeve-shaped, and having a screwing portion disposed on an inner side of the five-way bowl, the outer peripheral wall of which is provided with a section of external thread for snail Cooperating with the inner end of the opposite end of the five-way pipe; a protruding portion is disposed on the outer side of the five-way bowl, the outer diameter of which is larger than the outer diameter of the screwing portion, and a block is formed between the outer peripheral wall and the outer peripheral wall of the screwing portion a sealing wall for mutually dislocating from the opposite end wall edge of the five-way pipe, so that the protruding portion is exposed to the outside; a protruding groove is further formed inside the protruding portion; and an inner cavity operating portion is disposed on the five-way bowl The inner peripheral wall of the inner side of the accommodating groove is appropriately connected by a specific tool from the outer side, so that the five-way bowl can be driven by the inner side, and then the opposite ends of the five-way pipe are elastically locked with each other; The bearing is mounted in the receiving groove of the protruding portion, so that a mandrel mounted through the ball bearing can be rotated relative to the five-way bowl through the ball bearing. The outer five-way bowl assembly according to the first aspect of the patent application, wherein the ball bearing and the receiving groove of the protruding portion are tightly nested, and the inner diameter of the inner ring of the ball bearing is larger than the inner working portion of the inner cavity The maximum inner diameter portion is available for the specific tool described above. The outer five-way bowl assembly according to claim 5, wherein the inner side wall of the receiving groove of the protruding portion is formed with a class groove, and the inner side wall of the inner ring of the ball bearing is opposite with a predetermined gap. The outer five-way bowl assembly according to claim 5, further comprising a cushion sleeve and a dustproof ring; the cushion sleeve has a sleeve portion with a smaller outer diameter, and a side cover with a larger outer diameter The outer peripheral wall of the sleeve portion can be nested and tightly pressed against the inner peripheral wall of the inner ring of the ball bearing, and the inner ring wall of the side cover portion can be blocked from being positioned on the outer side wall of the inner ring of the ball bearing and outside the outer ring The wall is separated from the first gap, and the outer peripheral wall is also separated from the inner peripheral wall of the protruding portion by a second gap; the inner peripheral wall of the cushion sleeve is further recessed with at least one annular groove, and is mounted and positioned in the annular groove. The annular sealing gasket can be elastically compressed against the outer peripheral wall of the mandrel to form a tight joint state with each other; the dustproof ring can be accommodated in the first gap and the second gap, and has a connected ring a portion and a radial portion; the circumferential portion may be nested tightly with the outer peripheral wall of the side cover portion of the cushion sleeve, and spaced apart from the inner circumferential wall by a predetermined gap from the accommodating groove, and the outer circumference of the outer ring of the ball bearing The wall is slightly in contact with the fit; The inner and outer side walls of the radial portion may be in approximate contact with the inner side wall of the opposite side cover portion and the outer side wall of the outer ring of the ball bearing. The outer five-way bowl assembly according to the first aspect of the patent application, wherein the outer peripheral wall of the outer ring of the ball bearing and the inner peripheral wall of the accommodating groove are respectively inclined to each other to produce a tapered tapered surface. The outer five-way bowl assembly according to item 8 of the patent application scope, wherein the inner diameter of the inner diameter of the ball bearing is smaller than the largest inner diameter portion of the inner cavity operating portion. The outer five-way bowl assembly according to the eighth aspect of the patent application, wherein the outer portion of the inner ring of the ball bearing and the inner portion of the outer ring are substantially L-shaped, and can form angular contact with the inner balls respectively. The outer five-way bowl assembly according to item 8 of the patent application scope further includes a cushion sleeve and a dustproof ring; the cushion sleeve has a sleeve portion with a smaller outer diameter, and a side cover with a larger outer diameter. The outer peripheral wall of the sleeve portion can be nested and tightly pressed against the inner peripheral wall of the inner ring of the ball bearing, and the inner ring wall of the side cover portion can be blocked from being positioned on the outer side wall of the inner ring of the ball bearing and outside the outer ring The wall is separated from the first gap, and the outer peripheral wall is also separated from the inner peripheral wall of the protruding portion by a second gap; the inner peripheral wall of the cushion sleeve is further recessed with at least one annular groove, and is mounted and positioned in the annular groove. The annular sealing gasket can be elastically compressed against the outer peripheral wall of the mandrel to form a tightly coupled state with each other; the dustproof ring can be accommodated in the first gap and the second gap, and has a connected ring a portion and a radial portion; the circumferential portion may be nested tightly with the outer peripheral wall of the side cover portion of the cushion sleeve, and spaced apart from the inner circumferential wall by a predetermined gap from the accommodating groove, and the outer circumference of the outer ring of the ball bearing The wall is slightly in contact with the fit; The inner and outer side walls of the radial portion may be in approximate contact with the inner side wall of the opposite side cover portion and the outer side wall of the outer ring of the ball bearing. The outer five-way bowl assembly according to the fourth aspect of the patent application, wherein the inner cavity operating portion is a polygonal wall surface.