TWI884725B - Bicycle structure - Google Patents

Abstract

A bicycle structure includes a main wheel frame, a shaft mechanism, and a training wheel assembly. The shaft mechanism passes through and is coupled to the main wheel frame, and includes an outer housing and a positioning mechanism movably disposed in the outer housing. The positioning mechanism includes a driving protrusion and a stopper. The training wheel assembly includes a training wheel and a frame, which includes an assembly hole and an engaging concave disposed on an inner surface of the assembly hole. When the assembly hole of the frame sleeves on the shaft mechanism, the engaging concave engages with the driving protrusion to drive the driving protrusion moving toward a center of the shaft mechanism and drive the stopper to an engaging position to engage with the frame.

Description

Bicycle structure

This disclosure relates to a bicycle structure.

Generally speaking, when children learn to ride a bicycle, they usually start by assembling a bicycle with auxiliary wheels. The auxiliary wheels can help prevent the danger of the bicycle tipping over, allowing parents to let their children learn on their own with peace of mind. However, the traditional way to fix the auxiliary wheels is to use locking elements such as screws to lock the auxiliary wheels to the bicycle. Therefore, the installation and removal of the auxiliary wheels require tools. Because of the need to carry tools, users are still unable to install or remove the auxiliary wheels anytime and anywhere, which greatly reduces its convenience.

The present disclosure provides a bicycle structure whose auxiliary wheels can be easily disassembled and assembled without tools.

A bicycle structure disclosed herein includes a main wheel bracket, a bearing mechanism, and an auxiliary wheel assembly. The bearing mechanism passes through the main wheel bracket to couple with the main wheel bracket, and includes an outer shell and a positioning mechanism movably disposed in the outer shell, wherein the positioning mechanism includes a driving bump and a stopper. The auxiliary wheel assembly includes an auxiliary wheel and a bracket coupled to the auxiliary wheel, wherein the bracket includes an assembly hole and a snap-fit groove disposed on the inner surface of the assembly hole. When the assembly hole of the bracket is penetrated on the bearing mechanism, the snap-fit groove snaps with the driving bump to drive the driving bump to move toward the center of the bearing mechanism, and drives the stopper to move to the snap-fit position to snap with the bracket.

In one embodiment of the present disclosure, the length of the engaging groove in the thickness direction of the bracket is less than the thickness of the bracket.

In one embodiment of the present disclosure, the bearing mechanism further includes a reset element coupled between the outer shell and the positioning mechanism so that the positioning mechanism is suitable for reciprocating along the long axis direction of the bearing mechanism.

In one embodiment of the present disclosure, the outer shell includes a driving slide groove, and the driving protrusion passes through the driving slide groove to slide along the driving slide groove.

In one embodiment of the present disclosure, the outer shell includes a positioning slot, and the stopper can slide movably along the positioning slot.

In one embodiment of the present disclosure, the positioning slot includes a limiting portion and a releasing portion, the slot width of the releasing portion is greater than the slot width of the limiting portion, and when the stopper slides to the releasing portion, the stopper pops out and engages with the bracket.

In one embodiment of the present disclosure, the bearing mechanism further includes a torsion spring coupled between the positioning mechanism and the stopper.

In one embodiment of the present disclosure, when the stopper is engaged with the bracket, the stopper presses against the outer surface of the bracket facing the auxiliary wheel, so that the bracket is sandwiched between the main wheel bracket and the stopper.

In one embodiment of the present disclosure, the bracket further includes a guide rail extending through the bracket along the thickness direction of the bracket.

In one embodiment of the present disclosure, the top end of the stopper is adapted to move along the guide rail.

Based on the above, the bicycle structure disclosed in the present invention utilizes the engagement between the engagement groove of the bracket of the auxiliary wheel assembly and the driving protrusion of the bearing mechanism, so that the user can push the bracket of the auxiliary wheel assembly toward the main wheel bracket to drive the driving protrusion to move toward the center of the bearing mechanism, thereby driving the stopper of the bearing mechanism to pop out to the engagement position and engage with the bracket. Moreover, when the auxiliary wheel assembly is to be disassembled, the user only needs to push the popped-out stopper back to the original position, and the reset element in the bearing mechanism can automatically push the bracket back to a position far away from the main wheel bracket by its elastic reset force, so that the auxiliary wheel assembly can be disassembled from the bearing mechanism. Therefore, the bicycle structure disclosed herein can easily assemble and disassemble the auxiliary wheel assembly without using any tools, greatly improving the convenience of use and assembly of the bicycle structure.

100: Bicycle structure

101: Frame

110: Main wheel bracket

120: Bearing mechanism

122: Shell

1221: Driving chute

1222: Positioning chute

1223: Release Department

1224: Limiting part

124: Positioning mechanism

1241: Drive bump

1242: Stopper

1243: Torsion spring

126: Cover

127: Locking element

130: Auxiliary wheel assembly

132: Auxiliary wheel

134: Bracket

1341: Assembly hole

1342: snap-in slot

1343:Guide rails

140: Rear main wheel, main wheel

142: wheel hub

150: front main wheel, main wheel

A1: Long axis direction

L1: Length

W1, W2: Groove width

FIG1 is a schematic diagram of a bicycle structure according to an embodiment of the present disclosure.

Figure 2 is a partially enlarged schematic diagram of the auxiliary wheel assembly and bearing mechanism of a bicycle structure according to an embodiment of the present disclosure.

FIG3 is a schematic diagram of the components of a bearing mechanism of a bicycle structure according to an embodiment of the present disclosure.

FIG4 is a partial cross-sectional schematic diagram of a bearing mechanism of a bicycle structure according to an embodiment of the present disclosure.

FIG5 is a schematic diagram of the first state of an auxiliary wheel assembly of a bicycle structure according to an embodiment of the present disclosure.

FIG6 is a schematic diagram of the second state of an auxiliary wheel assembly of a bicycle structure according to an embodiment of the present disclosure.

FIG. 7 is a schematic diagram of the third state of the auxiliary wheel assembly of a bicycle structure according to an embodiment of the present disclosure.

FIG. 1 is a schematic diagram of a bicycle structure according to an embodiment of the present disclosure. FIG. 2 is a partially enlarged schematic diagram of an auxiliary wheel assembly and a bearing mechanism of a bicycle structure according to an embodiment of the present disclosure. Referring to FIG. 1 and FIG. 2 simultaneously, the bicycle structure 100 of the present disclosure may include a main wheel bracket 110, a bearing mechanism 120, and an auxiliary wheel assembly 130. In some embodiments, the bicycle structure 100 has a frame 101, which includes a main wheel bracket 110 connected to front and rear main wheels 140 and 150, respectively. Specifically, the main wheel bracket at the front end of the frame 101 is coupled to the front main wheel 150, and the main wheel bracket 110 at the rear end of the frame 101 is coupled to the rear main wheel 140. In this embodiment, the bicycle structure 100 may include two pairs of auxiliary wheel assemblies 130, which are detachably disposed on opposite sides of the bearing mechanism 120 coupled to the rear main wheel 140 to provide balance and support for the opposite sides of the rear main wheel 140. In this embodiment, the auxiliary wheel assembly 130 may include an auxiliary wheel 132 and a bracket 134 coupled to the auxiliary wheel 132. The auxiliary wheel assembly 130 may be detachably mounted on the bearing mechanism 120 through the structural cooperation between the bracket 134 and the bearing mechanism 120.

FIG. 3 is a schematic diagram of the components of a bearing mechanism of a bicycle structure according to an embodiment of the present disclosure. FIG. 4 is a schematic diagram of a partial cross-section of a bearing mechanism of a bicycle structure according to an embodiment of the present disclosure. Please refer to FIG. 2 to FIG. 4 simultaneously. In some embodiments, the bearing mechanism 120 can pass through the hub 142 of the rear main wheel 140 and the assembly hole of the main wheel bracket 110 to couple the rear main wheel 140 and the main wheel bracket 110, and the main wheel bracket 110 is coupled to the hub 142 of the rear main wheel 140 through the bearing mechanism 120. The bearing mechanism 120 may include an outer shell 122 and a positioning mechanism 124 movably disposed in the outer shell 122. The positioning mechanism 124 includes a driving bump 1241 and a stopper 1242. In one embodiment, the positioning mechanism 124 is sleeved in the housing 122 to move along the long axis direction A1 of the bearing mechanism 120. Specifically, the bearing mechanism 120 may include a reset element 123 such as a spring, which is coupled between the housing 122 and the positioning mechanism 124, so that the positioning mechanism 124 can reciprocate along the long axis direction A1 of the bearing mechanism 120. In this embodiment, the outer shell 122 may include a cover 126 in addition to the sleeve-shaped body, which can be locked on the sleeve-shaped body of the outer shell 122 through a locking element 127 such as a screw to enclose the positioning mechanism 124 in the outer shell 122.

In some embodiments, the bracket 134 of the auxiliary wheel assembly 130 includes an assembly hole 1341 and a snap-fit groove 1342 disposed on the inner surface of the assembly hole 1341. In this embodiment, the snap-fit groove 1342 is disposed on the inner side of the bracket 134, that is, the side of the bracket 134 facing the main wheel bracket 110. The length L1 of the snap-fit groove 1342 in the thickness direction of the bracket 134 is less than the thickness of the bracket 134, that is, the snap-fit groove 1342 does not completely extend through the entire bracket 134. The outer shell 122 may further include a driving slide 1221, and the driving protrusion 1241 passes through the driving slide 1221 and protrudes outside the outer shell 122, and is suitable for sliding along the driving slide 1221. With such configuration, when the assembly hole 1341 of the bracket 134 is penetrated on the bearing mechanism 120, the engagement groove 1342 of the bracket 134 engages with the driving protrusion 1241 of the positioning mechanism 124, thereby driving the driving protrusion 1241 (together with the positioning mechanism 124) and the bracket 134 to move toward the center of the bearing mechanism 120, that is, toward the main wheel bracket 110.

In some embodiments, the housing 122 may further include a positioning slot 1222, and the stopper 1242 may slide movably along the positioning slot 1222. Thus, when the assembly hole 1341 of the bracket 134 is penetrated on the bearing mechanism 120, the engaging slot 1342 of the bracket 134 drives the driving protrusion 1241 of the positioning mechanism 124 to move along the driving slot 1221 toward the main wheel bracket 110, and then drives the stopper 1242 to move to the engaging position shown in FIG. 7 to engage with the bracket 134. Specifically, in one embodiment, the positioning slot 1222 includes a limiting portion 1224 and a releasing portion 1223, and the releasing portion 1223 is located at one end of the positioning slot 1222 close to the main wheel bracket 110. In one embodiment, as shown in FIG. 3 , the groove width W1 of the release portion 1223 is greater than the groove width W2 of the limiting portion 1224 (i.e., W1>W2). Furthermore, the bearing mechanism 120 may further include a torsion spring 1243, which is disposed in the positioning mechanism 124 and coupled between the positioning mechanism 124 and the stopper 1242, so that the stopper 1242 can rotate relative to the positioning mechanism 124.

FIG. 5 is a schematic diagram of a first state of an auxiliary wheel assembly of a bicycle structure according to an embodiment of the present disclosure. FIG. 6 is a schematic diagram of a second state of an auxiliary wheel assembly of a bicycle structure according to an embodiment of the present disclosure. FIG. 7 is a schematic diagram of a third state of an auxiliary wheel assembly of a bicycle structure according to an embodiment of the present disclosure. Under such a structural configuration, when the auxiliary wheel assembly 130 is to be assembled on the bearing mechanism 120, as shown in FIG. 5, the user can first sleeve the assembly hole 1341 of the bracket 134 of the auxiliary wheel assembly 130 on the bearing mechanism 120, and push it toward the main wheel bracket 110 along the long axis direction of the bearing mechanism 120. In this embodiment, the bracket 134 may further include a guide rail 1343, which extends through the entire bracket 134 along the thickness direction of the bracket 134 (corresponding to the guide rail 1343 in FIG. 2 ). In this way, the guide rail 1343 can be used to accommodate the stopper 1242 that slightly protrudes from the outer shell 122, so that the top end of the stopper 1242 can move along the guide rail 1343.

Please continue to refer to Figure 6. The bracket 134 continues to be pushed toward the main wheel bracket 110 to the position shown in Figure 6. At this time, the engaging groove 1342 of the bracket 134 engages with the driving protrusion 1241 protruding from the outer shell 122, so that the bracket 134 can drive the driving protrusion 1241 (together with the stopper 1242) to move toward the main wheel bracket 110. It should be noted that the bracket 134 in Figures 6 and 7 is shown in a partial cross-section to more clearly show the engaging relationship between the engaging groove 1342 and the driving protrusion 1241.

Please refer to FIG. 6 and FIG. 7 simultaneously. The bracket 134 continues to be pushed toward the main wheel bracket 110 to the engaging position shown in FIG. 7. At this time, the stopper 1242 is driven to slide to the release portion 1223 of the positioning slot 1222, and the stopper 1242 is able to pop out and engage with the bracket 134. In detail, the width of the limiting portion of the positioning slot 1222 is relatively small, so as shown in FIG. 6, except for the top portion of the stopper 1242 slightly protruding from the outer shell 122, the rest of the stopper 1242 is limited in the outer shell 122. At this time, the torsion spring 1243 is compressed to generate an elastic return force. When the stopper 1242 is driven to slide to the release portion 1223 of the positioning slot 1222, the torsion spring 1243 is able to release its elastic return force due to the larger slot width of the release portion 1223, so that the stopper 1242 is ejected from the release portion 1223 to engage with the bracket 134. Furthermore, the stopper 1242 is turned outwardly along the rotation direction to the position shown in FIG. 7 due to the elastic return force of the torsion spring 1243, so as to press against the outer surface of the bracket 134 facing the auxiliary wheel (or away from the main wheel bracket 110), so that the bracket 134 is sandwiched between the main wheel bracket 110 and the stopper 1242. In this way, the present disclosure utilizes the engagement between the engagement groove 1342 of the bracket 134 and the driving protrusion 1241 to prevent (limit) the bracket 134 from rotating relative to the bearing mechanism 120, and the pop-up stopper 1242 can limit the displacement in the long axis direction of the bearing mechanism, thereby effectively fixing the auxiliary wheel assembly (such as the auxiliary wheel assembly 130 shown in FIG. 1 ) on the bearing mechanism (such as the bearing mechanism 120 shown in FIG. 1 ). Furthermore, when the auxiliary wheel assembly 130 is to be disassembled, the user only needs to push the pop-up stopper 1242 back into the outer shell 122, and the reset element (such as the reset element 123 shown in FIG. 4 ) can automatically push the bracket 134 back to the initial position far away from the main wheel bracket 110 as shown in FIG. 5 by its elastic reset force, so that the auxiliary wheel assembly 130 can be disassembled from the bearing mechanism 120.

In summary, the bicycle structure disclosed herein utilizes the engagement between the engagement groove of the bracket of the auxiliary wheel assembly and the driving protrusion of the bearing mechanism, so that the user can push the bracket of the auxiliary wheel assembly toward the main wheel bracket to drive the driving protrusion to move toward the center of the bearing mechanism, thereby driving the stopper of the bearing mechanism to pop out to the engagement position and engage with the bracket. Moreover, when the auxiliary wheel assembly is to be disassembled, the user only needs to push the popped-out stopper back to the original position, and the reset element in the bearing mechanism can automatically push the bracket back to a position far away from the main wheel bracket by its elastic reset force, so that the auxiliary wheel assembly can be disassembled from the bearing mechanism. Therefore, the bicycle structure disclosed herein can easily assemble and disassemble the auxiliary wheel assembly without using any tools, greatly improving the convenience of use and assembly of the bicycle structure.

110: Main wheel bracket

120: Bearing mechanism

122: Shell

1221: Driving chute

1222: Positioning chute

1223: Release Department

1224: Limiting part

1241: Drive bump

1242: Stopper

134: Bracket

1341: Assembly hole

1342: snap-in slot

1343:Guide rails

140: Rear main wheel, main wheel

142: wheel hub

L1: Length

Claims (10)

A bicycle structure includes: a main wheel bracket; a bearing mechanism, which passes through the main wheel bracket to couple with the main wheel bracket, and includes an outer shell and a positioning mechanism movably disposed in the outer shell, the positioning mechanism includes a driving bump and a stopper; and an auxiliary wheel assembly, which includes an auxiliary wheel and a bracket coupled to the auxiliary wheel, the bracket includes an assembly hole and a snap-fit groove disposed on the inner surface of the assembly hole, when the assembly hole of the bracket is penetrated on the bearing mechanism, the snap-fit groove snaps with the driving bump to drive the driving bump to move toward the center of the bearing mechanism, and drives the stopper to move to a snap-fit position to snap with the bracket. A bicycle structure as described in claim 1, wherein the length of the engaging groove in the thickness direction of the bracket is smaller than the thickness of the bracket. A bicycle structure as described in claim 1, wherein the bearing mechanism further includes a reset element coupled between the outer shell and the positioning mechanism so that the positioning mechanism is suitable for reciprocating along the long axis direction of the bearing mechanism. A bicycle structure as described in claim 1, wherein the outer shell includes a driving slide groove, and the driving protrusion passes through the driving slide groove to slide along the driving slide groove. A bicycle structure as described in claim 1, wherein the outer shell includes a positioning slide groove, and the stop member can slide movably along the positioning slide groove. A bicycle structure as described in claim 5, wherein the positioning slide groove includes a limiting portion and a releasing portion, the groove width of the releasing portion is greater than the groove width of the limiting portion, and when the stopper slides to the releasing portion, the stopper pops out and engages with the bracket. A bicycle structure as described in claim 1, wherein the bearing mechanism further includes a torsion spring coupled between the positioning mechanism and the stop member. A bicycle structure as described in claim 1, wherein when the stopper is engaged with the bracket, the stopper presses the outer surface of the bracket facing the auxiliary wheel so that the bracket is sandwiched between the main wheel bracket and the stopper. A bicycle structure as described in claim 1, wherein the bracket further includes a guide rail extending through the bracket along the thickness direction of the bracket. A bicycle structure as described in claim 9, wherein the top end of the stop member is suitable for moving along the guide rail.

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