Headset positioning device for a bicycle

Abstract

The utility model discloses a head bowl positioning device contains a bottom bowl, a grommet, an upper cover and a positioning piece. The bottom bowl is arranged in a head pipe and has a positioning hole, the grommet is tightly arranged in a front fork vertical pipe penetrating the head pipe and has a lower through hole, the upper cover is arranged between a driver vertical pipe and the grommet and has a vertical slot and a horizontal slot vertically connected with the vertical slot, the top wall of the vertical slot forms an upper stop part, the top wall of the horizontal slot forms a lower stop part, the positioning piece is arranged in the horizontal slot of the upper cover and the lower through hole of the grommet, when the positioning piece is located at an unlocking position, the positioning piece abuts against the upper stop part of the upper cover and is separated from the positioning hole of the bottom bowl, so that the front fork vertical pipe can be freely deflected, when the positioning piece is located at a locking position, the positioning piece abuts against the lower stop part of the upper cover and is arranged in the positioning hole of the bottom bowl, so that the front fork vertical pipe is positioned.

Description

Technical Field

[0001] This utility model relates to bicycles, and more particularly to a bicycle handlebar cup positioning device. Background Technology

[0002] When a bicycle is parked, its front wheel is in a position where it can turn freely to the left or right. When loading or unloading items in this position, the bicycle is prone to tipping over due to instability caused by the front wheel's rotation. This could damage the bicycle itself and potentially injure nearby pedestrians. Therefore, there is significant room for improvement in the front wheel alignment of bicycles after parking. Utility Model Content

[0003] The main purpose of this invention is to provide a bicycle handlebar cup positioning device that allows riders to quickly and easily position the front wheel after parking, so as to prevent the bicycle from tipping over due to instability caused by the front wheel's deflection.

[0004] To achieve the above-mentioned main objectives, the head cup positioning device provided by this utility model is located between a head tube and a handrail vertical tube and includes a bottom cup, a bearing, a clamping ring, a top cover, a positioning component, and an elastic component. The bottom cup is located inside the head tube and is penetrated by a fork stem. The fork stem passes through the head tube and connects to the rider stem. The bottom cup also has a positioning hole. A bearing is located inside the bottom cup and is penetrated by the fork stem. A clamping ring is fitted onto the fork stem and abuts against the bearing, allowing the clamping ring to rotate relative to the bottom cup via the bearing and driven by the fork stem. The clamping ring also has a lower through hole. A top cover is rotatably located between the rider stem and the clamping ring and is penetrated by the fork stem. The top cover has a longitudinal groove and a transverse groove perpendicularly connected to the longitudinal groove. The top wall of the longitudinal groove forms an upper stop, and the top wall of the transverse groove forms a lower stop. A positioning member is rotatably and vertically displaced through the transverse groove of the top cover and the lower through hole of the clamping ring, allowing... The positioning component can operate between an unlocked position, a half-locked position, and a locked position. When the positioning component is in the unlocked position, the top end of the positioning component is located in the longitudinal groove of the upper cover and abuts against the upper stop of the upper cover, and the bottom end of the positioning component is disengaged from the positioning hole of the bottom cup, allowing the fork stem to deflect freely. When the positioning component is in the half-locked position, the top end of the positioning component is located at the junction of the longitudinal groove and the transverse groove of the upper cover, and the bottom end of the positioning component is inserted into the positioning hole of the bottom cup, temporarily locking the fork stem. When the positioning component is in the locked position, the top end of the positioning component is located in the transverse groove of the upper cover and abuts against the lower stop of the upper cover, and the bottom end of the positioning component is inserted into the positioning hole of the bottom cup, locking the fork stem and preventing it from deflecting.

[0005] As described above, when positioning the front wheel after parking, first rotate the handlebar stem to the preset position, then press the positioning member to move it from the unlocked position to the semi-locked position. Next, rotate the positioning member towards the top cover, moving it from the semi-locked position to the locked position. This completes the positioning of the fork stem, preventing the front wheel from turning left or right arbitrarily. Conversely, to restore the front wheel's left and right turning capability, first rotate the positioning member outward away from the top cover, moving it from the locked position to the semi-locked position. Then, the elastic force provided by the elastic member pushes the positioning member upward from the semi-locked position to the unlocked position, releasing the fork stem's positioning and allowing the front wheel to turn left or right. In other words, the handlebar stem positioning device of this invention utilizes the up-and-down movement and inward-and-outward rotation of the positioning member to quickly unlock and lock the fork stem, meeting the rider's positioning needs for the front wheel after parking.

[0006] Optionally, the positioning member has a pin and a lever connected to the pin. The pin is rotatably and vertically displaced through the transverse groove of the upper cover and the lower through hole of the clamping ring. When the positioning member is in the unlocked position, the lever is located in the longitudinal groove of the upper cover and abuts against the upper stop of the upper cover, and the pin is disengaged from the positioning hole of the bottom bowl. When the positioning member is in the semi-locked position, the lever is located at the junction of the longitudinal groove and the transverse groove of the upper cover, and the pin is inserted into the positioning hole of the bottom bowl. When the positioning member is in the locked position, the lever is located in the transverse groove of the upper cover and abuts against the lower stop of the upper cover, and the pin is inserted into the positioning hole of the bottom bowl.

[0007] Optionally, a spacer ring is provided between the base and the top cover to cover the clamping ring. The spacer ring has an upper through hole through which the pin passes. In this way, the clamping ring is not exposed.

[0008] Optionally, the spacer ring also has a countersunk groove communicating with the upper through hole. The elastic member is sleeved on the pin, with its top end abutting the lever and its bottom end located within the countersunk groove of the spacer ring and abutting the spacer ring. In this way, the elastic member provides an elastic force to push the positioning member upward.

[0009] Optionally, the clamping ring also has a groove that connects to the lower through hole and is pierced by the pin, the groove diameter being larger than the diameter of the lower through hole. The positioning member also has a protrusion that connects to the outer peripheral surface of the pin and is located within the groove of the clamping ring, to prevent the lever from contacting the upper and lower edges of the top cover and affecting the operation of the lever.

[0010] Optionally, when the positioning element is in the unlocked position, the lever protrudes from the top cover for easy operation by the rider; when the positioning element is in the locked position, the lever does not protrude from the top cover, achieving a simplified overall appearance.

[0011] Optionally, the lever has a first marking surface and a second marking surface different from the first marking surface. When the positioning member is in the unlocked position, the first marking surface faces outwards, and when the positioning member is in the locked position, the second marking surface faces outwards. In this way, the rider can easily understand the position of the positioning member through the first marking surface and the second marking surface.

[0012] Detailed construction, features, assembly, and usage of the bicycle headband positioning device provided by this invention will be described in the subsequent detailed description of the embodiments. However, those skilled in the art should understand that these detailed descriptions and the specific embodiments listed for implementing this invention are for illustrative purposes only and are not intended to limit the claims of this invention. Attached Figure Description

[0013] Figure 1 This is a perspective view of the head tube, fork seat tube and rider stem of this utility model, used in conjunction with the head tube, fork seat tube and rider stem tube, showing the positioning component in the unlocked position;

[0014] Figure 2 This is an exploded perspective view of the head cup positioning device of this utility model;

[0015] Figure 3 for Figure 1 A partial axial sectional view showing the locating element in the unlocked position;

[0016] Figure 4 for Figure 3 A sectional view along section line 4-4 shows the protrusion of the positioning element located within the groove of the clamping ring;

[0017] Figure 5 and Figure 1 Similarly, the positioning element is in the semi-locked position;

[0018] Figure 6 and Figure 3 Similarly, the positioning element is in the semi-locked position;

[0019] Figure 7 and Figure 1 Similarly, the indicator shows the positioning element is in the locked position;

[0020] Figure 8 and Figure 3 Similarly, the indicator shows the positioning element is in the locked position;

[0021] Figure 9for Figure 8 A sectional view along section line 9-9 shows the protrusion of the positioning element located within the groove of the clamping ring.

[0022] In the accompanying drawings, the meanings of the reference numerals are as follows:

[0023] Part of this utility model:

[0024] 10-Headpiece positioning device;

[0025] 12-Head tube;

[0026] 14-Front fork riser;

[0027] 16-Rider's vertical tube;

[0028] 20-Bottom Bowl;

[0029] 22-Flange;

[0030] 24-convex ear;

[0031] 26 - Positioning holes;

[0032] 28-Bearing;

[0033] 30-Tightening ring;

[0034] 32-groove;

[0035] 34-Under-perforation;

[0036] S1 - Screw;

[0037] 40 - Top cover;

[0038] 41-Shaft hole;

[0039] 42-Longitudinal groove;

[0040] 43-Transverse groove;

[0041] 44-Gap;

[0042] 45 - Upper stop section;

[0043] 46-Lower stop section;

[0044] 47-Socket;

[0045] 50-spacer ring;

[0046] 52-convex prism;

[0047] 53-Counterhead groove;

[0048] 54 - Upper perforation;

[0049] 60 - Positioning component;

[0050] 62-Pin;

[0051] 64-Tube;

[0052] 641 - First marking surface;

[0053] 642 - Second marking surface;

[0054] 66-Bump;

[0055] S2 - Screw;

[0056] P1 - Unlock position;

[0057] P2 - Semi-locked position;

[0058] P3 - Lock position;

[0059] 70 - Elastic element. Detailed Implementation

[0060] The applicant hereby states that throughout this specification, including the embodiments described below and the claims, all directional terms are based on the directions shown in the accompanying drawings. Secondly, in the embodiments and drawings described below, the same element reference numerals represent the same or similar elements or their structural features.

[0061] Please refer to the following first. Figure 1 As shown, Figure 1 The present invention discloses a head tube positioning device 10 used in conjunction with a head tube 12, a fork stem 14, and a rider stem 16. The top end of the fork stem 14 extends upwards through the head tube 12, and the bottom end of the fork stem 14 connects to the fork tube (not shown). The fork tube connects to a front wheel (not shown). The front end of the rider stem 16 is fixed to a rider tube (not shown) with screws, and the rear end of the rider stem 16 is fixed to the top end of the fork stem 14 with screws. Therefore, the rider stem 16 can be operated by the rider to cause the fork stem 14 to deflect left and right relative to the head tube 12, thereby causing the front wheel to deflect left and right.

[0062] Please continue to refer to Figure 1 and Figure 2 As shown, the head cup positioning device 10 of this utility model is located between the head tube 12 and the handrail vertical tube 16 and includes a bottom cup 20, a bearing 28, a clamping ring 30, an upper cover 40, a spacer ring 50, a positioning member 60, and an elastic member 70.

[0063] like Figure 3 As shown, the base bowl 20 is disposed inside the head tube 12 and abuts against the top of the head tube 12 with a flange 22. For example... Figure 2 As shown, the inner ring surface of the bottom bowl 20 has three lugs 24 arranged at intervals, and each lug 24 has a positioning hole 26.

[0064] like Figure 2 and Figure 3 As shown, the bearing 28 is disposed inside the bottom cup 20 to support the rotational movement of the clamping ring 30.

[0065] like Figure 2 and Figure 3 As shown, the clamping ring 30 is fitted onto the fork stem 14 and abuts against the bearing 28. A screw S1 tightens the clamping ring 30 to the fork stem 14, allowing the clamping ring 30 to rotate relative to the bottom cup 20 via the bearing 28, driven by the fork stem 14. Furthermore, the clamping ring 30 has a groove 32 penetrating the top surface and a lower through hole 34 penetrating the bottom surface. The groove 32 axially connects to the lower through hole 34, and the groove diameter of the groove 32 is larger than the diameter of the lower through hole 34.

[0066] like Figures 1 to 3 As shown, the upper cover 40 is located between the rider stem 16 and the clamping ring 30 and is fitted onto the fork stem 14 through a shaft hole 41. The upper cover 40 has a longitudinal groove 42 and a transverse groove 43 that vertically connects to the longitudinal groove 42. The longitudinal groove 42 and the transverse groove 43 are radially connected to the shaft hole 41 through a notch 44. The top wall of the longitudinal groove 42 forms an upper stop 45, and the top wall of the transverse groove 43 forms a lower stop 46. The upper stop 45 and the lower stop 46 are adjacent to each other and form a stepped arrangement of varying heights. Furthermore, as... Figure 2 As shown, the bottom surface of the top cover 40 has an insertion hole 47.

[0067] like Figure 3 As shown, the spacer ring 50 is positioned between the base bowl 20 and the top cover 40, concealing the clamping ring 30 from being exposed. For example... Figure 2 As shown, the top surface of the spacer ring 50 has a protrusion 52 and a countersunk groove 53. The spacer ring 50 is inserted into the insertion hole 47 of the upper cover 40 via the protrusion 52 to complete the assembly and positioning of the two. Furthermore, as... Figure 2 and Figure 3 As shown, the spacer ring 50 also has an upper through hole 54 that axially penetrates the top and bottom surfaces. The top end of the upper through hole 54 is connected to the countersunk groove 53 and the transverse extension groove 43 of the upper cover 40, and the bottom end of the upper through hole 54 is connected to the groove 32 of the clamping ring 30.

[0068] In this embodiment, the positioning member 60 has a pin 62 and a lever 64. The lever 64 is sleeved on the top of the pin 62 and locked with a screw S2, so that the lever 64 and the pin 62 are fixed together. Figure 2 and Figure 3As shown, the pin 62 is sequentially inserted from top to bottom into the transverse groove 43 of the upper cover 40, the upper through hole 54 of the spacer ring 50, the groove 32 of the clamping ring 30, and the lower through hole 34 of the clamping ring 30, so that the positioning member 60 can move between an unlocked position P1, a half-locked position P2, and a locked position P3. When the positioning member 60 is in the position shown... Figure 1 and Figure 3 When the unlock position P1 is shown, the lever 64 is located in the longitudinal groove 42 of the upper cover 40 and abuts against the upper stop 45 of the upper cover 40, and the bottom end of the pin 62 is disengaged from the positioning holes 26 of the bottom cup 20; when the positioning member 60 is in the position shown... Figure 5 and Figure 6 When in the semi-locked position P2 as shown, the lever 64 is located at the junction of the longitudinal groove 42 and the transverse groove 43 of the upper cover 40, and the bottom end of the pin 62 is inserted into one of the positioning holes 26 of the bottom cup 20; when the positioning member 60 is in the position shown... Figure 7 and Figure 8 In the locked position P3, the lever 64 is located within the transverse groove 43 of the upper cover 40 and abuts against the lower stop 46 of the upper cover 40, and the bottom end of the pin 62 is inserted into one of the positioning holes 26 of the bottom cup 20. Furthermore, the positioning member 60 also has a protrusion 66, which is connected to the outer peripheral surface of the pin 62 and located within the groove 32 of the clamping ring 30, to prevent the lever 64 from contacting the upper and lower edges of the upper cover 40 and affecting the operation of the lever 64 (e.g., ...). Figures 2 to 4 (As shown).

[0069] In this embodiment, the elastic element 70 is exemplified by a compression spring. Figure 2 and Figure 3 As shown, the elastic element 70 is sleeved on the pin 62, with the top end of the elastic element 70 abutting against the handle 64, and the bottom end of the elastic element 70 located in the countersunk groove 53 of the spacer ring 50 and abutting against the spacer ring 50. In this way, the elastic element 70 provides elastic force to push the positioning element 60 upward.

[0070] As described above, if the rider needs to align the front wheel after parking, first rotate the rider stem 16 to the preset position. During this rotation, the fork stem 14, clamping ring 30, spacer ring 50, aligning element 60, and top cover 40 will rotate together. Then, press the shift lever 64 to move the aligning element 60 from its preset position. Figure 1 and Figure 3 The unlock position P1 shown has been moved down to the position shown below. Figure 5 and Figure 6 In the semi-locked position P2 shown, the elastic element 70 is compressed and accumulates elastic restoring force. Then, the lever 64 is rotated approximately 90 degrees toward the upper cover 40, causing the positioning element 60 to move from the semi-locked position P2 to the semi-locked position P2. Figure 5 and Figure 6 The semi-locked position P2 shown is rotated to the position as follows: Figure 7 and Figure 8The locking position P3 is shown. At this point, the bottom end of the pin 62 is inserted into one of the positioning holes 26 of the cup holder 20, thus completing the positioning of the fork stem 14 and preventing the front wheel from turning arbitrarily left or right. Conversely, to restore the front wheel to a state where it can turn left or right, first rotate the lever 64 outwards about 90 degrees away from the upper cover 40, so that the positioning member 60 moves from the position shown in the diagram. Figure 7 and Figure 8 The locking position P3 shown is rotated to the position shown. Figure 5 and Figure 6 As shown in the semi-locked position P2, the elastic force released by the elastic element 70 will then move the positioning element 60 from the position shown in the image. Figure 5 and Figure 6 As shown, push the semi-locked position P2 upwards until... Figure 1 and Figure 3 The unlock position P1 is shown. At this time, the bottom end of the pin 62 will disengage from the positioning holes 26 of the bottom cup 20, thus releasing the positioning of the front fork stem 14 and allowing the front wheel to turn left and right.

[0071] It is worth mentioning that when the positioning component 60 is located as... Figure 1 When the unlocked position P1 is shown, the lever 64 protrudes from the upper cover 40 to facilitate the rider's operation of the positioning element 60. When the positioning element 60 is in the position shown... Figure 7 When the locking position P3 is shown, the lever 64 is hidden within the transverse extension groove 43 of the upper cover 40, achieving a simplified overall appearance without being overly obtrusive. On the other hand, the lever 64 can be equipped with a first marking surface 641 and a second marking surface 642 as needed. The first marking surface 641 and the second marking surface 642 can be distinguished by different colors or patterns; for example, the first marking surface 641 could be red to indicate locking, and the second marking surface 642 green to indicate unlocking. Therefore, when the positioning member 60 is in the position shown... Figure 1 When the unlock position P1 is shown, the first marking surface 641 faces outwards, and when the positioning member 60 is in the position shown... Figure 7 When the locking position P3 is shown, the second marking surface 642 faces outwards, allowing the rider to intuitively understand the current position of the positioning component 60 through the first marking surface 641 and the second marking surface 642.

[0072] In summary, the front wheel positioning device 10 of this utility model allows riders to quickly and conveniently complete operations by utilizing the up-and-down movement and inward-and-outward rotation of the positioning member 60, thus meeting the rider's need for front wheel positioning after parking. Furthermore, after locking, the positioning member 60 does not protrude outwards, resulting in a simplified overall structural appearance.

Claims

1. A headband positioning device for a bicycle, characterized in that, The bicycle includes a head tube, a fork seat tube, and a rider stem tube. The fork seat tube is rotatably inserted into the head tube. The rider stem tube is connected to the top of the fork seat tube and can drive the fork seat tube to rotate relative to the head tube. The headset is located between the head tube and the rider stem tube and includes: A bottom cup is disposed inside the head tube and is penetrated by the fork stem tube, and the bottom cup has a positioning hole; A bearing is located inside the bottom cup and is penetrated by the fork stem; A clamping ring is fitted onto the fork stem tube and abuts against the bearing in a clamping manner, so that the clamping ring can be driven by the fork stem tube to rotate relative to the bottom cup, and the clamping ring has a through hole; A top cover is rotatably disposed between the rider stem and the clamping ring and is penetrated by the fork stem. The top cover has a longitudinal groove and a transverse groove that is vertically connected to the longitudinal groove. The top wall of the longitudinal groove forms an upper stop and the top wall of the transverse groove forms a lower stop. A positioning member is rotatably and vertically displaced through the transverse groove of the upper cover and the lower through hole of the clamping ring, allowing the positioning member to move between an unlocked position, a partially locked position, and a locked position. When the positioning member is in the unlocked position, its top end is located within the longitudinal groove of the upper cover and abuts against the upper stop of the upper cover, while its bottom end is disengaged from the positioning hole of the bottom bowl. When the positioning member is in the partially locked position, its top end is located at the junction of the longitudinal and transverse grooves of the upper cover, while its bottom end is inserted into the positioning hole of the bottom bowl. When the positioning member is in the locked position, its top end is located within the transverse groove of the upper cover and abuts against the lower stop of the upper cover, while its bottom end is inserted into the positioning hole of the bottom bowl. An elastic element acts on the positioning element and provides elastic force to push the positioning element upward.

2. The bicycle headstock positioning device according to claim 1, characterized in that, The positioning component has a pin and a lever connected to the pin. The pin is rotatably and vertically displaced through the transverse groove of the upper cover and the lower through hole of the clamping ring. When the positioning component is in the unlocked position, the lever is located in the longitudinal groove of the upper cover and abuts against the upper stop of the upper cover, and the pin is disengaged from the positioning hole of the bottom bowl. When the positioning component is in the semi-locked position, the lever is located at the junction of the longitudinal groove and the transverse groove of the upper cover, and the pin is inserted into the positioning hole of the bottom bowl. When the positioning component is in the locked position, the lever is located in the transverse groove of the upper cover and abuts against the lower stop of the upper cover, and the pin is inserted into the positioning hole of the bottom bowl.

3. The bicycle headstock positioning device according to claim 2, characterized in that, A spacer ring is provided between the bottom bowl and the top cover to cover the clamping ring. The spacer ring has an upper through hole through which the pin passes.

4. The bicycle headstock positioning device according to claim 3, characterized in that, The spacer ring also has a countersunk groove that connects to the upper through hole; the elastic member is sleeved on the pin, and the top end of the elastic member abuts against the lever, and the bottom end of the elastic member is located in the countersunk groove of the spacer ring and abuts against the spacer ring.

5. The bicycle headstock positioning device according to claim 2, characterized in that, The clamping ring also has a groove that connects to the lower through hole and is penetrated by the pin. The groove diameter is larger than the hole diameter of the lower through hole. The positioning member also has a protrusion that is connected to the outer peripheral surface of the pin and located in the groove of the clamping ring.

6. The bicycle headstock positioning device according to claim 2, characterized in that, When the positioning element is in the unlocked position, the lever protrudes from the top cover; when the positioning element is in the locked position, the lever does not protrude from the top cover.

7. The bicycle headstock positioning device according to claim 2, characterized in that, The lever has a first marking surface and a second marking surface different from the first marking surface. When the positioning member is in the unlocked position, the first marking surface faces outward, and when the positioning member is in the locked position, the second marking surface faces outward.

8. The bicycle headstock positioning device according to claim 1, characterized in that, The upper stop and the lower stop are adjacent to each other and form a stepped arrangement.

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