TW202000531A - Bicycle shifting control device and bicycle front set having the same - Google Patents

Abstract

The disclosure relates a bicycle shifting control device which is adapted to be detachably mounted on an outer surface of a bicycle handlebar. The bicycle shifting control device includes a seat, a wireless communication circuit board, a switch, an antenna and a battery cell. The seat has a mounting surface, and the mounting surface is adapted to be mounted on the outer surface of the bicycle handlebar. The mounting surface has a mounting notch and a first side and a second side which are opposite to each other. A distance between a center point of the mounting notch and the first side of the mounting surface is larger than a distance between the center point and the second side, and the shape of the mounting notch matches the outer surface of the bicycle handlebar. The wireless communication circuit board is mounted on the seat. The switch is disposed on the wireless communication circuit board. The antenna is electrically connected to the switch through the wireless communication circuit board, and the antenna is located between the first side and the center point. The battery cell is electrically connected to the wireless communication circuit board. When the switch is activated, the antenna transmits a shifting signal.

Description

Variable-speed drive device and bicycle head including the same

The invention relates to a driving device for bicycles, in particular to a variable-speed driving device for wirelessly driving bicycles and a bicycle head including the same.

In recent years, the bicycle market has been booming. Whether it is a competition type bicycle or a mass-type bicycle used as a transportation tool and leisure entertainment, it has been widely loved by consumers, prompting manufacturers to focus more on meeting the various needs of users for bicycles. As a result, the car body materials and functions are constantly improved. For example, in order to improve the applicability of bicycles, bicycles are generally equipped with a shifting system, so that users can switch the chain to different gears according to their own needs or with different terrains, which can reduce or increase the amount of pedaling required. power.

Generally speaking, the transmission system is divided into a mechanical transmission system and an electronic transmission system. In the mechanical transmission system, the front gearbox and the rear gearbox are shifted by shifting gears and transmission lines. The electronic shifting system uses the shifting button and shifting control circuit to switch the front and rear transmissions. Because the sensitivity and accuracy of the electronic transmission system is better than that of the mechanical transmission system, and the control feel of the electronic transmission system is also more light and direct, the electronic transmission system has become the current development trend of the bicycle market.

With the emergence of various riding needs, for example, when a rider performs a high-speed dive on a bicycle, in order to improve the experience and effect of dive, the way of holding the handlebar of the bicycle is usually changed to change the riding posture, but the front and rear shifting devices are usually It is assembled on the left and right sides of the bicycle handlebar, so if the rider needs to change the gear during the dive, he needs to switch the holding position, that is, he needs to change the riding position again to smoothly change the gear, which not only causes the inconvenience of the gear shift , Changing the riding posture under high-speed movement is also likely to cause accidents. Therefore, how to provide a convenient and safe shifting method according to various riding needs of users is one of the problems that relevant industry personnel want to solve

In this regard, although some manufacturers have proposed that the extended shift switch can be additionally assembled on the vehicle body, the traditional extended shift switch needs to be connected to the controller with a cable, that is, each additional shift switch needs to be equipped with a corresponding Not only is the cable inconvenient to install, but the cable configuration also affects the overall appearance. Moreover, if a plurality of expanded wireless variable speed switches are installed, the manufacturing cost will be greatly increased.

In view of this, the present invention provides a variable speed drive device and a bicycle head including the same, to solve the problems of inconvenience in cable installation and impact on the overall appearance of the aforementioned extended variable speed switch.

According to an embodiment of the present invention, a variable speed drive device is adapted to be detachably mounted on an outer surface of a bicycle handlebar, and includes a carrier, a wireless communication circuit board, a switch, an antenna and a battery . The bearing seat has an assembling surface suitable for assembling on the outer surface of the bicycle handlebar, wherein the assembling mask has an assembling groove and a first side and a second side opposite to each other. The distance from a center point to the first side of the assembly surface is greater than the distance from the center point to the second side, and the shape of the assembly groove matches the outer surface of the bicycle handlebar. The wireless communication circuit board is installed on the bearing base. The switch is arranged on the wireless communication circuit board. The antenna is electrically connected to the switch via the wireless communication circuit board, and the antenna is interposed between the first side and the center point of the assembly slot. The battery is electrically connected to the wireless communication circuit board, wherein when the switch is triggered, the antenna transmits a shift signal.

A bicycle head disclosed according to an embodiment of the present invention includes a bicycle handlebar, a first brake assembly, a second brake assembly, and a first variable speed drive device. The bicycle handlebar includes a central portion and two grip portions connected to opposite sides of the central portion. The first brake assembly and the second brake assembly are respectively installed on the two grip parts. The first variable speed drive device is detachably installed on the outer surface of either the central portion or the two grip portions, and is separated from the first brake assembly and the second brake assembly. The first variable speed drive device includes a wireless communication circuit board, a switch, an antenna and a battery. The switch is arranged on the wireless communication circuit board. The antenna is electrically connected to the switch via the wireless communication circuit board. The battery is electrically connected to the wireless communication circuit board, wherein when the switch is triggered, the antenna transmits a shift signal.

The variable speed drive device disclosed above and the bicycle head including the same, because the variable speed drive device includes a wireless communication circuit board, a switch, an antenna and a battery, and the variable speed drive device can be selectively disposed at a suitable position on the bicycle handlebar of the bicycle . Therefore, the variable speed drive can be used as an independent wireless signal transmission center, which can not only provide another way for the rider to perform the gear up or down operation, but also increase the diversity and flexibility of the operation.

In addition, because it is a wireless configuration, the use of cables can be reduced, thereby improving the convenience of installation and avoiding the problems of cable routing affecting the design.

In addition, the distance from the center point of the assembling groove to different sides of the assembling surface is different, so the assembling groove is offset on the assembling surface, so that the variable speed drive device is in an offset configuration with respect to the bicycle handlebar. In this way, the antenna can protrude relatively to one side of the bicycle handlebar, so that it is not blocked by the bicycle handlebar in a specific signal transmission direction, which helps to avoid the situation that the signal is blocked and weakened.

The above description of the disclosure and the following description of the embodiments are used to demonstrate and explain the spirit and principle of the present invention, and provide a further explanation of the scope of the patent application of the present invention.

The following describes in detail the detailed features and advantages of the present invention in the embodiments. The content is sufficient for any person skilled in the relevant art to understand and implement the technical contents of the present invention, and according to the contents disclosed in this specification, the scope of patent application and the drawings In this way, any person skilled in the relevant art can easily understand the objects and advantages related to the present invention. The following examples further illustrate the views of the present invention in detail, but do not limit the scope of the present invention in any way.

In addition, unless otherwise defined, all words used in this article, including technical and scientific terms, etc. have their usual meanings, and their meanings can be understood by those familiar with the technical field. Furthermore, the definition of the above words should be interpreted as having the same meaning as the technical field related to the present invention in this specification. Unless specifically defined, these terms will not be interpreted as too idealistic or formal meanings.

First, please refer to FIG. 1, which is a schematic perspective view of a bicycle head and a variable speed drive device according to an embodiment of the invention. This embodiment provides a bicycle head 9 and a variable speed drive device 1 provided thereon.

The bicycle head 9 is a mechanism suitable for assembling on a bicycle faucet and used for a cyclist (hereinafter referred to as "rider") to grasp and operate the bicycle when riding the bicycle. As shown in the figure, the bicycle head 9 includes a bicycle handlebar 91, a first brake assembly 92 and a second brake assembly 93. The bicycle handlebar 91 is a tube or rod that is bent into a specific shape, and may be, but not limited to, made of metal or carbon fiber and other materials, but the invention is not limited to its material. In this embodiment, the bicycle handlebar 91 includes a central portion 910 and grip portions 920 connected to both sides of the central portion 910. The central portion 910 is a portion of the bicycle handle 91 with a straight rod body, and the second grip portion 920 extends from the central portion 910 and is bent into a shape suitable for the rider to hold in a riding position. However, it is reminded that in this embodiment, the grip portion 920 of the bicycle handlebar 91 is a bent handle as an example, but the present invention is not limited to this. For example, in other embodiments, the grip portion may form a linear horizontal handle together with the central portion.

The first brake assembly 92 and the second brake assembly 93 are respectively assembled on the two grip portions 920, and are respectively equipped with brake levers (not labeled) for the rider to pull to brake the front and rear wheels of the bicycle respectively . In addition, in this embodiment, the bicycle head 9 is equipped with an electronic transmission system, so an electronic transmission drive (not shown) is also assembled on the first brake assembly 92 and/or the second brake assembly 93, The keys (not labeled) of the electronic variable speed drive device are, for example, located inside the brake lever of the brake assembly, which can be pressed by the rider to send shift signals (such as gear shift and/or gear shift signals), and through the antenna in the drive device (Not shown) The shift signal is transmitted to the front derailleur and/or the rear derailleur.

The variable speed drive device 1 is disposed on the outer surface 911 of the bicycle handlebar 91 and is separated from the first brake assembly 92 and the second brake assembly 93, but its position on the bicycle handlebar 91 is not limited. This embodiment is only an example in which the variable speed drive device 1 is disposed at the central portion 910 of the bicycle handlebar 91. In fact, the variable speed drive device 1 can be changed to be disposed on the grip portion 920 on one side according to different requirements. In addition, the method of fixing the variable speed drive device 1 to the bicycle handlebar 91 may be, but not limited to, being glued with adhesive or being strapped or tied with a loop, etc. In order to facilitate the explanation of some drawings, the drawings in this case Partly omitted.

It is worth noting that, in this embodiment, in addition to the variable speed driving device on the first brake assembly 92 and/or the second brake assembly 93, the rider can also perform gear shifting or shifting operations through the variable speed driving device 1 . Hereinafter, the variable speed drive device 1 will be described.

Please continue to refer to FIGS. 2~4. FIG. 2 is a partially enlarged exploded schematic diagram of the variable speed drive device of FIG. 1, FIG. 3 is a partially enlarged detailed schematic diagram of the variable speed drive device of FIG. 1, and FIG. 4 is a view of FIG. intention.

In this embodiment, the variable speed drive device 1 includes a carrier 110, a cover 120, a wireless communication circuit board 130, a switch 140, an antenna 150, a battery 160, a connector 170, a battery cover 180 and One dust plug 190.

The supporting base 110 includes a bottom plate portion 111 and a side wall portion 112. The bottom plate portion 111 is suitable for being assembled on the outer surface 911 of the bicycle handlebar 91. The side wall portion 112 surrounds the bottom plate portion 111 and stands upright. The side wall portion 112 has a through hole 110s on one side and a notch 1101 on the other side. Wherein, the carrier 110 is made of a material that is highly penetrable to radio waves (such as plastic material) to reduce the degree of blocking or interfering with wireless signals, but the present invention is not limited to this.

The wireless communication circuit board 130 is mounted on the bottom plate portion 111 of the carrier 110, and the antenna 150 is electrically connected to one side of the wireless communication circuit board 130 to be integrated with the wireless communication circuit board 130 to enable wireless communication The circuit board 130 is mounted on the bottom plate 111 together. Wherein, the wireless communication circuit board 130 is provided with wiring (not shown) suitable for performing and controlling wireless communication, but the invention is not limited thereto. In addition, the position of the antenna 150 in the variable speed drive device 1 is actually not limited, but can be adjusted according to actual needs.

The switch 140, the connector 170 and the battery cover 180 are assembled on the wireless communication circuit board 130, and the switch 140 is interposed between the connector 170 and the battery cover 180. Further, the switch 140 and the connector 170 are electrically connected to the wireless communication circuit board 130 to electrically connect the antenna 150 through the wireless communication circuit board 130. Among them, the switch 140 is a touch-pressure switch, after triggering, it can send a predetermined signal to the wireless communication circuit board 130, and the signal can be transmitted through the antenna 150; the connector 170 has a jack 170s, corresponding to the side The through hole 110s on the wall portion 112; a space is formed between the battery cover 180 and the wireless communication circuit board 130 to accommodate the battery 160. As can be understood from FIGS. 2 to 3, when the wireless communication circuit board 130 together with the switch 140 and the connector 170 are installed in the carrier 110, the battery 160 can be removed from the gap of the side wall 112 of the carrier 110 1101 is installed into the space between the battery cover 180 and the wireless communication circuit board 130, whereby the battery 160 can be used as a power source for providing the operation of the variable speed drive device 1.

The cover 120 is detachably assembled on the carrier 110 to surround the wireless communication circuit board 130, switch 140, antenna 150, battery 160, connector 170 and battery cover 180 on the carrier 110 together with the carrier 110. In addition, the cover 120 has a through hole 120s. When the cover 120 is assembled on the carrier 110, the through hole 120s corresponds to the through hole 110s on the side wall portion 112 of the carrier 110, that is, the through hole 120s of the cover 120 The through hole 110s of the bearing base 110 is aligned with and communicates with the socket 170s of the connector 170. In this case, the dust plug 190 may penetrate the perforated hole 120s, the perforated hole 110s, and the insertion hole 170s in order to prevent dust from entering the variable speed drive 1 from these holes.

In addition, the cover 120 further has a pressing portion 121 corresponding to the switch 140, and a protrusion 1211 protruding from the inner side of the pressing portion 121 extends toward the switch 140. In this embodiment, the pressing portion 121 or the entire cover 120 is, for example but not limited to, made of a soft material with elastic restoring force (such as rubber). Therefore, the user can touch the pressing portion 121 from the outside of the cover 120 to drive the stud 1211 to trigger the switch 140 through the deformation of the pressing portion 121. When the switch 140 is triggered, the corresponding signal (such as the gear shift signal or (Reverse gear signal) can be transmitted through the wireless communication circuit board 130 through the antenna 150 to the electronic device that has previously been paired with the variable speed drive device 1 (such as the electronic variable speed drive device on the first brake assembly 92 or the second brake assembly 93) .

It can be seen from the above that the variable speed drive device 1 can be used as an independent wireless signal transmission center by the aforementioned configuration of the variable speed drive device 1. In actual operation, as shown in FIG. 1 again, the variable-speed drive device 1 can be paired with the variable-speed drive device on any one of the first brake assembly 92 and the second brake assembly 93, and installed according to the needs of riding In an ideal position (not limited to the central portion 910 of the bicycle handle 91 or one of the grip portions 920). After the pairing is completed, the rider can instruct the paired variable speed drive device to advance or reverse the gear by operating the variable speed drive device 1. Specifically, after the variable-speed drive device 1 is paired with one of the aforementioned variable-speed drive devices, the rider can trigger the switch 140 of the variable-speed drive device 1 and use the antenna 150 to switch the signal of the switch 140 (such as the gear-shift signal or the gear-shift signal) ) Is transmitted to the paired variable speed drive device, thereby instructing the variable speed drive device to perform an operation of shifting gears or shifting gears.

For this, please refer further to FIG. 5, which is a partially enlarged schematic side sectional view of FIG. 1 along 5-5'. As shown in the figure, the bottom plate portion 111 of the carrier 110 has an assembly surface 1111 facing the bicycle handlebar 91. The carrier 110 is used for assembling on the outer surface 911 of the bicycle handlebar 91. The assembly surface 1111 has a first side 1111a and a second side 1111b opposite to each other, and an assembly groove 1111s between the first side 1111a and the second side 1111b. The shape of the assembling groove 1111s matches the outer surface 911 of the bicycle handlebar 91, and is a structure on the assembling surface 1111 for matching and fixing with the outer surface 911 of the bicycle handlebar 91. It is worth noting that the assembly groove 1111s is offset on the assembly surface 1111. As shown in the figure, the distance (such as d1) from the center point C of the assembly groove 1111s to the first side 1111a of the assembly surface 1111 and the second side 1111b The distance (such as d2) is different, for example, d1 is greater than d2. The center point C mentioned here refers to a virtual reference point through which the symmetric center line of the assembly groove 1111s passes. Furthermore, the antenna 150 is located between the first side 1111a and the center point C of the assembly groove 1111s, and is located closer to the first side 1111a; that is, the antenna 150 is closer to one end of the first side 1111a to the first side 1111a Is less than the distance from the end to the center point C of the assembly groove 1111s. With this design, after the variable speed drive device 1 is installed on the bicycle handlebar 91, the variable speed drive device 1 is biased relative to the bicycle handlebar 91, so that the antenna 150 can relatively protrude from one side of the bicycle handlebar 91. As seen from the perspective of direction D in FIG. 5, the bicycle handle 91 does not cover the antenna 150, so that the signal transmitted from the antenna 150 along the direction D will not be blocked by the bicycle handle 91 at least, which helps to avoid The signal was blocked and weakened. It can be understood from FIGS. 1 and 5 that, due to the offset configuration of the variable speed drive device 1, the antenna 150 can protrude relative to the bicycle handlebar 91, such that the antenna 150 and the antenna of the variable speed drive device on the first brake assembly 92, for example It is not blocked by the bicycle handlebar 91, so as to reduce the signal transmission of the variable speed drive device 1 from being affected by the bicycle handlebar 91.

It can be seen that the variable speed drive device 1 provides another way for the rider to go up or down, and because the variable speed drive device 1 is a wireless signal transmission center, it does not need to be connected to a signal line or cable, so the location of the setting It has high flexibility and can be adjusted according to different riding postures, which can improve the overall applicability and experience. For example, when the rider dives at high speed, the position of the bicycle handlebar is usually changed to change the riding posture, for example, the hand is changed to hold the central portion 910 of the bicycle handlebar 91. At this time, the variable speed drive device 1 It can be installed at a suitable position on the central part 910 in advance, so that the rider can easily perform the gear shifting or shifting operation after changing the riding posture, which not only improves the convenience of operation, but also prevents the rider from changing gears. Change the riding posture again and cause unexpected problems.

In addition, please refer to FIG. 6, which is a schematic diagram of the bicycle head of FIG. 1 externally connected with another driving device. The rider can also insert a cable (not labeled) into the connector 170 of the aforementioned variable speed drive device 1 to externally connect another variable speed drive device 1a that is the same as or different from the variable speed drive device 1 through the cable to increase operation Diversity. For example, when the variable speed drive device 1a is connected to the variable speed drive device 1, and the variable speed drive devices 1 and 1a each have a switch, the control methods that can be achieved include: the variable speed drive device 1 is responsible for the operation of the front gear shift The variable speed drive device 1a is responsible for the operation of shifting down the front transmission; or, the variable speed drive device 1 is responsible for the operation of shifting up the rear transmission, and the variable speed drive device 1a is responsible for the operation of shifting down the rear transmission. That is to say, with this configuration, the operations of upshifting and downshifting of the front derailleur or the rear derailleur can be performed wirelessly, respectively. Wherein, the variable speed drive device 1a may also be a simple device with keys, and the wireless communication function is realized by the variable speed drive device 1a. It can be seen that the variable speed drive device 1 of this embodiment can be used with the connector 170 when it can be a wireless signal transmission center itself, that is, the keys can be expanded in a low-cost manner, which helps to effectively control the overall cost It can also avoid the inconvenience of installation and damage to visual appearance caused by excessive use of cable routing.

In addition, in other embodiments, the variable speed drive device 1 can also be changed to have two switches 140 at the same time, and the variable speed drive device 1a can be correspondingly expanded to have two switches at the same time, in this case, the variable speed drive The device 1 can be solely responsible for the forward and reverse gear operations of one of the front and rear transmissions, while the variable speed drive device 1a can be solely responsible for the forward and reverse gear operations of the other of the front and rear transmissions.

However, it should also be stated that, in another embodiment, the variable speed drive device can also omit the connector 170 according to different requirements without the expansion function shown in FIG. 6.

In addition, although the foregoing embodiment provides the variable speed drive device 1, the present invention is not limited to this. For example, please refer to FIGS. 7-8. FIG. 7 is a partially enlarged detailed partial schematic diagram of a variable speed drive device 1'according to another embodiment of the present invention, and FIG. 8 is an assembly of the variable speed drive device 1'of FIG. Partially enlarged schematic side sectional view.

Generally speaking, the function and installation method of the variable speed drive device 1'of this embodiment is substantially the same as the variable speed drive device 1 of the previous embodiment, the difference is only in the configuration of the internal components such as the battery, wireless communication circuit board, switch, antenna and the carrier Of the configuration. As shown in the figure, in this embodiment, the variable speed drive device 1'includes a carrier 110', a cover 120', a wireless communication circuit board 130', a switch 140, an antenna 150', a battery 160, A connector 170, a battery cover 180 and a dust plug 190.

The carrier 110' includes a bottom plate portion 111' and a side wall portion 112'. The bottom plate portion 111' is also suitable for being assembled on the outer surface 911 of the bicycle handlebar 91. The side wall portion 112' surrounds Around, and the side wall portion 112' has a perforation 110s on one side. Wherein, the carrier 110' is also made of, for example, a material that is highly penetrable to radio waves (such as plastic material) to reduce the degree of blocking or interfering with wireless signals, but the invention is not limited thereto.

The switch 140 and the connector 170 are both electrically connected and assembled on the side of the wireless communication circuit board 130' facing away from the bottom plate portion 111', and the battery cover 180 is disposed on the side of the wireless communication circuit board 130' facing the bottom plate portion 111' . The battery 160 is installed in the space between the battery cover 180 and the wireless communication circuit board 130'. That is, the wireless communication circuit board 130' is interposed between the switch 140 and the connector 170 and the battery cover 180 and the battery 160. The antenna 150' is electrically connected to one side of the wireless communication circuit board 130' and is integrated with the wireless communication circuit board 130' to electrically connect the switch 140 and the connector 170 through the wireless communication circuit board 130'. The aforementioned wireless communication circuit board 130', switch 140, antenna 150', battery 160, connector 170, and battery cover 180 can be accommodated in the carrier 110' together.

The cover 120' is detachably assembled on the carrier 110' to surround the wireless communication circuit board 130', the switch 140, the antenna 150', the battery 160, the connector 170 and the battery cover 180 together with the carrier 110'. In addition, the cover body 120' also has a perforation 120s. When the cover body 120' is assembled on the supporting base 110', the through hole 120s corresponds to the through hole 110s on the side wall portion 112' of the supporting base 110' to prevent the dust plug 190 can be worn in sequence. The cover 120' further has a pressing portion 121' corresponding to the switch 140, and a protrusion 1211' protruding from the inner side of the pressing portion 121' extends toward the switch 140 for triggering the switch 140.

The variable speed drive device 1'is also in an offset configuration. As shown in FIG. 8, the bottom plate portion 111' of the carrier 110' has an assembly surface 1111' for assembly on the outer surface 911 of the bicycle handlebar 91. The assembly surface 1111' has a first side 1111a' and a second side 1111b' opposite to each other, and an assembly groove 1111s' between the first side 1111a' and the second side 1111b'. The shape of the assembly groove 1111s' matches the outer surface 911 of the bicycle handlebar 91. Similarly, the assembly groove 1111s' is offset on the assembly surface 1111'. As shown, the distance from the center point C'of the assembly groove 1111s' to the first side 1111a' of the assembly surface 1111' (such as d1') The distance from the second side 1111b' (such as d2') is different, for example, d1' is greater than d2'. The center point C'mentioned here refers to a virtual reference point through which the symmetric center line of the assembly groove 1111s' passes. Moreover, the antenna 150' is located between the first side 1111a' and the center point C'of the assembly groove 1111s', and is located closer to the first side 1111a'; that is, the antenna 150' is closer to the first side 1111a' The distance from one end to the first side 1111a' is smaller than the distance from the end to the center point C'of the assembly groove 1111s'. With this design, the variable speed drive device 1'is offset after being installed on the bicycle handlebar 91, so that the antenna 150' can protrude relatively to one side of the bicycle handlebar 91. The effect is the same as the variable-speed driving device in the embodiment of FIG. 5 described above, which can prevent the signal transmitted by the antenna 150 along the direction D from being blocked.

In addition, although in the foregoing embodiments, the battery is accommodated in the carrier, the invention is not limited thereto. For example, in other embodiments, the battery may be changed to an external type and located outside the carrier.

Furthermore, although the aforementioned bicycle head is provided with variable speed drive devices for controlling the front derailleur and the rear derailleur on the two grip portions, the present invention is not limited to this. For example, in other embodiments, only one of the two grips may be provided with a variable speed drive device for the front or rear derailleur.

In summary, the variable speed drive device and the bicycle head including the same, because the variable speed drive device includes a wireless communication circuit board, a switch, an antenna, and a battery, and the variable speed drive device can be selectively disposed at a suitable position on the bicycle handlebar . Therefore, the variable speed drive can be used as an independent wireless signal transmission center, which can not only provide another way for the rider to perform the gear up or down operation, but also increase the diversity and flexibility of the operation.

In addition, because it is a wireless configuration, the use of cables can be reduced, thereby improving the convenience of installation and avoiding the problems of cable routing affecting the design.

In addition, the distance from the center point of the assembling groove to different sides of the assembling surface is different, so the assembling groove is offset on the assembling surface, so that the variable speed drive device is in an offset configuration with respect to the bicycle handlebar. In this way, the antenna can protrude relatively to one side of the bicycle handlebar, so that it is not blocked by the bicycle handlebar in a specific signal transmission direction, which helps to avoid the situation that the signal is blocked and weakened.

In addition, since the variable speed drive device is provided with a connector, the variable speed drive device can be externally connected with another drive device to increase the diversity of operations.

Although the present invention is disclosed as the foregoing embodiments, it is not intended to limit the present invention. Without departing from the spirit and scope of the present invention, all modifications and retouching are within the scope of patent protection of the present invention. For the protection scope defined by the present invention, please refer to the attached patent application scope.

1, 1’, 1a‧‧‧ Variable speed drive device 9‧‧‧ bicycle head 91‧‧‧ bicycle handlebar 92‧‧‧ first brake assembly 93‧‧‧ second brake assembly 110, 110′‧‧‧ bearing seat 111, 111′‧‧‧‧ bottom plate 112, 112'‧‧‧ Side wall 110s ‧‧‧ perforation 120, 120′‧‧‧ cover 120s ‧‧‧ perforation 121, 121′‧‧‧ pressing part 130, 130′‧‧‧ wireless communication circuit board 140 ‧‧‧ switch 150, 150'‧‧‧ antenna 160‧‧‧ battery 170‧‧‧ connector 170s‧‧‧ jack 180‧‧‧ battery cover 190‧‧‧dust plug 910‧‧‧central part 920‧‧ ‧Grip part 911‧‧‧Outer surface 1101, 1101'‧‧‧Notch 1111, 1111'‧‧‧ Assembly surface 1111a, 1111a′‧‧‧First side 1111b, 1111b'‧‧‧Second side 1111s, 1111s '‧‧‧Assembly slot 1211, 1211'‧‧‧Stud C, C'‧‧‧ Center point d1, d2, d1', d2'‧‧‧Distance

FIG. 1 is a schematic perspective view of a bicycle head and its variable-speed driving device according to an embodiment of the invention. 2 is a partially enlarged exploded schematic view of the variable speed drive device of FIG. 1. FIG. 3 is a partially enlarged detailed schematic diagram of the variable speed drive device of FIG. 1. FIG. 4 is an intention of FIG. 3 from another perspective. Fig. 5 is a partially enlarged schematic side sectional view of Fig. 1 along 5-5'. 6 is a schematic diagram of the bicycle head of FIG. 1 externally connected to another driving device. 7 is a partially enlarged detailed schematic diagram of a variable speed drive device according to another embodiment of the invention. 8 is a partially enlarged schematic side sectional view of the variable speed drive device of FIG. 7 after assembly.

1‧‧‧Variable speed drive

9‧‧‧ bicycle head

91‧‧‧ Bicycle handlebar

92‧‧‧ First brake assembly

93‧‧‧Second brake assembly

910‧‧‧Central Department

911‧‧‧Outer surface

920‧‧‧ Grip

Claims (14)

A variable speed drive device, adapted to be detachably mounted on an outer surface of a bicycle handlebar, includes: a bearing seat with an assembly surface, the assembly surface is suitable for assembly on the outer surface of the bicycle handlebar, wherein , The assembly mask has an assembly slot and a first side and a second side opposite to each other, the distance from a center point of the assembly slot to the first side of the assembly surface is greater than the center point to the second side Distance, and the shape of the assembling groove matches the outer surface of the bicycle handlebar; a wireless communication circuit board is installed on the bearing base; a switch is provided on the wireless communication circuit board; an antenna is passed through the The wireless communication circuit board is electrically connected to the switch, and the antenna is between the first side and the center point of the assembly slot; and a battery is electrically connected to the wireless communication circuit board, wherein when the switch is triggered , The antenna transmits a shift signal. The variable speed drive device according to claim 1, wherein the distance from one end of the antenna near the first side to the first side is less than the distance from the end to the center point of the assembly groove. The variable speed drive device according to claim 1, wherein the wireless communication circuit board, the switch, the antenna, and the battery are all installed in the carrier. The variable speed drive device according to claim 1, further comprising a cover body, which is detachably assembled on the bearing base to surround the wireless communication circuit board, the switch, the antenna and the battery together with the bearing base. The variable speed drive device according to claim 4, wherein the cover body has a pressing portion that is elastically deformable above the switch. The variable speed drive device according to claim 1 further includes a connector electrically connected to the wireless communication circuit board, and is suitable for a cable insertion to electrically connect another variable speed drive device via the cable. A bicycle head includes: a bicycle handlebar including a central portion and two grip portions connected to opposite sides of the central portion; a first brake component and a second brake component are respectively installed on the two grips On the handle; a first variable speed drive device, which is detachably mounted on the outer surface of either of the central portion and the two grip portions, and is separated from the first brake assembly and the second brake assembly, The first variable speed drive device includes: a wireless communication circuit board; a switch disposed on the wireless communication circuit board; an antenna electrically connected to the switch via the wireless communication circuit board; and a battery electrically connected to the wireless Communication circuit board, wherein when the switch is triggered, the antenna transmits a shift signal. The bicycle head according to claim 7 further includes a second variable speed drive device adapted to drive the transmission of the bicycle for gear up or down, and the first variable speed drive device further includes a connector electrically connected to The wireless communication circuit board is suitable for inserting a cable to be electrically connected to the second variable speed drive device via the cable. The bicycle head according to claim 7, wherein the first variable-speed driving device further includes a bearing seat having an assembly surface facing the bicycle handlebar, and the assembly mask has an assembly groove opposite to each other On one side and a second side, the distance from a center point of the assembly groove to the first side of the assembly surface is greater than the distance from the center point to the second side, and the shape of the assembly groove matches the central portion and The outer surface of any one of the two grip parts, and the antenna is interposed between the first side and the center point of the assembly groove. The bicycle head according to claim 7, wherein the first variable speed drive device can be paired with the variable speed drive device on any one of the first brake assembly and the second brake assembly. The bicycle head according to claim 9, wherein a distance from an end of the antenna near the first side to the first side is smaller than a distance from the end to the center point of the assembly groove. The bicycle head according to claim 9, wherein the wireless communication circuit board, the switch, the antenna and the battery are all installed in the carrier. The bicycle head according to claim 9, wherein the first variable speed drive device further includes a cover body that is detachably assembled on the bearing base to surround the wireless communication circuit board, the Switch, the antenna and the battery. The bicycle head according to claim 13, wherein the cover body has a pressing portion that is elastically deformable above the switch.

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