TWI854587B - Structure of pulley set for motorcycle - Google Patents

Abstract

The present invention relates to a structure of a pulley set for a motorcycle, comprising a main body, plural pulley balls and a pressing plate. The main body is internally provided with a plurality of roller trenches for sliding and displacement of pulley balls therein, wherein each of the roller trenches is able to receive one pulley ball and the plural trenches are radially distributed inside the main body. The pressing plate and the main body are disposed about a same axis and corresponding to each other. The pressing plate is provided with a limiting groove at a position relative to the plural roller trench and the limiting groove further has two stop walls formed on both sides thereof, respectively. Accordingly, as the pulley set rotates, the main body in the process of axial displacement allows the pulley balls to roll inside the roller trench and limiting groove and be limited in position by stop walls of the limiting groove, so as to achieve the effect of the pulley balls not turning out of the trenches or grooves and show the efficacy of cost saving.

Description

Motorcycle pulley assembly structure

The present invention relates to a motorcycle pullitoid assembly structure, and in particular to a pullitoid assembly structure that can provide pullitoid assembly linkage and effectively limit the pullitoid beads as its invention application.

According to the automatic transmission or stepless transmission used on motorcycles, it is mainly composed of a movable transmission face plate with multiple hammer chambers, and each hammer chamber is equipped with a push plate hammer, and each push plate hammer is restricted by a contact plate. After the movable transmission face plate is started, the push plate hammer can be used to push the movable transmission face plate along the central axis toward the transmission face plate through the centrifugal outward displacement of the push plate hammer. The distance between the movable transmission face plate and the transmission face plate is reduced and changed, so that the V-shaped transmission belt between the movable transmission face plate and the transmission face plate changes the transmission position with the rotation speed of the movable transmission face plate, thereby achieving the efficiency of automatic transmission.

However, as shown in FIG. 8, a plurality of hammer chambers (41) having an inner inclined pressure push surface are radially formed at the center of the movable driving face plate (4), and a push plate hammer (5) is accommodated in each hammer chamber (41), and each push plate hammer (5) is restricted by an inclined plate body (61) of a contact plate (6) on the inner inclined pressure push surface; when the movable driving face plate (4) is driven and started by the center shaft, it can be driven by The centrifugal outward displacement of the push plate hammer (5) forces the movable drive plate (4) along the central axis toward the drive plate, and the distance between the movable drive plate (4) and the drive plate is reduced and changed, so that the V-shaped drive belt between the movable drive plate (4) and the drive plate changes its transmission position from the inside to the outside as the rotation speed of the movable drive plate (4) increases, thereby achieving a change in the transmission speed ratio of the V-shaped drive belt.

Although the conventional stepless transmission [as shown in FIG. 8] can force the movable driving face plate (4) to move axially by the centrifugal outward displacement of the push plate hammer (5), resulting in a change in the distance between the push plate hammer (5) and the driving face plate (4), thereby achieving a change in the driving position of the V-shaped driving belt, the movable driving face plate (4) is driven to rotate by the driving face plate on the central axis through the V-shaped driving belt. In order to prevent the push plate hammer (5) from deviating from the inclined plate body portion of the abutting plate (to prevent the detent track surface from deviating), a plurality of guide posts (42) must be extended outward on the plate body between the hammer chambers (41), and a plurality of guide posts (42) must be provided on the abutting plate body. The inclined disc body (61) of the disc (6) is concavely formed with a plurality of recesses (62), and a plurality of notches (621) are formed on the recesses (62) relative to the guide pillars, and a guide groove member (63) is provided on the notches (621). The guide pillars (42) are embedded in the guide groove member (63), causing the movable driving disc (4) to undergo axial displacement and rotation, and simultaneously rotate with the contact disc (6).

The movable driving plate (4) in rotation drives the abutment plate (6) in the guide groove (63) of the abutment plate (6) through the guide column. The abutment plate (6) which cannot be axially displaced will inevitably form a strong friction resistance between the guide column (42) and the guide groove (63) during the axial displacement of the movable driving plate (4). This will reduce the friction between the movable driving plate (4) and the guide groove (63). The flexibility of the transmission face plate spacing change, at the same time, also need to select high-strength wear-resistant guide groove parts, relatively increase the overall manufacturing cost; and as mentioned above, each push plate hammer (5) on the inner inclined pressure push surface is restricted by a bevel plate body (61) of a contact plate (6), during the transmission process, the push plate hammer (5) will have an uncontrolled flip-out phenomenon, resulting in unsmooth transmission. In addition, because there is a reserved gap required for displacement between the guide column (42) itself and the guide groove part (63), it is easy to produce instability and noise during operation.

Therefore, the inventor, in view of this, has provided a motorcycle pulley assembly structure based on his rich design development and actual manufacturing experience in the relevant industry for many years, in order to improve the use effect of the drive disc and achieve the purpose of better practical value.

The main purpose of the present invention is to provide a motorcycle pullitoid assembly structure, in particular, a pullitoid assembly structure that can provide pullitoid assembly linkage and effectively limit the pullitoid beads, while effectively reducing the manufacturing cost.

The main purpose and function of the motorcycle pulley assembly structure of the present invention are achieved by the following specific technical means:

It mainly includes a disc body, several puli beads and a pressure plate, wherein several roller grooves are radially arranged in the inner ring of the disc body, each roller groove contains a puli bead and provides sliding displacement, the pressure plate and the disc body are coaxial and relatively arranged, a limit groove is arranged at the pressure plate corresponding to the roller groove, and side baffles are formed on both sides of the limit groove; thereby, the puli disc assembly in rotation can make the puli bead roll in the roller groove and the limit groove and be limited by the side baffles during the axial displacement of the disc body, so as to achieve the effect of not turning over the bead, and also have the effect of saving costs.

The present invention:

1: Plate body

11: Latch surface

12: Driving surface

121: Roller groove

122: Side wall

13: Disc shaft hole

2: Pulizhu

3: Press plate

31: Axle hole

32: Limiting groove

321: Side retaining wall

Existing technology:

4: Movable transmission panel

41: Hammer Room

42: Guide pillar

5: Pushing hammer

6: Stick to the plate

61: Inclined disc body

62: Concave part

621: Gap

63: Guide groove parts

Figure 1: A three-dimensional exploded schematic diagram of the present invention.

Figure 2: Schematic diagram of the combined appearance of the present invention.

Figure 3: A three-dimensional partial cross-sectional schematic diagram of the present invention.

Figure 4: Schematic diagram of the invention in top view and cross-section.

Figure 5: Schematic cross-sectional view of the present invention.

Figure 6: Schematic diagram of the operation of the Priligy beads of the present invention.

Figure 7: Schematic diagram 2 of the operation of the Priligy beads of the present invention.

Figure 8: 3D decomposition diagram of existing technology.

In order to make the technical content, purpose of the invention and the effects achieved by the present invention more complete and clear, they are described in detail below, and please refer to the disclosed drawings and figure numbers:

First, please refer to the first to third figures, which are schematic diagrams of the three-dimensional decomposition, assembly appearance, and partial cross-sectional view of the motorcycle pulley assembly structure of the present invention, which includes: a pulley body (1), which has a resistance surface (11) in contact with the belt and an opposite driving surface (12), and a pulley shaft hole (13) is provided in the center, and a plurality of radially distributed roller grooves (121) are provided inside the driving surface (12), and each roller groove (121) is divided into two sides. A side baffle wall (122) is provided; Diplomatic beads (2) are respectively accommodated in the roller groove (121) of the disc body (1); a pressure plate (3) is provided with an axial hole (31) at the center, and is coaxial with the disc body (1) and arranged opposite to the driving surface (12); a limiting groove (32) is provided at the pressure plate (3) corresponding to the roller groove (121), and side baffle walls (321) are formed on both sides of the limiting groove (32).

When assembled for use, please refer to the first to seventh figures, the disc shaft hole (13) of the disc body (1) and the shaft hole (31) of the pressure plate (3) are correspondingly inserted into the vehicle drive shaft, and the pressure plate (3) and the drive shaft are fixed to form a linkage, and at the same time, the puli beads (2) are respectively placed in each roller groove (121) [the groove is not limited to the 6 grooves in the figure, and can be a plurality of grooves [way]; the transmission and structure of the motorcycle engine power of the present invention are roughly the same as those described in the prior art; when the motorcycle starts to refuel, the power transmission shaft drives the pressure plate (3) and the disc body (1) to rotate, and the puli beads (2) in the roller groove (121) and the limit groove (32) will twist and abut against the opposite direction (right side) as the rotation direction (left turn) On the side baffle wall (122) and the side baffle wall (321) [as shown in the fourth and fifth figures], when the puli beads (2) in the roller groove (121) are moved outward by the centrifugal force, the initial rotational torque causes the puli beads (2) to centrifugally swing along the roller groove (121) of the disc body (1) and the limiting groove (32) of the pressure plate (3). (2) When the displacement is to the outside, the distance between the disc body (1) and the pressure plate (3) is gradually pulled apart [relatively changing the belt transmission speed], and at this time, the puli ball (2) is also limited and held by the baffle walls (122) on both sides of the roller groove (121) and the baffle walls (321) on both sides of the limit groove (32) [as shown in Figures 6-7], achieving the effect of preventing the ball from turning over.

It is worth mentioning that the present invention adopts a design that the puli beads (2) are linked by the two side baffles (122) of the roller groove (121) of the plate body (1) and the two side baffles (321) of the limit groove (32) of the pressure plate (3), so that the pressure plate (3) and the puli plate body (1) are linked to operate, replacing the operation mode of the traditional puli plate that requires the installation of guide pillars and guide grooves, effectively achieving the goal of reducing the manufacturing cost; even without changing the traditional puli plate structure, the pressure plate (3) of the present invention can be used, and it is only necessary to make the side baffles (321) avoid the guide pillars and guide grooves.

However, the aforementioned embodiments or drawings do not limit the product structure or usage of the present invention. Any appropriate changes or modifications by those with ordinary knowledge in the relevant technical field should be considered as not departing from the patent scope of the present invention.

From the above description of the use and implementation of the present invention, it can be seen that compared with the existing technical means, the present invention mainly has the following advantages:

1. The motorcycle pulley plate assembly structure of the present invention uses the pulley beads to hold and link the two side baffle walls of the roller groove and the two side baffle walls of the limit groove, so that the pulley beads will not be lost during operation.

2. As mentioned above, when the puli beads are stably held during operation, no noise will be generated, achieving a stable, smooth and noise-free operation effect.

3. The motorcycle pulley assembly structure of the present invention utilizes the design of the pulley bead linkage between the two side baffles of the roller groove of the plate body and the two side baffles of the limit groove of the pressure plate, so that the pressure plate and the plate body can be linked to each other to replace the traditional pulley operation mode that requires the installation of guide posts and guide groove parts. It is unnecessary to form traditional guide posts, recesses, notches, or make guide groove parts on the pulley, which can effectively reduce the manufacturing cost for the manufacturer.

In summary, the embodiments of the present invention can achieve the expected effects, and the specific structure disclosed is not only not seen in similar products, but also has not been disclosed before the application. It fully complies with the provisions and requirements of the Patent Law. Therefore, an application for invention patent is filed in accordance with the law. I sincerely request that you review it and grant the patent. I would really appreciate the convenience.

1: Plate body

11: Latch surface

12: Driving surface

121: Roller groove

122: Side wall

13: Disc shaft hole

2: Pulizhu

3: Press plate

31: Axle hole

32: Limiting groove

321: Side retaining wall

Claims (1)

A motorcycle pulley assembly structure includes: A pulley body, which has a bearing surface in contact with a belt and a driving surface opposite to the bearing surface, and a pulley shaft hole is provided in the center. The driving surface is surrounded by a plurality of radially distributed roller grooves, and side baffles are provided on both sides of each roller groove; A plurality of pulley beads are respectively accommodated in the roller grooves of the pulley body; A pressure plate, which has an shaft hole in the center and is coaxial with the pulley body and opposite to the driving surface. A limit groove is provided at the pressure plate corresponding to the roller groove, and side baffles are formed on both sides of the limit groove.

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