Electronic transmission output rotation structure and electronic transmission

Abstract

The utility model discloses an electronic transmission output rotation structure and electronic transmission, the electronic transmission output rotation structure comprises: a gear box, an output swing arm and a connecting shaft, the gear box is provided with an output shaft, the output shaft is fixedly connected with the output swing arm, the connecting shaft is detachably connected with the output swing arm, the connecting shaft penetrates through the output shaft and the output swing arm, the connecting shaft and the output shaft are coaxially arranged, and the output shaft rotates to drive the output swing arm and the connecting shaft to rotate. The output shaft is fixedly connected with the output swing arm, and the connecting shaft is detachably connected with the output swing arm, so that the output shaft rotates to drive the output swing arm and the connecting shaft to rotate together, the friction loss between the output swing arm and the connecting shaft is eliminated, and the service life of the output swing arm and the connecting shaft is prolonged; and meanwhile, unnecessary rotation of the connecting shaft caused by structural assembly and the like is avoided, so that energy loss is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of bicycles, in particular to an electronic transmission output rotation structure and an electronic transmission. Background Art

[0002] The output arm (106) in the transmission disclosed in patent EP3085613A1 is rotatably arranged around the first connecting rod pin (72), and there is friction loss between the output arm and the first connecting rod pin, which not only increases the wear of the output arm and the first connecting rod pin, but also reduces the service life of the output arm and the first connecting rod pin; and the first connecting rod pin will produce unnecessary rotation due to structural assembly and other reasons, which brings uncertainty to the drive system and causes energy loss. Utility Model Content

[0003] The utility model aims to provide an electronic transmission output rotation structure and an electronic transmission, aiming to solve the problem of friction loss between an output arm and a first connecting rod pin.

[0004] An embodiment of the utility model provides an electronic transmission output rotation structure, comprising: a gear box, an output swing arm and a connecting shaft, wherein the gear box is provided with an output shaft, the output shaft is fixedly connected to the output swing arm, the connecting shaft is detachably connected to the output swing arm, the connecting shaft passes through the output shaft and the output swing arm, the connecting shaft is coaxially arranged with the output shaft, and the rotation of the output shaft drives the output swing arm and the connecting shaft to rotate.

[0005] Furthermore, one of the connecting shaft and the output swing arm is provided with a fixing portion, and the other is provided with a matching portion that matches with the fixing portion. When the fixing portion is installed in the matching portion, the connecting shaft and the output swing arm are relatively fixed.

[0006] Furthermore, the fixing portion and the matching portion match in shape, and the fixing portion and the matching portion are non-circular in shape.

[0007] Furthermore, it also includes: an outer connecting rod, which is installed on the connecting shaft, the outer connecting rod is fixedly connected to one end of the output swing arm, the output shaft is fixedly connected to the other end of the output swing arm, and the connecting shaft is arranged to pass through the other end of the output swing arm.

[0008] Furthermore, the outer connecting rod is fixedly connected to one end of the output swing arm by a screw; a threaded hole is provided on the outer connecting rod, a through hole is provided at one end of the output swing arm, a thread is provided at the portion where the screw is connected to the outer connecting rod, and a smooth surface is provided at the portion where the screw is connected to the output swing arm.

[0009] Furthermore, the output shaft is riveted to the other end of the output swing arm.

[0010] Furthermore, it also includes: an outer body, the outer body is arranged on the gear box, and the connecting shaft is rotatably mounted on the outer body.

[0011] Furthermore, it also includes: a first mounting member and a second mounting member, one end of the connecting shaft is mounted on the outer body through the first mounting member, and the other end of the connecting shaft is mounted on the outer body through the second mounting member.

[0012] Furthermore, it also includes: a limit member for limiting the movement of the connecting shaft toward the second mounting member, a limit structure for limiting the movement of the connecting shaft toward the first mounting member is provided on the connecting shaft, the limit member is installed on the outer body, and the limit member is provided corresponding to the other end of the connecting shaft.

[0013] The embodiment of the utility model further provides an electronic transmission, comprising: the above-mentioned electronic transmission output rotation structure.

[0014] The utility model discloses an electronic transmission output rotation structure and an electronic transmission. The electronic transmission output rotation structure includes: a gear box, an output swing arm and a connecting shaft. The gear box is provided with an output shaft, the output shaft is fixedly connected to the output swing arm, the connecting shaft is detachably connected to the output swing arm, the connecting shaft runs through the output shaft and the output swing arm, the connecting shaft is coaxially arranged with the output shaft, and the output shaft rotates to drive the output swing arm and the connecting shaft to rotate. The utility model connects the output shaft to the output swing arm, and detachably connects the connecting shaft to the output swing arm, so that the rotation of the output shaft drives the output swing arm and the connecting shaft to rotate together, thereby eliminating the friction loss between the output swing arm and the connecting shaft, and prolonging the service life of the output swing arm and the connecting shaft. At the same time, it also avoids unnecessary rotation of the connecting shaft due to structural assembly and other reasons, thereby reducing energy loss. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 is a schematic diagram of the structure of an electronic transmission;

[0017] Figure 2 It is a structural schematic diagram of the output rotation structure of the electronic transmission;

[0018] Figure 3 is a schematic diagram of the structure of the gearbox;

[0019] Figure 4 It is a structural schematic diagram of the output rotation structure of the electronic transmission from a first perspective (without the outer connecting rod);

[0020] Figure 5 A schematic diagram of the structure of the output rotating structure of the electronic transmission from a second perspective (without the outer connecting rod);

[0021] Figure 6 It is a schematic diagram of the structure between the output swing arm and the connecting shaft;

[0022] Figure 7 It is the structural diagram of the output swing arm;

[0023] Figure 8 It is a structural schematic diagram of the connecting shaft;

[0024] Fig. 9 It is a schematic diagram of the structure of the screw;

[0025] Description of the markings in the figure:

[0026] 1. Gearbox; 2. Output swing arm; 3. Connecting shaft; 4. Output shaft; 5. Fixing part; 6. Matching part; 7. External connecting rod; 8. Screw; 9. External body; 10. First mounting part; 11. Second mounting part; 12. Limiting part; 13. Limiting structure. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] It should be understood that when used in this specification and the appended claims, the terms "include" and "comprises" indicate the presence of described features, integers, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or combinations thereof.

[0029] It should also be understood that the terms used in this utility model specification are only for the purpose of describing specific embodiments and are not intended to limit the utility model. As used in this utility model specification and the appended claims, unless the context clearly indicates otherwise, the singular forms "a", "an" and "the" are intended to include plural forms.

[0030] It should be further understood that the term “and / or” used in the present specification and the appended claims refers to any combination and all possible combinations of one or more of the associated listed items, and includes these combinations.

[0031] See also Figure 1-5 The utility model provides an electronic transmission output rotation structure, including: a gear box 1, an output swing arm 2 and a connecting shaft 3. The gear box 1 is provided with an output shaft 4, the output shaft 4 is fixedly connected to the output swing arm 2, the connecting shaft 3 is detachably connected to the output swing arm 2, the connecting shaft 3 runs through the output shaft 4 and the output swing arm 2, the connecting shaft 3 is coaxially arranged with the output shaft 4, and the rotation of the output shaft 4 drives the output swing arm 2 and the connecting shaft 3 to rotate.

[0032] In this embodiment, the output shaft 4 is fixedly connected to the output swing arm 2 so that the output shaft 4 and the output swing arm 2 are relatively fixed, and the connecting shaft 3 is detachably connected to the output swing arm 2 so that the output swing arm 2 and the connecting shaft 3 are relatively fixed. In this way, the output shaft 4, the output swing arm 2 and the connecting shaft 3 can be regarded as a whole, and the rotation of the output shaft 4 will drive the output swing arm 2 and the connecting shaft 3 to rotate together, which not only eliminates the friction loss between the output swing arm 2 and the connecting shaft 3, and improves the service life of the output swing arm 2 and the connecting shaft 3, but also avoids unnecessary rotation of the connecting shaft 3 due to structural assembly and other reasons, thereby reducing energy loss.

[0033] Among them, the detachable connection between the connecting shaft 3 and the output swing arm 2 can be a snap connection between the connecting shaft 3 and the output swing arm 2, a threaded connection between the connecting shaft 3 and the output swing arm 2, or a key connection between the connecting shaft 3 and the output swing arm 2.

[0034] In this embodiment, please refer to Figure 6-8 One of the connecting shaft 3 and the output swing arm 2 is provided with a fixing portion 5, and the other is provided with a matching portion 6 that matches with the fixing portion 5. When the fixing portion 5 is installed into the matching portion 6, the connecting shaft 3 and the output swing arm 2 are relatively fixed. The setting of the fixing portion 5 and the matching portion 6 not only realizes the relative fixation between the connecting shaft 3 and the output swing arm 2, reduces the friction loss between the connecting shaft 3 and the output swing arm 2, but also realizes the detachable connection between the connecting shaft 3 and the output swing arm 2, thereby improving the installation and maintenance efficiency of the connecting shaft 3 and the output swing arm 2.

[0035] Specifically, the fixing portion 5 is a protrusion setting, and the matching portion 6 is a groove setting. By installing the protrusion into the groove, the detachable connection between the connecting shaft 3 and the output swing arm 2 can be achieved. The setting of the protrusion and the groove can better transmit the torque between the output swing arm 2 and the connecting shaft 3, and at the same time can better bear the torque between the output swing arm 2 and the connecting shaft 3.

[0036] Furthermore, the fixing portion 5 and the matching portion 6 match in shape, and the fixing portion 5 and the matching portion 6 are non-circular in configuration. The non-circular configuration enables the output swing arm 2 to rotate and drive the connecting shaft 3 to rotate when the fixing portion 5 is installed in the matching portion 6 .

[0037] In this embodiment, please refer to Figure 2-5 , and also includes: an outer connecting rod 7, the outer connecting rod 7 is installed on the connecting shaft 3, the outer connecting rod 7 is fixedly connected to one end of the output swing arm 2, the output shaft 4 is fixedly connected to the other end of the output swing arm 2, and the connecting shaft 3 is arranged through the other end of the output swing arm 2. In this embodiment, the outer connecting rod 7 is installed on the connecting shaft 3 to achieve the installation and fixation of the outer connecting rod 7, and the relative fixation between the outer connecting rod 7 and the output swing arm 2 and the relative fixation between the outer connecting rod 7 and the connecting shaft 3 is achieved by fixing the outer connecting rod 7 to one end of the output swing arm 2, fixing the output shaft 4 to the other end of the output swing arm 2, and setting the connecting shaft 3 through the other end of the output swing arm 2. In this way, the outer connecting rod 7, the output shaft 4, the output swing arm 2 and the connecting shaft 3 can be regarded as a whole. When the output shaft 4 rotates, it drives the output swing arm 2 to rotate. At the same time, the rotation of the output swing arm 2 will drive the outer connecting rod 7 and the connecting shaft 3 to rotate together, thereby avoiding the friction loss between the outer connecting rod 7 and the output swing arm 2 and the connecting shaft 3 respectively, and improving the service life of the outer connecting rod 7, the output swing arm 2 and the connecting shaft 3.

[0038] In this embodiment, there are many ways to connect the output swing arm 2 and the outer connecting rod 7, such as welding, pin connection, riveting and threaded connection, etc. Among them, the processing difficulty of the threaded hole and the through hole is similar, but it is more convenient to install and repair. When one of the components of the output swing arm 2 and the outer connecting rod 7 is damaged, only the damaged one needs to be replaced, which saves resources and does not require riveting or welding in the future. Preferably, the output swing arm 2 and the outer connecting rod 7 are connected by a threaded connection, that is, the outer connecting rod 7 and one end of the output swing arm 2 are connected by a screw 8 (such as Figure 4 and Fig. 9 The outer connecting rod 7 is fixedly connected with the output swing arm 2 as shown; a threaded hole is provided on the outer connecting rod 7, a through hole is provided at one end of the output swing arm 2, a thread is provided at the portion where the screw 8 is connected to the outer connecting rod 7, and a smooth surface is provided at the portion where the screw 8 is connected to the output swing arm 2, wherein the threaded connection between the screw 8 and the outer connecting rod 7 realizes the installation and fixation of the screw 8, and the smooth surface reduces the friction loss between the screw 8 and the output swing arm 2, thereby improving the service life of the screw 8 and the output swing arm 2.

[0039] In this embodiment, the output shaft 4 is riveted to the other end of the output swing arm 2, and the riveting improves the tensile, compressive and shear strengths between the output shaft 4 and the output swing arm 2, thereby improving the reliability of the connection between the output shaft 4 and the output swing arm 2.

[0040] It should be noted that the output shaft 4 and the other end of the output swing arm 2 may also adopt a structural design of a fixing portion 5 and a matching portion 6 .

[0041] In this embodiment, please refer to Figure 2 and Figure 4 , and also includes: an outer body 9, which is arranged on the gear box 1, and the connecting shaft 3 is rotatably mounted on the outer body 9; the outer body 9 is mainly used to support the connecting shaft 3 and the components connected to the connecting shaft 3.

[0042] Furthermore, the outer body 9 is mounted on the gearbox 1 by screws, so that when the electronic transmission is transported, the outer body 9 can be disassembled and transported, which makes the transportation of the electronic transmission more convenient. At the same time, the connecting shaft 3 always rotates relative to the entire gearbox 1, so there is always friction loss between the connecting shaft 3 and the gearbox 1. The setting of the outer body 9 enables the outer body 9 to be replaced alone after being damaged by friction, without replacing the entire gearbox 1, and the maintenance and replacement costs are lower.

[0043] In this embodiment, in order to reduce the friction loss between the outer body 9 and the connecting shaft 3, please refer to Figure 4 and Figure 5 , further comprising: a first mounting member 10 and a second mounting member 11, one end of the connecting shaft 3 is mounted on the outer body 9 through the first mounting member 10, and the other end of the connecting shaft 3 is mounted on the outer body 9 through the second mounting member 11; the arrangement of the first mounting member 10 and the second mounting member 11 enables friction loss to occur between the connecting shaft 3 and the first mounting member 10 and the second mounting member 11 when the connecting shaft 3 rotates, thereby avoiding friction loss between the outer body 9 and the connecting shaft 3 and improving the service life of the outer body 9, and the manufacturing cost of the first mounting member 10 and the second mounting member 11 is lower than that of the outer body 9, thereby reducing the replacement and maintenance costs.

[0044] In this embodiment, in order to realize the installation of the connecting shaft 3 on the outer body 9 and prevent the connecting shaft 3 from being separated from the outer body 9, it also includes: a limiting member 12 (such as Figure 2 The connecting shaft 3 is provided with a limiting structure 13 (as shown in FIG. Figure 8 As shown), a limit member 12 is installed on the outer body 9, and the limit member 12 is arranged corresponding to the other end of the connecting shaft 3; the arrangement of the limit member 12 and the limit structure 13 can realize the limitation of the two ends of the connecting shaft 3 to prevent the connecting shaft 3 from detaching from the outer body 9 after installation, wherein the diameter of the limit structure 13 is larger than the diameter of the output shaft 4, so that the output shaft 4 can limit the movement of the connecting shaft 3 toward the first mounting member 10.

[0045] Furthermore, the limit member 12 is installed on the outer body 9 by screws. Such a design makes it possible for when the device needs to be disassembled, it is only necessary to remove the limit member 12, and then pull out the connecting shaft 3 to realize the disassembly of the output swing arm 2, the outer connecting rod 7, the first mounting member 10 and the second mounting member 11, thereby improving the disassembly efficiency of the entire electronic transmission, and further improving the maintenance efficiency of the entire device.

[0046] In this embodiment, the connecting shaft 3 may be a pin, which is a common mechanical fastener that can be used to connect two parts or components and ensure the relative position and fixation between the parts.

[0047] This embodiment also provides an electronic transmission, including: the electronic transmission output rotation structure of the above embodiment.

[0048] The various embodiments in the specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same and similar parts between the various embodiments can be referred to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the method part description. It should be pointed out that for ordinary technicians in this technical field, without departing from the principle of the utility model, the utility model can also be improved and modified, and these improvements and modifications also fall within the scope of protection of the claims of the utility model.

[0049] It should also be noted that, in this specification, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive.

[0050] Inclusion, so that the process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of more restrictions, the elements defined by the sentence "including a..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

Claims

1. An electronic transmission output rotation structure, characterized in that: include: A gearbox, an output swing arm and a connecting shaft, wherein the gearbox is provided with an output shaft, the output shaft is fixedly connected to the output swing arm, the connecting shaft is detachably connected to the output swing arm, the connecting shaft passes through the output shaft and the output swing arm, the connecting shaft is coaxially arranged with the output shaft, and the rotation of the output shaft drives the output swing arm and the connecting shaft to rotate.

2. The electronic transmission output rotation structure according to claim 1, characterized in that: One of the connecting shaft and the output swing arm is provided with a fixing portion, and the other is provided with a matching portion that matches with the fixing portion. When the fixing portion is installed in the matching portion, the connecting shaft and the output swing arm are relatively fixed.

3. The electronic transmission output rotation structure according to claim 2, characterized in that: The fixing portion and the matching portion match in shape, and the fixing portion and the matching portion are non-circular in configuration.

4. The electronic transmission output rotation structure according to claim 1, characterized in that: Also includes: An outer connecting rod is installed on the connecting shaft, the outer connecting rod is fixedly connected to one end of the output swing arm, the output shaft is fixedly connected to the other end of the output swing arm, and the connecting shaft passes through the other end of the output swing arm.

5. The electronic transmission output rotation structure according to claim 4, characterized in that: The outer connecting rod is fixedly connected to one end of the output swing arm by a screw; a threaded hole is provided on the outer connecting rod, a through hole is provided at one end of the output swing arm, a thread is provided at the portion where the screw is connected to the outer connecting rod, and a smooth surface is provided at the portion where the screw is connected to the output swing arm.

6. The electronic transmission output rotation structure according to claim 4, characterized in that: The output shaft is riveted to the other end of the output swing arm.

7. The electronic transmission output rotation structure according to claim 1, characterized in that: Also includes: An outer body is arranged on the gear box, and the connecting shaft is rotatably mounted on the outer body.

8. The electronic transmission output rotation structure according to claim 7, characterized in that: Also includes: A first mounting member and a second mounting member, one end of the connecting shaft is mounted on the outer body through the first mounting member, and the other end of the connecting shaft is mounted on the outer body through the second mounting member.

9. The electronic transmission output rotation structure according to claim 8, characterized in that: Also includes: A limit member for limiting the movement of the connecting shaft toward the second mounting member, wherein a limit structure for limiting the movement of the connecting shaft toward the first mounting member is arranged on the connecting shaft, the limit member is installed on the outer body, and the limit member is arranged corresponding to the other end of the connecting shaft.

10. An electronic transmission, characterized in that: include: An electronic transmission output rotation structure as described in any one of claims 1 to 9.

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