Transmission damping structure

Abstract

The utility model relates to a kind of transmission buffer structure, it includes: buffer lower shell, the buffer lower shell includes lower shell ontology and the limiting transmission hole being opened at the center of the lower shell ontology;Buffer upper shell, the buffer upper shell is engaged on the buffer lower shell and is formed with the buffer lower shell and is included space;The buffer lower shell further include the first limit protrusion formed on the shell ontology and located in the included space, the buffer upper shell has the second limit protrusion in the included space and with the first limit protrusion cooperation of multiple pieces;Elastic element, the elastic element is arranged in the included space and is engaged between the first limit protrusion of multiple pieces and the second limit protrusion of multiple pieces.It is realized between the buffer of buffer upper shell and buffer lower shell, reduce the impact between them to its internal structure, beneficial to prolong its service life.

Description

Technical Field

[0001] This utility model belongs to the technical field of automotive transmission parts and relates to a transmission buffer structure. Background Technology

[0002] The gear shift actuator is a key component of an automotive transmission system. Its main function is to drive the gearbox to change gears and perform shifting based on instructions from the gear shift controller, thereby enabling the vehicle to operate normally. Currently, gear shift actuators primarily use pneumatic, hydraulic, or traditional mechanical methods to drive the shift fork and achieve gear changes.

[0003] Chinese invention patent application number 202411723599.1 discloses a self-locking gear shifting actuator. This actuator includes a drive motor for providing torque; a transmission assembly connected to the output end of the drive motor to transmit its output torque; a gear self-locking assembly including an input locking gear and an output locking gear, the input locking gear receiving the torque transmitted by the transmission assembly, and the input and output locking gears having an engaged state, a disengaged state, and a locked state; in the engaged state, rotation of the input locking gear drives rotation of the output locking gear; in the disengaged state, the input locking gear disengages from the output locking gear; in the locked state, the input locking gear blocks rotation of the output locking gear; an output shaft connected to the output locking gear and capable of rotating with it; and a shift fork connected to the output shaft and performing the shifting function. This gear shifting actuator effectively solves the problem of the shift fork disengaging when the transmission is applying torque, but it cannot reduce the impact of the shock generated during gear shifting by the car's transmission, electric drive axle, etc., on the internal transmission components of the actuator. Summary of the Invention

[0004] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a transmission buffer structure.

[0005] To achieve the above objectives, this utility model adopts the following technical solution: a transmission buffer structure, comprising:

[0006] A buffer lower shell, the buffer lower shell including a lower shell body and a limiting transmission hole opened at the center of the lower shell body;

[0007] The upper buffer shell engages with the lower buffer shell and together they form a receiving space; the lower buffer shell further includes a plurality of first limiting protrusions formed on the shell body and located within the receiving space, and the upper buffer shell has a plurality of second limiting protrusions located within the receiving space and cooperating with the plurality of first limiting protrusions.

[0008] An elastic element is disposed within the receiving space and is engaged between a plurality of first limiting protrusions and a plurality of second limiting protrusions.

[0009] Ideally, the buffer upper shell includes an upper shell body and a first shaft hole opened at the center of the upper shell body and corresponding to the limiting transmission hole, and multiple second limiting protrusions are formed on the upper shell body.

[0010] Ideally, the lower shell body includes a lower shell retaining ring and a limiting plate formed within the lower shell retaining ring, with the limiting transmission hole located at the center of the limiting plate.

[0011] Furthermore, the upper shell body includes a disc body and a plurality of pin holes formed on the disc body, the first pin hole being formed at the center of the disc body, and the pin holes being formed on the end face of the disc body opposite to the buffer lower shell.

[0012] Furthermore, the buffer lower shell also includes at least one limiting hole formed on the limiting plate, and a limiting block that can be embedded in the limiting hole is formed on the disc or the second limiting protrusion.

[0013] Furthermore, the upper shell body also includes a convex ring formed on the circumferential surface of the disk.

[0014] Furthermore, the elastic element includes an element body, a second shaft hole formed at the center of the element body and coaxial with the first shaft hole, and a plurality of lugs formed on the circumferential surface of the element body and sandwiched between the first limiting protrusion and the second limiting protrusion.

[0015] As a preferred example, the side of the first limiting protrusion is formed with a first concave arc groove, the side of the second limiting protrusion is formed with a second concave arc groove, and the side of the lug is formed with a convex arc portion that cooperates with the first concave arc groove and the second concave arc groove.

[0016] The beneficial effects of this application are: the transmission buffer structure of this utility model, by using a buffer lower shell, a buffer upper shell and an elastic element with a specific structure to cooperate, thereby using the elastic element stuck between the first limiting protrusion and the second limiting protrusion to buffer, thereby realizing the buffer between the buffer upper shell and the buffer lower shell, reducing the impact between them on the internal structure, and helping to extend its service life. Attached Figure Description

[0017] Figure 1 This is an exploded view of the transmission buffer structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the upper buffer shell in the transmission buffer structure of this utility model;

[0019] Figure 3 This is a diagram showing the usage state of the transmission buffer structure of this utility model. Detailed Implementation

[0020] The present application will now be described in further detail with reference to the accompanying drawings and specific embodiments. Similar elements in different embodiments are referred to by related similar element reference numerals. In the following embodiments, many details are described to facilitate a better understanding of the present application. However, those skilled in the art will readily recognize that some features may be omitted in different situations, or may be replaced by other elements, materials, or methods. In some cases, certain operations related to the present application are not shown or described in the specification. This is to avoid obscuring the core parts of the present application with excessive description. For those skilled in the art, detailed description of these related operations is not necessary; they can fully understand the related operations based on the description in the specification and general technical knowledge in the art.

[0021] Furthermore, the features, operations, or characteristics described in the specification can be combined in any suitable manner to form various embodiments, and the operational steps involved in each embodiment can also be rearranged or adjusted in a manner that is obvious to those skilled in the art. Therefore, the specification and drawings are only for clearly describing a particular embodiment and do not imply that they represent the necessary components and / or order.

[0022] The serial numbers assigned to components in this document, such as "first" and "second," are used only to distinguish the described objects and have no sequential or technical meaning. The terms "connection" and "linkage" used in this application, unless otherwise specified, include both direct and indirect connections (linkages).

[0023] like Figure 1 and Figure 2 The transmission buffer structure shown mainly includes a matching upper buffer shell 11, an elastic element 12, and a lower buffer shell 13.

[0024] The buffer lower shell 13 includes a lower shell body and a limiting transmission hole 133 formed at the center of the lower shell body. The limiting transmission hole 133 is not circular; it can be square, elliptical, or other conventional shapes. This is because it needs to cooperate with the output shaft 3 (the output shaft 3 has a protruding structure formed on its circumference (usually formed by integral molding or machining, etc., the same below) that cooperates with the limiting transmission hole 133, such as a protrusion 31 of a corresponding shape). Thus, when the buffer lower shell 13 rotates around its axis under the action of external force, the cooperation between the protruding structure and the limiting transmission hole 133 can drive the output shaft 3 to rotate synchronously. In this embodiment, the lower shell body includes a lower shell retaining ring 132 and a limiting plate 131 formed within the lower shell retaining ring 132. The limiting transmission hole 133 is formed at the center of the limiting plate 131.

[0025] The upper buffer shell 11 engages with the lower buffer shell 13 and together they form a receiving space. Since the upper buffer shell 11 engages with the lower buffer shell 13, when the upper buffer shell 11 rotates with its axis of rotation driven by the external transmission structure, it will drive the lower buffer shell 13 to rotate synchronously. This will result in hard contact between the upper buffer shell 11 and the lower buffer shell 13. To address the aforementioned issues, the lower buffer shell 13 further includes multiple first limiting protrusions 135 formed on the shell body and located within the accommodating space, and the upper buffer shell 11 has multiple second limiting protrusions 115 located within the accommodating space and cooperating with the multiple first limiting protrusions 135. In this embodiment, there are two first limiting protrusions 135 symmetrical about the axis of the limiting transmission hole 133, and there are also two second limiting protrusions 115 symmetrical about the axis of the limiting transmission hole 133. The first limiting protrusions 135 and the second limiting protrusions 115 are staggered. Meanwhile, an elastic element 12 is disposed within the accommodating space and is engaged between the multiple first limiting protrusions 135 and the multiple second limiting protrusions 115. When the upper buffer shell 11 drives the lower buffer shell 13 to rotate, the first limiting protrusion 135 and the second limiting protrusion 115 make contact through the elastic element 12 to achieve buffering, thereby realizing the buffering between the upper buffer shell 11 and the lower buffer shell 13, reducing the impact between them on their internal structure, and helping to extend their service life.

[0026] In this embodiment, the buffer upper shell 11 includes an upper shell body and a first shaft hole 113 (the first shaft hole 113 is located at the center of the disc body 111) that is opened at the center of the upper shell body and corresponds to the limiting transmission hole 133. The buffer upper shell 11 is thus fitted onto the output shaft 3 through the first shaft hole 113. Multiple second limiting protrusions 115 are formed on the upper shell body and face the buffer lower shell 13. Specifically, the upper shell body includes a disc body 111 and multiple pin holes 114 opened on the disc body 111 (the multiple pin holes 114 extend axially along the disc body 111 but do not penetrate the disc body 111; they are opened on the end face of the disc body 111 facing away from the buffer lower shell 1 and distributed around the first shaft hole 113, so that a pin 21 can be installed in the pin hole 114 to connect the buffer upper shell 11 to the external turbine 2, thereby rotating synchronously under its drive; as Figure 3 (As shown). In this embodiment, the upper shell body also includes a convex ring 112 formed on the circumferential surface of the disk 111.

[0027] In this embodiment, the engagement method between the upper buffer shell 11 and the lower buffer shell 13 can adopt the existing conventional method, but the following method is preferred: the lower buffer shell 13 further includes at least one limiting hole 134 (two in this application, which are symmetrical about the limiting transmission hole 133) formed on the limiting plate 131, and a limiting block 116 that can be embedded in the limiting hole 134 is formed on the disc body 111 or the second limiting protrusion 115 (in this application, there are also two limiting blocks 116, which are symmetrical about the limiting transmission hole 133 and are preferably formed on the second limiting protrusion 115, which can simplify the structure of the lower buffer shell 13). When the upper buffer shell 11 and the lower buffer shell 13 are joined together, the limiting block 116 is engaged in the limiting hole 134 (the limiting hole 134 is slightly larger than the limiting block 116, so that a buffer gap is formed between the limiting hole 134 and the limiting block 116 to reserve buffer space between the upper buffer shell 11 and the lower buffer shell 13), ensuring the buffering effect between the aforementioned first limiting protrusion 135, the second limiting protrusion 115 and the elastic element 12; subsequently, the limiting block 116 makes hard contact with the limiting hole 134, thereby causing the upper buffer shell 11 and the lower buffer shell 13 to rotate synchronously.

[0028] In this embodiment, the elastic element 12 is made of a conventional elastic material (such as rubber). It includes an element body 121, a second shaft hole 122 located at the center of the element body 121 and coaxial with the first shaft hole 113, and a plurality of lugs 123 formed on the circumferential surface of the element body 121 and sandwiched between the first limiting protrusion 135 and the second limiting protrusion 115 (at this time, there are four lugs 123, sandwiched between adjacent first limiting protrusions 135 and second limiting protrusions 115). In addition, the side of the first limiting protrusion 135 is formed with a first concave arc groove 1351, the side of the second limiting protrusion 115 is formed with a second concave arc groove 1151, and the side of the lugs 123 is formed with a convex arc portion 1231 that cooperates with the first concave arc groove 1351 and the second concave arc groove 1151, thereby further ensuring the uniformity of the force applied by the first limiting protrusion 135 and the second limiting protrusion 115 to the lugs 123 and improving the buffering effect.

[0029] The above embodiments are only for illustrating the technical concept and features of this utility model, and are intended to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be construed as limiting the scope of protection of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be included within the scope of protection of this utility model.

Claims

1. A transmission buffer structure, characterized in that it include: The buffer lower shell (13) includes a lower shell body and a limiting transmission hole (133) opened at the center of the lower shell body. The upper buffer shell (11) engages with the lower buffer shell (13) and together they form a receiving space; the lower buffer shell (13) further includes a plurality of first limiting protrusions (135) formed on the shell body and located within the receiving space, and the upper buffer shell (11) has a plurality of second limiting protrusions (115) located within the receiving space and cooperating with the plurality of first limiting protrusions (135). An elastic element (12) is disposed within the receiving space and is engaged between multiple first limiting protrusions (135) and multiple second limiting protrusions (115); The buffer upper shell (11) includes an upper shell body and a first shaft hole (113) opened at the center of the upper shell body and corresponding to the limiting transmission hole (133), and multiple second limiting protrusions (115) are formed on the upper shell body; The upper shell body includes a disc body (111) and a plurality of pin holes (114) formed on the disc body (111). The first pin hole (113) is formed at the center of the disc body (111), and the pin holes (114) are formed on the end face of the disc body (111) opposite to the buffer lower shell (13).

2. The transmission buffer structure according to claim 1, characterized in that: The lower shell body includes a lower shell retaining ring (132) and a limiting plate (131) formed in the lower shell retaining ring (132), and the limiting transmission hole (133) is opened at the center of the limiting plate (131).

3. The transmission buffer structure according to claim 2, characterized in that: The buffer lower shell (13) also includes at least one limiting hole (134) opened on the limiting plate (131), and a limiting block (116) that can be embedded in the limiting hole (134) is formed on the disc body (111) or the second limiting protrusion (115).

4. The transmission buffer structure according to claim 1, characterized in that: The upper shell body also includes a convex ring (112) formed on the circumferential surface of the disc (111).

5. The transmission buffer structure according to claim 1, characterized in that: The elastic element (12) includes an element body (121), a second shaft hole (122) opened at the center of the element body (121) and coaxial with the first shaft hole (113), and a plurality of lugs (123) formed on the circumferential surface of the element body (121) and sandwiched between the first limiting protrusion (135) and the second limiting protrusion (115).

6. The transmission buffer structure according to claim 5, characterized in that: The first limiting protrusion (135) has a first concave arc groove (1351) on its side, the second limiting protrusion (115) has a second concave arc groove (1151) on its side, and the lug block (123) has a convex arc portion (1231) on its side that cooperates with the first concave arc groove (1351) and the second concave arc groove (1151).

Images