Hybrid shifting fork of automobile transmission

Abstract

The utility model relates to an automobile transmission hybrid power shifting fork which comprises a shifting fork body, a shifting fork shaft sleeve is fixedly installed on the shifting fork body, and an installation cylinder communicated with the shifting fork shaft sleeve is fixedly connected to the shifting fork shaft sleeve. A shifting fork shaft is inserted into the shifting fork shaft sleeve, and the shifting fork body can move in the axial direction of the shifting fork shaft; a corrugated groove is formed in the shifting fork shaft in the axial direction of the shifting fork shaft, a shifting fork self-locking pin is installed in the installation cylinder, and one end of the shifting fork self-locking pin is matched with the corrugated groove. The shifting fork has the advantages that the structure is simple, the design is reasonable, a single shifting fork piece is machined and formed at a time through CNC, and the machining precision is high; meanwhile, the transmission motor is connected with the screw rod, so that a hydraulic or mechanical transmission source is adjusted to be electrically driven, and electric control is realized; the fork feet are welded through wear-resistant plastic ultrasonic waves, noise is reduced, and the cost is lower than that of a traditional plastic coating process.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of automobile gear shifting fork, specifically relates to a kind of automobile transmission hybrid gear shifting fork. BACKGROUND

[0002] Gear shifting fork is the main gear shifting component in automobile transmission, the both ends of fork shaft are connected with the both ends of steel sleeve of transmission, fork mouth is connected with gear sleeve of transmission, meanwhile, fork hole is connected with fork shaft, fork magnet subassembly is connected with signal detection device of transmission.In working condition, transmission motor pushes fork to move along axial direction through screw device, simultaneously, fork mouth pushes gear sleeve to move along axial direction, after the position signal of magnet is detected by transmission detection device during movement, gear shifting stroke position is determined, and finally the gear shifting function of gear shifting fork is realized.

[0003] However, the gear shifting position of current gear shifting fork is not accurate. CONTENT OF UTILITY MODEL

[0004] The utility model provides a kind of automobile transmission hybrid gear shifting fork, to solve the problems in prior art.

[0005] The technical scheme for solving the above technical problems of the utility model is as follows:

[0006] A kind of automobile transmission hybrid gear shifting fork, including fork main body, the fork main body is fixedly installed with fork shaft sleeve, the fork shaft sleeve is fixedly connected with installation cylinder communicated with it;Fork shaft is inserted in the fork shaft sleeve, and the fork main body can move along the axial direction of the fork shaft;The corrugated groove is provided on the fork shaft along its axial direction, the installation cylinder is installed with fork self-locking pin, and one end of the fork self-locking pin is matched with the corrugated groove.

[0007] The utility model has the advantages that: in use, the corrugated groove on the fork shaft is matched with the fork self-locking pin, to prevent the fork from moving during movement, so that the gear shifting position is more accurate.

[0008] The utility model has simple structure, reasonable design, and the fork single piece is formed by CNC one-time machining, with high machining precision.

[0009] On the basis of the above technical scheme, the utility model can also be improved as follows.

[0010] Further, one end of the fork main body is provided with a through hole, a screw nut is fixedly installed in the through hole, and the screw nut is used for being threadedly sleeved on the lead screw in the transmission.

[0011] The beneficial effects of the above further scheme are that, in use, the lead screw is connected with the transmission motor, so that the transmission is driven by electricity instead of hydraulic or mechanical transmission source, and electrical control is realized.

[0012] Further, the screw nut is fixed in the through hole by a fixing screw.

[0013] The beneficial effect of the above further scheme is simple structure, reasonable design and convenient assembly.

[0014] Further, a magnet subassembly is fixedly installed on one end of the shift fork body.

[0015] The beneficial effect of the above further scheme is simple structure, reasonable design, and the magnet subassembly cooperates with the magnetic induction component in the gearbox to enable the system to sense the position information of the shift fork.

[0016] Further, the magnet subassembly is fixed on the shift fork body by a fastening screw.

[0017] The beneficial effect of the above further scheme is simple structure, reasonable design, and the magnet subassembly is assembled by a fastening screw, which is convenient to assemble.

[0018] Further, the magnet subassembly is located between the screw nut and the shift fork shaft sleeve.

[0019] The beneficial effect of the above further scheme is simple structure and reasonable distribution of the magnet subassembly, which is convenient to detect.

[0020] Further, the other end of the shift fork body is in an arc structure.

[0021] The beneficial effect of the above further scheme is simple structure of the shift fork body, reasonable shape design, and convenient gear shifting operation.

[0022] Further, fork leg inserts are fixedly installed on both sides of the other end of the shift fork body.

[0023] The beneficial effect of the above further scheme is that the fork leg inserts are ultrasonically welded with wear-resistant plastic, which reduces noise and is lower in cost than traditional plastic coating processes.

[0024] Further, a middle point insert is fixedly installed on the middle part of the other end of the shift fork body.

[0025] The beneficial effect of the above further scheme is that the middle point insert is ultrasonically welded with wear-resistant plastic, which reduces noise and is lower in cost than traditional plastic coating processes.

[0026] Further, a shift fork bushing is installed between the shift fork shaft sleeve and the shift fork shaft.

[0027] The beneficial effect of the above further scheme is simple structure and reasonable design, and the above shift fork bushing is a self-lubricating sleeve, which has the characteristics of noise reduction and wear resistance. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 Figure 1 is a perspective view of the utility model;

[0029] Figure 2 Figure 2 is another perspective view of the utility model;

[0030] Figure 3 Figure 3 is a front view of the utility model;

[0031] Figure 4 Figure 4 is a side view of the utility model;

[0032] Figure 5 Figure 5 is a top view of the utility model.

[0033] In the drawings, the components represented by each reference numeral are listed as follows:

[0034] 1, fork insert; 2, shift fork main body; 3, screw nut; 4, magnet subassembly; 5, fastening screw; 6, shift fork shaft; 7, shift fork self-locking pin; 8, shift fork bushing; 9, middle point insert; 10, shift fork shaft sleeve. DETAILED DESCRIPTION

[0035] It should be noted that the embodiments in the utility model and the features in the embodiments can be combined with each other without conflict.

[0036] In the description of the utility model, it should be understood that the orientation or position relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model. In addition, the terms "first", "second" and the like are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features limited by "first", "second" and the like can explicitly or implicitly include one or more of the features. In the description of the utility model, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0037] In the description of the utility model, it is necessary to explain that, unless there are explicit provisions and limitations, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixed connection, or it can be detachable connection, or it can be integrally connected, it can be mechanical connection, or it can be electrical connection, it can be directly connected, or it can be indirectly connected through an intermediate medium, it can be the communication inside two elements, for ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to specific circumstances.

[0038] The utility model will be described in detail below with reference to the drawings and in combination with embodiments.

[0039] Embodiment 1

[0040] As Figures 1 to 5 The utility model provides a kind of automobile transmission hybrid gear shifting fork, including fork body 2, the fork body 2 is fixedly installed with fork shaft sleeve 10, the fork shaft sleeve 10 is fixedly connected with the installation cylinder being communicated therewith;The fork shaft sleeve 10 is inserted with fork shaft 6, the fork body 2 can be moved along the axial direction of the fork shaft 6;The fork shaft 6 is equipped with corrugated groove along its axial direction, the installation cylinder is installed with fork self-locking pin 7, one end of the fork self-locking pin 7 is matched with the corrugated groove.

[0041] In use, the fork self-locking pin 7 is matched with the corrugated groove on the fork shaft 6, to prevent the fork from moving during movement, so that the position of gear shifting is more accurate.

[0042] Preferably, in the embodiment, the above-mentioned fork shaft sleeve 10 is preferably cylindrical structure, which is integrally formed with the fork body 2.

[0043] In addition, the above-mentioned fork self-locking pin 7 uses steel ball self-locking pin in prior art, and its specific structure and principle will not be described here.

[0044] The utility model has simple structure, reasonable design, and the fork single piece is formed by CNC (numerical control machine tool) one-time machining, with high machining precision.

[0045] Embodiment 2

[0046] On the basis of embodiment 1, in the embodiment, one end of the fork body 2 is provided with a through hole, a lead screw nut 3 is fixedly installed in the through hole, and the lead screw nut 3 is used for being threadedly sleeved on the lead screw in the gearbox.

[0047] In use, the transmission motor is connected with the lead screw, so that the hydraulic or mechanical transmission source is adjusted to be driven by electricity, and electrical control is realized.

[0048] Embodiment 3

[0049] In this embodiment, the screw nut 3 is fixed in the through hole by a fixing screw.

[0050] This scheme has simple structure, reasonable design and convenient assembly.

[0051] Embodiment 4

[0052] In this embodiment, one end of the shift fork body 2 is fixedly provided with a magnet subassembly 4.

[0053] This scheme has simple structure, reasonable design, and the magnet subassembly 4 cooperates with the magnetic induction component in the gearbox to enable the system to sense the position information of the shift fork.

[0054] It should be noted that the magnet subassembly 4 is a prior art, and its specific structure and principle will not be described here.

[0055] Embodiment 5

[0056] In this embodiment, the magnet subassembly 4 is fixed on the shift fork body 2 by a fastening screw 5.

[0057] This scheme has simple structure, reasonable design, and the magnet subassembly 4 is assembled by the fastening screw 5, which is convenient to assemble.

[0058] Embodiment 6

[0059] In this embodiment, the magnet subassembly 4 is located between the screw nut 3 and the shift fork shaft sleeve 10.

[0060] This scheme has simple structure, and the magnet subassembly 4 is reasonably distributed, which is convenient to detect.

[0061] Embodiment 7

[0062] In this embodiment, the other end of the shift fork body 2 has an arc-shaped structure.

[0063] The shift fork body 2 has simple structure and reasonable shape design, which is convenient for gear shifting operation.

[0064] Embodiment 8

[0065] In this embodiment, the other end of the shift fork body 2 is fixedly provided with a fork foot insert 1 on both sides.

[0066] The fork foot insert 1 is made of wear-resistant plastic and is ultrasonically welded, which reduces noise and is lower in cost than the traditional plastic packaging process.

[0067] Embodiment 9

[0068] In any one of Embodiment 7 to Embodiment 8, the middle part of the other end of the shift fork body 2 is fixedly installed with an intermediate point insert 9.

[0069] The intermediate point insert 9 is ultrasonically welded with wear-resistant plastic, is noise-reducing, and has a lower cost than a traditional plastic coating process.

[0070] Embodiment 10

[0071] In any one of Embodiment 7 to Embodiment 8, the middle part of the other end of the shift fork body 2 is fixedly installed with an intermediate point insert 9.

[0072] The scheme has simple structure and reasonable design, and the shift fork bushing 8 is a self-lubricating sleeve, which has the characteristics of noise reduction and wear resistance.

[0073] The working principle of the utility model is as follows:

[0074] In use, the transmission motor is connected with the screw rod, so that the shift fork is driven by electricity instead of a hydraulic or mechanical transmission source, and electrical control is realized.

[0075] In this process, the shift fork self-locking pin 7 cooperates with the corrugated groove on the shift fork shaft 6 to prevent the shift fork from moving during movement, so that the position of gear shifting is more accurate.

[0076] The shift fork provided by the utility model has the following characteristics:

[0077] 1. High precision: the shift fork body is processed by one-time clamping of CNC, so that repeated clamping position error is avoided.

[0078] 2. Screw rod structure transmission: the transmission motor is connected with the screw rod, so that the shift fork is driven by electricity instead of a hydraulic or mechanical transmission source, and electrical control is realized.

[0079] 3. The fork foot is ultrasonically welded with wear-resistant plastic, is noise-reducing, and has a lower cost than a traditional plastic coating process.

[0080] The shift fork provided by the utility model has the following beneficial effects:

[0081] 1. The shift fork is processed by one-time molding of CNC, so that the machining precision is high.

[0082] 2. The motor screw rod transmission mode is adopted, so that the electric driving mode is consistent with the green new energy promoted by the country.

[0083] 3. The bushing is assembled at both ends of the shift fork hole, and the coating on the inner surface of the bushing lubricates the cooperation with the shaft without noise.

[0084] 4. The fork foot is assembled with engineering plastic with excellent wear resistance, so that the wear resistance is good and there is no noise.

[0085] It should be noted that each electronic component involved in the present application adopts the prior art, and each component is electrically connected with the controller, and the control circuit between the controller and each component is the prior art.

[0086] It is apparent for those skilled in the art that the present application is not limited to the details of the above exemplary embodiments, but can be implemented in other concrete forms without departing from the spirit or essential characteristics of the present application. Therefore, the embodiments should be considered in all aspects as illustrative and not restrictive, and the scope of the present application is defined by the appended claims rather than the above description, and therefore all changes falling within the meaning and range of equivalent elements of the claims are intended to be embraced in the present application. Any reference signs in the claims should not be considered as limiting the claims to which they relate.

[0087] In addition, it should be understood that although the present application is described in terms of embodiments, not every embodiment contains only one independent technical solution, and the description of the specification is only for the sake of clarity, and those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can be properly combined to form other embodiments that those skilled in the art can understand.

[0088] The above is only the preferred embodiment of the present application, and is not intended to limit the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. An automotive transmission hybrid shift fork, characterized by: The fork body (2) is provided with a fork shaft sleeve (10) fixedly installed thereon, and the fork shaft sleeve (10) is provided with an installation cylinder communicated with the fork shaft sleeve (10); the fork shaft (6) is inserted into the fork shaft sleeve (10), and the fork body (2) can move along the axial direction of the fork shaft (6); the fork shaft (6) is provided with a corrugated groove along the axial direction of the fork shaft (6), and the installation cylinder is provided with a fork self-locking pin (7); one end of the fork self-locking pin (7) is matched with the corrugated groove.

2. The automotive transmission hybrid shift fork of claim 1, wherein: One end of the fork body (2) is provided with a through hole, and a screw nut (3) is fixedly installed in the through hole; the screw nut (3) is used for being threadedly sleeved on a screw rod in a gearbox.

3. The automotive transmission hybrid shift fork of claim 2, wherein: The screw nut (3) is fixed in the through hole by a fixing screw.

4. The automotive transmission hybrid shift fork of claim 2, wherein: One end of the fork body (2) is provided with a magnet subassembly (4).

5. The automotive transmission hybrid shift fork of claim 4, wherein: The magnet subassembly (4) is fixed on the fork body (2) by a fastening screw (5).

6. The automotive transmission hybrid shift fork of claim 4, wherein: The magnet subassembly (4) is located between the screw nut (3) and the fork shaft sleeve (10).

7. The automotive transmission hybrid shift fork of any one of claims 1-6, wherein: The other end of the fork body (2) is in an arc-shaped structure.

8. The automotive transmission hybrid shift fork of claim 7, wherein: The fork body (2) is provided with a fork leg insert block (1) fixedly installed on each side of the other end of the fork body (2).

9. The automotive transmission hybrid shift fork of claim 7, wherein: The fork body (2) is provided with an intermediate point insert block (9) fixedly installed on the middle part of the other end of the fork body (2).

10. The automotive transmission hybrid shift fork of any one of claims 1-6, wherein: The fork shaft sleeve (10) and the fork shaft (6) are provided with a fork bushing (8).

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