Jaw clutch of vehicle and vehicle

Abstract

The embodiment of the utility model provides a jaw clutch of a vehicle and the vehicle. The jaw clutch comprises a transmission gear 1, a driving disc 4 and a piston 7, the driving disc 4 is located between the transmission gear 1 and the piston 7, the end, away from the driving disc 4, of the piston 7 is located in a piston cavity 85 of a transmission box 84, and hydraulic oil is injected into the piston cavity 85. The shaft sleeve 2 is located between the transmission gear 1 and the driving disc 4, and a flange disc 21 is arranged at the end, close to the transmission gear 1, of the shaft sleeve 2; the return spring 3 is arranged on the shaft sleeve 2 and is positioned between the flange plate 21 and the driving plate 4; and the push ring 5 is positioned between the driving disc 4 and the piston 7. The jaw clutch provided by the embodiment of the utility model does not generate heat after working for a long time, is lower in cooling requirement, simple in structure, easy to arrange and beneficial to cost control, and realizes the light weight of the jaw clutch.

Description

Technical Field

[0001] The utility model relates to the field of automobile component production and design, in particular to a tooth-type clutch of a vehicle and the vehicle. Background Art

[0002] A tooth clutch, also known as a dog clutch, is a mechanical clutch that uses a series of teeth or protrusions (or "teeth") to connect and disconnect two rotating parts. This type of clutch is usually used in scenarios that require precise control and reliable transmission of torque, and is widely used in the design of hybrid vehicle powertrains.

[0003] In the tooth clutch design of the related art, the electromagnetic coil is energized by a permanent magnet motor, and the electromagnetic coil is used to control the disengagement and engagement of the tooth clutch, which can reduce the energy consumption of the tooth clutch to a certain extent.

[0004] However, this design has the following defects: 1. It cannot avoid the problem of the motor interfering with the magnetic field of the electromagnetic coil, and the electromagnetic coil requires a large current, which makes it difficult to control the response and size of the output force after power is turned on, and it is difficult to control the engagement of the tooth clutch. 2. It cannot avoid the problem of the electromagnetic coil heating up after long-term operation. 3. The electromagnetic coil is large in size, and the action mechanism requires special materials, which has a high overall cost and large space layout requirements. Utility Model Content

[0005] In view of the above problems, a tooth clutch and a vehicle are proposed to overcome the above problems or at least partially solve the above problems, including:

[0006] A tooth clutch for a vehicle, characterized in that the tooth clutch comprises:

[0007] A transmission gear 1, a drive plate 4 and a piston 7; the drive plate 4 is located between the transmission gear 1 and the piston 7, and one end of the piston 7 away from the drive plate 4 is located in a piston cavity 85 of a transmission case 84, and the piston cavity 85 is filled with hydraulic oil;

[0008] A shaft sleeve 2 is located between the transmission gear 1 and the driving disc 4, and a flange 21 is provided at one end close to the transmission gear 1;

[0009] A return spring 3, disposed on the shaft sleeve 2 and located between the flange 21 and the drive plate 4;

[0010] The push ring 5 is located between the driving plate 4 and the piston 7 .

[0011] Optionally, a first tooth structure 11 is provided at one end of the transmission gear 1 close to the driving disk 4 , and a second tooth structure 41 is provided at one end of the driving disk 4 close to the transmission gear 1 , and the first tooth structure 11 and the second tooth structure 41 are matched.

[0012] Optionally, the outer surface of the shaft sleeve 2 is provided with a third tooth structure 23, the inner surface of the driving disc 4 is provided with a fourth tooth structure 42, and the third tooth structure 23 and the fourth tooth structure 42 are matched.

[0013] Optionally, the inner surface of the sleeve 2 is provided with a first spline 24 , and the first spline 24 is matched with the second spline of the transmission input shaft 81 .

[0014] Optionally, a first boss 51 is provided at one end of the push ring 5 close to the driving disk 4 , and the first boss 51 is matched with the third toothed structure 23 .

[0015] Optionally, the piston 7 is provided with a second boss 72 at one end close to the driving disk 4 , and is provided with a lip seal ring 71 and a third boss 73 at one end away from the driving disk 4 .

[0016] Optionally, the tooth clutch further includes a bearing 6 , and the bearing 6 is located between the push ring 5 and the piston 7 .

[0017] Optionally, a step structure 52 is provided at one end of the push ring 5 close to the piston 7 , and an end surface of the bearing 6 close to one end of the push ring 5 contacts the step structure 52 .

[0018] Optionally, the transmission gear 1 is positioned at an upper axial limit of the transmission input shaft 81 by a first clamping ring 82 , and the sleeve 2 is positioned at an upper axial limit of the transmission input shaft 81 by a second clamping ring 83 .

[0019] A vehicle comprises the dog clutch as described above.

[0020] The utility model has the following advantages: the tooth clutch provided by the embodiment of the utility model comprises: a transmission gear 1, a drive plate 4 and a piston 7, wherein the drive plate 4 is located between the transmission gear 1 and the piston 7, the end of the piston 7 away from the drive plate 4 is located in the piston cavity 85 of the transmission case 84, and the piston cavity 85 is filled with hydraulic oil, a sleeve 2 is located between the transmission gear 1 and the drive plate 4, and a flange 21 is provided at one end close to the transmission gear 1, a return spring 3 is provided on the sleeve 2 and located between the flange 21 and the drive plate 4, and a push ring 5 is located between the drive plate 4 and the piston 7. In actual application, by increasing the hydraulic oil injected into the piston chamber 85, the piston 7 can push the push ring 5, and then push the drive plate 4 to engage with the transmission gear 1, or by reducing the injected hydraulic oil to retract the piston 7. The drive plate 4 returns to its original position under the action of the return spring 3 and separates from the transmission gear 1, thereby realizing the separation and combination of the active component and the driven component of the tooth clutch without the need for an electromagnetic coil, avoiding the problems of magnetic field interference of the electromagnetic coil and heat generation during long-term operation, and having a simple structure and easy layout, which is conducive to cost control and realizes the lightweight of the tooth clutch. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solution of the present invention, the drawings required for use in the description of the present invention will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0022] Figure 1 It is a schematic diagram of components of a tooth clutch provided by one embodiment of the utility model;

[0023] Figure 2 It is a cross-sectional view of a tooth clutch provided by an embodiment of the utility model installed on a transmission input shaft;

[0024] Figure 3 It is another schematic diagram of the components of a tooth clutch provided by one embodiment of the utility model;

[0025] Figure 4 The utility model is a schematic diagram of the assembly of a tooth clutch provided in one embodiment. DETAILED DESCRIPTION

[0026] The following will describe the implementation of the present invention with reference to the accompanying drawings and preferred embodiments. Those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific implementations, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be understood that the preferred embodiments are only for illustrating the present invention, not for limiting the scope of protection of the present invention.

[0027] It should be noted that the illustrations provided in the following embodiments are only schematic illustrations of the basic concept of the present invention, and thus the drawings only show components related to the present invention rather than being drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component may be changed at will, and the component layout may also be more complicated.

[0028] Reference Figure 1 , shows a tooth clutch of a vehicle provided by an embodiment of the utility model, the tooth clutch comprising:

[0029] A transmission gear 1, a drive plate 4 and a piston 7; the drive plate 4 is located between the transmission gear 1 and the piston 7, and one end of the piston 7 away from the drive plate 4 is located in a piston cavity 85 of a transmission case 84, and the piston cavity 85 is filled with hydraulic oil;

[0030] In this embodiment, if Figure 2 As shown, the tooth clutch can be mounted and fixed on the transmission input shaft 81, and a part of the clutch can be fixedly matched with the shaft by a spline or other structure to transmit torque, and the other part is matched with the shaft by an empty sleeve. The transmission case 84 has a piston cavity 85, and the end of the piston 7 away from the drive plate 4 is located in the piston cavity 85, and the piston 7 can be in a ring shape. Hydraulic oil can be injected into the piston cavity 85 through a pre-set oil circuit.

[0031] In some embodiments of the present invention, a first tooth structure 11 is provided at one end of the transmission gear 1 close to the drive disk 4, and a second tooth structure 41 is provided at one end of the drive disk 4 close to the transmission gear 1, and the first tooth structure 11 and the second tooth structure 41 are matched.

[0032] like Figure 1 As shown, the first tooth structure 11 and the second tooth structure 41 are matched and mesh with each other when the transmission gear 1 and the driving disc 4 are combined, thereby achieving torque transmission.

[0033] In a specific implementation, the first tooth structure 11 and the second tooth structure 41 can be dog tooth structures, and the first tooth structure 11 and the second tooth structure 41 can achieve structural self-locking when they are meshed with each other. In some embodiments of the utility model, the piston 7 is provided with a second boss 72 at one end close to the drive disk 4, and a lip seal ring 71 and a third boss 73 at one end away from the drive disk 4.

[0034] In the specific implementation, Figure 1 As shown, a second boss 72 is provided at one end of the piston 7 close to the drive disk 4. The second boss 72 may be annular and is used to contact with a push ring or a bearing. A lip seal 71 is provided at the other end. The lip seal 71 has an interference fit with the inner and outer diameters of the piston cavity on the transmission case. At the same time, at least two circular third bosses 73 are respectively provided at this end and contact with the piston cavity 85 for axial limitation, so that the gap between the first tooth structure 11 and the second tooth structure 41 is not less than 0.5 mm.

[0035] A shaft sleeve 2 is located between the transmission gear 1 and the driving disc 4, and a flange 21 is provided at one end close to the transmission gear 1;

[0036] In the specific implementation, Figure 1 As shown, a flange 21 with a larger diameter can be provided to support the return spring 3. The sleeve 2 can also be provided with a cylindrical surface 22 for supporting and guiding the movement of the push ring 5.

[0037] In practical applications, when the clutch is mounted and fixed to the transmission input shaft 81, as shown in FIG. Figure 2 As shown, the shaft sleeve 2 and the shaft sleeve 1 may be separated by a step structure of the transmission input shaft 81 .

[0038] In some embodiments of the present invention, the outer surface of the sleeve 2 is provided with a third tooth structure 23, the inner surface of the drive disc 4 is provided with a fourth tooth structure 42, and the third tooth structure 23 and the fourth tooth structure 42 are matched.

[0039] In the specific implementation, Figure 1 As shown, the third tooth-like structure 23 and the fourth tooth-like structure 42 can be set as petal teeth, and the number of petal teeth of the two is equal. The movement of the driving disk 4 can be supported and guided by the third tooth-like structure 23.

[0040] In some embodiments of the present invention, the inner surface of the sleeve 2 is provided with a first spline 24 , and the first spline 24 is matched with the second spline of the transmission input shaft 81 .

[0041] In a specific implementation, the first spline 24 can be arranged as follows: Figure 1As shown, the first spline 24 is matched with the second spline of the transmission input shaft 81 , and the power is transmitted from the transmission input shaft to the sleeve through the second spline, and the sleeve then transmits the power to the drive disc 4 through the third tooth structure 23 .

[0042] In some embodiments of the present invention, the transmission gear 1 is positioned at the upper axial limit of the transmission input shaft 81 by a first clamping ring 82 , and the sleeve 2 is positioned at the upper axial limit of the transmission input shaft 81 by a second clamping ring 83 .

[0043] In the specific implementation, Figure 2 As shown, the transmission gear 1 is positioned at the upper axial limit of the transmission input shaft 81 by the first clamping ring 82 , and the sleeve 2 is positioned at the upper axial limit of the transmission input shaft 81 by the second clamping ring 83 .

[0044] A return spring 3, disposed on the shaft sleeve 2 and located between the flange 21 and the drive plate 4;

[0045] In the specific implementation, Figure 1 As shown, the return spring 3 can be supported by the flange 21, and when the clutch is assembled, the drive plate 4 compresses the return spring to form a pre-pressure, and the pre-pressure value is preferably at least greater than 30N.

[0046] The push ring 5 is located between the driving plate 4 and the piston 7 .

[0047] like Figure 1 As shown, the push ring 5 is arranged between the driving disc 4 and the piston 7, and is pushed by the piston 7 through hydraulic control, thereby pushing the driving disc 4 and the transmission gear 1 to be combined.

[0048] In some embodiments of the present invention, a first boss 51 is disposed at one end of the push ring 5 close to the driving disk 4 , and the first boss 51 is matched with the third tooth structure 23 .

[0049] In the specific implementation, Figure 1 As shown, a first boss 51 is provided at one end of the push ring 5 close to the drive disk 4 . The first boss 51 may be in a petal shape. The first boss 51 is matched with the third toothed structure 23 , and the end face of the first boss 51 may contact the end face of the fourth toothed structure 42 .

[0050] In some embodiments of the present invention, the tooth clutch further includes a bearing 6 , and the bearing 6 is located between the push ring 5 and the piston 7 .

[0051] In the specific implementation, Figure 1 As shown, the bearing 6 is arranged between the push ring 5 and the piston 7, and is pushed by the piston 7, thereby pushing the push ring forward.

[0052] In some embodiments of the present invention, a step structure 52 is provided at one end of the push ring 5 close to the piston 7 , and an end surface of the bearing 6 close to one end of the push ring 5 is in contact with the step structure 52 .

[0053] In the specific implementation, Figure 1 As shown, a step structure 52 is provided at one end of the push ring 5 close to the piston 7 , and an end surface of the bearing 6 close to the push ring 5 contacts the step structure 52 , and the step structure 52 forms a supporting force on the bearing 6 .

[0054] In some examples of the present invention, a working process of a tooth clutch is also provided. Figure 3 As shown, the components of the tooth clutch include a transmission gear 1, a sleeve 2, a return spring 3, a drive plate 4, a push ring 5, a bearing 6, and a piston 7. The tooth clutch after the components are assembled is as shown in FIG. Figure 4 shown.

[0055] Furthermore, if Figure 2 As shown, the assembled tooth clutch is installed and fixed on the transmission input shaft 81, the transmission gear 1 is axially limited by the first clamp ring 82, and the sleeve 2 is axially limited by the second clamp ring 83. The end of the piston 7 away from the drive plate 4 is located in the piston cavity 85. After the hydraulic oil is injected into the piston cavity 85 to build up pressure, the piston 7 is pushed to move and control the clutch engagement. After the hydraulic oil is depressurized, the return spring 3 is reset to push the clutch to disengage.

[0056] Specifically, after the hydraulic oil enters the piston chamber 85 through the transmission case 84, it pushes the piston 7 to move, the piston 7 pushes the bearing 6 to move, the bearing 6 pushes the push ring 5 to move, and the push ring 5 pushes the drive plate 4 to continue to compress the return spring 3 and move until the second tooth structure 41 of the drive plate 4 is engaged with the first tooth structure 11 of the transmission gear 1, completing the engagement of the tooth clutch. At this time, the torque transmission route is that the transmission input shaft 81 is transmitted to the sleeve 2 through the spline, the sleeve 2 is engaged with the fourth tooth structure 42 of the drive plate 4 through the third tooth structure 23 to transmit the driving force to the drive plate 4, the drive plate 4 is transmitted to the transmission gear 1 through the engagement of the second tooth structure 41 with the first tooth structure of the transmission gear 1, and the transmission gear 1 then transmits the driving force to the transmission through the gear.

[0057] Furthermore, after the hydraulic oil is depressurized, the drive plate 4 pushes the push ring 5 to move under the elastic force of the return spring 3, the push ring 5 pushes the bearing 6 to move, and the bearing 6 pushes the piston 7 to move until the third boss 73 on the piston 7 contacts the piston cavity 85 on the transmission case 84, and the second tooth structure 41 of the drive plate 4 disengages from the first tooth structure 11 of the transmission gear 1, completing the disconnection of the tooth clutch.

[0058] The tooth clutch provided in this embodiment has the following advantages: based on hydraulic control, electromagnetic interference between components is effectively avoided, which is more conducive to the operation and control of each component; the hydraulic pressure and flow can be accurately controlled according to needs, and the response speed and softness of the clutch engagement can be taken into account, thereby improving the comfort of the clutch engagement; there is no need to control the current or controller, and the clutch engagement control can be smoothly performed using the lubricating oil in the transmission, which makes the control simpler; there are no special requirements for materials, and the cost is more advantageous; there is no heat problem during long-term operation, and the cooling requirements are lower, which is more conducive to the lubrication oil circuit design and oil volume control of the hybrid transmission; the structure is compact and easy to arrange, which is conducive to improving the integration and lightweight of the hybrid transmission.

[0059] Some embodiments of the present invention further provide a vehicle, comprising the tooth clutch as described above.

[0060] The utility model has the following advantages: the tooth clutch provided by the embodiment of the utility model comprises: a transmission gear 1, a drive plate 4 and a piston 7, wherein the drive plate 4 is located between the transmission gear 1 and the piston 7, the end of the piston 7 away from the drive plate 4 is located in the piston cavity 85 of the transmission case 84, and the piston cavity 85 is filled with hydraulic oil, a sleeve 2 is located between the transmission gear 1 and the drive plate 4, and a flange 21 is provided at one end close to the transmission gear 1, a return spring 3 is provided on the sleeve 2 and located between the flange 21 and the drive plate 4, and a push ring 5 is located between the drive plate 4 and the piston 7. In actual application, by increasing the hydraulic oil injected into the piston chamber 85, the piston 7 can push the push ring 5, and then push the drive plate 4 to engage with the transmission gear 1, or by reducing the injected hydraulic oil to retract the piston 7. The drive plate 4 returns to its original position under the action of the return spring 3 and separates from the transmission gear 1, thereby realizing the separation and combination of the active component and the driven component of the tooth clutch without the need for an electromagnetic coil, avoiding the problems of magnetic field interference of the electromagnetic coil and heat generation during long-term operation, and having a simple structure and easy layout, which is conducive to cost control and realizes the lightweight of the tooth clutch.

[0061] It should be noted that, in this article, 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", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0062] It should be noted that when a component is referred to as being "fixed to" another component, it may be directly on the other component or there may also be a component centered. When a component is considered to be "connected to" another component, it may be directly connected to the other component or there may also be a component centered. When a component is considered to be "set on" another component, it may be directly set on the other component or there may also be a component centered. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0063] The above embodiments are only preferred embodiments for fully illustrating the present invention, and the protection scope of the present invention is not limited thereto. Any equivalent substitution or modification made by a person skilled in the art based on the present invention is within the protection scope of the present invention.

Claims

1. A tooth clutch for a vehicle, characterized in that: The dog clutch comprises: A transmission gear (1), a drive plate (4) and a piston (7); the drive plate (4) is located between the transmission gear (1) and the piston (7); an end of the piston (7) away from the drive plate (4) is located in a piston cavity (85) of a transmission case (84), and the piston cavity (85) is filled with hydraulic oil; A shaft sleeve (2) is located between the transmission gear (1) and the driving plate (4), and a flange (21) is provided at one end close to the transmission gear (1); A return spring (3) is arranged on the shaft sleeve (2) and is located between the flange (21) and the drive plate (4); A push ring (5) is located between the drive plate (4) and the piston (7).

2. The dog clutch according to claim 1, characterized in that: A first tooth structure (11) is provided at one end of the transmission gear (1) close to the drive disc (4), and a second tooth structure (41) is provided at one end of the drive disc (4) close to the transmission gear (1); the first tooth structure (11) and the second tooth structure (41) are matched.

3. The dog clutch according to claim 1, characterized in that: The outer surface of the shaft sleeve (2) is provided with a third tooth structure (23), and the inner surface of the driving disc (4) is provided with a fourth tooth structure (42), and the third tooth structure (23) and the fourth tooth structure (42) are matched.

4. The dog clutch according to claim 1, characterized in that: The inner surface of the shaft sleeve (2) is provided with a first spline (24), and the first spline (24) is matched with a second spline of the transmission input shaft (81).

5. The dog clutch according to claim 3, characterized in that: A first boss (51) is provided at one end of the push ring (5) close to the drive disk (4), and the first boss (51) is matched with the third toothed structure (23).

6. The dog clutch according to claim 1, characterized in that: The piston (7) is provided with a second boss (72) at one end close to the driving disk (4), and a lip seal ring (71) and a third boss (73) at one end away from the driving disk (4).

7. The dog clutch according to claim 1, characterized in that: The tooth clutch further comprises a bearing (6), wherein the bearing (6) is located between the push ring (5) and the piston (7).

8. The dog clutch according to claim 7, characterized in that: A step structure (52) is provided at one end of the push ring (5) close to the piston (7), and an end surface of the bearing (6) close to one end of the push ring (5) is in contact with the step structure (52).

9. The dog clutch according to claim 1, characterized in that: The transmission gear (1) is positioned at an axial upper limit of the transmission input shaft (81) via a first clamping ring (82), and the shaft sleeve (2) is positioned at an axial upper limit of the transmission input shaft (81) via a second clamping ring (83).

10. A vehicle, characterized in that: The vehicle comprises a dog clutch as claimed in any one of claims 1-9.

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