Parking lock device with spring guide means

Abstract

The invention relates to a parking lock device (10) comprising: a pivotable pawl (12) which can be pivoted between a locking position (20), in which the pawl (12) engages in a rotating part in a form-locked manner, and a release position, in which the pawl (12) is disconnected from the rotating part; a slide (30) which can be moved in an axial direction (28) relative to the bearing element (26) such that the axial position is changed and which deflects the pawl (12) into the locking position (20) in a first axial position (32); a spring element (46) coupled at one end to the bearing element (26) and at the other end to the slide (30) and applying a spring force to the slide (30) when the slide (30) is in at least one of the axial positions (32) of the slide; a spring guide means (60) which positions the spring element (46) on the slide (30) with respect to at least one direction (62) perpendicular to the axial direction (28), an axial length (66) of the spring guide means (60) extending in the axial direction (28) from the slide (30) towards the bearing element (26) being smaller than a minimum spring length (70) of the spring element (46) in the axial direction (28).

Description

Technical Field

[0001] The present invention relates to a parking lock device according to the preamble of claim 1. Background Technology

[0002] DE 10 2018 130 765 A1 describes a parking lock device with a pawl, the pawl being actuated via a slider and pivotally mounted on a bolt about a rotation axis. A spring element is positioned on the slider via a guide rod, wherein the slider is operatively connected to the pawl and axially movable along the longitudinal direction of the guide rod to actuate the pawl. A support element is designed to guide the guide rod and house the spring element. Another parking lock device with a slider is known from WO 2020 / 103 970 A1. Summary of the Invention

[0003] The purpose of this invention is to reduce the mass inertia of the sliding member and the components connected to it that are capable of moving in the axial direction.

[0004] At least one of these objectives is achieved by a parking lock device having the features of claim 1. Therefore, the parking lock device can be implemented in a more reliable and robust manner. Material stress at the interface between the spring guide and the slider can be reduced. The mass inertia of the component that can move axially with the slider can be reduced. The commonly used guide rod can be eliminated.

[0005] The parking lock device can be installed in the vehicle. The vehicle can be a motor vehicle or an electric vehicle. The parking lock device can be connected to the transmission. The parking lock device can be installed in the transmission or on the transmission.

[0006] A parking lock restricts or prevents a vehicle from moving from its parking position when it is in the locked position. For example, it can prevent a vehicle located on a slope from moving. The rotating component can rotate freely in the released position via the parking lock.

[0007] The rotating component can be a locking ring or a parking lock wheel. The rotating component can be connected to the transmission shaft of the transmission. The rotating component can have locking teeth, specifically arranged on its outer periphery. In the locked position, the pawl can engage in a form-locking manner with the locking teeth. The pawl can have pawl teeth that engage in a form-locking manner with the locking teeth in the locked position.

[0008] The sliding element can be moved axially by an actuator element. The actuator element can change the axial position of the sliding element. The actuator element can be an electric motor, particularly a servo motor. The actuator element can be connected to the electric motor as a drive element. The actuator element and the spring element can be arranged coaxially. The actuator element can be arranged at an angle relative to the spring element, for example, at an angle of 2° to 6°, particularly 4° or 5°.

[0009] The slider can allow and / or adjust the release position of the pawl in a second axial position different from the first axial position, particularly by actuating the pawl to allow and / or adjust the release position of the pawl.

[0010] The spring element can be connected to the spring guide device by means of a press fit.

[0011] The minimum spring length can be achieved when the spring element is compressed to its maximum extent.

[0012] The support element can be securely connected to the parking lock housing, particularly to the reinforcing plate and / or side plate. The support element can be made of plastic. The parking lock device can be securely connected, particularly threaded, to the transmission housing via the parking lock housing. The parking lock device can be supported in the locked position on the transmission housing via the supporting force of the pawl by the parking lock housing.

[0013] The spring guide can be designed as a hole in the slider, such as a hole in the housing wall, which receives the spring element. The slider housing may include the housing wall.

[0014] Spring-guided devices can be non-contact at all axial positions of the slider relative to the support element.

[0015] A spring guide device positions a spring element on a slider by fixing the spring element to the slider in a gapped or gapless manner. When positioned with a gap, limited movement of the spring element relative to the slider in the relevant direction is possible. Preferably, the spring guide device positions the spring element on the slider in at least one additional direction, which is perpendicular to the axial direction and also perpendicular to the axial direction. The spring guide device preferably positions the spring element on the slider in all directions perpendicular to the axial direction. The spring guide device can also fix the spring element to the slider in the axial direction.

[0016] The spring element can be connected to the spring guide device by form-locking, force-locking, and / or friction. The spring element can be pressed or snapped onto the spring guide device.

[0017] In a preferred embodiment of the invention, it is advantageous that the axial length of the spring guide device is less than the minimum axial distance between the slider and the support element. This minimum distance can be located at a second axial position. The minimum distance can be the distance between a component of the slider that receives or has the spring guide device, such as a transverse plate. Alternatively, the minimum distance can be the distance between the section of the support element that receives the spring element and the slider, particularly the aforementioned component of the slider.

[0018] In an advantageous embodiment of the invention, the spring guide device and the spring element are provided to overlap at least partially in the axial direction. The axial length may be less than 30% of the spring length, and particularly less than 20% of the spring length.

[0019] A preferred embodiment of the invention is advantageous in which the spring element is designed as a helical spring having multiple coils. The helical spring may have more than 5, particularly more than 10, and preferably more than 15 coils. The number of coils can be selected according to the desired spring stiffness, wire diameter, and / or spring diameter.

[0020] In a preferred embodiment of the invention, a spring guide is provided, arranged inside the inner spring diameter of the spring element. The width of the spring guide may be greater than or equal to the inner spring diameter. This allows the spring element to be securely rested against the spring guide, and in particular, pressed against the spring guide.

[0021] In a preferred embodiment of the invention, a spring guide device is provided, arranged outside the outer spring diameter of the spring element. The spring guide device may enclose at least one spring coil. The spring guide device may be elliptical or circular.

[0022] A preferred embodiment of the invention is advantageous in which the support element has a receiving portion, the outer spring diameter of the spring element being supported on the inner circumference of the receiving portion, and positioned on the support element relative to at least one direction perpendicular to the axial direction. The receiving portion may be designed as a hole in the support element.

[0023] Alternatively, the support element may have a protrusion on which the spring element is positioned.

[0024] In a preferred embodiment of the invention, the receiving portion accommodates at least half of the total spring coil of the spring element. This prevents the spring element from buckling in a direction deviating from the axial direction.

[0025] In a specific embodiment of the invention, it is advantageous that the spring guide is a component separate from and attached to the slider. The spring guide can be designed as a pin. The spring guide can be connected to the slider by shape locking, friction, and / or material bonding.

[0026] In one specific embodiment of the invention, it is advantageous that the spring guide device and the slider are designed as a single piece. The spring guide device can be designed as a single piece with the slider housing, and preferably as a single piece with the housing wall of the slider housing. The spring guide device can be a through hole, particularly a through hole through the housing wall.

[0027] Other advantages and advantageous embodiments of the invention will become apparent from the description of the figures and drawings. Attached Figure Description

[0028] The invention will now be described in detail with reference to the accompanying drawings. In particular, in the drawings:

[0029] Figure 1 The image shows a cross-section of a parking locking device according to a specific embodiment of the present invention.

[0030] Figure 2 It shows Figure 1 The sliding housing of the sliding component of the parking lock device shown.

[0031] Figure 3 The image shows a cross-section of a parking locking device according to another specific embodiment of the present invention.

[0032] Figure 4 It shows Figure 3 The sliding housing of the sliding component of the parking lock device shown.

[0033] Figure 5 It shows Figure 4 The cross-section of the housing wall of the sliding component housing is shown.

[0034] Figure 6 It shows Figure 4 The sliding housing shown has a partially visible spring element.

[0035] Figure 7 The image shows a three-dimensional view of a parking locking device according to another specific embodiment of the present invention. Detailed Implementation

[0036] Figure 1 A cross-section of a parking lock device according to a specific embodiment of the present invention is shown. The parking lock device 10 includes a pawl 12, which is pivotable about a rotation axis 14. The pawl 12 is pivotable on a reinforcing plate 18 via a bolt 16. In the locked position 20 shown here, the pawl teeth 24 of the pawl 12 are engaged in a form-locked manner in a rotating component (not shown here), and the rotational movement of the rotating component, such as the parking lock wheel, is prevented.

[0037] In the released position, pawl 12 is disconnected from the rotating component. Pawl 12 is preloaded by a return spring (not shown) to present the released position.

[0038] The parking lock device 10 also includes a slider 30, which is movable relative to the support element 26 in an axial direction 28. The slider, in a first axial position 32 shown here, deflects the pawl 12 to a locked position 20, and in a second axial position, allows the pawl 12 to be in a released position, wherein the pawl 12 rotates about the bolt 16 and deflects upward relative to the rotating component. The slider 30 includes a slider housing 34 in which at least two support rollers 36 are arranged, which apply a supporting force between the pawl 12 and a support plate 38 connected to the reinforcing plate 18. Support roller 40 can roll on the support plate 38, and another support roller 42 can roll on the outer contour 44 of the pawl 12. The supporting force between the pawl 12 and the support plate 38 is thus transmitted to the other support roller 42 via support roller 40.

[0039] The parking lock device 10 includes a spring element 46, which is coupled at one end to a support element 26 and at the other end to a slider 30. The spring element applies a spring force to the slider 30 in at least one axial position, particularly a second axial position, along the direction of the first axial position 32. The spring element 46 is designed as a helical spring 50 with a plurality of coils 48.

[0040] The support element 26 is securely connected to the reinforcing plate 18. The support element 26 has a receiving portion 52 in which the spring element 46 is partially received, and the outer spring diameter 56 of the spring element 46 is supported on the inner periphery 54 of the receiving portion to be positioned on the support element 26 relative to at least one direction 58 perpendicular to the axial direction 28, wherein the receiving portion 52 receives at least half of all the spring coils 48 of the spring element 46.

[0041] The spring guide device 60 positions the spring element 46 on the slider 30 relative to at least one direction 62 perpendicular to the axial direction 28. The spring guide device 60 is a separately designed component relative to the slider 30, specifically a pin 64, and is fastened and riveted to the slider at this location. The spring guide device 60 has an axial length 66 extending from the slider 30 toward the support element 26 in the axial direction 28, which is less than the minimum distance 68 between the slider 30 and the support element 26, and less than the minimum spring length 70 of the spring element 46. The minimum spring length 70 is preferably located in a second axial position.

[0042] The spring guide 60 and the spring element 46 overlap at least partially in the axial direction 28. The spring guide 60 is arranged inside the inner spring diameter 72 of the spring element 46. The pin 64 has a lateral surface 74 against which the spring coil 48 rests and thus ensures a defined contact position of the spring element 46 relative to the slider 30, specifically securing the spring element 46 in all directions perpendicular to the axial direction 28.

[0043] Figure 2 It shows Figure 1 The sliding housing of the parking lock device shown. The sliding housing 34 has two opposite side plates 76, which are connected to each other by a transverse plate 78 that is also opposite to each other. A spring guide device 60 is arranged on one transverse plate 78a, and an actuator element for actuating the sliding member 30 is engaged on the other transverse plate 78b.

[0044] Figure 3 A cross-section of a parking lock device according to another specific embodiment of the present invention is shown. The parking lock device 10 is similar to... Figure 1 The parking lock device shown is constructed as follows. The main differences will be described below. The return spring 80 is arranged as a torsion spring on the pawl 12 and preloads the pawl 12 to the released position.

[0045] The spring guide device 60 and the transverse plate 78 of the slider 30 are made as a single piece.

[0046] Figure 4 It shows Figure 3 The sliding housing of the sliding component of the parking lock device shown. The spring guide 60 is integrally formed with the transverse plate 78 as a through hole 82. The spring element can be pressed onto the spring guide 60.

[0047] Figure 5 It shows Figure 4 The cross-section of the housing wall of the sliding housing is shown. The spring guide device 60 has a width of 84, such that a spring element having an inner spring diameter rests against the spring guide device 60 with or without clearance.

[0048] Figure 6 It shows Figure 4 The sliding housing shown has a partially visible spring element. The spring guide 60 is designed as a circular or elliptical through-hole 82, on which a spring element 46 with an inner spring diameter 72 is pressed. The width 84 of the spring guide 60 can be equal to or greater than the inner spring diameter 72.

[0049] Figure 7A three-dimensional view of a parking lock device according to another specific embodiment of the invention is shown. The parking lock device 10 includes a total of two reinforcing plates 18, which are supported on the transmission housing by two bolts 86. A sliding element is defined by two side plates 88, which receive a support plate 38 on the side opposite to the support element 26 in the axial direction 28.

[0050] A total of two sleeves 90 are pressed into the side plates 88, which keeps the two side plates 88 at a certain distance and prevents the roller from dislodging from the slider. Each sleeve 90 receives a screw used to fasten the parking lock device 10 to the transmission, particularly the transmission wall.

[0051] List of reference numerals

[0052] 10 Parking Locking Device

[0053] 12 pawls

[0054] 14 Rotation axis

[0055] 16 bolts

[0056] 18 Reinforced Plate

[0057] 20 Locked Positions

[0058] 24 ratchet teeth

[0059] 26 Support elements

[0060] 28 axial direction

[0061] 30 sliding parts

[0062] 32 First Axial Position

[0063] 34 Sliding Part Housing

[0064] 36 support rollers

[0065] 38 support plate

[0066] 40 support rollers

[0067] 42 Another support roller

[0068] 44 Outer contour

[0069] 46 Spring Components

[0070] 48 spring coils

[0071] 50 coil spring

[0072] 52 Reception Department

[0073] 54 inner weeks

[0074] 56 outer spring diameter

[0075] 58 Vertical direction

[0076] 60 Spring Guide Device

[0077] 62 vertical direction

[0078] 64 sales

[0079] 66 axial length

[0080] 68 minimum distance

[0081] 70 spring length

[0082] 72 inner spring diameter

[0083] 74 Lateral Surfaces

[0084] 76 side panels

[0085] 78 horizontal board

[0086] 80 return spring

[0087] 82 through holes

[0088] 84 width

[0089] 86 bolts

[0090] 88 side panels

[0091] 90 sleeve

Claims

1. A parking lock device (10), comprising: A pivotable pawl (12) is pivotable between a locked position (20) and a released position, wherein the pawl (12) is engaged in a form-locked manner with the rotating component in the locked position, and the pawl (12) is disengaged from the rotating component in the released position. A slider (30) is movable relative to the support element (26) in the axial direction (28) such that the axial position is changed, and the slider deflects the pawl (12) to the locking position (20) in the first axial position (32). A spring element (46) is connected at one end to the support element (26) and at the other end to the slider (30), and the spring element applies a spring force to the slider (30) when the slider (30) is in at least one axial position (32) of the axial position of the slider. A spring guide device (60) positions the spring element (46) on the slider (30) relative to at least one direction (62) perpendicular to the axial direction (28). Its features are, The axial length (66) of the spring guide device (60) extending from the slider (30) toward the support element (26) in the axial direction (28) is less than the minimum spring length (70) of the spring element (46) in the axial direction (28).

2. The parking lock device (10) according to claim 1, characterized in that, The axial length (66) of the spring guide device (60) is less than the minimum distance (68) between the slider (30) and the support element (26) in the axial direction (28).

3. The parking lock device (10) according to claim 1 or 2, characterized in that, The spring guide device (60) and the spring element (46) overlap at least partially in the axial direction (28).

4. The parking locking device (10) according to any one of the preceding claims, characterized in that, The spring element (46) is designed as a helical spring (50) having multiple spring coils (48).

5. The parking lock device (10) according to any one of the preceding claims, characterized in that, The spring guide device (60) is arranged inside the inner spring diameter (72) of the spring element (46).

6. The parking lock device (10) according to any one of the preceding claims, characterized in that, The spring guide device (60) is arranged outside the outer spring diameter (56) of the spring element (46).

7. The parking locking device (10) according to any one of the preceding claims, characterized in that, The support element (26) has a receiving portion (52), and the outer spring diameter (56) of the spring element (46) is supported on the inner periphery (54) of the receiving portion to be positioned on the support element (26) relative to at least one direction (58) perpendicular to the axial direction (28).

8. The parking locking device (10) according to claims 4 and 7, characterized in that, The receiving portion (52) accommodates at least half of the total spring coil (48) of the spring element (46).

9. The parking locking device (10) according to any one of claims 1 to 8, characterized in that, The spring guide device (60) is a component designed separately from the slider (30) and fastened to the slider.

10. The parking locking device (10) according to any one of claims 1 to 8, characterized in that, The spring guide device (60) and the slider (30) are designed as a single piece.

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