Self-suction back door lock device and motor vehicle

Abstract

The present disclosure provides a self-suction back door lock device and a motor vehicle. The self-suction back door lock device of the present disclosure comprises: an actuator mechanism capable of outputting a rotation driving action; a transmission mechanism outputting a rotation driving action based on the rotation driving action output by the actuator mechanism; a suction mechanism outputting a suction action based on the rotation driving action output by the transmission mechanism; a lock bolt rotating to a full lock position based on the suction action of the suction mechanism; the actuator mechanism comprises a motor, a primary gear and a secondary gear, the primary gear receives a rotation action output by a motor shaft of the motor, and the primary gear is capable of reversing the rotation action output by the motor shaft; the secondary gear is in transmission connection with the primary gear, and the rotation axis of the secondary gear is parallel to the rotation axis of the primary gear; and the rotation driving action of the actuator mechanism is output to the transmission mechanism via a rotation center part of the secondary gear.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of back door lock, and particularly relates to a self-suction back door lock device and a motor vehicle. BACKGROUND

[0002] With the development of intelligent and automatic technologies of motor vehicles, the back door (rear door / trunk) of the motor vehicle has begun to use a back door lock with electric opening and closing functions.

[0003] For example, Chinese patent document CN2018104429902 discloses a back door lock system capable of realizing electric suction and electric opening based on one motor.

[0004] The actuator assembly of the back door lock disclosed in the Chinese patent document comprises an actuator shell, an actuator cover plate, a worm gear, a motor, a worm, a manual opening connecting rod, a nut, a manual opening connecting rod torsional spring, an electric opening connecting rod, an electric opening connecting rod torsional spring, a nut reset switch, a lock tongue switch, a pawl switch, a manual reset pull rod, a first connecting screw, a second connecting screw, a lock body shell and a bottom plate and the like. The lock body assembly comprises a lock body shell, a lock tongue rivet, a lock tongue, a bottom plate, a pawl, a pawl rivet, a pawl release member, a pawl torsional spring, a lock tongue torsional spring, a lock tongue switch pull rod, a suction first pull rod, a suction second pull rod, a suction first pull rod connecting rivet, a suction pull rod rivet, a suction first pull rod torsional spring, a suction second pull rod torsional spring, a lock catch buffer block and a pawl release rod torsional spring and the like. The driving mechanism, the transmission mechanism, the suction mechanism and the unlocking mechanism all have a relatively complex structure.

[0005] The existing back door lock system, as it is desired to realize the functions of electric suction and electric unlocking through one motor, often has a complex structure, and the reliability and stability are challenged, so it is necessary to improve the structure or optimize the performance of the driving mechanism, the transmission mechanism, the suction mechanism, the unlocking mechanism, the lock tongue and the signal system of the back door lock system. SUMMARY

[0006] The present disclosure designs a new self-suction back door lock device, and the self-suction back door lock device and the motor vehicle of the present disclosure are realized through the following technical solutions.

[0007] According to one aspect of the present disclosure, a self-suction back door lock device is provided, comprising:

[0008] an actuator mechanism capable of outputting a rotary driving action;

[0009] a transmission mechanism outputting a rotary driving action based on the rotary driving action output by the actuator mechanism;

[0010] a suction mechanism outputting a suction action based on the rotary driving action output by the transmission mechanism;

[0011] a lock tongue, which is turned to a full lock position based on the latching action of the latching mechanism;

[0012] The actuator mechanism comprises a motor, a primary gear and a secondary gear. The primary gear receives the rotating action output by the motor shaft of the motor, and the primary gear can reverse the rotating action output by the motor shaft.

[0013] The secondary gear is in transmission connection with the primary gear, and the rotating axis of the secondary gear is parallel to the rotating axis of the primary gear.

[0014] The secondary gear is in the shape of a sector, so as to limit the action range of the rotating driving action output by the secondary gear.

[0015] The rotating driving action of the actuator mechanism is output to the transmission mechanism via the rotating center part of the secondary gear.

[0016] According to the self-suction back door lock device of at least one embodiment of the present disclosure, the rotating center part of the secondary gear rotates around the secondary gear shaft to output the rotating driving action to the transmission mechanism.

[0017] According to the self-suction back door lock device of at least one embodiment of the present disclosure, the rotating center part of the secondary gear is provided with a secondary gear first driving part.

[0018] When the secondary gear rotates around the secondary gear shaft, the secondary gear first driving part synchronously rotates around the secondary gear shaft.

[0019] According to the self-suction back door lock device of at least one embodiment of the present disclosure, the central angle corresponding to the sector shape of the secondary gear is greater than 90° and less than 180°.

[0020] According to the self-suction back door lock device of at least one embodiment of the present disclosure, the secondary gear first driving part is fixedly connected with the transmission mechanism, so as to drive the transmission mechanism.

[0021] According to the self-suction back door lock device of at least one embodiment of the present disclosure, the self-suction back door lock device further comprises:

[0022] a pawl, which can keep the lock tongue in the full lock position;

[0023] an electric unlocking lever, which can be driven by the secondary gear to operate the pawl, so that the pawl releases the keeping of the lock tongue.

[0024] According to the self-suction back door lock device of at least one embodiment of the present disclosure, the secondary gear includes a secondary gear second driving part, and the secondary gear drives the electric unlocking lever via the secondary gear second driving part.

[0025] According to the self-suction back door lock device of at least one embodiment of the present disclosure, the secondary gear second driving part is protruded from the rotation center part of the secondary gear.

[0026] According to the self-suction back door lock device of at least one embodiment of the present disclosure, when the secondary gear rotates in a first direction, it can drive the transmission mechanism, and when the secondary gear rotates in a second direction opposite to the first direction, it can drive the electric unlocking lever.

[0027] According to the self-suction back door lock device of at least one embodiment of the present disclosure, the force-accepting end of the electric unlocking lever can be driven by the secondary gear second driving part.

[0028] According to the self-suction back door lock device of at least one embodiment of the present disclosure, it further includes an electric unlocking lever signal switch, which is triggered and generates a trigger signal when the electric unlocking lever is driven to drive the pawl, and the electric unlocking lever signal switch is no longer triggered by the electric unlocking lever when the electric unlocking lever is reset to the initial position.

[0029] In the self-suction back door lock device of at least one embodiment of the present disclosure, the electric unlocking lever is formed with a concave area, and the triggered part of the electric unlocking lever signal switch is located in the concave area when the electric unlocking lever is reset to the initial position.

[0030] According to the self-suction back door lock device of at least one embodiment of the present disclosure, the secondary gear first driving part is protruded outward from the rotation center part of the secondary gear in the axial direction of the secondary gear shaft.

[0031] According to the self-suction back door lock device of at least one embodiment of the present disclosure, the secondary gear first driving part is arc-shaped protrusion, and the number of the secondary gear first driving parts is preferably more than two and is uniformly distributed around the secondary gear shaft.

[0032] According to the self-suction back door lock device of at least one embodiment of the present disclosure, it further includes:

[0033] According to the self-suction back door lock device of at least one embodiment of the present disclosure, the pawl signal switch is triggered by the pawl during the process of disengaging the lock tongue from the engagement of the electric unlocking lever, and the pawl signal switch generates a signal indicating that the pawl performs the unlocking process.

[0034] According to the self-suction back door lock device of at least one embodiment of the present disclosure, the pawl is designed to include:

[0035] a retaining portion for retaining the bolt;

[0036] a force receiving portion for receiving a driving action of the electric unlocking rod;

[0037] wherein a concave area is formed between the retaining portion and the force receiving portion to adapt to the action of the electric unlocking rod.

[0038] The self-suction back door lock device according to at least one embodiment of the present disclosure further comprises:

[0039] a pawl signal rod coaxially arranged with the pawl and synchronously driven by the electric unlocking rod;

[0040] wherein a pawl signal rod trigger portion is arranged on the pawl signal rod, which extends along the direction of the pawl rotation axis to perform the triggering of the pawl to the pawl signal switch.

[0041] The self-suction back door lock device according to at least one embodiment of the present disclosure, the bolt is provided with a bolt wall portion, which comprises at least a first bolt wall portion and a second bolt wall portion, the distance from the first bolt wall portion to the center of the bolt rotation is less than the distance from the second bolt wall portion to the center of the bolt rotation;

[0042] When the bolt is in the fully locked position, the transverse extension of the pawl signal rod abuts against the second bolt wall portion, at this time, the pawl signal rod trigger portion leaves the pawl signal switch and does not trigger the pawl signal switch;

[0043] When the bolt moves from the fully locked position to the half-open position or the fully open position, the second bolt wall portion limits the transverse extension, so that the pawl signal rod remains in the position of triggering the pawl signal switch.

[0044] According to another aspect of the present disclosure, a motor vehicle is provided, which comprises the self-suction back door lock device according to any one of the embodiments of the present disclosure. BRIEF DESCRIPTION OF DRAWINGS

[0045] The accompanying drawings illustrate exemplary embodiments of the present disclosure and together with the general description of the present disclosure given above, and the detailed description of the embodiments given below, serve to explain the principles of the present disclosure. These drawings are included herewith and constitute a part of this specification.

[0046] Figure 1 is a schematic diagram of the overall structure of a self-suction back door lock device according to one embodiment of the present disclosure.

[0047] Figure 2 is Figure 1Structure diagram of another perspective (back perspective) of the self-suction back door lock device.

[0048] Figure 3 is Figure 2 Structure diagram of the self-suction back door lock device after removing the lock body bottom plate.

[0049] Figure 4 is Figure 1 Structure diagram of the self-suction back door lock device after removing the support plate and the lock catch.

[0050] Figure 5 is Figure 4 Structure diagram of the self-suction back door lock device after removing part of the actuator shell.

[0051] Figure 6 is Figure 5 Structure diagram of the self-suction back door lock device after removing part of the structure.

[0052] Figure 7 Partial structure diagram of another perspective of the self-suction back door lock device of one embodiment of the present disclosure.

[0053] Figure 8 Partial structure diagram of yet another perspective of the self-suction back door lock device of one embodiment of the present disclosure.

[0054] Figure 9 Partial structure diagram of yet another perspective of the self-suction back door lock device of one embodiment of the present disclosure.

[0055] Figure 10 Partial structure diagram of yet another perspective of the self-suction back door lock device of one embodiment of the present disclosure.

[0056] Reference Signs List

[0057] 1 actuator mechanism

[0058] 2 lock body mechanism

[0059] 3 lock catch

[0060] 4 electric unlocking rod

[0061] 11 primary gear

[0062] 12 secondary gear

[0063] 13 motor

[0064] 21 lock tongue

[0065] 22 pawl

[0066] 50 Suction lever

[0067] 60 Suction push lever

[0068] 70 Gear push lever

[0069] 81 Common shaft

[0070] 82 Push lever spring

[0071] 100 Self-suction back door lock device

[0072] 101 Actuator housing

[0073] 102 Support plate

[0074] 121 Secondary gear teeth

[0075] 122 Secondary gear shaft

[0076] 123 Secondary gear first driving part

[0077] 124 Secondary gear second driving part

[0078] 131 Motor shaft

[0079] 201 Lock body housing

[0080] 202 Lock body bottom plate

[0081] 203 Through hole

[0082] 204 Pre-installation hook

[0083] 211 Latch shaft

[0084] 212 Latch spring

[0085] 213 Latch signal switch

[0086] 214 Latch signal pull rod

[0087] 215 Hollow feature

[0088] 216 Latch signal pull rod spring

[0089] 217 Fish mouth feature

[0090] 218 Latch suction shaft

[0091] 219 Latch wall part

[0092] 221 Pawl shaft

[0093] 222 Pawl signal switch

[0094] 223 Pawl spring

[0095] 224 pawl signal rod

[0096] 401 electric unlocking rod signal switch

[0097] 402 electric unlocking rod shaft

[0098] 501 suction lever operation shaft

[0099] 502 suction lever shaft

[0100] 503 suction lever force receiving end

[0101] 1202 lock body bottom plate

[0102] 2191 first section of lock tongue wall part

[0103] 2192 second section of lock tongue wall part

[0104] 2241 pawl signal rod trigger part

[0105] 2242 transverse extension part DETAILED DESCRIPTION

[0106] The present disclosure will be further described below in conjunction with the drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the related content, and not to limit the present disclosure. In addition, it should be noted that only parts related to the present disclosure are shown in the drawings for ease of description.

[0107] It should be noted that the embodiments in the present disclosure and the features in the embodiments can be combined with each other without conflict. The technical solutions of the present disclosure will be described in detail below with reference to the drawings and in conjunction with the embodiments.

[0108] Unless otherwise specified, the exemplary embodiments / instances shown will be understood to provide exemplary features of various details that can implement the technical concepts of the present disclosure in practice. Therefore, unless otherwise specified, the features of various embodiments / instances can be additionally combined, separated, interchanged and / or rearranged without departing from the technical concepts of the present disclosure.

[0109] The use of cross-hatching and / or shading in the drawings is generally used to illustrate the boundaries and / or transitions from one portion of a part to another portion of the part. As such, unless specified, the presence of cross-hatching or shading in no way supercedes, or otherwise clarifies, any aspect of the parts described as being clear, transparent, opaque, solid, formed, unformed, etc. Moreover, in the drawings, the size and relative sizes of parts can be exaggerated for clarity. When exemplary embodiments can be carried out in different ways, the specific sequential order described can be performed in a different order. For example, two sequentially described processes can be performed at the same time or in reverse order. Also, similar reference numerals denote similar parts throughout the description.

[0110] When a part is referred to as being "on" or "on top of" another part, "connected to" or "coupled to" another part, it can be directly on, directly connected to, or directly coupled to the other part, or intervening parts can be present. In contrast, when an part is referred to as being "directly on", "directly connected to", or "directly coupled to" another part, there are no intervening parts present. For example, the term "connected" can refer to physical or electrical connection, whether direct or through intervening parts.

[0111] For descriptive purposes, the disclosure can use spatial or relative terms, such as "below", "lower", "lowermost", "above", "upper" and "uppermost", "vertical", "horizontal", and the like, which are sometimes used for the purpose of explanation only. Such spatial and / or relative terms can encompass different positions and orientations of the device in use, operation, and / or manufacture. For example, if the device in the figures is turned over, elements described as "below" or "beneath" other elements or features would then be oriented "above" the other elements or features. Thus, the exemplary term "below" can encompass both an orientation of above and below. Moreover, the device can be otherwise oriented (e.g., rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

[0112] The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting. As used herein, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. Furthermore, to the extent that the terms "comprise," "include," "contain," and / or "comprising," "including," and / or "contain" are used in the detailed description and / or claims, such terms are intended to be inclusive in a manner similar to the terms "comprise" and / or "comprising," as an appreciation of the scope of the embodiments is derived from the claims. It is also noted that, as used in the description herein and the appended claims, the terms "substantial," "approximately," and other similar terms are used in a relative sense and are not intended to connote a precise relationship.

[0113] The following detailed description is made with reference to the accompanying drawings. Figures 1 to 10 A self-suction back door lock device of the present disclosure is described in detail.

[0114] Figure 1 is a schematic diagram of the overall structure of a self-suction back door lock device 100 according to an embodiment of the present disclosure.

[0115] Referring to Figure 1 , in some embodiments of the present disclosure, the self-suction back door lock device 100 of the present disclosure includes an actuator mechanism 1, a lock body mechanism 2, a lock catch 3, referring to Figure 1 , the actuator mechanism 1 includes an actuator housing 101 for accommodating a motor assembly (described below), a gear drive assembly (described below), and a support plate 102 for mounting a suction lever shaft (described below), a suction push rod shaft (described below), and a gear push rod shaft (described below), and the support plate 102 can improve the strength of the overall housing of the self-suction back door lock device 100.

[0116] Continuing to refer to Figure 1 , the lock body mechanism 2 of the present disclosure includes a lock body housing 201 and a lock body bottom plate 202, which form an accommodation cavity to accommodate components such as a latch bolt, a pawl, etc. Via the lock body bottom plate 202, the self-suction back door lock device 100 can be mounted on a motor vehicle body, and a plurality of through holes 203 can be provided on the lock body bottom plate 202 to fixedly connect the lock body bottom plate 202 with the motor vehicle body.

[0117] Referring to Figure 1 , the actuator housing 101 is fixedly connected with the lock body bottom plate 202.

[0118] Figure 1In the embodiment, the lock body shell 201 is installed at the first area of the lock body bottom plate 202, the actuator shell 101 is installed at the second area of the lock body bottom plate 202, the lock body bottom plate 202 preferably has a bent shape, and the installation surface of the first area of the lock body bottom plate 202 and the installation surface of the second area of the lock body bottom plate 202 preferably form a 90-degree angle or an obtuse angle of a preset angle.

[0119] Figure 1 In the embodiment, the support plate 102 is installed between and fixedly connected with the actuator shell 101 and the lock body shell 201.

[0120] Figure 1 In the embodiment, the lock tongue shaft (which can be a lock tongue rivet) and the pawl shaft (which can be a pawl rivet) are also shown.

[0121] Figure 1 The actuator shell 101, the support plate 102, the lock body shell 201, and the lock body bottom plate 202 shown in the embodiment are exemplary shapes, and those skilled in the art can adjust the shapes or structures of the actuator shell 101, the support plate 102, the lock body shell 201, and the lock body bottom plate 202 under the inspiration of the disclosed technical solutions, all of which fall within the protection scope of the disclosure.

[0122] Figure 2 is Figure 1 The structure schematic diagram of another perspective (back perspective) of the self-suction back door lock device 100 is shown.

[0123] Figure 2 In the embodiment, two pre-installation hooks 204 are also configured on the back of the first area of the lock body bottom plate 202, and the lock body bottom plate 202 can be pre-installed at the installation position on the body of the motor vehicle via the two pre-installation hooks 204. Those skilled in the art can adjust the number and structure of the pre-installation hooks 204 under the inspiration of the disclosed technical solutions, all of which fall within the protection scope of the disclosure.

[0124] Figure 3 is Figure 2 The structure schematic diagram of the self-suction back door lock device 100 after removing the lock body bottom plate 1202 is shown.

[0125] Reference is made to Figure 3 , Figure 3The lock body mechanism 2 is shown to include a lock bolt 21 and a pawl 22, the lock bolt 21 is rotatable about a lock bolt shaft 211 (the lock bolt shaft can be in the form of a lock bolt rivet) to actuate between a fully locked position and a fully unlocked position, or between a fully locked position - a half locked position (a half unlocked position) - a fully unlocked position, when the lock bolt 21 is actuated to the fully locked position, the pawl 22 can be operated to retain the lock bolt 21 in the fully locked position by a locking position of the pawl 22 cooperating with a locking position of the lock bolt 21, in some embodiments of the present disclosure, when the lock bolt 21 is actuated to the half locked position, the pawl 22 can be operated to retain the lock bolt 21 in the half locked position by a locking position of the pawl 22.

[0126] The basic working principle of the lock bolt 21 and the pawl 22 belongs to the prior art, and the present disclosure does not make special limitations thereon.

[0127] Referring to Figure 3 , the self-suction back door lock device 100 of the present disclosure further includes a pawl shaft 221, the pawl shaft 221 can be in the form of a pawl rivet, and the pawl 22 can be operated to rotate about the pawl shaft 221.

[0128] The self-suction back door lock device 100 of the present disclosure further includes an electric unlocking lever 4, which can be driven by the actuator mechanism 1 to operate the pawl 22, so that the pawl 22 releases the retention of the lock bolt 21 in the fully locked position, so that the lock bolt 21 can be actuated to the fully unlocked position under the elastic force of the lock bolt spring 212 (refer to Figure 6 ).

[0129] The cooperation mode of the lock bolt spring 212 and the lock bolt 21 belongs to the prior art, and the present disclosure does not make special limitations thereon.

[0130] Referring to Figure 3 , in some embodiments of the present disclosure, the self-suction back door lock device 100 of the present disclosure further includes an electric unlocking lever signal switch 401, when the electric unlocking lever 4 is in the process of operating the pawl 22, that is, the unlocking process, the electric unlocking lever 4 triggers the electric unlocking lever signal switch 401 to generate a signal indicating the unlocking process. When the electric unlocking lever 4 is reset to the initial state, the electric unlocking lever 4 releases the electric unlocking lever signal switch 401, and the electric unlocking lever signal switch 401 no longer generates a trigger signal. The electric unlocking lever signal switch 401 can be a micro switch.

[0131] Figure 3A pawl signal switch 222 is also shown, which is triggered by the pawl 22 during the unlocking process, i.e. disengagement from the locking tongue 21, and generates a signal indicating that the pawl 22 has performed the unlocking process. When the pawl 22 is actuated to the position for locking and holding the locking tongue 21 by the elastic force of the pawl spring 223, the pawl 22 releases the pawl signal switch 222, which can be a micro switch.

[0132] In some embodiments of the present disclosure, with reference to Figure 3 The self-sucking back door lock device 100 of the present disclosure further comprises a locking tongue signal switch 213, a locking tongue signal pull rod 214, and a locking tongue signal pull rod spring 216, which rotates the locking tongue signal pull rod 214 towards the locking tongue 21 so that the locking tongue signal pull rod 214 is always in contact with the locking tongue 21. For further reference Figure 6 When the locking tongue 21 is actuated to the fully locked position, the locking tongue signal pull rod 214 will be rotated to a position to trigger the locking tongue signal switch 213, which generates a signal indicating that the locking tongue 21 has reached the fully locked position.

[0133] With continued reference to Figure 3 The locking tongue 21 of the present disclosure forms a fish mouth feature 217 (i.e. a recessed feature) for cooperating with the lock catch 3. At least one hollow feature 215 is formed on the locking tongue 21 near the fish mouth feature 217 to buffer the impact of the lock catch 3 on the locking tongue 21 and reduce noise.

[0134] Figure 4 is Figure 1 A structural schematic diagram of the self-sucking back door lock device 100 is shown after removing the support plate 102 and the lock catch 3.

[0135] With reference to Figure 4 , Figure 4 The locking tongue 21 has a locking tongue suction shaft 218, as shown in Figure 4 A suction lever 50 is also shown, which can operate the locking tongue 21 based on the locking tongue suction shaft 218 to actuate to the fully locked position.

[0136] The present disclosure designs the structure of the suction lever 50 and the locking tongue suction shaft 218 of the locking tongue 21, which has an extension dimension in the direction perpendicular to the rotation plane of the locking tongue 21. With reference to Figure 4 The suction lever 50 operates the locking tongue suction shaft 218 based on the suction lever operation shaft 501, so that the locking tongue 21 is actuated to the fully locked position.

[0137] The suction lever 50 rotates around the suction lever shaft 502 in the process of performing the suction operation on the latch suction shaft 218 based on the suction lever operation shaft 501, wherein the suction lever shaft 502 is parallel to the suction lever operation shaft 501, and both the suction lever shaft 502 and the suction lever operation shaft 501 are parallel to the latch suction shaft 218.

[0138] The structure design of the present disclosure enables the suction lever 50 to perform the suction operation on the latch 21 based on the rotating action, and reduces the movement path of the suction lever 50.

[0139] In order to reduce noise and force required for the suction operation as much as possible during the suction operation, the suction lever operation shaft 501 includes a suction lever operation shaft body fixedly connected with the suction lever 50 and a suction lever operation shaft sleeve sleeved on the suction lever operation shaft body, and the suction lever operation shaft sleeve is rotatable relative to the suction lever operation shaft body; the latch suction shaft 218 includes a latch suction shaft body (fixedly connected with the latch 21) and a latch suction shaft sleeve, and the latch suction shaft sleeve is sleeved on the latch suction shaft body and is rotatable relative to the latch suction shaft body.

[0140] The structure design of the present disclosure enables the suction lever 50 to perform the suction operation on the latch 21 without sliding therebetween, thereby stably performing the suction operation.

[0141] The pin can be used as the suction lever operation shaft 501 and the latch suction shaft 218 described above, and those skilled in the art can adjust the structure of the suction lever operation shaft 501 and the latch suction shaft 218 under the inspiration of the technical scheme of the present disclosure, which falls within the protection scope of the present disclosure.

[0142] Figure 5 is Figure 4 The structure schematic diagram of the self-suction back door lock device 100 after removing a part of the actuator housing 101 is shown.

[0143] Reference Figure 4 and Figure 5 The self-suction back door lock device 100 of the present disclosure further includes a suction push rod 60 and a gear push rod 70, and the actuator mechanism 1 includes a motor 13, a primary gear 11, and a secondary gear 12.

[0144] The motor 13 outputs the rotating action via the motor shaft 131, and the output end of the motor shaft 131 is in the form of a worm, i.e., the surface is formed with threads. In some other embodiments of the present disclosure, the motor shaft 131 can also be fixedly connected with the worm to output the rotating action via the worm.

[0145] The primary gear 11 receives the rotating action output by the motor shaft 131, and the primary gear 11 can reverse the rotating action output by the motor shaft 131. In some embodiments of the present disclosure, the axis of the motor shaft 131 is perpendicular to the axis of the primary gear 11.

[0146] With continued reference to Figure 5 , the secondary gear 12 of the present disclosure is in driving connection (meshing) with the primary gear 11, and the rotating axis of the secondary gear 12 is parallel to the rotating axis of the primary gear 11.

[0147] The gear push rod 70 described above in the present disclosure can rotate under the driving of the secondary gear 12, and the rotating plane of the gear push rod 70 is perpendicular to the rotating axis of the secondary gear 12.

[0148] The structure of the secondary gear 12 is designed in the present disclosure, and the secondary gear 12 is designed in a fan shape in the present disclosure to limit the action range of the rotating driving action output by the secondary gear 12.

[0149] With reference to Figure 5 , in the preferred embodiments of the present disclosure, the secondary gear 12 has a secondary gear tooth portion 121, a secondary gear shaft 122, and a secondary gear first driving portion 123.

[0150] The primary gear 11 can adopt the form of coaxial configuration of a large gear and a small gear, the large gear is in driving connection (meshing) with the motor shaft 131, and the small gear is in driving connection (meshing) with the secondary gear tooth portion 121.

[0151] The secondary gear 12 can rotate around the secondary gear shaft 122, and when the secondary gear 12 rotates, the secondary gear first driving portion 123 also rotates around the secondary gear shaft 122. In some preferred embodiments of the present disclosure, the secondary gear first driving portion 123 is arranged at the position adjacent to the secondary gear shaft 122, the secondary gear 12 is in driving connection with the gear push rod 70 described above via the secondary gear first driving portion 123, and when the secondary gear 12 rotates, the gear push rod 70 is driven to rotate via the secondary gear first driving portion 123.

[0152] With reference to Figure 5 , the first end portion of the suction push rod 60 and the first end portion of the gear push rod 70 are coaxially arranged and are both sleeved on the common shaft 81, the first end portion of the suction push rod 60 and the first end portion of the gear push rod 70 are in driving connection via the push rod spring 82 sleeved on the common shaft 81, and the rotating action of the gear push rod 70 is transmitted to the suction push rod 60 via the push rod spring 82 to drive the suction push rod 60 to rotate.

[0153] The push rod spring 82 of the present disclosure makes the suction push rod 60 and the gear push rod 70 have a mutual close tendency, and the elastic force of the push rod spring 82 makes the second end of the suction push rod 60 abut against the suction lever force end 503 of the suction lever 50, referring to Figure 4 and Figure 5 The suction lever force end 503 has a concave shape to adapt to receiving the driving force of the second end of the suction push rod 60.

[0154] The skilled in the art can adjust the specific shape of the suction lever 50, the suction push rod 60, and the gear push rod 70 under the inspiration of the technical solutions of the present disclosure, which all fall within the protection scope of the present disclosure.

[0155] Referring to Figure 4 and Figure 5 The driving action of the motor 13 is transmitted to the suction lever 50 via the primary gear 11, the secondary gear 12, the gear push rod 70, and the suction push rod 60, so that the suction lever 50 drives the lock tongue suction shaft 218 via the suction lever operation shaft 501, so that the lock tongue 21 moves to the full lock position to complete the suction operation.

[0156] Figure 6 is Figure 5 The structure schematic diagram of the self-suction back door lock device 100 after removing part of the structure is shown.

[0157] Figure 6 The size gear structure of the primary gear 11 is shown, and the secondary gear first driving part 123 is shown. The secondary gear 12 rotates around the secondary gear shaft 122 under the driving of the primary gear 11. The secondary gear first driving part 123 drives the gear push rod 70 described above, so that the gear push rod 70 drives the suction push rod 60 based on the first end thereof.

[0158] Figure 5 and Figure 6 The secondary gear second driving part 124 is also shown, which is used to drive the electric unlocking lever 4 to drive the pawl 22 to disengage from the engagement with the lock tongue 21.

[0159] Referring to Figure 5 and Figure 6 When the secondary gear 12 rotates in the first direction (counterclockwise direction in Figure 5 , the secondary gear 12 drives the gear push rod 70 via the secondary gear first driving part 123, and when the secondary gear 12 rotates in the second direction (clockwise direction in Figure 5clockwise direction in the figure), the secondary gear 12 drives the electric unlocking lever 4 via the secondary gear second driving part 124 to perform the electric unlocking operation. When the secondary gear 12 of the present disclosure drives the electric unlocking lever 4, the suction push rod 60 is abutted against the suction lever force receiving end 503 due to the action of the push rod spring 82, without being separated from the suction lever 50. Referring to Figure 6 and Figure 5 When the driving force output by the motor 13 drives the secondary gear 12 to drive the gear push rod 70, the gear push rod 70 drives the suction push rod 60, the suction push rod 60 drives the suction lever 50, and the suction lever 50 performs the suction operation on the lock tongue 21.

[0160] Referring to Figure 6 and Figure 7 When the driving action output by the motor 13 drives the lock tongue 21 to reach the full lock position, the lock tongue signal switch 213 is triggered, and the motor 13 is reversed to return to the initial position.

[0161] Figure 8 is another perspective view of the partial structure of the self-suction back door lock device 100 of one embodiment of the present disclosure.

[0162] Figure 9 is another perspective view of the partial structure of the self-suction back door lock device 100 of one embodiment of the present disclosure.

[0163] Figure 10 is another perspective view of the partial structure of the self-suction back door lock device 100 of one embodiment of the present disclosure.

[0164] Figure 7 is another perspective view of the partial structure of the self-suction back door lock device 100 of one embodiment of the present disclosure.

[0165] Referring to Figure 8 and Figure 9 In the process of the motor 13 outputting the driving action (in the opposite direction of the driving action for suctioning the lock tongue) to drive the electric unlocking lever 4 to drive the pawl 22 to perform the electric unlocking operation, the electric unlocking lever signal switch 401 is triggered to generate a signal indicating the electric unlocking process.

[0166] When the pawl 22 is driven by the electric unlocking lever 4 and disengages from the locking position of the latch 21, the pawl 22 will trigger the pawl signal switch 222. The pawl signal switch 222 generates a trigger signal. Based on the trigger signal generated by the pawl signal switch 222, the motor 13 stops outputting the driving action and returns to the initial position. At this time, the latch 21 moves to the fully open position based on the elastic force of the latch spring 212. The electric unlocking lever 4 returns to the initial position based on the electric unlocking lever spring, releasing the trigger of the electric unlocking lever trigger switch 401. The pawl 22 will move to the initial position under the action of the elastic force of the pawl spring 223.

[0167] refer to Figure 9 At this time, the latch 21 is in the fully locked position, and the pawl 22 engages with the locking position of the latch 21 to keep the latch 21 in the fully locked position.

[0168] refer to Figure 9 When the pawl 22 is driven by the electric unlocking lever 4 to disengage from the locking position of the bolt 21, the pawl 22 will trigger the pawl signal switch 222 based on the pawl signal lever 224. In the preferred embodiment of this disclosure, the pawl signal lever 224 is coaxially arranged with the pawl 22 and can be driven synchronously by the electric unlocking lever 4, and can move synchronously towards the bolt 21 based on the pawl spring 223.

[0169] In some embodiments of this disclosure, a pawl signal rod triggering part 2241 is disposed on the pawl signal rod 224. The pawl signal rod triggering part 2241 extends along the direction of the pawl rotation axis to execute the triggering of the pawl signal switch 222 by the pawl 22.

[0170] In some embodiments of this disclosure, the latch 21 is provided with a latch wall 219, which includes at least a first segment and a second segment. The distance between the first segment 2191 and the center of the latch rotation is less than the distance between the second segment and the center of the latch. When the latch 21 is in the fully locked position, the lateral extension 2242 of the pawl signal rod 224 abuts against the second segment 2192 of the latch wall. At this time, the pawl signal rod triggering part 2241 retracts the pawl signal switch 222 and does not trigger the pawl signal switch 222.

[0171] When the locking tongue 21 is Figure 10 When the shown state moves to the half-open or fully open position, the second section of the latch wall will restrict the lateral extension 2242, so that the pawl signal rod 224 remains in the position of compressing and triggering the pawl signal switch 222.

[0172] refer to Figure 10 The diagram shows the first drive unit 123 and the second drive unit 124 of the secondary gear, as well as the latch signal lever 214.

[0173] Reference Figure 3 and in combination Figures 1 to 10 , the lock tongue signal pull rod 214 is always abutted against the abutment position of the edge of the lock tongue 21 under the elastic force of the lock tongue signal pull rod spring 216, and the axis around which the lock tongue signal pull rod 214 rotates is parallel to the axis around which the electric unlocking rod 4 rotates.

[0174] Those skilled in the art can adjust the structure of the lock tongue signal pull rod 214 and the matching mode with the lock tongue 21 under the inspiration of the technical solutions of the present disclosure, which all fall within the protection scope of the present disclosure.

[0175] In some embodiments of the present disclosure, the lock tongue signal pull rod 214 can be cancelled and the position of the lock tongue signal switch 213 is adjusted, for example, the lock tongue signal switch 213 is triggered based on the triggering feature of the edge of the lock tongue 21 to generate a signal that the lock tongue 21 reaches the full locking position.

[0176] It should be noted that the self-suction back door lock device of the present disclosure ​ The structure shown is to make a detailed description of the self-suction back door lock device of the present disclosure, and should not be understood as a limitation on the technical solutions of the self-suction back door lock device of the present disclosure.

[0177] Based on the above description, the present disclosure can provide a self-suction back door lock device of the following technical solutions.

[0178] Technical solution 1: A self-suction back door lock device 100, comprising:

[0179] An actuator mechanism 1, the actuator mechanism 1 can output a rotating driving action;

[0180] A transmission mechanism (gear push rod 70), the transmission mechanism outputs a rotating driving action based on the rotating driving action output by the actuator mechanism 1;

[0181] A suction mechanism (suction lever 50, suction push rod 60), the suction mechanism outputs a suction action based on the rotating driving action output by the transmission mechanism;

[0182] A lock tongue 21, the lock tongue 21 rotates to a full locking position based on the suction action of the suction mechanism;

[0183] Wherein, the actuator mechanism 1 comprises a motor 13, a primary gear 11 and a secondary gear 12, the primary gear 11 receives the rotating action output by the motor shaft 131 of the motor 13, and the primary gear 11 can reverse the rotating action output by the motor shaft 131;

[0184] The secondary gear 12 is in transmission connection with the primary gear 11, and the rotating axis of the secondary gear 12 is parallel to the rotating axis of the primary gear 11;

[0185] The secondary gear 12 is in a sector shape to limit the range of the rotational driving action output by the secondary gear 12;

[0186] The rotational driving action of the actuator mechanism 1 is output to the transmission mechanism via the rotational center portion of the secondary gear 12.

[0187] Technical solution 2: The self-suction back door lock device 100 according to technical solution 1, wherein the secondary gear 12 comprises a secondary gear shaft 122, and the rotational center portion of the secondary gear 12 rotates around the secondary gear shaft 122 to output the rotational driving action to the transmission mechanism.

[0188] Technical solution 3: The self-suction back door lock device 100 according to technical solution 2, wherein the rotational center portion of the secondary gear 122 is provided with a secondary gear first driving portion 123.

[0189] When the secondary gear 12 rotates around the secondary gear shaft 122, the secondary gear first driving portion 123 synchronously rotates around the secondary gear shaft 122.

[0190] Technical solution 4: The self-suction back door lock device 100 according to any one of technical solutions 1 to 3, wherein the sector shape of the secondary gear 12 corresponds to a central angle greater than 90° and less than 180°.

[0191] Technical solution 5: The self-suction back door lock device 100 according to technical solution 3, wherein the secondary gear first driving portion 123 is fixedly connected with the transmission mechanism (the gear push rod 70) to drive the transmission mechanism.

[0192] Technical solution 6: The self-suction back door lock device 100 according to technical solution 3, further comprising:

[0193] The pawl 22 can hold the lock tongue 21 in the full locking position.

[0194] The electric unlocking rod 4 can be driven by the secondary gear 12 to operate the pawl 22, so that the pawl 22 releases the holding of the lock tongue 21.

[0195] Technical solution 7: The self-suction back door lock device 100 according to technical solution 6, wherein the secondary gear 12 comprises a secondary gear second driving portion 124, and the secondary gear 12 drives the electric unlocking rod 4 via the secondary gear second driving portion 124.

[0196] Technical solution 8: The self-suction back door lock device 100 according to technical solution 7, wherein the secondary gear second driving portion 124 is protruded from the rotational center portion of the secondary gear 12.

[0197] Technical solution 9: According to the self-suction back door lock device 100 of technical solution 6, when the secondary gear 12 rotates in the first direction, it can drive the transmission mechanism, and when the secondary gear 12 rotates in the second direction opposite to the first direction, it can drive the electric unlocking rod 4.

[0198] Technical solution 10: According to the self-suction back door lock device 100 of technical solution 7, the force receiving end of the electric unlocking rod 4 can be driven by the secondary gear second driving part 124.

[0199] Technical solution 11: According to the self-suction back door lock device 100 of technical solution 6, it further comprises an electric unlocking rod signal switch 401, when the electric unlocking rod 4 is driven to drive the pawl 22, the electric unlocking rod signal switch 401 is triggered and generates a trigger signal; when the electric unlocking rod 4 is reset to the initial position, the electric unlocking rod signal switch 401 is no longer triggered by the electric unlocking rod 4.

[0200] Among them, the electric unlocking rod 4 is formed with a concave area, when the electric unlocking rod 4 is reset to the initial position, the triggered part of the electric unlocking rod signal switch 401 is located in the concave area.

[0201] Technical solution 12: According to the self-suction back door lock device 100 of technical solution 3, the secondary gear first driving part 123 protrudes outward from the rotation center part of the secondary gear in the axial direction of the secondary gear shaft 122.

[0202] Technical solution 13: According to the self-suction back door lock device 100 of technical solution 12, the secondary gear first driving part 123 is arc-shaped protrusion, the number of secondary gear first driving part 123 is preferably more than two, and is uniformly distributed around the secondary gear shaft 122.

[0203] Technical solution 14: According to the self-suction back door lock device 100 of technical solution 6, it further comprises:

[0204] Pawl signal switch 222, when the pawl 22 is operated by the electric unlocking rod 4 to disengage the latch 21, the pawl 22 triggers the pawl signal switch 222, and the pawl signal switch 222 generates a signal indicating that the pawl 22 performs the unlocking process.

[0205] Technical solution 15: According to the self-suction back door lock device 100 of technical solution 14, the pawl 22 is designed to include:

[0206] The holding part for holding the latch 21;

[0207] The force receiving part for receiving the driving action of the electric unlocking rod 4;

[0208] Among them, the holding part and the force receiving part form a concave area to adapt to the action of the electric unlocking rod 4.

[0209] Technical solution 16: The self-suction back door lock device 100 according to technical solution 15, further comprising:

[0210] The pawl signal rod 224 is coaxially arranged with the pawl 22 and can be synchronously driven by the electric unlocking rod 4.

[0211] The pawl signal rod 224 is provided with a pawl signal rod trigger part 2241 extending along the direction of the pawl rotation axis to perform the triggering of the pawl 22 to the pawl signal switch 222.

[0212] Technical solution 17: The self-suction back door lock device 100 according to technical solution 16, the lock tongue 21 is provided with a lock tongue wall part 219, the lock tongue wall part 219 at least includes a lock tongue wall part first section 2191 and a lock tongue wall part second section 2192, the distance from the lock tongue wall part first section 2191 to the lock tongue rotation center is less than the distance from the lock tongue wall part second section 2192 to the lock tongue center.

[0213] When the lock tongue 21 is in the full lock position, the transverse extension part 2242 of the pawl signal rod 224 abuts against the lock tongue wall part second section 2192, at this time, the pawl signal rod trigger part 2241 leaves the pawl signal switch 222 and does not trigger the pawl signal switch 222.

[0214] When the lock tongue 21 moves from the full lock position to the half-open position or the full-open position, the lock tongue wall part second section limits the transverse extension part 2242, so that the pawl signal rod 224 remains in the position of triggering the pawl signal switch 222.

[0215] In the description of the present specification, the description of the terms "one embodiment / way", "some embodiments / ways", "example", "specific example" or "some examples" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment / way or example are included in at least one embodiment / way or example of the present disclosure. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment / way or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments / ways or examples. In addition, the person skilled in the art can combine and combine the different embodiments / ways or examples described in the present specification and the features of the different embodiments / ways or examples without contradiction.

[0216] Furthermore, the terms "first", "second", etc. are used herein for descriptive purposes only and should not be construed as indicating or implying relative importance or an ordered ranking such that the technical features so designated should possess. Thus, features having a "first", "second", etc. designation can implicitly or explicitly include at least one of the features. In the description of the disclosure, the meaning of "a plurality" is at least two, for example, two, three, etc., unless otherwise specifically defined.

[0217] Those skilled in the art will understand that the above-described embodiments are merely for the purpose of clearly illustrating the present disclosure and are not intended to limit the scope of the present disclosure. Other changes or modifications can be made by those skilled in the art based on the above disclosure, and these changes or modifications are still within the scope of the present disclosure.

Claims

1. A self-closing back door lock device, characterized in that, include: An actuator mechanism capable of outputting a rotational drive action; A transmission mechanism that outputs a rotational drive action based on the rotational drive action output by the actuator mechanism; A suction mechanism that outputs a suction action based on the rotational drive action output by the transmission mechanism; as well as The locking tongue rotates to the fully locked position based on the engaging action of the engaging mechanism; The actuator mechanism includes a motor, a primary gear, and a secondary gear. The primary gear receives rotational motion output from the motor shaft and can reverse the direction of this rotational motion. The secondary gear is connected to the primary gear, and its rotation axis is parallel to that of the primary gear. The secondary gear is fan-shaped to limit the range of its rotational drive motion. The rotational drive motion of the actuator mechanism is output to the transmission mechanism via the rotation center of the secondary gear. The secondary gear includes a secondary gear shaft, and its rotation center rotates around this shaft to output rotational drive motion to the transmission mechanism. A first drive unit is disposed at the rotation center of the secondary gear. When the secondary gear rotates around its rotation shaft, the first drive unit rotates synchronously around the shaft. The self-closing door lock also includes a pawl and an electric unlocking lever; the pawl can hold the bolt in the fully locked position; the electric unlocking lever can be driven by the secondary gear to operate the pawl, causing the pawl to release the bolt; the secondary gear includes a second drive unit, which drives the electric unlocking lever; the second drive unit protrudes from the rotation center of the secondary gear. When the secondary gear rotates along the first direction, it can drive the transmission mechanism; when the secondary gear rotates along the second direction opposite to the first direction, it can drive the electric unlocking lever. The locking tongue has a locking tongue engagement shaft, and the locking tongue can be operated by an engagement lever based on the locking tongue engagement shaft to move to the fully locked position; The transmission mechanism includes a gear push rod, and the engagement mechanism includes an engagement lever and an engagement push rod. The first end of the engagement push rod and the first end of the gear push rod are coaxially arranged and both are sleeved on a common shaft. The first end of the engagement push rod and the first end of the gear push rod are connected via a push rod spring sleeved on the common shaft. The rotational motion of the gear push rod is transmitted to the engagement push rod via the push rod spring to drive the engagement push rod to rotate. The push rod spring causes the engagement push rod and the gear push rod to tend to move closer to each other, and the elastic force of the push rod spring causes the second end of the engagement push rod to abut against the force-bearing end of the engagement lever. The force-bearing end of the engagement lever has a concave shape to receive the driving force of the second end of the engagement push rod. The latch engagement shaft has an extension dimension in a direction perpendicular to the rotation plane of the latch. The engagement lever rotates around the engagement lever shaft during the engagement operation of the latch engagement shaft based on the engagement lever operating shaft. The engagement lever shaft is parallel to the engagement lever operating shaft, and both the engagement lever shaft and the engagement lever operating shaft are parallel to the latch engagement shaft.

2. The self-closing door lock device according to claim 1, characterized in that, The central angle corresponding to the sector shape of the secondary gear is greater than 90° and less than 180°.

3. The self-closing back door lock device according to claim 1, characterized in that, The first driving part of the secondary gear is fixedly connected to the transmission mechanism to drive the transmission mechanism.

4. The self-closing back door lock device according to claim 1, characterized in that, The force-receiving end of the electric unlocking lever can be driven by the second drive unit of the secondary gear.

5. The self-closing door lock device according to claim 1, characterized in that, Also includes: The electric unlocking lever signal switch is triggered and generates a trigger signal when the electric unlocking lever is driven to drive the pawl. When the electric unlocking lever returns to its initial position, the electric unlocking lever signal switch is no longer triggered by the electric unlocking lever. The electric unlocking lever has a concave area. When the electric unlocking lever is reset to its initial position, the triggered part of the electric unlocking lever signal switch is located within the concave area.

6. The self-closing back door lock device according to claim 1, characterized in that, The first driving part of the secondary gear protrudes outward from the rotation center of the secondary gear along the axial direction of the secondary gear shaft.

7. The self-closing back door lock device according to claim 6, characterized in that, The first driving part of the secondary gear is an arc-shaped protrusion, and there are two or more first driving parts of the secondary gear, which are evenly distributed around the shaft of the secondary gear.

8. The self-closing back door lock device according to claim 1, characterized in that, Also includes: The pawl signal switch is triggered when the pawl is disengaged from the bolt by the electric unlocking lever. The pawl signal switch generates a signal instructing the pawl to perform the unlocking process.

9. The self-closing back door lock device according to claim 8, characterized in that, The pawl is designed to include: A retaining part for holding the latch; and Force-receiving part for receiving the driving action of the electric unlocking lever; A concave area is formed between the retaining part and the force-receiving part to accommodate the operation of the electric unlocking lever.

10. The self-closing back door lock device according to claim 9, characterized in that, Also includes: A pawl signal rod, which is coaxially arranged with the pawl and can be synchronously driven by the electric unlocking rod; The pawl signal rod is equipped with a pawl signal rod triggering part, which extends along the rotation axis of the pawl to trigger the pawl signal switch.

11. The self-closing door lock device according to claim 10, characterized in that, The latch is provided with a latch wall, which includes at least a first section and a second section. The distance of the first section of the latch wall from the center of the latch rotation is less than the distance of the second section of the latch wall from the center of the latch. When the bolt is in the fully locked position, the lateral extension of the pawl signal rod abuts against the second section of the bolt wall. At this time, the triggering part of the pawl signal rod retracts from the pawl signal switch and does not trigger the pawl signal switch. When the latch moves from the fully locked position to the half-open or fully open position, the second section of the latch wall restricts the lateral extension, so that the pawl signal rod remains in the position to trigger the pawl signal switch.

12. A motor vehicle, characterized in that, Includes the self-closing back door lock device according to any one of claims 1 to 11.

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