Self-suction lock structure for automobile front cover

Abstract

The utility model discloses a self-suction lock structure for an automobile front cover, which comprises a ratchet wheel and a pawl, the ratchet wheel and the pawl are arranged on the same side of a base plate, the ratchet wheel and the pawl are respectively and rotatably connected with the base plate, and the ratchet wheel can be clamped with the pawl; a locking transmission assembly is mounted on the base plate, and a first active driving piece is mounted on the locking transmission assembly; a push rod is fixed to the face, facing the base plate, of the ratchet wheel, and a sliding groove is formed in the base plate. The push rod extends in the direction away from the ratchet wheel from the surface of the ratchet wheel and penetrates out of the sliding groove. A second active driving piece is mounted on the pawl, and the second active driving piece can drive the pawl to rotate in the unlocking direction; a manual unlocking transmission assembly is further installed on the base plate, a manual driving piece is installed on the manual unlocking transmission assembly, a coupling end is arranged on the pawl, and the manual unlocking transmission assembly can be coupled with the coupling end.

Description

Technical Field

[0001] The utility model relates to the field of automobiles, in particular to a self-priming lock structure for a front cover of an automobile. Background Art

[0002] The car hood lock in the prior art is generally divided into two parts, a lock body and a lock catch. The lock body is installed on the edge of the hood, and a lock catch is provided corresponding to the lock body. The lock catch is generally selected to be a square lock catch formed by bending a metal round bar, and the lock catch is generally selected to be installed on the edge of the car body.

[0003] In the prior art, when the front hood of a car needs to be closed, it is generally necessary to use manual operation to close it, or the closing operation needs to be repeated, which causes inconvenience. Therefore, a series of electric locks have appeared one after another to solve the shortcomings caused by manual operation.

[0004] However, the existing electric locks only have an electric opening function, which is a single function and cannot meet the demand for automatic electric closing of the electric hood system. Or although they have a self-priming function, the self-priming locks are complex in structure, expensive, large in size, poor in stability, and have a high failure rate.

[0005] Usually, electric self-priming locks are not equipped with a safe disengagement mechanism. In the event of motor failure or power outage, the front engine cover cannot be opened and needs to be dismantled. Utility Model Content

[0006] The utility model aims to provide a self-priming lock structure for the front hood of an automobile, which adopts a multi-link mechanism and is respectively provided with two transmission chains for realizing self-priming and safe disengagement and unlocking, that is, it can solve the problem that the existing electric lock does not have the self-priming locking or unlocking function, and at the same time can solve the technical problem that the front hood lock is difficult to safely disengage and unlock in the event of motor failure or power failure, resulting in the front hood being difficult to open.

[0007] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0008] A self-priming lock structure for a front cover of an automobile comprises a ratchet and a pawl, wherein the ratchet and the pawl are mounted on the same side of a base plate, the ratchet and the pawl are rotatably connected to the base plate respectively, and the ratchet can be engaged with the pawl;

[0009] A locking transmission assembly is mounted on the base plate, and a first active driving member is mounted on the locking transmission assembly, wherein the first active driving member can drive the locking transmission assembly to realize force transmission;

[0010] A push rod is fixed on the side of the ratchet wheel facing the base plate, and a slide groove is arranged on the base plate; the push rod extends from the ratchet wheel surface in a direction away from the ratchet wheel and passes through the slide groove; the locking transmission assembly can apply force to the free end of the push rod passing through the slide groove, push the push rod to slide in the slide groove, and then drive the ratchet wheel to rotate in the locking direction;

[0011] A second active driving member is mounted on the pawl, and the second active driving member can drive the pawl to rotate in an unlocking direction, thereby releasing the ratchet wheel;

[0012] A manual unlocking transmission assembly is also installed on the base plate, and a manual driving member is installed on the manual unlocking transmission assembly. A coupling end is provided on the pawl, and the manual unlocking transmission assembly can be coupled with the coupling end. When the manual driving member is manually turned or pulled, the manual unlocking transmission assembly can abut against the coupling end and push the coupling end to move, and then push the pawl to rotate in the unlocking direction, thereby releasing the ratchet.

[0013] The working principle of the utility model is: when self-priming locking is required, the first active driving member enables the locking transmission assembly to realize force transmission, and then pushes the push rod, and then drives the ratchet to rotate in the locking direction, so that the pawl and the ratchet are engaged, to realize self-priming locking; when unlocking, the second active driving member disengages the pawl from the ratchet, releases the ratchet, and the ratchet rotates in the unlocking direction to realize unlocking; when the motor fails or the power is off, manually toggling or pulling the manual driving member can enable the manual unlocking transmission assembly to realize force transmission, and abut against the coupling end, push the coupling end to move, and then push the pawl to rotate in the unlocking direction, thereby releasing the ratchet and realizing manual unlocking.

[0014] As a specific implementation scheme of the ratchet and pawl clamping, a first clamping portion is provided on the side edge of the pawl, and a second clamping portion is provided on the corresponding side edge of the ratchet. The first clamping portion can be clamped with the second clamping portion, and the first clamping portion can prevent the rotation of the ratchet by applying resistance to the second clamping portion.

[0015] As a preferred embodiment of the second locking portion, the second locking portion includes a fully locked locking portion, a half locked locking portion and an unlocked locking portion. When the first locking portion is respectively engaged with the fully locked locking portion, the half locked locking portion and the unlocked locking portion, the ratchet is respectively in a fully locked position, a half locked position and an unlocked position.

[0016] When self-priming locking is required, the first active driving member enables the locking transmission assembly to realize force transmission, thereby pushing the push rod, thereby driving the ratchet to rotate in the locking direction, so that the first clamping portion of the edge of the pawl is clamped with the full-locking clamping portion of the ratchet, so that the ratchet is in the full-locking position, realizing self-priming locking; when half-unlocking, the second active driving member causes the pawl to rotate and disengage from the ratchet, releasing the ratchet, and the ratchet rotates in the unlocking direction. When the ratchet reaches the half-unlocking position, the second active driving member drives the pawl to reset, so that the first clamping portion of the edge of the pawl is clamped with the half-locking clamping portion of the ratchet, realizing half-unlocking; when When fully unlocked, when the ratchet is in the semi-unlocked position, the second active driving member continues to drive the pawl to rotate and disengage from the ratchet, releasing the ratchet, and the ratchet rotates in the unlocking direction and finally rotates to the fully unlocked position to achieve full unlocking. At this time, the first clamping portion of the pawl edge is engaged with the unlocking clamping portion of the ratchet; when the motor fails or the power is off, manually toggling or pulling the manual driving member can enable the manual unlocking transmission assembly to achieve force transmission, and abut against the coupling end, pushing the coupling end to move, thereby driving the first clamping portion of the pawl to rotate in the direction away from the ratchet, releasing the ratchet, and achieving manual unlocking.

[0017] As a preferred scheme of the locking transmission assembly, the locking transmission assembly includes a first connecting rod, a second connecting rod, a third connecting rod, a fourth connecting rod and a tenth connecting rod; one end of the first cable is installed on one end of the first connecting rod; the first connecting rod and the tenth connecting rod are respectively rotatably connected to a base plate; the other end of the first connecting rod is rotatably connected to one end of the second connecting rod, the other end of the second connecting rod is rotatably connected to one end of the third connecting rod, the other end of the third connecting rod is rotatably connected to one end of the fourth connecting rod, and the other end of the fourth connecting rod is rotatably connected to the base plate; the side surface of the rotational connection between the third connecting rod and the second connecting rod has a pushing surface, and when the first connecting rod drives the second connecting rod and the third connecting rod to move, the pushing surface can push the tenth connecting rod to rotate, and when the tenth connecting rod rotates, it can push the push rod to slide in the slide groove, thereby pushing the ratchet to rotate in the locking direction.

[0018] As a preferred solution of the fourth connecting rod structure, a third limiting member is fixed to the fourth connecting rod for limiting the first connecting rod when resetting, and serving as a force point for the fifth resetting spring.

[0019] As a preferred solution of the pawl structure, the pawl has an engaging end, the engaging end is rotatably connected to a fifth connecting rod, a first limiting member is fixed to the engaging end, and the first limiting member can limit the position of the fifth connecting rod; an engaging member is fixed to the fifth connecting rod, which can engage with the unlocking clamping portion when the ratchet rotates, thereby preventing the ratchet from resetting and allowing the ratchet to stay in the semi-locked position.

[0020] As a preferred scheme of the manual unlocking transmission assembly, the manual unlocking transmission assembly includes a sixth connecting rod, a seventh connecting rod, an eighth connecting rod and a ninth connecting rod; the ninth connecting rod is rotatably connected to the base plate, and a manual driving member is installed on the ninth connecting rod, and applying a pulling force to the manual driving member can drive the ninth connecting rod to rotate; one end of the sixth connecting rod is rotatably connected to the fourth connecting rod, and the other end of the sixth connecting rod is movably connected to one end of the seventh connecting rod and the ninth connecting rod at the same time through the seventh rotating shaft; the other end of the seventh connecting rod is connected to one end of the eighth connecting rod through a first connecting column, and the seventh connecting rod and the eighth connecting rod are respectively located on both sides of the base plate; the two ends of the first connecting column are fixedly connected to the other end of the seventh connecting rod and one end of the eighth connecting rod respectively; a first guide groove is provided on the base plate, and the first connecting column The column passes through the first guide groove and can slide in the first guide groove; the other end of the eighth connecting rod is also fixed with one end of the second connecting column, and correspondingly, a second guide groove is opened on the base plate, and the other end of the second connecting column is slidably connected with the second guide groove, and can slide along the second guide groove under the drive of the eighth connecting rod; the coupling end is arranged on the fifth connecting rod, and the coupling end is on the same side as the eighth connecting rod, and is located between the first connecting column and the second connecting column; when the ninth connecting rod rotates, it can drive the sixth connecting rod to rotate, and the seventh connecting rod and the eighth connecting rod to move linearly along the first guide groove and the second guide groove, so that the second connecting column can abut against the coupling end and drive the coupling end to move, thereby driving the fifth connecting rod to rotate, and then pushing the pawl to rotate.

[0021] As a preferred solution of the manual driving member, the manual driving member is a structural form selected from the group consisting of a pull cable, a pull rod, a lever, and a lever handle.

[0022] As a preferred embodiment of the first active driving member, the first active driving member includes a first cable, one end of which is installed at the driving initial end of the locking transmission assembly, and the other end of the first cable is installed with a motor, and the operation of the motor can pull or release the first cable; when the motor pulls the first cable, the locking transmission assembly can realize force transmission, and the force is transferred from the driving initial end to the driving end of the locking transmission assembly, thereby driving the driving end to move.

[0023] As a preferred embodiment of the second active driving member, the second active driving member includes a second cable, one end of the second cable is installed on the pawl, and the other end of the second cable is installed with a motor, and the operation of the motor can pull or release the second cable; when the motor pulls the second cable, the pawl can be rotated in the unlocking direction and release the ratchet.

[0024] The technical solution of the utility model has the following beneficial effects: compared with the prior art, the utility model is provided with two transmission chains for realizing self-priming and safe disengagement and unlocking respectively, which can solve the problem that the existing electric lock does not have the self-priming locking or unlocking function, and at the same time can solve the technical problem that in the event of motor failure or power failure, the front cover lock is difficult to safely disengage and unlock, resulting in the front engine cover being difficult to open; in addition, a multi-link structure is adopted, the parts structure is simple, easy to process and manufacture, and the cost is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model will be further described in detail below with reference to the accompanying drawings, in which:

[0026] Figure 1 The self-priming lock structure of the utility model is shown in FIG. Figure 1 .

[0027] Figure 2 The self-priming lock structure of the utility model is shown in FIG. Figure 2 .

[0028] Figure 3 The following is a schematic diagram of the local structure of the self-priming lock of the utility model. Figure 1 .

[0029] Figure 4 The following is a schematic diagram of the local structure of the self-priming lock of the utility model. Figure 2 .

[0030] Figure 5 The following is a schematic diagram of the local structure of the self-priming lock of the utility model. Figure 3 .

[0031] Description of reference numerals: 100, pawl; 101, pawl shaft; 102, first return spring; 103, first clamping portion; 200, ratchet; 201, ratchet shaft; 202, second return spring; 203, push rod; 204, full-lock clamping portion; 205, half-lock clamping portion; 206, unlocking clamping portion; 301, first connecting rod; 302, third connecting rod; 303, second connecting rod; 304, fourth connecting rod; 305, fifth connecting rod; 306, sixth connecting rod; 307, seventh connecting rod; 308, eighth connecting rod; 309, ninth connecting rod; 310, tenth connecting rod; 311, first rotating shaft; 312, second rotating shaft; 313, third rotating shaft; 314, fourth rotating shaft; 315, fifth rotating shaft; 316, sixth rotating shaft; 317, seventh rotating shaft; 318, eighth rotating shaft; 319, ninth rotating shaft; 320, tenth rotating shaft; 321, first limiting member; 322, engaging member; 323, first connecting column; 324, second connecting column; 325, second limiting member; 326, third limiting member; 327, third return spring; 328, fourth return spring; 329, fifth return spring; 330, coupling end; 401, first cable; 402, second cable; 403, manual driving member; 500, base plate; 501, first guide groove; 502, second guide groove; 503, slide groove. DETAILED DESCRIPTION

[0032] In order to better understand the purpose, structure and function of the present invention, the following is a further detailed description of a self-priming lock structure for a front cover of a car in conjunction with the accompanying drawings.

[0033] The utility model can be applied to the electric self-priming locking or unlocking of the front hood of an automobile. The utility model adopts a multi-link mechanism and is respectively provided with two transmission chains for realizing self-priming and safe disengagement and unlocking, which can solve the problem that the existing electric lock does not have the self-priming locking or unlocking function, and can also solve the technical problem that the front hood lock is difficult to safely disengage and unlock in the case of motor failure or power failure, resulting in the difficulty in opening the front hood.

[0034] Example 1, based on the technical problems solved above, please refer to Figure 1 The self-priming lock structure for the front cover of an automobile disclosed in this embodiment includes a ratchet 200 and a pawl 100. The ratchet 200 and the pawl 100 are installed on the same side of a base plate 500. The ratchet 200 and the pawl 100 are rotatably connected to the base plate 500 respectively, and the ratchet 200 can be engaged with the pawl 100.

[0035] The base plate 500 is provided with a locking transmission assembly, and the locking transmission assembly is provided with a first active driving member, and the first active driving member can drive the locking transmission assembly to realize force transmission;

[0036] See also Figure 2A push rod 203 is fixed on the side of the ratchet 200 facing the base plate 500, and a slide groove 503 is provided on the base plate 500; the push rod 203 extends from the surface of the ratchet 200 in a direction away from the ratchet 200 and passes through the slide groove 503; the locking transmission assembly can apply force to the free end of the push rod 203 passing through the slide groove 503, push the push rod 203 to slide in the slide groove 503, and then drive the ratchet 200 to rotate in the locking direction;

[0037] The pawl 100 is provided with a second active driving member, and the second active driving member can drive the pawl 100 to rotate in an unlocking direction, thereby releasing the ratchet wheel 200;

[0038] See also Figure 3 A manual unlocking transmission assembly is also installed on the substrate 500, and a manual driving member 403 is installed on the manual unlocking transmission assembly. A coupling end 330 is provided on the pawl 100, and the manual unlocking transmission assembly can be coupled with the coupling end 330. When the manual driving member 403 is manually turned or pulled, the manual unlocking transmission assembly can abut against the coupling end 330 and push the coupling end 330 to move, and then push the pawl 100 to rotate in the unlocking direction, thereby releasing the ratchet 200.

[0039] The working principle of this embodiment is: when self-priming locking is required, the first active driving member enables the locking transmission assembly to realize force transmission, thereby pushing the push rod 203, thereby driving the ratchet 200 to rotate in the locking direction, so that the pawl 100 is engaged with the ratchet 200 to realize self-priming locking; when unlocking, the second active driving member disengages the pawl 100 from the ratchet 200, releases the ratchet 200, and the ratchet 200 rotates in the unlocking direction to realize unlocking; when the motor fails or the power is off, manually pulling or pulling the manual driving member 403 can enable the manual unlocking transmission assembly to realize force transmission, and abut against the coupling end 330, pushing the coupling end 330 to move, and then further pushing the pawl 100 to rotate in the unlocking direction, thereby releasing the ratchet 200 to realize manual unlocking.

[0040] As a specific implementation scheme of the ratchet 200 and the pawl 100, please refer to Figure 1 A first clamping portion 103 is provided on the side edge of the pawl 100, and a second clamping portion is provided on the corresponding side edge of the ratchet 200. The first clamping portion 103 can be clamped with the second clamping portion, and the first clamping portion 103 can prevent the rotation of the ratchet 200 by applying resistance to the second clamping portion.

[0041] See also Figure 1As a preferred embodiment of the second clamping portion, the second clamping portion includes a fully locked clamping portion 204, a half locked clamping portion 205 and an unlocked clamping portion 206. When the first clamping portion 103 is respectively engaged with the fully locked clamping portion 204, the half locked clamping portion 205 and the unlocked clamping portion 206, the ratchet 200 is respectively in a fully locked position, a half locked position and an unlocked position.

[0042] When self-priming locking is required, the first active driving member enables the locking transmission assembly to realize force transmission, thereby pushing the push rod 203, thereby driving the ratchet 200 to rotate in the locking direction, so that the first clamping portion 103 on the edge of the pawl 100 is clamped with the full-locking clamping portion 204 of the ratchet 200, so that the ratchet 200 is in the full-locking position, realizing self-priming locking; when half-unlocking, the second active driving member causes the pawl 100 to rotate and disengage from the ratchet 200, releasing the ratchet 200, and the ratchet 200 rotates in the unlocking direction. When the ratchet 200 reaches the half-unlocking position, the second active driving member drives the pawl 100 to reset, so that the first clamping portion 103 on the edge of the pawl 100 is clamped with the half-locking clamping portion 205 of the ratchet 200, realizing half-unlocking; When fully unlocked, when the ratchet 200 is in the semi-unlocked position, the second active driving member continues to drive the pawl 100 to rotate and disengage from the ratchet 200, releasing the ratchet 200, and the ratchet 200 rotates in the unlocking direction, and finally rotates to the fully unlocked position to achieve full unlocking. At this time, the first clamping portion 103 on the edge of the pawl 100 is clamped with the unlocking clamping portion 206 of the ratchet 200; when the motor fails or the power is off, manually pulling or pulling the manual driving member 403 can enable the manual unlocking transmission assembly to achieve force transmission, and abut against the coupling end 330, pushing the coupling end 330 to move, thereby driving the first clamping portion 103 of the pawl 100 to rotate in the direction away from the ratchet 200, releasing the ratchet 200, and achieving manual unlocking.

[0043] As a specific embodiment of the ratchet 200 and the pawl 100 being rotatably connected to the base plate 500, please refer to Figure 1 The base plate 500 is respectively fixed with a ratchet 200 shaft and a pawl 100 shaft; the ratchet 200 can rotate around the ratchet 200 shaft, and a second return spring 202 is sleeved on the ratchet 200 shaft for returning the ratchet 200 to a reset position; the pawl 100 is provided with a pawl 100 shaft, and the pawl 100 can rotate around the pawl 100 shaft, and a first return spring 102 is sleeved on the pawl 100 shaft for returning the pawl 100 to a reset position.

[0044] Specifically, the reset position of the ratchet 200 is the position of the ratchet 200 when the ratchet 200 is in the unlocked position, and at this time the reset spring of the ratchet 200 does not have elastic deformation; the reset position of the pawl 100 is the initial position of the pawl 100, that is, the position of the pawl 100 when the first reset spring 102 does not have elastic deformation.

[0045] As a preferred solution for the locking drive assembly, please refer to Figure 1 and Figure 2 The locking transmission assembly includes a first connecting rod 301, a second connecting rod 302, a third connecting rod 303, a fourth connecting rod 304 and a tenth connecting rod 310; one end of the first cable 401 is installed on one end of the first connecting rod 301; the first connecting rod 301 and the tenth connecting rod 310 are respectively rotatably connected to the base plate 500;

[0046] The other end of the first connecting rod 301 is rotatably connected to one end of the second connecting rod 302, the other end of the second connecting rod 302 is rotatably connected to one end of the third connecting rod 303, the other end of the third connecting rod 303 is rotatably connected to one end of the fourth connecting rod 304, and the other end of the fourth connecting rod 304 is rotatably connected to the base plate 500;

[0047] The side surface of the rotational connection between the third connecting rod 303 and the second connecting rod 302 has a pushing surface. When the first connecting rod 301 drives the second connecting rod 302 and the third connecting rod 303 to move, the pushing surface can push the tenth connecting rod 310 to rotate. When the tenth connecting rod 310 rotates, it can push the push rod 203 to slide in the slide groove 503, thereby pushing the ratchet 200 to rotate in the locking direction.

[0048] As a further specific implementation scheme of the locking transmission assembly, please refer to Figure 1 and Figure 2 The first rotating shaft 311 and the eighth rotating shaft 318 are fixed on the base plate 500, the first connecting rod 301 is rotatably connected to the first rotating shaft 311, the tenth connecting rod 310 is rotatably connected to the eighth rotating shaft 318, and a third reset spring 327 is installed between the first connecting rod 301 and the base plate 500 to assist the first connecting rod 301 in resetting after rotation;

[0049] The first connecting rod 301 is rotatably connected to the second connecting rod 302 via the second rotating shaft 312, the second connecting rod 302 is rotatably connected to the third connecting rod 303 via the third rotating shaft 313, and the third connecting rod 303 is rotatably connected to the fourth connecting rod 304 via the fourth rotating shaft 314;

[0050] See also Figure 4 The fourth connecting rod 304 is rotatably connected to the base plate 500 through the tenth rotating shaft 320. The tenth rotating shaft 320 is fixed on the base plate 500. A fifth reset spring 329 is also installed on the tenth rotating shaft 320 for driving each connecting rod to return to the reset position after the ratchet wheel 200 is driven to rotate.

[0051] As a preferred solution for the structure of the fourth connecting rod 304, please refer to Figure 2 and Figure 4A third limiting member 326 is also fixed on the fourth connecting rod 304 for limiting the first connecting rod 301 when it is reset, and serving as a force point for the fifth reset spring 329 .

[0052] As a preferred solution of the structure of the pawl 100, please refer to Figure 1 The pawl 100 has an engaging end, and the fifth connecting rod 305 is rotatably connected to the engaging end. A first limiting member 321 is fixed to the engaging end, and the first limiting member 321 can limit the position of the fifth connecting rod 305; an engaging member 322 is fixed to the fifth connecting rod 305, which can engage with the unlocking clamping portion 206 when the ratchet 200 rotates, thereby preventing the ratchet 200 from resetting and allowing the ratchet 200 to stay in the semi-locked position.

[0053] For details, please refer to Figure 1 A fifth rotating shaft 315 is fixed on the meshing end, and the fifth connecting rod 305 is rotatably connected to the pawl 100 via the fifth rotating shaft 315 .

[0054] As a preferred option for manually unlocking the transmission assembly, see Figure 1 , Figure 2 , Figure 3 and Figure 5 , the manual unlocking transmission assembly includes a sixth connecting rod 306, a seventh connecting rod 307, an eighth connecting rod 308, and a ninth connecting rod 309;

[0055] The ninth connecting rod 309 is rotatably connected to the base plate 500, and the manual driving member 403 is installed on the ninth connecting rod 309. Applying a pulling force to the manual driving member 403 can drive the ninth connecting rod 309 to rotate; one end of the sixth connecting rod 306 is rotatably connected to the fourth connecting rod 304, and the other end of the sixth connecting rod 306 is movably connected to one end of the seventh connecting rod 307 and the ninth connecting rod 309 through the seventh rotating shaft 317; the other end of the seventh connecting rod 307 is connected to one end of the eighth connecting rod 308 through the first connecting column 323, and the seventh connecting rod 307 and the eighth connecting rod 308 are respectively located on both sides of the base plate 500;

[0056] See also Figure 3 and Figure 5 , the two ends of the first connecting column 323 are fixedly connected to the other end of the seventh connecting rod 307 and one end of the eighth connecting rod 308 respectively; a first guide groove 501 is provided on the base plate 500, and the first connecting column 323 passes through the first guide groove 501 and can slide in the first guide groove 501; one end of the second connecting column 324 is also fixed to the other end of the eighth connecting rod 308, and correspondingly, a second guide groove 502 is provided on the base plate 500, and the other end of the second connecting column 324 is slidably connected to the second guide groove 502, and can slide along the second guide groove 502 driven by the eighth connecting rod 308;

[0057] See also Figure 3 The coupling end 330 is arranged on the fifth connecting rod 305, and the coupling end 330 is on the same side as the eighth connecting rod 308, and is located between the first connecting column 323 and the second connecting column 324; when the ninth connecting rod 309 rotates, it can drive the sixth connecting rod 306 to rotate, and the seventh connecting rod 307 and the eighth connecting rod 308 to move linearly along the first guide groove 501 and the second guide groove 502, so that the second connecting column 324 can abut against the coupling end 330 and drive the coupling end 330 to move, thereby driving the fifth connecting rod 305 to rotate, and then pushing the pawl 100 to rotate.

[0058] As a preferred solution of the manual driving member 403, the manual driving member 403 is a structural form selected from the group consisting of a pull cable, a pull rod, a lever, and a handle.

[0059] As a preferred solution for the connection between the ninth connecting rod 309 and the sixth connecting rod 306, the seventh connecting rod 307 and the base plate 500, please refer to Figure 2 The seventh rotating shaft 317 is fixed on the ninth connecting rod 309 , and the sixth connecting rod 306 and the seventh connecting rod 307 can rotate around the seventh rotating shaft 317 respectively; the ninth connecting rod 309 is rotatably connected to the base plate 500 through the sixth rotating shaft 316 , and the sixth rotating shaft 316 is fixed on the base plate 500 .

[0060] As a preferred solution of the reset structure of the ninth connecting rod 309, please refer to Figure 2 A fourth reset spring 328 is installed between the ninth connecting rod 309 and the base plate 500, which is used to assist the ninth connecting rod 309 to reset after rotation; a second limiting member 325 is fixed to the side of the ninth connecting rod 309 facing the base plate 500, and correspondingly, a limiting hole is opened on the base plate 500, and the second limiting member 325 extends through the limiting hole to the side of the pawl 100, which is used to limit the rotation of the ninth connecting rod 309.

[0061] As a preferred solution for the first active driving member, please refer to Figure 1 and Figure 2 The first active driving member includes a first cable 401, one end of which is installed at the driving initial end of the locking transmission assembly, and the other end of the first cable 401 is installed with a motor, and the operation of the motor can pull or release the first cable 401; when the motor pulls the first cable 401, the locking transmission assembly can realize force transmission, and transfer the force from the driving initial end to the driving end of the locking transmission assembly, thereby driving the driving end to move.

[0062] As a preferred solution for the second active drive member, please refer to Figure 1 and Figure 2The second active driving member includes a second cable 402, one end of which is installed on the pawl 100, and the other end of the second cable 402 is installed with a motor, and the motor can pull or release the second cable 402 when it is running; when the motor pulls the second cable 402, the pawl 100 can be rotated in the unlocking direction and release the ratchet 200.

[0063] The working process of the utility model is as follows: in actual application, the first cable and the second cable are respectively equipped with motors, and the motors are used to pull the first cable and the second cable to realize the electric locking self-priming and unlocking process.

[0064] When the electric self-priming is locked, the front hood enters the half-locked position, triggering the half-lock signal, the motor is powered on to pull the first cable 401, the first connecting rod 301 rotates, driving the third connecting rod 303 and the second connecting rod 302 to rotate, the third connecting rod 303 and the second connecting rod 302 simultaneously push the tenth connecting rod 310 to rotate, the tenth connecting rod 310 pushes the push rod 203, the push rod 203 pushes the ratchet 200 to rotate in the locking direction, and the front hood is sent to the full-locked position, completing the electric self-priming. Then the motor reverses, and the self-priming transmission chain mechanism returns to the initial position under the action of the spring force.

[0065] When unlocking electrically, the motor pulls the second cable 402, driving the pawl 100 to rotate in the unlocking direction. During the rotation of the ratchet 200, the first meshing portion 203 meshes with the meshing member 322 of the fifth connecting rod 305. The motor reverses to move the pawl in the direction of the ratchet to the initial position, and meshes with the second meshing portion 204 of the ratchet, ensuring that the front hood is in a half-locked position after the first unlocking. The motor drives the second cable 402 again, driving the pawl 100 assembly to rotate in the unlocking direction, and the ratchet 200 is disengaged from the pawl 100, completing the electric unlocking to the fully open position, and the front hood can be opened. Then the motor reverses to return to the initial position, and the pawl 100 returns to the initial position under the action of the spring.

[0066] When the first electric unlocking process encounters power failure or motor failure, it is necessary to manually disengage the unlocking method to open the door. The specific operation process is to manually pull the manual drive member 403, thereby driving the ninth connecting rod 309 to rotate, driving the seventh connecting rod 307 and the first connecting column 323, the eighth connecting rod 308 and the second connecting column 324 to move along the first guide groove 501 and the second guide groove 502 of the base plate 500, and the second connecting column 324 abuts against the coupling end 330 of the fifth connecting rod, and the coupling end 330 drives the fifth connecting rod 305 to rotate, so that the meshing member 322 on the fifth connecting rod 305 rotates out of meshing with the ratchet 200, and the ratchet 200 is unlocked to full opening under the action of the spring force. The front hood can be opened.

[0067] When power failure or motor failure occurs during the self-priming process, the door needs to be opened manually by disengaging and unlocking. The manual drive member 403 pulls the ninth connecting rod 309 to rotate. Under the coupling action of the sixth connecting rod 306, the third connecting rod 303, the second connecting rod 302 and the fourth connecting rod 304 rotate around their respective pins, so that the third connecting rod 303 and the second connecting rod 302 retreat. The tenth connecting rod 310 exits the motion area of ​​the push rod 203 (ratchet 200) under the action of the spring; at the same time, the ninth connecting rod 309 also drives the sixth rotating shaft 316 to rotate and the second connecting column 324 to move horizontally. The second connecting column 324 drives the fifth connecting rod 305 and the meshing member 322 to rotate, avoiding the motion area of ​​the first meshing portion 203 of the ratchet 200. The sixth rotating shaft 316 drives the pawl 100 assembly to move in the unlocking direction and disengage from the ratchet. At this time, the ratchet can be freely unlocked to the fully locked position.

[0068] The self-priming lock structure for the front cover of a car disclosed by the utility model has the following technical effects: compared with the existing technology, the utility model is respectively provided with two transmission chains for realizing self-priming and safe disengagement and unlocking, which can solve the problem that the existing electric lock does not have the self-priming locking or unlocking function, and at the same time can solve the technical problem that the front cover lock is difficult to safely disengage and unlock in the event of motor failure or power failure, resulting in difficulty in opening the front engine hood; in addition, a multi-link structure is adopted, the parts structure is simple, easy to process and manufacture, and the cost is reduced.

[0069] It can be understood that the present invention is described by some specific embodiments / embodiments, and those skilled in the art are aware that various changes or equivalent substitutions can be made to these features and specific embodiments / embodiments without departing from the spirit and scope of the present invention. Under the guidance of the present invention, these features and specific embodiments / embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of the present invention. The specific embodiments / embodiments described in the present invention are part of the specific embodiments / embodiments of the present invention, rather than all of the specific embodiments / embodiments. The components of the specific embodiments / embodiments of the present invention generally described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the specific embodiments / embodiments of the present invention provided in the drawings is not intended to limit the scope of the utility model claimed for protection, but only represents the selected specific embodiments / embodiments of the present invention. Therefore, the present invention is not limited by the specific embodiments / embodiments disclosed herein, and all other specific embodiments / embodiments obtained by ordinary technicians in the field without creative work based on the specific embodiments / embodiments in the present invention belong to the scope of protection of the present invention.

Claims

1. A self-priming lock structure for a car hood, characterized in that: It comprises a ratchet wheel and a pawl, the ratchet wheel and the pawl are installed on the same side of the base plate, the ratchet wheel and the pawl are respectively rotatably connected to the base plate, and the ratchet wheel can be engaged with the pawl; A locking transmission assembly is mounted on the base plate, and a first active driving member is mounted on the locking transmission assembly, wherein the first active driving member can drive the locking transmission assembly to realize force transmission; A push rod is fixed on the side of the ratchet wheel facing the base plate, and a slide groove is arranged on the base plate; the push rod extends from the ratchet wheel surface in a direction away from the ratchet wheel and passes through the slide groove; the locking transmission assembly can apply force to the free end of the push rod passing through the slide groove, push the push rod to slide in the slide groove, and then drive the ratchet wheel to rotate in the locking direction; A second active driving member is mounted on the pawl, and the second active driving member can drive the pawl to rotate in an unlocking direction, thereby releasing the ratchet wheel; A manual unlocking transmission assembly is also installed on the base plate, and a manual driving member is installed on the manual unlocking transmission assembly. A coupling end is provided on the pawl, and the manual unlocking transmission assembly can be coupled with the coupling end. When the manual driving member is manually turned or pulled, the manual unlocking transmission assembly can abut against the coupling end and push the coupling end to move, and then push the pawl to rotate in the unlocking direction, thereby releasing the ratchet.

2. The self-priming lock structure for the front cover of an automobile according to claim 1, characterized in that: The pawl side edge is provided with a first clamping portion, and the corresponding ratchet side edge is provided with a second clamping portion. The first clamping portion can be clamped with the second clamping portion, and the first clamping portion can prevent the rotation of the ratchet by applying resistance to the second clamping portion.

3. The self-priming lock structure for the front cover of an automobile according to claim 2, characterized in that: The second clamping part includes a fully locked clamping part, a half locked clamping part and an unlocked clamping part. When the first clamping part is respectively engaged with the fully locked clamping part, the half locked clamping part and the unlocked clamping part, the ratchet is respectively in a fully locked position, a half locked position and an unlocked position.

4. The self-priming lock structure for the front cover of an automobile according to claim 1, characterized in that: The locking transmission assembly includes a first connecting rod, a second connecting rod, a third connecting rod, a fourth connecting rod and a tenth connecting rod; one end of the first cable is installed on one end of the first connecting rod; the first connecting rod and the tenth connecting rod are respectively rotatably connected to a base plate; the other end of the first connecting rod is rotatably connected to one end of the second connecting rod, the other end of the second connecting rod is rotatably connected to one end of the third connecting rod, the other end of the third connecting rod is rotatably connected to one end of the fourth connecting rod, and the other end of the fourth connecting rod is rotatably connected to the base plate; the side surface of the rotational connection between the third connecting rod and the second connecting rod has a pushing surface, and when the first connecting rod drives the second connecting rod and the third connecting rod to move, the pushing surface can push the tenth connecting rod to rotate, and when the tenth connecting rod rotates, it can push the push rod to slide in the slide groove, thereby pushing the ratchet to rotate in the locking direction.

5. The self-priming lock structure for the front cover of an automobile according to claim 4, characterized in that: The fourth connecting rod is also fixed with a third limiting member for limiting the first connecting rod when it is reset, and serving as a force point for the fifth reset spring.

6. The self-priming lock structure for the front cover of an automobile according to claim 1, characterized in that: The pawl has an engaging end, and the engaging end is rotatably connected to a fifth connecting rod. A first limiting member is fixed to the engaging end, and the first limiting member can limit the position of the fifth connecting rod; an engaging member is fixed to the fifth connecting rod, which can engage with the unlocking clamping portion when the ratchet rotates, thereby preventing the ratchet from resetting and allowing the ratchet to stay in a semi-locked position.

7. The self-priming lock structure for the front cover of an automobile according to claim 6, characterized in that: The manual unlocking transmission assembly includes a sixth connecting rod, a seventh connecting rod, an eighth connecting rod and a ninth connecting rod; the ninth connecting rod is rotatably connected to the base plate, and a manual driving member is installed on the ninth connecting rod, and applying a pulling force to the manual driving member can drive the ninth connecting rod to rotate; one end of the sixth connecting rod is rotatably connected to the fourth connecting rod, and the other end of the sixth connecting rod is movably connected to one end of the seventh connecting rod and the ninth connecting rod at the same time through the seventh rotating shaft; the other end of the seventh connecting rod is connected to one end of the eighth connecting rod through the first connecting column, and the seventh connecting rod and the eighth connecting rod are respectively located on both sides of the base plate; The two ends of the first connecting column are respectively fixedly connected to the other end of the seventh connecting rod and one end of the eighth connecting rod; a first guide groove is provided on the base plate, and the first connecting column passes through the first guide groove and can slide in the first guide groove; one end of the second connecting column is also fixed to the other end of the eighth connecting rod, and correspondingly, a second guide groove is provided on the base plate, and the other end of the second connecting column is slidably connected to the second guide groove and can slide along the second guide groove driven by the eighth connecting rod; The coupling end is arranged on the fifth connecting rod, and the coupling end is on the same side as the eighth connecting rod and is located between the first connecting column and the second connecting column; when the ninth connecting rod rotates, it can drive the sixth connecting rod to rotate, and the seventh connecting rod and the eighth connecting rod to move linearly along the first guide groove and the second guide groove, so that the second connecting column can abut against the coupling end and drive the coupling end to move, thereby driving the fifth connecting rod to rotate, and then pushing the pawl to rotate.

8. The self-priming lock structure for the front cover of an automobile according to claim 1, characterized in that: The manual drive member is a structural form selected from the group consisting of a pull cable, a pull rod, a shifting rod, and a shifting handle.

9. The self-priming lock structure for the front cover of an automobile according to claim 1, characterized in that: The first active driving member includes a first cable, one end of which is installed at the driving initial end of the locking transmission assembly, and the other end of the first cable is installed with a motor, and the operation of the motor can pull or release the first cable; when the motor pulls the first cable, the locking transmission assembly can realize force transmission, and transfer the force from the driving initial end to the driving end of the locking transmission assembly, driving the driving end to move.

10. The self-priming lock structure for the front cover of an automobile according to claim 1, characterized in that: The second active driving member includes a second cable, one end of which is mounted on the pawl, and the other end of the second cable is mounted with a motor, and the motor can pull or release the second cable when it is running; when the motor pulls the second cable, the pawl can be rotated in an unlocking direction and the ratchet can be released.

Images