Double zipper with safety buckle for vehicle bonnet
By incorporating springs of varying strengths into the double zipper lock on the vehicle's hood, the lock is ensured to remain closed only when the pawl is not in operation. This solves the problem of pawl springs being prone to damage and improves the lock's safety and reliability.
Patent Information
- Application Number
- CN202510954806.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Priority Date
- 2024-07-17
- Filing Date
- 2025-07-11
- Publication Date
- 2026-01-20
AI Technical Summary
The pawl springs of the existing vehicle hood double zipper locks are prone to damage or popping out, causing the locks to malfunction and posing a safety hazard.
A double-pull lock for a vehicle hood was designed. By setting different spring forces on the pawl and the safety buckle, the pawl keeps the lock closed only when the spring is not in operation, ensuring that the hood remains closed even if the pawl spring fails.
This improves the safety and reliability of the lock, preventing it from opening accidentally when the pawl spring fails, thus ensuring safety during vehicle operation.
Smart Images
Figure CN121363350A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present invention relates to a double pull lock with safety catch for a vehicle hood. BACKGROUND
[0002] In recent years, there has been an increasing demand from car manufacturers for double safety locks for vehicle hoods. In such a lock, the first actuation of the lock by the user enables a partial opening, in which the hood is lifted a few centimetres but is still locked; then, the second actuation of the lock by the user enables a complete opening and lifting of the hood. Such locks are commonly referred to as double pull locks.
[0003] WO2021 / 121883A1 discloses a vehicle double pull lock comprising a catch adapted to fix the striker in the fully closed position and in the partially closed position. A pawl 3 locks the catch in the fully closed position and in the partially closed position. When the lock is closed, the user actuates the pawl for the first time, releasing the catch which moves from the fully closed position to the partially closed position. Then, the user actuates the pawl for the second time, releasing the catch which moves from the partially closed position to the fully open position.
[0004] WO2022084257A1 discloses a vehicle double pull lock with safety catch. In this case, the catch is adapted to fix the striker only in the fully closed position, while the safety catch is adapted to fix the striker in the partially closed position. When the lock is closed, the user triggers the pawl for the first time, releasing the catch so that the lock remains in the partially closed position, in which the safety catch locks the striker. Then, the user triggers the pawl for the second time, releasing the safety catch so that the lock is fully opened.
[0005] In any case, the pawl of the double pull lock is constantly subjected to the thrust of the spring, which pushes it towards the locking position of the catch. Therefore, the double pull lock has the drawback that, due to the repeated actuation of the pawl, the spring of the pawl can be damaged or ejected from its position, causing the pawl to be inoperable. In this case, since the pawl no longer locks the catch and the safety catch, if any, the lock can be accidentally opened. Obviously, this is a major safety problem, especially in the case of opening the lock while the vehicle is in motion. SUMMARY
[0006] The aim of the present invention is to eliminate the drawbacks of the prior art by providing a double pull lock with safety catch for a vehicle hood, adapted to keep the lock closed only when the spring of the pawl is inoperable.
[0007] Another aim is to provide a double pull lock which is safe, versatile, reliable, compact, simple to manufacture and operate.
[0008] These aims are achieved according to the invention having the characteristics of the independent claim 1.
[0009] Advantageous embodiments of the application emerge from the dependent claims.
[0010] The lock according to the application is defined in claim 1. BRIEF DESCRIPTION OF DRAWINGS
[0011] Further features of the present application will become apparent from the detailed description made hereinbelow with reference to purely exemplary and non-limiting embodiments thereof, shown in the attached drawings, wherein:
[0012] Figure 1 is a perspective view of a lock according to the present application;
[0013] Figure 1A is an enlarged detail view of Figure 1 , showing the spring of the pawl and the spring of the safety catch;
[0014] Figure 2 is an exploded perspective view showing the various components of a lock according to the present application;
[0015] Figure 3 is a perspective view showing the first plate and the second plate of a lock according to the present application;
[0016] Figure 4 is a perspective view showing the catch and the pawl of a lock according to the present application;
[0017] Figure 5 is a perspective view showing the safety catch of a lock according to the present application;
[0018] Figure 6 is a view of a lock according to the present application in the fully closed position;
[0019] Figure 6A is the same as Figure 6 , showing only the catch and the pawl;
[0020] Figure 7 is a view of the catch and the pawl when the pawl is pulled for the first time;
[0021] Figure 8 is a view of a lock according to the present application after the pawl has been pulled for the first time, in the intermediate partially closed position;
[0022] Figure 8A is the same as Figure 8 , showing only the catch and the pawl;
[0023] Figure 9 is a schematic view of the catch and the pawl when the pawl is pulled for the second time;
[0024] Figure 10 is a view of a lock according to the present application after the pawl has been pulled for the second time, in the open position;
[0025] Figure 10A With Figure 10 the same, only the catch and the pawl are shown;
[0026] Figure 11 is a view of a lock according to the present application, in which the spring of the pawl is omitted, thus simulating a situation in which the spring of the pawl is not active; and
[0027] Figure 12 is a perspective view showing a second embodiment of a lock according to the present application. DETAILED DESCRIPTION
[0028] With reference to the attached drawings, a lock according to the present application is described, which is globally indicated with the reference number 100.
[0029] With reference to Figure 1 , Figure 2 and Figure 3 , the lock 100 comprises a box A to which the catch 2, the pawl 3 and the safety catch 4 are pivoted. As shown in Figure 3 , the box A comprises a first plate 1 and a second plate 5.
[0030] The first plate 1 comprises a U-shaped slot 10 suitable to house the striker S Figure 6 ). The second plate 5 comprises a U-shaped slot 50 suitable to house the striker S. Thus, the first plate 1 and the second plate 5 are parallel to each other and the respective slots 10, 50 are aligned.
[0031] The lock 100 can be integral with the body of the vehicle and the striker S can be integral with the bonnet, or vice versa.
[0032] The first plate 1 has a first hole 11 and a second hole 12 arranged on the two sides of the slot 10. A first pivot pin P1 and a second pivot pin P2 are arranged in the first hole 11 and in the second hole 12 of the first plate, respectively, so as to make the catch 2 pivot about a first pivot axis X1 and the pawl 3 pivot about a second pivot axis X2.
[0033] The second plate 5 has a first hole 51 and a second hole 52 arranged on the two sides of the slot 50. In this way, the first pivot pin P1 and the second pivot pin P2 are arranged in the first hole 51 and in the second hole 52 of the second plate 5, respectively. Furthermore, the second plate 5 has a third hole 53 in which a third pivot pin P3 is provided so as to make the safety catch 4 pivot about a third pivot axis X3.
[0034] With reference to Figure 1 , the catch 2 and the pawl 3 are arranged between the first plate 1 and the second plate 5; on the contrary, the safety catch 4 is arranged in front of the second plate 5. The three pivot axes X1, X2, X3 are parallel to each other and perpendicular to the first plate 1 and to the second plate 5.
[0035] With reference to Figure 4The catch 2 comprises a U-shaped fixing seat 20 adapted to fix the striker S when the latter is located in the slot 10 of the first plate, thus closing the lock, as shown in Figure 6 and Figure 6A The catch 2 is rotatable around the first pivot axis X1, thus reaching three positions:
[0036] - a fully closed position (Fig. 1), Figure 6 and Figure 6A in which the catch 2 locks the striker S,
[0037] - a partially closed position (Fig. 2), Figure 8 and Figure 8A in which the striker S is raised with respect to the fully closed position, but is still held by the catch 2, and
[0038] - an open position (Fig. 3), Figure 10 and Figure 10A in which the catch 2 releases the striker S.
[0039] With reference to Figure 2 , the ejection mechanism 6 actuates the catch 2 or the striker S to push the catch 2 to its open position, thus ejecting the striker S from the lock.
[0040] In the example of Figure 2 , the ejection mechanism comprises a push rod 60 for pushing the striker S and a spring mechanism 61 for pushing the push rod 60. The spring mechanism 61 is arranged between a guide rail 63 fixed on the lock box and the push rod 60.
[0041] The guide rail 63 comprises two side bushes 63a, 63b and a central bush 63c.
[0042] The spring mechanism 61 comprises two compression-operated coil springs 61a, 62b. The coil springs 62a, 62b are arranged within the two side bushes 63a, 63b of the guide rail.
[0043] The push rod 60 comprises two side rods 60a, 6b and a central rod 60c, which are connected to a crossbar 62 adapted to push the striker. The side rods 60a, 6b and the central rod 60c of the push rod are respectively slidingly guided within the two side bushes 63a, 63b and the central bush 63c of the guide rail.
[0044] Back to Figure 4 , the catch 2 has a first stop seat 21 located below the fixing seat 20 and a second stop seat 22 located below the first stop seat 21. The stop seats 21, 22 have a shape similar to the V-shaped notch of one end of the catch. In addition, the catch 2 has a stop tooth 23 protruding above the fixing seat 20.
[0045] The pawl 3 comprises a stop tooth 30 adapted to engage in the first stop seat 21 or in the second stop seat 22 of the buckle. When the stop tooth 30 of the pawl engages in the first stop seat 21 of the buckle, the buckle is in the fully closed position. When the stop tooth 30 of the pawl engages in the second stop seat 22 of the buckle, the buckle is in the partially closed position.
[0046] The pawl 3 can be rotated about the second pivot axis X2 into three positions:
[0047] - a first locked position, in which the stop tooth 30 of the pawl engages in the first stop seat 21 of the buckle and the pawl locks the buckle in the fully closed position Figure 6A ).
[0048] - a second locked position, in which the stop tooth 30 of the pawl engages in the second stop seat 22 of the buckle and the pawl locks the buckle in the partially closed position Figure 8A ), and
[0049] - an unlocked position Figure 9 and Figure 10A , in which the stop tooth 30 of the pawl does not engage in the first stop seat 21 or in the second stop seat 22 of the buckle, thus releasing the buckle.
[0050] With reference to Figure 1 and Figure 2 , the pawl 3 is pressed into its locked positions by a first spring 8 connected to the pawl and to the box A. In the example of Figure 1 and Figure 2 , the first spring 8 of the pawl is a torsion spring. In this case, the first spring 8 has a spiral portion 80 arranged around the second pivot pin P2, a first end 81 attached to the box A and a second end 82 attached to the pawl 3.
[0051] Going back to Figure 4 , the pawl 3 has a first arm 31 and a second arm 32 which extend in opposite directions from the second pivot axis X2. The second arm 32 of the pawl is provided with a stop tooth 33 which projects towards the buckle, thus cooperating with the stop tooth 23 of the buckle.
[0052] Therefore, when the pawl 3 is pulled for the first time, the pawl 3 can assume an intermediate locked position Figure 7 , in which the stop tooth 33 of the pawl engages with the stop tooth 23 of the buckle.
[0053] The first arm 31 of the pawl is provided with a stop tooth 30 facing the buckle.
[0054] The first arm 31 of the pawl is provided with an actuation pin 34 whose axis is parallel to the second pivot axis X2 of the pawl.
[0055] With reference to Figure 3The second plate 5 has a curved slot 55 in which the pawl actuation pin 34 is movably inserted. In this way, the pawl actuation pin 34 can protrude outside the second plate 5 to cooperate with the safety pin 4.
[0056] The slot 55 of the second plate has a first end stop 55a and a second end stop 55b which define the stroke of the actuation pin 34 and, therefore, the rotational stroke of the pawl 3 about the second pivot axis X2. Obviously, the stroke of the pawl 3 can be defined by the contact of other components of the pawl 3 with components of the cartridge A and components of the buckle 2.
[0057] Returning to Figure 4 , the first arm 31 of the pawl is provided with a flange 35. Inside the flange 35 there is a first seat 36 adapted to house the second end 82 of the spring of the pawl. Conversely, the first end 81 of the spring of the pawl is arranged in a protrusion 54 ( Figure 3 ) protruding from the second plate 5.
[0058] As shown in Figure 1 , the first spring 8 of the pawl is arranged in front of the first spring 8 with respect to the second plate 5.
[0059] With reference to Figure 1 and Figure 2 , the pawl 3 is actuated by an actuation mechanism 7 adapted to move the pawl 3 towards the release position. The actuation mechanism 7 is connected to the pawl 3 by a Bowden wire 70. The Bowden wire 70 has a first ball 71 which engages in a second seat 37 of the flange 35 of the pawl.
[0060] The actuation mechanism 7 can be an actuator 73 or a manual actuation lever. If the actuation mechanism comprises an actuator, said actuator 73 comprises an electric motor 74 having a rotor 75 connected to a bracket 76 having a seat 77 which can house a second ball 72 of the Bowden wire 70.
[0061] With reference to Figure 5 , the safety buckle 4 has a central portion 40 which is pivoted about a third pivot axis X3 to a third pin P3. A main arm 41 protrudes from the central portion 40 of the safety buckle. The main arm has a tooth 42 at the end, defining an L-shaped seat 43 adapted to hold a striker S.
[0062] The safety buckle 4 can be rotated about the third pivot axis X3 to assume two positions:
[0063] - a non-operating position ( Figure 6 , Figure 8 and Figure 10 ) in which the tooth 42 of the safety buckle is distanced from the slot 10 of the first plate and, therefore, cannot engage the striker S; and
[0064] - an operating position (Figure 11 ), wherein the teeth 42 of the safety catch are located above the slot 10 of the first plate, thus engaging and retaining the striker S, preventing the opening of the hood.
[0065] Returning to Figure 5 , the safety catch 4 has an actuation arm 44 protruding radially from the central portion 40. The actuation arm 44 of the safety catch faces the actuation pin 34 of the pawl. The angle between the main arm 41 and the actuation arm 44 is about 70°-110°.
[0066] As shown in Figure 1 , the actuation arm 44 of the safety catch abuts against the actuation pin 34 of the pawl, thus retaining the safety catch 4 in the inoperative position.
[0067] The safety catch 4 is forced towards the operative position by a second spring 9 connected to the safety catch 4 and to the box A. The second spring 9 of the safety catch can be a torsion spring. In this case, the second spring 9 of the safety catch has a spiral portion 90 arranged around a third pivot pin P3, a first end 91 connected to the box A and a second end 92 connected to the safety catch 4.
[0068] With reference to Figure 1A , the first spring 8 rotates the pawl 3 in the direction V1 and exerts a first resultant force E1 on the actuation pin 34 of the pawl. The second spring 9 rotates the safety catch 4 in the direction V2 and exerts a second resultant force E2 on the actuation arm 44 of the safety catch.
[0069] The second resultant force E2 is opposite in direction to the first resultant force E1. The second resultant force E2 must be smaller than the first resultant force E1, so that the thrust exerted by the first spring 8 on the pawl 3 is greater than the thrust exerted by the second spring 9 on the catch 2.
[0070] In summary, when the first spring 8 is operated, the actuation pin 34 of the pawl pushes the actuation arm 44 of the catch, which is in the inoperative position. Conversely, when the first spring 8 is not operated, the actuation arm 44 of the catch pushes the actuation pin 34 of the pawl, which is in the operative position.
[0071] With reference to Figure 5 , the safety catch 4 has an L-shaped protrusion 45 protruding forward from the central portion 40.
[0072] With reference to Figure 3 , the second plate 5 has a protrusion 56 protruding forward.
[0073] With reference to Figure 1A , the first end 91 of the second spring is attached to the protrusion 56 of the second plate and the second end 92 of the second spring is attached to the protrusion 45 of the safety catch.
[0074] With reference to Figure 2The lock 100 comprises a sensor unit G adapted to detect the position of the catch 2. The sensor unit G is adapted to detect when the catch 2 is not in the fully closed position, i.e. the lock is open or in an intermediate closed position.
[0075] For redundancy purposes, the sensor unit G comprises two micro switches SW1, SW2 which are activated when the catch 2 is rotated in the opening direction before the catch 2 reaches the partially closed position.
[0076] The operation of the lock 100 is described below.
[0077] With reference to Figure 6 and Figure 6A the catch 2 is in the fully closed position, wherein it engages with the striker S and holds the striker S in place.
[0078] The pawl 3 is in the first locking position, wherein the stop teeth 30 of the pawl engage in the first stop seat 21 of the catch, thereby locking the catch 2 in the fully closed position.
[0079] Due to the actuation arm 44 of the safety catch 4 resting against the actuation pin 34 of the pawl, and the force of the first spring 8 being greater than the second spring 9, the safety catch 4 is in the non-operating position. In this case, the actuation pin 34 of the pawl rests against the first end stop 55a of the slot of the second plate.
[0080] The sensor unit G does not indicate that the catch 2 is in the open position.
[0081] To open the lock, the pawl 3 is first actuated (first pull) in the direction of the arrow F1, against the force of the first spring 8. As a result, the pawl 3 rotates clockwise around the second pivot axis X2 in the direction of the arrow F2, and the stop teeth 30 of the pawl disengage from the first stop seat 21 of the catch.
[0082] Due to the effect of the ejection mechanism 6, the catch 2 can rotate clockwise around the first pivot axis X1 in the direction of the arrow F3.
[0083] As shown in Figure 7 , during the rotation of the catch, the stop teeth 23 of the catch rest against the stop teeth 33 of the pawl, preventing the catch 2 from reaching its open position.
[0084] During the rotation of the pawl 3 to the unlocking position, the safety catch 4 is moved in the direction of the arrow F4 under the effect of the second spring 9. However, even if the teeth 42 of the safety catch are positioned above the striker S, the safety catch does not interfere with the striker S which is still held by the safety catch 2.
[0085] In addition, during the rotation of the catch, the striker S pushed by the ejection mechanism 6 is moved in the direction of the arrow F5 and is lifted with respect to its initial fully closed position, asFigure 7 is shown.
[0086] Referring to Figure 7 When the actuation force of the pawl 3 is interrupted, the first spring 8 pushes the pawl into its second locking position, in which the stop teeth 30 of the pawl engage with the second stop seat 22 of the catch. Thus, the catch 2 remains locked in its partially closed position, as Figure 8 and Figure 8A is shown. In this case, the safety catch 4 returns into its inoperative position, since the actuation arm 44 of the safety catch pushes against the actuation pin 34 of the pawl.
[0087] In this intermediate closed position, the striker S remains held within the fixed seat 20 of the catch. Moreover, the safety catch 4 remains in the inoperative position, since the actuation arm 44 of the safety catch abuts against the actuation pin 34 of the pawl.
[0088] Referring to Figure 8 and Figure 8A When the lock is in the intermediate closed position, the user actuates (pulls again) the pawl 3 for the second time, against the action of the first spring 8, in the direction of the arrow F6. As a result, the pawl 3 rotates clockwise about the second pivot axis X2 in the direction of the arrow F7, and the stop teeth 30 of the pawl disengage from the second stop seat 22 of the catch.
[0089] Under the action of the ejection mechanism 6, the catch 2 can rotate clockwise about the first pivot axis X1 in the direction of the arrow F8. In this case, during the rotation of the catch, the stop teeth 23 of the catch do not interfere with the stop teeth 33 of the pawl, and the catch 2 can reach its open position, so that the striker S can be moved in the direction of the arrow F9, out of the fixed seat 20 of the catch, as Figure 9 is shown.
[0090] When the actuation force of the pawl 3 is interrupted, the first spring 8 pushes the pawl into its initial position (as Figure 10 and Figure 10 a shown), in which the actuation pin 34 of the pawl is in the forward position, abutting against the first end stop 55a of the slot of the second plate 5.
[0091] In this open position of the lock, the safety catch 4 remains in the inoperative position, since the actuation arm 44 of the safety catch abuts against the actuation pin 34 of the pawl.
[0092] It should be noted that, during the normal operation of the lock, the safety catch 4 never interferes with the striker S, and thus never holds the striker, which is always held only by the catch 2.
[0093] The sensor unit G indicates that the lock is not fully closed, and thus in a potentially dangerous state, and the vehicle should not be driven.
[0094] As Figure 10 andFigure 10 From the open position of the lock, to close it, the striker S is pushed in the direction of arrow F10, against the force of the ejection mechanism 6, then the catch rotates in the direction of arrow F11 and counterclockwise, pushing the pawl 3 which rotates in the direction of arrow F12 and counterclockwise until the stop teeth 30 of the pawl first engage in the second stop seat 22 of the catch and then in the first stop seat 21 of the catch, returning the lock to the Figure 6A fully closed position, as shown.
[0095] Figure 11 The case in which the first spring 8 of the pawl is missing is shown. Obviously, this situation is due to the fact that the spring of the latch has broken or has been ejected from its retaining seat and cannot be operated.
[0096] In this case, the second spring 9 of the catch is not counter-sprung and therefore pushes the safety catch 4 which rotates in the direction of arrow F13, moving to its operating position in which the teeth 42 of the safety catch retain the striker S, preventing the opening of the hood.
[0097] The actuation arm 44 of the safety catch pushes the actuation pin 34 of the pawl which abuts against the second end stop 55b of the slot of the second plate.
[0098] The sensor unit G detects that the catch 2 is in the fully open position, i.e. the lock is open. However, the user cannot lift the hood since the safety catch 4 retains the striker S in place. This situation indicates that the first spring 8 of the pawl is defective. Therefore, in this case, the motor vehicle must be taken to the repair shop to repair the lock.
[0099] It should be noted that when the lock is open and the hood is raised and the striker S is above the safety catch 4, if the first spring 8 of the pawl is released / broken, the safety catch 4 would allow the striker S to re-engage into the intermediate closed position, as shown in Figure 8 and Figure 8A In fact, the safety catch 4 can rotate clockwise, it is simply pushed by the weight of the hood which would generate a vertical force on the striker S. Then, the safety catch 4 would return to its position and retain the striker S in place by the thrust of the second spring 9 of the safety catch.
[0100] Figure 12 A second embodiment of the vehicle lock 100 is shown, in which elements that are the same or correspond to those already described are indicated with the same reference numerals.
[0101] In this case, the first spring 8 of the pawl is a tensile spring, instead of a torsional spring. In any case, the first end 81 of the first spring 8 is attached to the box and the second end 82 is attached to the seat 36 of the pawl.
[0102] The second spring 9 of the safety catch is a torsion spring arranged around the pivot pin P3 of the safety catch, with a first end 91 attached to the box and a second end 92 attached to the protrusion 45 of the safety catch.
[0103] The ejection mechanism 6 comprises a torsion spring arranged around the pivot pin P1 of the catch 2 and having a first end attached to the box and a second end attached to the seat of the catch.
Claims
1. A vehicle lock (100) comprising: - a box (A) having a slot (10) adapted to house a striker (S) integral with a body part or cover of a vehicle, - a catch (2) having a fixing seat (20) adapted to fix the striker (S) when the latter is located in the slot (10) of the box; said catch (2) being pivoted to the box (A) about a first pivot axis (XI) so as to assume three positions: a fully closed position in which the catch (2) locks the striker (S); a partially closed position in which the striker (S) is raised with respect to the fully closed position but is held by the catch (2); and an open position in which the catch (2) releases the striker (S), - an ejection mechanism (6) operating the catch (2) or the striker (S) so as to push the catch (2) to its open position, thus allowing the striker (S) to be ejected from the lock, - a pawl (3) pivoted to said box (A) about a second pivot axis (X2) so as to assume three positions: a first locking position in which the pawl locks the catch in the fully closed position; a second locking position in which the pawl locks the catch in the partially closed position; and an unlocking position in which the pawl does not lock the catch; said pawl having an actuation pin (34) protruding therefrom; - a first spring (8) pushing the pawl (3) into its locking positions so as to exert a first resultant force (El) on the actuation pin (34) of the pawl, - an actuation mechanism (7) connected to the pawl (3) so as to actuate the pawl to its unlocking position, - a safety catch (4) having a tooth (42) adapted to lock said striker (S) and an actuation arm (44) cooperating with the actuation pin (34) of said pawl; said safety catch (4) being pivoted to said box (A) about a third pivot axis (X3) so as to assume two positions: a non-operating position in which the tooth (42) of the safety catch is distanced from the slot (10) of the box and does not lock the striker (S); and an operating position in which the tooth (42) of the safety catch is located over said slot (10) of the box and locks the striker (S), and - a second spring (9) pushing said safety catch (4) into said operating position; wherein the second spring (9) exerts a second resultant force (E2) on the actuation arm (44) of the safety catch opposite the first resultant force (El) so that the actuation arm (44) of the safety catch abuts against the actuation pin (34) of the pawl. wherein the second resultant force (E2) exerted by the second spring (9) on the actuation arm (44) of the safety catch is smaller than the first resultant force (El) exerted by the first spring (8) on the actuation pin (34) of the pawl, so that when the first spring (8) is operating, the actuation pin (34) of the pawl pushes the actuation arm (44) of the safety catch, the safety catch being in a non-operating position, and when the first spring (8) is not operating, the actuation arm (44) of the safety catch pushes the actuation pin (34) of the pawl, the safety catch being in an operating position.
2. The lock (100) according to claim 1, wherein Said box (A) comprises a first plate (1) to which the catch (2) and the pawl (3) are pivoted, and a second plate (5) to which the safety catch (4) is pivoted.
3. The lock (100) according to claim 2, wherein Said second plate (5) has a curved slot (55) through which said actuation pin (34) of the pawl passes.
4. The lock (100) according to claim 3, wherein Said slot (55) of the second plate (5) has a first end stop (55a) and a second end stop (55b) which define the stroke of the actuation pin (34) and, therefore, the rotation stroke of the pawl (3) about the second pivot axis (X2).
5. The lock (100) according to any one of the preceding claims, wherein Said first spring (8) is a torsion spring having a central portion (80) arranged around the pivot pin (P2) of the pawl, a first end (81) constrained to the box and a second end (82) constrained to the seat (36) of the pawl.
6. The lock (100) according to any one of the preceding claims, wherein Said second spring (9) is a torsion spring having a central portion (90) arranged around the pivot pin (P3) of the safety catch, a first end (91) constrained to the box and a second end (92) constrained to the protrusion (45) of the safety catch.
7. The lock (100) according to any one of the preceding claims, wherein Said catch (2) has a first stop seat (21) and a second stop seat (22) and said pawl (3) has a stop tooth (30) adapted to engage in the first stop seat (21) or in the second stop seat (22) of the catch; so that when the stop tooth (30) of the pawl engages in the first stop seat (21) of the catch, the catch is in a fully closed position, and when the stop tooth (30) of the pawl engages in the second stop seat (22) of the catch, the catch is in a partially closed position.
8. The lock (100) according to any one of the preceding claims, comprising a sensor unit (G) adapted to detect when the catch (2) is not in a fully closed position.
9. The lock (100) according to any one of the preceding claims, wherein Said actuation mechanism (7) comprises an actuator (73) comprising an electric motor (74) having a rotor (75) connected to a bracket (76) connected to a Bowden wire (70) attached to the pawl (3).
10. The lock (100) according to any one of the preceding claims, wherein The ejecting mechanism comprises a push rod (60) adapted to push the striker (S) and a spring mechanism (61) arranged between the guide rail (63) of the case attached to the lock and the push rod (60); wherein the push rod (60) is slidably mounted and guided in the guide rail (63).
Citation Information
Patent Citations
Vehicle double-pull lock
WO2021121883A1
Double-pull vehicle lock with safety catch
WO2022084257A1