Locking mechanism with clutch function

Abstract

The utility model relates to the field of automobile parts, in particular to a locking mechanism with a clutch function. A locking mechanism with a clutch function comprises a support, the support is provided with an opening, baffles are transversely arranged on the two sides of the middle of the support, the baffles are spaced, a bolt is arranged in the support of the baffles, a pressure spring is sleeved with the bolt, the pressure spring is clamped between the baffles, one end of a steel wire rope is connected into the bolt, and the steel wire rope penetrates through an inhaul cable and one end of a straight wire pipe to be arranged on a pipe cap a in a sleeved mode. The other end of the steel wire rope is connected with the casting head; the casting head is clamped on the cam; an external gear is arranged on the cam, the external gear is meshed with teeth on a rotating shaft; the cam is connected with an executor, a cover plate is arranged on the bracket, the rotating shaft is mounted at one end of a hinge, and a clamping head is arranged at one end of a bolt and extends out of the bracket. And the chuck is clamped on an earring hole at the other end of the hinge. The clutch locking and unlocking device has the advantages that clutch locking and unlocking stability is improved, and locking force is increased.

Description

Technical Field

[0001] The utility model relates to the field of automobile parts, in particular to a locking mechanism with a clutch function. Background Art

[0002] All kinds of opening and closing parts in the field of automobiles are applied to the charging port cover, fuel tank cover, sunroof, trunk, etc. At present, the clutch mechanisms on the market can only achieve short-distance opening and closing. Generally, a long shaft is used for the existing automobile charging port cover on the market to achieve this function, but the long shaft is prone to deformation and it is difficult to guarantee the accuracy, which improves the accuracy requirements for individual parts and increases the cost. The locking and unlocking of the charging port and fuel tank cover of automobiles on the market are unstable. The size chain of the clutch mechanisms on the market is relatively long, resulting in a low error tolerance rate. The locking force of the locking mechanisms on the market is insufficient. Summary of the Invention

[0003] In order to solve the above technical problem of unstable locking and unlocking, the utility model provides a locking mechanism with a clutch function.

[0004] The technical solution of the utility model is as follows:

[0005] A locking mechanism with a clutch function includes a bracket. The bracket is provided with an opening. On both sides of the middle of the bracket, baffles are horizontally arranged. There is a gap between the baffles. A plug pin is arranged inside the baffle bracket. A compression spring is sleeved in the plug pin. The compression spring is clamped between the baffles. One end of a steel wire rope is connected in the plug pin. The steel wire rope passes through a cable. One end of a straight wire tube is sleeved on a cap a. The cap a is clamped on the bracket. The other end of the straight wire tube is sleeved on a cap b. The other end of the steel wire rope is connected to a casting head. The casting head is clamped on a cam. An external gear is arranged on the cam. The external gear meshes with the teeth on a rotating shaft. The cam is connected to an actuator. A cover plate is arranged on the bracket. The rotating shaft is installed at one end of a hinge. One end of the plug pin is a clamping head. The clamping head extends out of the bracket. The clamping head is clamped in the earring hole at the other end of the hinge.

[0006] A notch is arranged on the outer wall of one end of the bracket, and the notch is located outside the baffle.

[0007] A protective tube is sleeved outside the straight wire tube.

[0008] A fixing rod is arranged in the middle at the bottom of the cam. A guide groove is arranged at the bottom of the cam. A guide post is arranged on the outer wall of one end of the casting head. The guide post is clamped in the guide groove. One side of the upper part of the cam is sunken. A jack is arranged in the sunken part. The external gear is arranged in the jack.

[0009] Using the technical solution of the utility model, the structure is novel, the design is ingenious and simple, the stability of clutch locking and unlocking is improved, and the locking force is increased; there are few parts, the assembly is simple, it is easy to disassemble, and the cost is reduced; the structure is more compact, modularization can be realized in opening and closing products, it can be designed in the lock body or can be independent from the lock body; it can be arranged inside the product without affecting the appearance of the product. Brief Description of the Drawings

[0010] Figure 1 、 2 are the structural schematic diagrams of the present utility model;

[0011] Figure 3 、 4 、5 are the structural schematic diagrams of parts of the present utility model;

[0012] Figure 6 is the structural schematic diagram of the cover plate of the present utility model;

[0013] Figure 7 is the structural schematic diagram of the bracket of the present utility model;

[0014] Figure 8 is the structural schematic diagram of the cam of the present utility model;

[0015] Figure 9 、 10 are the structural schematic diagrams of the initial position of the cam of the present utility model;

[0016] Figure 11 、 12 are the structural schematic diagrams of the pulling state of the cam of the present utility model;

[0017] Figure 13 、 14 are the structural schematic diagrams of the limit position of the cam of the present utility model. Detailed Description of the Preferred Embodiment

[0018] The present utility model will be further described below in conjunction with the drawings and embodiments. Embodiment

[0019] As Figure 1 、 2A locking mechanism with a clutch function as shown in Figures 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, and 14, including a bracket 1. The bracket 1 is used to support the entire locking mechanism and install components such as cables and pins. The bracket 1 is open, and there are transverse baffles 13 on both sides in the middle of the bracket 1 with a gap between them. A pin 2 is arranged inside the baffle bracket 1, and a compression spring 3 is sleeved in the pin 2. The compression spring 3 is clamped between the baffles 13. One end of a steel wire rope 11 is connected in the pin 2. The steel wire rope 11 passes through a straight wire tube 4. One end of the straight wire tube is sleeved on a tube cap a14, and the tube cap a14 is clamped on the bracket 1. The other end of the straight wire tube 4 is sleeved on a tube cap b10. The other end of the steel wire rope 11 is connected to a casting head 7, and the casting head 7 is clamped on a cam 9. An external gear 8 is arranged on the cam 9, and the external gear 8 meshes with the teeth on a rotating shaft 6. The cam 9 is connected to an actuator. A cover plate 15 is arranged on the bracket 1. The rotating shaft 6 is installed at one end of a hinge 22. One end of the pin 2 is a chuck 16, and the chuck 16 extends out of the bracket 1 and is clamped on an earring hole 17 at the other end of the hinge 22. The rotating shaft 6 is made of stainless steel and serves as the rotation center shaft of the hinge 22 to transmit force from the external gear 8 to the hinge 22.

[0020] There is a notch on the outer wall at one end of the bracket 1, and the notch is located outside the baffle 13.

[0021] A protective tube 5 is sleeved outside the straight wire tube 4. The straight wire tube 4 is used to protect the steel wire rope 11 and at the same time determine the direction of the straight wire tube 4. Fixing points can be added to the straight wire tube 4 as required. The steel wire rope 11 is made of stainless steel, with one end connected to the clutch structure and the other end connected to the locking structure for force transmission.

[0022] There is a fixing rod 18 in the middle at the bottom of the cam 9, and a guide groove 19 is arranged at the bottom of the cam 9. A guide post 20 is arranged on the outer wall at one end of the casting head 7, and the guide post 20 is clamped in the guide groove 19. One side of the upper part of the cam 9 is concave, and a jack 21 is arranged in the concave part, and the external gear 8 is arranged in the jack 21.

[0023] During use, the external gear 8 is made of stainless steel. The number of teeth can be changed according to requirements to adjust the transmission ratio and transmit force from the actuator to the rotating shaft 6. The cam 9 is one of the parts used to control the telescopic function of the pin. The shape of the guide rail on the front of the cam can be changed according to the stroke. One end of the compression spring 3 is fixed on the bracket 1 and the other end is fixed on the pin 2 to provide a return force for the entire mechanism. The casting head 7 is made of metal, connected to the steel wire rope 11, and the guide post 20 at the end is assembled in the guide groove 19 of the cam 9 to realize the pulling of the straight wire tube 4. The protective tube 5 is used to protect the straight wire tube 4 to prevent abnormal noise caused by collision with surrounding parts due to vibration. The pin 2 is used for limiting the hinge 22 and can move inside the bracket 1.

[0024] This locking mechanism is mainly divided into two parts. One part is the locking area, and the other part is the clutch area. The locking area can choose bolt locking or ratchet locking according to actual needs, and guiding structures are designed on both the bolt and the ratchet. Taking the charging / access cover of a vehicle as an example, when the access cover is in the closed state, the bolt 2 passes through the earring hole 17 on the hinge 22 to meet the locking force requirements of the market. When the access cover is opened, the actuator receives the vehicle electrical signal and starts to work, driving the cam 9 to rotate clockwise. There is an angular difference between the cam 9 and the external gear 8. So when the cam 8 just starts to rotate, the external gear 8 does not work. However, the guide groove 19 on the cam 9 will follow the rotation and start to pull the cable. The cable includes a straight wire tube 4, a steel wire rope 11, a protection tube 5, a tube cap a14, a tube cap b10, and a casting head 7. One end of the cable is assembled in the guide groove 19 of the cam 9, and the other end is assembled on the bolt 2. So when the cam 9 rotates clockwise, the bolt 2 will be pulled out of the earring hole 17 of the hinge 22 due to the pulling of the cable, thus realizing unlocking. After unlocking, the angular difference between the cam 9 and the external gear 8 becomes 0°. When the cam 9 continues to rotate clockwise, it will drive the external gear 8. The external gear 8 meshes with the tooth profile on the rotating shaft 6. The rotating shaft 6 has an interference fit with the hinge 22 and can drive the hinge 22 to open. During the opening process of the hinge 22, the bolt 2 remains stationary and will not continue to retract due to the clockwise rotation of the cam 9. When the earring hole 17 on the hinge 22 moves to a position where it cannot be locked by the bolt 2, at this time, the guide groove 19 on the cam 9 will release the cable, and the bolt 2 will be reset by the compression spring 3 in the locking mechanism. And the hinge 22 is opened at a constant speed throughout the process without pausing until the hinge 22 is opened to the limit state, the actuator stops working and remains in the current position, thus completing the entire opening step of the access cover; conversely, when the access cover is closed, the steps of opening are played back. The existing locking force of the charging access cover on the market is basically equal to the clamping force of the actuator itself, so the locking force is less than 30N, which may cause the charging access cover to open by itself when the vehicle is driving on a bumpy road. The traditional locking mechanism has the problem of low force transmission efficiency. During the opening process of the charging access cover, the bolt and the hinge move simultaneously, which causes the inner wall of the earring hole on the hinge to be stuck in the bolt interlock before the bolt retracts, resulting in the access cover being unable to open smoothly. However, when the clutch mechanism is applied to the locking mechanism, it can make the bolt retraction and the hinge opening have a time difference. Only after the bolt is completely retracted can the hinge start to move, solving the problem of bolt and hinge interlock. And considering that the compression spring being in a compressed state for a long time will cause its service life to decline, after the hinge is opened to a certain angle, the compression spring can reset itself, thereby increasing the service life of the entire mechanism. The locking mechanism requires simple part structures, is easy to disassemble, and reduces costs.

[0025] It should be understood that the above description is only a preferred embodiment of the present utility model and is not sufficient to limit the technical solution of the present utility model. For those of ordinary skill in the art, within the spirit and principle of the present utility model, additions, deletions, substitutions, transformations or improvements can be made according to the above description, and all these technical solutions after the additions, deletions, substitutions, transformations or improvements should fall within the protection scope of the appended claims of the present utility model.

Claims

1. A locking mechanism with a clutch function, comprising a bracket (1), characterized in that: The bracket (1) is open, and baffles (13) are horizontally arranged on both sides in the middle of the bracket (1). There is a gap between the baffles (13). A latch pin (2) is arranged inside the baffle bracket (1). A compression spring (3) is sleeved in the latch pin (2). The compression spring (3) is clamped between the baffles (13). One end of a steel wire rope (11) is connected in the latch pin (2). The steel wire rope (11) passes through a straight wire tube (4). One end of the straight wire tube (4) is sleeved on a pipe cap a (14). The pipe cap a (14) is clamped on the bracket (1). The other end of the cable is sleeved on a pipe cap b (10). The other end of the steel wire rope (11) is connected to a casting head (7). The casting head (7) is clamped on a cam (9). An external gear (8) is arranged on the cam (9). The external gear (8) meshes with the teeth on a rotating shaft (6). The cam (9) is connected to an actuator. A cover plate (15) is arranged on the bracket (1). The rotating shaft (6) is installed at one end of a hinge (22). One end of the latch pin (2) is a chuck (16). The chuck (16) extends out of the bracket (1). The chuck (16) is clamped on the earring hole (17) at the other end of the hinge (22).

2. The locking mechanism with a clutch function according to claim 1, characterized in that: A notch is provided on the outer wall of one end of the bracket (1). The notch is located outside the baffle (13).

3. A locking mechanism with a clutch function according to claim 1, characterized in that: A protective tube (5) is sleeved outside the straight wire tube (4).

4. The locking mechanism with a clutch function according to claim 1, characterized in that: A fixing rod (18) is provided in the middle at the bottom of the cam (9). A guide groove (19) is provided at the bottom of the cam (9). A guide post (20) is provided on the outer wall of one end of the casting head (7). The guide post (20) is clamped in the guide groove (19). One side of the upper part of the cam (9) is recessed. A jack (21) is provided in the recess. The external gear (8) is arranged in the jack.

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