A silent lock

Abstract

The present invention discloses a silent lock with good buffering and shock-absorbing performance, stable connection and reliable operation, comprising: a fixing assembly, the fixing assembly comprising a lower fixing plate, the lower fixing plate being connected to the vehicle body; a lock assembly, the lock assembly comprising a lock plate and a lock body connected to the lock plate, the lock plate being placed between the vehicle body and the lower fixing plate; a retaining structure, the retaining structure comprising a protrusion provided on at least one of the opposite end faces of the lower fixing plate and the lock plate, and a recessed portion provided on at least one of the opposite end faces of the lower fixing plate and the lock plate and gap-matched with the protrusion; a buffer portion, the buffer portion comprising a first buffer portion provided on the lock plate and in contact with the end face of the fixing plate, and after the protrusion and the recessed portion cooperate with each other to act on the first buffer portion, the first buffer portion is embedded between the lock plate and the lower fixing plate; the present invention relates to the field of automobile spare parts technology.

Description

Technical Field

[0001] The present invention relates to the technical field of automobile parts, and more specifically to a silent lock. Background Art

[0002] The locking function of the car's opening and closing parts, doors, trunk lid and back door, is achieved by the door locks installed on the opening and closing parts cooperating with the locks installed on the body frame.

[0003] The lock structure currently commonly used on the trunk lid and tailgate of passenger cars can be found in the lock assembly and vehicle announced with the announcement number CN214246968 U. It includes a mounting plate 111 for connecting to the vehicle body through a connecting piece. The mounting plate 111 is used to install the buckle body. The mounting plate 111 is covered with a shock-absorbing layer 3. The shock-absorbing layer 3 separates the bushing 2 and the vehicle body sheet metal from the mounting plate 111 to achieve a buffering and shock-absorbing effect.

[0004] However, the lock structure of the above structure has the following problems: since the lock is connected to the mounting plate, and the mounting plate is directly connected to the vehicle body, the degree of integration is high after the connection, the mounting plate is directly subjected to force, and the shock-absorbing layer has limited buffering and shock-absorbing effect. Summary of the Invention

[0005] In view of the shortcomings and defects of the existing technology, a silent lock buckle with good buffering and shock absorption performance, stable connection and reliable operation is provided.

[0006] A silent lock, comprising:

[0007] A fixing assembly, the fixing assembly comprising a lower fixing plate connected to the vehicle body;

[0008] A lock assembly, comprising a lock plate and a buckle body connected to the lock plate, wherein the lock plate is placed between the vehicle body and the lower fixing plate;

[0009] A retaining structure comprising a protrusion provided on at least one of the opposite end surfaces of the lower fixing plate and the locking plate, and a recess provided on at least one of the opposite end surfaces of the lower fixing plate and the locking plate and having a clearance fit with the protrusion;

[0010] The buffer portion includes a first buffer portion provided on the lock plate and in contact with the end surface of the fixing plate, and after the protrusion and the recess cooperate to act on the first buffer portion, the first buffer portion is embedded between the lock plate and the lower fixing plate;

[0011] The buffer portion further includes a second buffer portion provided on the strike plate for contacting the surface of the vehicle body;

[0012] The protrusions include at least one first protrusion extending along the horizontal center line A of the lock plate, and at least one second protrusion extending along the vertical center line B of the lock plate.

[0013] The first protrusion and the second protrusion intersect at the center of the locking plate;

[0014] The two connecting ends of the buckle body are arranged opposite to each other along the diagonal line C of the locking plate, and the two connecting ends are arranged at an intersection of the first protrusion and the second protrusion.

[0015] With the above structure, the silent lock buckle of the present invention has the following advantages compared with the prior art: the connecting end of the buckle body is connected to the lock plate, the lower fixing plate can be connected to the vehicle body by screws or other connection methods, the lock plate is engaged in the recessed portion by the protrusion and the first buffer portion adapted to the protrusion, and the interaction effectively limits the lock plate to prevent it from moving beyond the range, the lock plate is firmly connected, the buckle body is firmly and reliably positioned, and the buckle body has extremely high reliability when being fastened or disengaged (subjected to force);

[0016] Another function of the first buffer portion on the locking plate is to act as a buffer between the lower fixing plate and the locking plate;

[0017] The second buffer portion of the lock plate contacts and presses against the vehicle body, making the lock plate more stable and reliable, and enabling the protrusion and the first buffer portion adapted to the protrusion to be stably located in the recessed portion, maintaining an effective limiting state;

[0018] On the other hand, the second buffer part buffers the impact between the locking plate and the vehicle body, and combined with the first buffer part, plays a multiple buffering role, so that the impact is fully and efficiently buffered and the noise is reduced.

[0019] As an improvement of the present invention, there are a plurality of protrusions, each of which is provided on the lower end surface of the locking plate, and the protrusions are arranged in a structure that intersects or does not intersect;

[0020] The recessed portion is arranged on the front end surface of the lower fixing plate, and the recessed portion is matched with the protruding portion in position and number.

[0021] As an improvement of the present invention, the two connecting ends of the buckle body are connected to the locking plate with at least one protrusion spaced therebetween.

[0022] As an improvement of the present invention, the lower fixing plate is provided with opposite connection holes along the diagonal line D, and the connection holes are for the connection members to pass through and connect with the vehicle body;

[0023] The diagonal line D intersects with the diagonal line C, and the intersection coincides with the intersection of the first protrusion and the second protrusion.

[0024] As an improvement of the present invention, the second buffer portion is provided on the front end surface of the locking plate and at a position opposite to the connecting end.

[0025] As an improvement of the present invention, the lower fixing plate is formed with the recessed portion by stamping, and the locking plate is formed with the protruding portion by stamping. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a structural schematic diagram of the present invention.

[0027] Figure 2 The present invention Figure 1 Schematic diagram of the components in the exploded state.

[0028] Figure 3 It is a structural schematic diagram of the locking plate of the present invention.

[0029] Figure 4 It is a schematic diagram of the single lower fixing plate implementation of the present invention.

[0030] Figure 5 The present invention Figure 4 Schematic diagram of the structure under local structure explosion state.

[0031] Figure 6 It is a structural schematic diagram of the lower fixing plate of the present invention.

[0032] Figure 7 It is a schematic diagram of the local structure of the present invention in a sectional state.

[0033] Figure 8 It is a schematic diagram of the force distribution of the present invention.

[0034] Figure 9 It is a schematic diagram of the force distribution of the present invention.

[0035] As shown in the figure: 1. Lower fixing plate; 1.1. Recessed portion; 1.2. Connecting hole; 2. Locking plate; 2.1. Protruding portion; 2.11. First protruding portion; 2.12. Second protruding portion; 2.2. Connecting portion; 2.21. Bending portion; 3. Buckle body; 4. Buffering portion; 4.1. First buffering portion; 4.2. Second buffering portion; 4.3. Third buffering portion; 5. Upper fixing plate; 5.1. Tightening portion; 6. Notch; 7. Rivet. DETAILED DESCRIPTION

[0036] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0037] See also Figure 1-9 As shown, a silent lock includes:

[0038] The fixing assembly includes a lower fixing plate 1, and the lower fixing plate 1 is connected to the vehicle body;

[0039] The lock assembly includes a lock plate 2 and a buckle body 3 connected to the lock plate 2, and the lock plate 2 is placed between the vehicle body and the lower fixing plate 1;

[0040] The retaining structure includes a protrusion 2.1 provided on at least one of the opposite end surfaces of the lower fixing plate 1 and the locking plate 2, and a recessed portion 1.1 provided on at least one of the opposite end surfaces of the lower fixing plate 1 and the locking plate 2 and having a clearance fit with the protrusion 2.1;

[0041] The buffer portion 4 includes a first buffer portion 4.1 provided on the locking plate 2 and in contact with the end surface of the fixing plate, and after the protrusion 2.1 and the recessed portion 1.1 cooperate with each other to act on the first buffer portion 4.1, the first buffer portion 4.1 is embedded between the locking plate 2 and the lower fixing plate 1;

[0042] The buffer portion 4 further includes a second buffer portion 4.2 provided on the striker plate 2 for contacting the vehicle body surface;

[0043] The protrusion 2.1 includes at least one first protrusion 2.11 extending along the horizontal center line A of the lock plate 2, and at least one second protrusion 2.12 extending along the vertical center line B of the lock plate 2.

[0044] The first protrusion 2.11 and the second protrusion 2.12 intersect at the center of the locking plate 2;

[0045] The two connecting ends of the buckle body 3 are arranged opposite to each other along the diagonal line C of the locking plate 2, and the two connecting ends are arranged at the intersection of the first protrusion 2.11 and the second protrusion 2.12.

[0046] The connecting end of the buckle body 3 is connected to the locking plate 2 (riveted or welded), and the lower fixing plate 1 can be connected to the vehicle body by connecting means such as connectors (screws). The locking plate 2 is engaged in the recessed portion 1.1 via the protrusion 2.1 and the first buffer portion 4.1 adapted to the protrusion 2.1. The interaction effectively limits the locking plate 2 to prevent it from moving beyond the range. The locking plate 2 is firmly connected, and the buckle body 3 is firmly and reliably positioned. As a result, the buckle body 3 has extremely high reliability when being engaged or disengaged (subjected to force).

[0047] Another function of the first buffer portion 4.1 on the locking plate 2 is to act as a buffer between the lower fixing plate 1 and the locking plate 2;

[0048] The second buffer portion 4.2 on the lock plate 2 is in contact with the vehicle body, making the lock plate 2 more stable and reliable, and enabling the protrusion 2.1 and the first buffer portion 4.1 adapted to the protrusion 2.1 to be stably located in the recessed portion 1.1, maintaining an effective limiting state;

[0049] On the other hand, the second buffering portion 4.2 buffers the impact between the locking plate 2 and the vehicle body, and combined with the first buffering portion 4.1, plays a multiple buffering role, so that the impact is fully and efficiently buffered and the noise is reduced.

[0050] The first protrusion 2.11 and the second protrusion 2.12 form a cross structure when combined. The recessed portion 1.1, the first protrusion 2.11, and the second protrusion 2.12 are arranged in a matching position and number, also forming a cross structure. Furthermore, the protrusion 2.1 and the buffer portion 4 (first buffer portion 4.1) on the bottom end surface of the lock are embedded in the recessed portion 1.1. With the above improvements, the position of the lock plate 2 is stable and reliable, and the buffering performance is improved.

[0051] Furthermore, after the two connecting ends of the buckle body 3 are arranged opposite to each other along the diagonal line C, the two connecting ends are arranged at the intersection of the first protrusion 2.11 and the second protrusion 2.12, that is, the two connecting ends are located in the area between the two retaining structures.

[0052] When the buckle body 3 is subjected to force along the X-axis (F1, F2 direction) or the Y-axis (F3, F4 direction), the retaining structures in both directions can play a retaining role, and the retaining structures in the two directions work together, thereby greatly improving the force-bearing performance of the buckle body 3 and the locking plate 2, and the position of the locking plate 2 and the buckle body 3 is stable, and the operation reliability is high.

[0053] As an improvement of the present invention, there are several protrusions 2.1, which are respectively arranged on the lower end surface of the locking plate 2, and the protrusions 2.1 are arranged in a structure that intersects or does not intersect;

[0054] The recessed portion 1.1 is provided on the front end surface of the lower fixing plate 1, and the recessed portion 1.1 matches the protruding portion 2.1 in position and quantity. After the above improvement, the protruding portion 2.1 can be one or more, and the recessed portion 1.1 matches the protruding portion 2.1 in position and quantity. When there are multiple protruding portions 2.1 and the recessed portion 1.1, and they are matched, the locking plate 2 is better retained.

[0055] As an improvement to the present invention, the two connecting ends of the buckle body 3 are connected to the locking plate 2 with at least one protrusion 2.1 spaced apart. After the above improvement, the connection ends are separated by at least one protrusion 2.1 (i.e., the connection positions of the two ends of the buckle body 3 and the locking plate 2 are separated in the horizontal direction by the retaining structure). The force on the locking plate 2 caused by the buckle body 3 is distributed on both sides of the retaining structure. The locking plate 2 can be effectively maintained by the retaining structure in different force directions. The position of the locking plate 2 and the buckle body 3 is stable, the force-bearing performance of the buckle body 3 is greatly improved, and the operation is highly reliable.

[0056] As an improvement of the present invention, the lower fixing plate 1 is provided with opposite connecting holes 1.2 along the diagonal line D, and the connecting holes 1.2 are for connecting members to pass through and connect with the vehicle body;

[0057] The diagonal line D intersects the diagonal line C, and the intersection coincides with the intersection of the first protrusion 2.11 and the second protrusion 2.12. After the above improvement, the connection hole 1.2 is set along the diagonal line D, and the connection hole 1.2 is for the connection part to pass through and connect to the vehicle body. The connection position between the lower fixing plate 1 and the vehicle body is set with a connection position between the connection end and the lock, and the diagonal line D and the diagonal line C are rotationally symmetrical.

[0058] After the upper fixing plate 5 is connected to the vehicle body through the above-mentioned connection method, the connection is extremely stable, and the support effect on the lock plate 2 is good, and the force-bearing performance of the lock is further improved.

[0059] As an improvement to the present invention, the second buffer portion 4.2 is provided on the front end surface of the locking plate 2, opposite the connection end. The second buffer portion 4.2 and the first buffer portion 4.1 can be made of rubber covering the outside of the locking plate 2, which facilitates processing, and the integrated design improves structural strength.

[0060] The front end surface of the second buffer part 4.2 is higher than the setting of the fixing component. When it contacts the vehicle body, it can isolate the fixing component from the vehicle body, and when the lock plate 2 is subjected to force due to the buckle body 3, it will not be directly transmitted to the vehicle body and the fixing component.

[0061] As an improvement of the present invention, the fixing assembly further includes an upper fixing plate 5, which is connected to the front of the lower fixing plate 1.

[0062] The upper fixing plate 5 is also provided with a pressing portion 5.1 that matches the structure of the recessed portion 1.1. An accommodating space is formed between the upper fixing plate 5 and the lower fixing plate 1, and the locking plate 2 is located in the accommodating space;

[0063] The buffer portion 4 further includes a third buffer portion 4.3 in contact with the end surface of the upper fixing plate 5;

[0064] The pressing portion 5.1 presses against the third buffer portion 4.3, thereby retaining the protruding portion 2.1 and the corresponding second buffer portion 4.2 in the recessed portion 1.1.

[0065] After the above improvement, the upper fixing plate 5 is located at the front end of the buffer portion 4. The buffer portion 4 has a third buffer portion 4.3 that contacts the lower end surface of the fixing plate. The third buffer portion 4.3 is integrally formed with the second buffer portion 4.2 and the first buffer portion 4.1, and is covered on the locking plate 2.

[0066] The upper fixing plate 5 and the lower fixing plate 1 are respectively provided with notches 6 at positions corresponding to the connection ends. The notches 6 of the upper fixing plate 5 allow the second buffer portion 4.2 to leak out, and the notches 6 on the lower fixing plate 1 allow the connection end to be connected to the locking plate 2.

[0067] The buffer portion 4 and the locking plate 2 are also provided with fractures in the areas corresponding to the connection holes 1.2, respectively. The fractures allow the upper fixing plate 5 and the lower fixing plate 1 to partially achieve surface contact, and the connection piece passes through the lower fixing plate 1 and the upper fixing plate 5, thereby improving the connection stability.

[0068] Rivets are provided at the center of the upper fixing plate 5, the buffer portion 4, the locking plate 2, and the lower fixing plate 1. The rivets are interference fit with the holes on the upper fixing plate 5, the buffer portion 4, and the lower fixing plate 1, and a gap is reserved between the rivets and the holes on the locking plate 2.

[0069] The pressing portion 5.1 on the upper fixing plate 5 is used to press against the buffer portion 4 and the locking plate 2, so that the protrusion 2.1 and the second buffer portion 4.2 adapted to the protrusion 2.1 are firmly embedded in the recessed portion 1.1, further improving the stability of the locking plate 2 and the buckle body 3, and improving the buffering and noise reduction performance.

[0070] As an improvement to the present invention, the lower fixing plate 1 is stamped to form a recessed portion 1.1, and the locking plate 2 is stamped to form a protruding portion 2.1. The upper fixing plate 5 is also a stamped structure, using a stamping process that is low in cost, easy to produce, and highly reliable.

[0071] The cross sections of the pressing portion 5.1, the protruding portion 2.1, and the recessed portion 1.1 are respectively arranged in a "V"-shaped structure, so as to achieve a better fit and stability.

[0072] A connecting portion 2.2 is provided at a position corresponding to the outer edge of the protrusion 2.1 of the locking plate 2. The connecting portion 2.2 is bent and extends outward away from the protrusion 2.1, and the connecting portion 2.2 is exposed from the notch 6. An angle is formed between the connecting portion 2.2 and the outer edge of the protrusion 2.1. The connecting portion 2.2 can elastically deform relative to the protrusion 2.1. The connecting portion 2.2 is connected to the connecting end. When the buckle body 3 is subjected to force, the position of the locking plate 2 is relatively stable, and the connecting portion 2.2 can elastically deform to further cushion the force of the buckle body 3. After the buckle body 3 is released from the force or the force is attenuated, the connecting portion 2.2 can elastically reset to make the structure in a preset position state.

[0073] The bent portion 2.21 of the connection portion 2.2 corresponds to the edges of the upper fixing plate 5 and the lower fixing plate 1, so that the area where elastic deformation and restoration occur only occurs in the connection portion 2.2, and the reliability and service life of the device are further improved.

[0074] The above are merely preferred embodiments of the present invention. The scope of protection of the present invention is not limited to the above embodiments. All technical solutions based on the principles of the present invention are within the scope of protection of the present invention. It should be noted that improvements and modifications that do not depart from the principles of the present invention are within the scope of protection of the present invention.

Claims

1. A silent lock, characterized in that: include: A fixing assembly, the fixing assembly comprising a lower fixing plate (1), the lower fixing plate (1) being connected to the vehicle body; A lock assembly, comprising a lock plate (2) and a buckle body (3) connected to the lock plate (2), wherein the lock plate (2) is placed between the vehicle body and the lower fixing plate (1); A retaining structure, comprising a protrusion (2.1) provided on at least one of the opposite end surfaces of the lower fixing plate (1) and the locking plate (2), and a recess (1.1) provided on at least one of the opposite end surfaces of the lower fixing plate (1) and the locking plate (2) and having a clearance fit with the protrusion (2.1); A buffer portion (4), the buffer portion (4) comprising a first buffer portion (4.1) provided on the locking plate (2) and in contact with the end surface of the fixing plate, and after the protrusion (2.1) and the recess (1.1) cooperate with each other to act on the first buffer portion (4.1), the first buffer portion (4.1) is embedded between the locking plate (2) and the lower fixing plate (1); The buffer portion (4) further includes a second buffer portion (4.2) provided on the locking plate (2) and configured to contact the surface of the vehicle body; The protrusion (2.1) comprises at least one first protrusion (2.11) extending along the horizontal center line A of the locking plate (2), and at least one second protrusion (2.12) extending along the vertical center line B of the locking plate (2). The first protrusion (2.11) and the second protrusion (2.12) intersect at the center of the locking plate (2); The two connecting ends of the buckle body (3) are arranged opposite to each other along the diagonal line C of the locking plate (2), and the two connecting ends are arranged at an intersection of the first protrusion (2.11) and the second protrusion (2.12).

2. A silent lock according to claim 1, characterized in that: There are a plurality of protrusions (2.1), each of which is arranged on the lower end surface of the locking plate (2), and the protrusions (2.1) are arranged in a structure that intersects or does not intersect; The recessed portion (1.1) is arranged on the front end surface of the lower fixing plate (1), and the recessed portion (1.1) is arranged to match the protruding portion (2.1) in terms of position and quantity.

3. The silent lock according to claim 2, characterized in that: The two connecting ends of the buckle body (3) are connected to the locking plate (2) with at least one protrusion (2.1) spaced apart.

4. The silent lock according to claim 1, characterized in that: The lower fixing plate (1) is provided with opposite connection holes (1.2) along a diagonal line D, wherein the connection holes (1.2) are for connecting members to pass through and connect to the vehicle body; The diagonal line D is arranged to intersect with the diagonal line C, and the intersection coincides with the intersection of the first protruding portion (2.11) and the second protruding portion (2.12).

5. The silent lock according to claim 1, characterized in that: The second buffer portion (4.2) is arranged on the front end surface of the locking plate (2) and at a position opposite to the connecting end.

6. The silent lock according to claim 1, characterized in that: The lower fixing plate (1) is formed by stamping to form the recessed portion (1.1), and the locking plate (2) is formed by stamping to form the protruding portion (2.1).

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