Rotary door lock of automobile tool box

Abstract

The invention discloses a rotary door lock of an automobile tool box. The rotary door lock comprises a base, and a notch is formed in the edge, close to one side, of the base; the spring bolt is provided with a locking part, a first matching part and a first connecting part, the spring bolt is rotationally connected with the base, in the locking state, in the thickness direction of the base, the locking part extends out of the notch to cut off at least part of the notch, and in the unlocking state, the locking part does not coincide with the notch; the stopping piece is provided with a second matching part and a second connecting part, the stopping piece is rotationally connected with the base, and the second matching part is used for abutting against the first matching part in the locking state and being separated from the first matching part in the unlocking state; the first connecting part and the second connecting part are connected through the elastic piece, and the elastic piece is used for elastically connecting the first connecting part and the second connecting part to keep the locking state or the unlocking state. Adjusting cooperation among a plurality of springs is not needed, a good cooperation relation is always kept, the design structure is simplified, and the cooperation efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of rotary door locks, in particular to a rotary door lock for an automobile tool box. Background Art

[0002] The rotary door lock of the car tool box is a mechanical locking device used for the cover or drawer of the car tool box. Its main function is to prevent the tools from being scattered due to vibration or accidental opening of the tool box during driving, and it also plays a certain protective role. It plays an important role in ensuring vehicle safety, anti-theft and providing convenience.

[0003] At present, the automobile door lock adopts two springs, which elastically connect the lock tongue and the component used to cooperate with the lock tongue respectively. Although the separate assembly can have a certain degree of elastic force to keep the lock tongue and the component in cooperation or keep them separated, the elastic coefficients and materials of the two springs need to be selected according to strict selection standards. Since the elastic deformations produced by the elastic forces at different stages of the action are different, the elastic properties of the two springs tend to decline after long-term work, and it is impossible to ensure that the automobile door locks they cooperate with always maintain good cooperation performance.

[0004] Therefore, there is still a need for a rotary door lock for an automobile work box to solve the above problems. Summary of the invention

[0005] The present invention provides a rotary door lock for a vehicle tool box which solves the above problems.

[0006] The purpose of the present invention is achieved by the following technical solutions:

[0007] A rotary door lock for a vehicle tool box, comprising:

[0008] A base, wherein a notch is formed at an edge of the base close to one side;

[0009] A locking tongue, the locking tongue having a locking portion, a first matching portion and a first connecting portion, the locking tongue being rotatably connected to the base, and in a locked state, in a thickness direction of the base, the locking portion extending out from the notch to block at least a portion of the notch, and in an unlocked state, the locking portion and the notch do not overlap;

[0010] A stopper, the stopper having a second matching portion and a second connecting portion, the stopper being rotatably connected to the base, the second matching portion being used to abut against the first matching portion in a locked state, and being separated from the first matching portion in an unlocked state;

[0011] An elastic member, wherein the first connection portion and the second connection portion are connected by the elastic member, and is used to elastically connect the first connection portion and the second connection portion to maintain a locked state or an unlocked state.

[0012] In one embodiment, the first matching portion is a side surface formed on the locking tongue, the stopper is further formed with a guide surface adjacent to the first matching portion, the angle between the guide surface and the first matching portion is an obtuse angle, the second matching portion is a side surface formed on the stopper, and the first matching portion and the second matching portion are matched face to face.

[0013] In one embodiment, a guide angle is formed on the stop member adjacent to the first mating portion, and a side curved surface of the guide angle is connected to the second mating portion. During the unlocking process, an external force connected to the second connecting portion drives the stop member to rotate, causing the guide angle to slide along the guide surface and then separate, thereby driving the lock tongue to open the notch.

[0014] In one embodiment, a traction member is also formed on the base, and the traction member includes a connecting sleeve and a traction line. The traction line is connected to a connecting groove on the base through the connecting sleeve, one end of the traction line is connected to the top of the second connecting part on the stopper, and the other end is connected to an external power source.

[0015] In one embodiment, the elastic member is a spring, and in the locked and unlocked states, the angle between the elastic force direction of the spring and the first matching portion is in the range of 40-60 degrees.

[0016] In one embodiment, a through hole is provided on the base, the locking tongue member and the base are connected via a rotating assembly, and the stop member and the base are connected via a rotating assembly;

[0017] The rotating assembly includes: a ratchet plate, a gasket and a ratchet shaft. The ratchet plate and the ratchet shaft are integrally formed. The gasket is respectively attached to both sides of the stopper and the locking tongue. The ratchet plate passes through the gasket to abut and connect to the through hole of the base.

[0018] In one embodiment, a reinforcing rib is formed on the base, the number of the through holes is two, and the two through holes are connected by the extended reinforcing rib.

[0019] In one embodiment, a limiting member is formed on the other side of the base relative to the notch, and the limiting member is formed by bending and is located between the lock tongue and the stop member. Two second limiting members are also formed on the base, one of the second limiting members is located on the side close to the lock tongue, and is used to cooperate with the limiting member to define the rotation angle range of the lock tongue, and the other second limiting member is located on the side close to the lock tongue, and is used to cooperate with the limiting member to define the rotation angle range of the stop member.

[0020] Compared with the prior art, the beneficial effects of the present invention include at least:

[0021] A locking tongue and a stopper are respectively arranged on both sides of the notch arranged on the base, wherein one end of the locking tongue and the stopper are respectively rotatably connected to the base, and the other ends are connected by an elastic member, one end of the elastic member always elastically tightens the locking tongue, and the other end always elastically tightens the stopper, so that when the stopper is in a locked state, the first matching portion and the second matching portion always maintain a highly fitted state, and in an unlocked state, the locking tongue always maintains an open notch state under the pulling action of the elastic force, and always maintains a good opening angle under long-term work, and does not require adjustment and coordination between multiple springs, always maintains a good matching relationship, simplifies the design structure, and improves the matching efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a structural schematic diagram of the state switching of the rotary door lock according to an embodiment of the present invention;

[0023] Figure 2 The structure of the rotary door lock of the embodiment of the present invention is shown in FIG. Figure 1 ;

[0024] Figure 3 The structure of the rotary door lock of the embodiment of the present invention is shown in FIG. Figure 2 ;

[0025] Figure 4 1 is an exploded view of a rotary door lock according to an embodiment of the present invention.

[0026] In the figure: 1. base; 11. notch; 12. connecting groove; 13. through hole; 2. locking tongue; 21. locking part; 22. first matching part; 23. first connecting part; 24. guide angle; 3. stopper; 31. second matching part; 32. second connecting part; 33. guide surface; 4. elastic part; 6. traction part; 61. connecting sleeve; 62. traction line; 7. rotating assembly; 71. ratchet plate; 72. gasket; 73. ratchet shaft; 7. reinforcing rib; 8. limiter; 9. second limiter. DETAILED DESCRIPTION

[0027] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in a variety of forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided to make the present invention more comprehensive and complete and to fully convey the concepts of example embodiments to those skilled in the art. The same reference numerals in the figures represent the same or similar structures, and thus their repeated description will be omitted.

[0028] The words expressing position and direction described in the present invention are all explained by taking the accompanying drawings as examples, but they can be changed as needed, and all changes are included in the protection scope of the present invention.

[0029] Reference Figure 1-4The present invention provides a rotary door lock for a car tool box, comprising: a base 1, a lock tongue 2, a stopper 3 and an elastic member 4. A notch 11 is formed on the base 1 at an edge close to one side, wherein the base 1 may be a sheet metal plate, the plate being a plate of uniform thickness, wherein the notch 11 may be an opening formed on one side, and the opening is used for a hook to pass through. The lock tongue 2 has a locking portion 21, a first matching portion 22 and a first connecting portion 23, the lock tongue 2 is rotatably connected to the base 1, in the locked state, in the thickness direction of the base 1, the locking portion 21 extends out from the notch 11 to block at least part of the notch 11, and in the unlocked state, the locking portion 21 and the notch 11 do not overlap. The locking portion 21 and the first matching portion 22 of the lock tongue 2 are, for example, a C-shaped opening as a whole, and the shape is consistent with the shape of the notch 11 in the locked state.

[0030] Reference Figure 1 The stopper 3 has a second matching portion 31 and a second connecting portion 32. The stopper 3 is rotatably connected to the base 1. The second matching portion 31 is used to abut against the first matching portion 22 in a locked state and to separate from the first matching portion 22 in an unlocked state. The first connecting portion 23 and the second connecting portion 32 can be protrusions perpendicular to the plane of the base 1 formed by bending sheet metal.

[0031] The first connection part 23 and the second connection part 32 are connected by an elastic member 4, which is used to elastically connect the first connection part 23 and the second connection part 32 to maintain a locked state or an unlocked state. When working, one end of the elastic member 4 is fixedly connected to the first connection part 23, and the other end is connected to the second connection part 32. The elastic tension of the spring keeps the first matching part 22 and the second matching part 31 in a close contact state in the locked state, and when the locked state is switched to the unlocked state, after the first matching part 22 and the second matching part 31 are staggered, the second connection part 32 of the lock tongue 2 always remains in an open state under the continued tension of the elastic force. The switching between the complete locking and unlocking of the two mutually cooperating mechanisms can be completed by a single spring, and there will be no problem of motion interference. The two ends of the elastic member 4 always provide an elastic tension trend regardless of whether they are in the unlocked or locked state, and there is no need to use multiple springs to coordinate, so that the lock tongue 2 and the stopper 3 maintain a good matching relationship, and in the switching state, a good smooth transition is maintained to provide a better matching relationship.

[0032] Preferably, the first matching portion 22 is a side surface formed on the lock tongue 2, and the stopper 3 is further formed with a guide surface 33 adjacent to the first matching portion 22, and the angle between the guide surface 33 and the first matching portion 22 is an obtuse angle, and the second matching portion 31 is a side surface formed on the stopper 3, and the first matching portion 22 and the second matching portion 31 are matched face to face. The first matching portion 22 and the second matching portion 31 are two planes or curved surfaces that can be connected face to face, which are not limited here. When the state is switched, part of the side surface of the stopper 3 slides against the guide surface 33 and gradually rotates along the guide surface 33, which can ensure stability when the state is switched, and avoid excessive drop when the lock tongue 2 is flipped, resulting in excessive vibration of the various components connected to the lock tongue 2 and the lock tongue 2 itself, which avoids elastic failure and reduced coordination of mechanical matching over a long period of time.

[0033] Preferably, a guide angle 24 is formed on the lock tongue 2 near the first matching portion 22, and a curved surface on one side of the guide angle 24 is connected to the second matching portion 31. During the unlocking process, the external force connected to the second connecting portion 32 drives the stopper 3 to rotate, so that the guide angle 24 slides along the guide surface 33 and then separates, driving the lock tongue 2 to open the notch 11. The guide angle 24 can be an obtuse chamfer. In the switching state, the guide angle 24 bypasses the second matching portion 31 and then slides along the guide surface 33, so that the spring can shrink quickly, and when it is closer to the unlocking state, the change speed of the spring gradually increases, which can provide stable elasticity and avoid spring failure caused by long-term cyclic use.

[0034] Preferably, a traction member 6 is also formed on the base 1, and the traction member 6 includes a connecting sleeve 61 and a traction line 62. The traction line 62 is connected to the connecting groove 12 on the base 1 through the connecting sleeve 61. One end of the traction line 62 is connected to the top of the second connecting portion 32 on the stopper 3, and the other end is connected to an external power source. The power source can be a linear motor or a screw rod, etc., which is not limited here. By pulling one end of the traction member 6 to drive the stopper 3 to rotate a certain angle, the lock tongue 2 is automatically opened under the action of elastic force, and when locked, the locking portion 21 and the first matching portion 22 of the lock tongue 2 are driven to rotate after the rod-shaped object to be locked passes through, so that the lock tongue 2 is turned over and drives the stopper 3 to rotate a certain angle, and then the first matching portion 22 and the second matching portion 31 are docked and matched to complete the locking.

[0035] Preferably, the elastic member 4 is a spring, and in the locked and unlocked states, the angle between the direction of the elastic force of the spring and the first matching portion 22 is in the range of 40-60 degrees. During movement, the direction of the elastic force of the spring will also rotate, avoiding the elastic force in a single direction, so that the first matching portion 22 and the second matching portion 31 cannot maintain good fit in each state under the decomposed action, resulting in poor mechanical fit and ultimately reduced reliability.

[0036] Preferably, a through hole 13 is opened on the base 1 , and the locking tongue 2 is connected to the base 1 via a rotating assembly 7 , and the stopper 3 is connected to the base 1 via a rotating assembly 7 .

[0037] Reference Figure 4 The rotating assembly 7 includes: a ratchet plate 71, a gasket 72 and a ratchet shaft 73. The ratchet plate 71 and the ratchet shaft 73 are integrally formed. The gasket 72 is respectively attached to both sides of the stopper 3 and the lock tongue 2. The ratchet plate 71 passes through the gasket 72 to abut and connect to the through hole 13 of the base 1. The annular bottom of the ratchet plate 71 abuts the gasket 72, the bottom of the gasket 72 abuts the lock tongue 2 or the stopper 3, and the bottom of the stopper 3 abuts the gasket 72 again, and is rotatably connected to the base 1 through the ratchet shaft 73 at the bottom of the ratchet plate 71, which can maintain a good rotation connection relationship, so that the thick-walled side surfaces of the lock tongue 2 and the stopper 3 always maintain a good fit in the height direction, and maintain a good contact area when locked, to avoid locking failure.

[0038] Preferably, a reinforcing rib 7 is formed on the base 1, the number of the through holes 13 is two, and the two through holes 13 are connected by the extended reinforcing rib 7. The reinforcing rib 7 can be formed by stamping, and the reinforcing rib 7 can enhance the strength of the base 1 when the lock tongue 2 is stretched, so as to prevent the base 1 from being deformed and damaged due to excessive concentration of force on the material near the notch 11 caused by lateral stress during operation.

[0039] Preferably, a limiting member 8 is formed on the other side of the base 1 relative to the notch 11, the limiting member 8 is formed by bending and is located between the lock tongue 2 and the stopper 3, and two second limiting members 9 are also formed on the base 1, one of the second limiting members 9 is located on the side close to the lock tongue 2, and is used to cooperate with the limiting member 8 to define the rotation angle range of the lock tongue 2, and the other second limiting member 9 is located on the side close to the lock tongue 2, and is used to cooperate with the limiting member 8 to define the rotation angle range of the stopper 3. The limiting member 8 is formed on the other side of the base 1 relative to the notch 11, and is formed by bending during manufacturing, for example, so that when the stopper 3 is pulled, the structural strength of the middle position of the base 1 can be improved, and it can also cooperate with the second limiting parts on both sides to limit the rotation angle range of the lock tongue 2 and the stopper 3 respectively, so as to avoid excessive rotation of the lock tongue 2 and the stopper 3, which may cause deformation and damage to the lock tongue 2 and the stopper 3, thereby improving the reliability of the structure.

[0040] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations on the present invention. A person skilled in the art may change, modify, substitute and modify the above embodiments within the scope of the invention without departing from the principles and purpose of the present invention. All such changes should fall within the scope of protection of the claims of the present invention.

Claims

1. A rotary door lock for a car tool box, characterized in that: include: A base, wherein a notch is formed at an edge of the base close to one side; A locking tongue, the locking tongue having a locking portion, a first matching portion and a first connecting portion, the locking tongue being rotatably connected to the base, the locking portion extending out from the notch in the thickness direction of the base to block at least a portion of the notch in a locked state, and the locking portion and the notch not overlapping in an unlocked state; A stopper, the stopper having a second matching portion and a second connecting portion, the stopper being rotatably connected to the base, the second matching portion being used to abut against the first matching portion in a locked state, and being separated from the first matching portion in an unlocked state; An elastic member, wherein the first connection portion and the second connection portion are connected by the elastic member, and is used to elastically connect the first connection portion and the second connection portion to maintain a locked state or an unlocked state.

2. The rotary door lock according to claim 1, characterized in that: The first matching portion is a side surface formed on the locking tongue, the stopper is further formed with a guide surface adjacent to the first matching portion, the angle between the guide surface and the first matching portion is an obtuse angle, the second matching portion is a side surface formed on the stopper, and the first matching portion and the second matching portion are matched face to face.

3. The rotary door lock according to claim 2, characterized in that: A guide angle is formed on the lock tongue near the first matching portion, and a side curved surface of the guide angle is connected to the second matching portion. During the unlocking process, an external force connected to the second connecting portion drives the stopper to rotate, causing the guide angle to slide along the guide surface and then separate, driving the lock tongue to open the notch.

4. The rotary door lock according to claim 1, characterized in that: A traction member is also formed on the base, and the traction member includes a connecting sleeve and a traction line. The traction line is connected to the connecting groove on the base through the connecting sleeve. One end of the traction line is connected to the top of the second connecting part on the stopper, and the other end is connected to an external power source.

5. The rotary door lock according to claim 1, characterized in that: The elastic member is a spring. In the locked and unlocked states, the angle between the elastic force direction of the spring and the first matching portion is in the range of 40-60 degrees.

6. The rotary door lock according to claim 1, characterized in that: The base is provided with a through hole, the locking tongue member and the base are connected via a rotating assembly, and the stop member and the base are connected via a rotating assembly; The rotating assembly includes: a ratchet plate, a gasket and a ratchet shaft. The ratchet plate and the ratchet shaft are integrally formed. The gasket is respectively attached to both sides of the stopper and the locking tongue. The ratchet plate passes through the gasket to abut and connect to the through hole of the base.

7. The rotary door lock according to claim 6, characterized in that: A reinforcing rib is formed on the base, the number of the through holes is two, and the two through holes are connected by the extended reinforcing rib.

8. The rotary door lock according to claim 7, characterized in that: A limiting member is formed on the other side of the base relative to the notch, and the limiting member is formed by bending and is located between the lock tongue and the stop member. Two second limiting members are also formed on the base, one of the second limiting members is located on the side close to the lock tongue, and is used to cooperate with the limiting member to define the rotation angle range of the lock tongue, and the other second limiting member is located on the side close to the lock tongue, and is used to cooperate with the limiting member to define the rotation angle range of the stop member.

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