Tool box with powerful lock catch

Abstract

A tool box with a powerful lock catch comprises a box body and a box cover, the rear sides of the box body and the box cover are hinged, and the front sides of the box body and the box cover are locked and positioned through the lock catch; the lock catch comprises a locking plate and a spring bolt plate which are oppositely arranged, the locking plate is fixedly arranged on the front side of the box cover, the lower end of the locking plate is bent to form an upper clamping hook, the lower portion of the spring bolt plate is in sliding fit with the guide plate through a gear and rack mechanism, the upper end of the spring bolt plate is bent to form a lower clamping hook, and the lower portion of the guide plate is rotationally connected with the base. The gear and rack mechanism comprises a rack arranged on the back face of the spring bolt plate and a gear meshed with the rack, the center of the gear is rotationally connected with the guide plate through a positioning shaft, and the positioning shaft penetrates through the front end of the guide plate and is fixedly provided with a rotating disc and provided with a limiting plate used for limiting circumferential rotation of the rotating disc. According to the tool box structure, the spring bolt plate is in sliding fit with the guide plate through the gear and the rack, the telescopic function is achieved, operation is smooth, blocking is not prone to occurring, the spring bolt plate on the box body and the locking plate on the box cover are buckled to form an interlocking structure, and locking force is high.

Description

Technical Field

[0001] This utility model relates to a toolbox with a strong locking buckle. Background Technology

[0002] In our daily lives, we have many electronic devices and small items that are inconvenient to carry. Therefore, we need a dedicated toolbox to solve this problem, also known as a safety protection box. A safety protection box is a safety protection device with advantages such as heat insulation, moisture resistance, and chemical corrosion resistance. Its non-absorbent nature provides excellent protection for the internal instruments. Existing safety protection box locks vary in structure; some are simple but have weak locking force, while others have complex structures with strong locking force, but are more difficult to assemble and operate. Utility Model Content

[0003] To address the shortcomings mentioned above, this utility model provides a toolbox with a strong locking mechanism.

[0004] To achieve the above objectives, this utility model provides a toolbox with a strong locking buckle, including a box body and a box lid, wherein the box body and the box lid are hinged at the rear and locked and positioned at the front by the locking buckle;

[0005] The latch includes a locking plate and a locking tongue plate arranged opposite each other. The locking plate is fixed to the front side of the box cover and its lower end is bent to form an upper hook. The lower part of the locking tongue plate is slidably engaged with the guide plate through a gear and rack mechanism. The upper part of the locking tongue plate is bent to form a lower hook, which interlocks with the upper hook. The lower part of the guide plate is rotatably connected to the base through a pin. The base is fixed to the front side of the box body. The gear and rack mechanism includes a rack on the back of the locking tongue plate and a gear meshing with the rack. The center of the gear is rotatably connected to the guide plate through a positioning shaft. The positioning shaft passes through the guide plate and a turntable is fixedly installed at its front end. The turntable is provided with a limiting plate to restrict the circumferential rotation of the turntable.

[0006] As a further improvement of this utility model, a waist-shaped groove is vertically machined in the middle of the locking tongue plate, and the positioning shaft passes through the waist-shaped groove.

[0007] As a further improvement of this utility model, the guide plate is bent inward on both sides to form flanges, and the flanges enclose a groove for the locking tongue plate to slide.

[0008] As a further improvement of this utility model, the lower part of the guide plate is bent to form a positioning sleeve, the pin passes through the positioning sleeve, and a torsion spring is installed in the middle of the pin.

[0009] As a further improvement of this utility model, the base is provided with ear plates on both sides, and the ear plates are machined with a first through hole for the pin to pass through.

[0010] As a further improvement of this utility model, one end of the limiting plate is rotatably connected along the radial direction of the turntable, and the other end of the limiting plate is machined with a limiting groove for the ear plate to pass through. The part of the ear plate that passes through the limiting groove is machined with a second through hole for installing a padlock.

[0011] The beneficial effects of this utility model are as follows:

[0012] In this toolbox structure, the locking tongue plate uses a gear rack and a guide plate to form a sliding fit, realizing the extension and retraction function of the locking tongue plate. The operation is smooth and not easy to jam. The locking tongue plate on the box body and the locking plate on the box cover interlock to form an interlocking structure with strong locking force. Attached Figure Description

[0013] Figure 1 This is a front view of a toolbox with a strong locking mechanism according to the present invention;

[0014] Figure 2 for Figure 1 Sectional view along line AA;

[0015] Figure 3 This is an assembly structure diagram of the locking tongue plate 4 and the guide plate 5;

[0016] Figure 4 This is a cross-sectional view of guide plate 5.

[0017] In the diagram: 1. Box body; 2. Box cover; 3. Locking plate; 31. Upper hook; 4. Locking tongue plate; 41. Lower hook; 42. Waist-shaped groove; 5. Guide plate; 51. Flanged edge; 52. Positioning sleeve; 6. Pin; 7. Torsion spring; 8. Limiting plate; 81. Limiting groove; 9. Base; 91. Ear plate; 92. First through hole; 93. Second through hole; 10. Rack; 11. Gear; 12. Positioning shaft; 13. Turntable. Detailed Implementation

[0018] like Figure 1 As shown, the toolbox with a strong locking buckle of this utility model includes a box body 1 and a box cover 2. The box body 1 and the box cover 2 are hinged at the rear and locked and positioned at the front by the locking buckle.

[0019] The latch includes a locking plate 3 and a locking tongue plate 4 arranged opposite to each other. The locking plate 3 is fixed to the front side of the cover 2 and its lower end is bent to form an upper hook 31. The lower part of the locking tongue plate 4 is slidably engaged with the guide plate 5 through a gear and rack mechanism. The guide plate 5 is bent inward on both sides to form flanges 51, which enclose a groove for the locking tongue plate 4 to slide. The upper end of the locking tongue plate 4 is bent to form a lower hook 41, which interlocks with the upper hook 31. The lower part of the guide plate 5 is rotatably connected to the base 9 through a pin 6. The lower part of the guide plate 5 is bent to form a positioning sleeve 52, through which the pin 6 passes. A torsion spring 7 is installed in the middle of the pin 6. The base 9 is fixed to the front side of the cover 1. The base 9 has ear plates 91 on both sides, and an additional... The first through hole 92 allows the pin shaft 6 to pass through. The gear and rack mechanism includes a rack 10 located on the back of the latch plate 4 and a gear 11 meshing with the rack 10. The center of the gear 11 is rotatably connected to the guide plate 5 via a positioning shaft 12. After the positioning shaft 12 passes through the guide plate 5, the front end of the turntable 13 is fixedly installed. The turntable 13 is provided with a limiting plate 8 to limit the circumferential rotation of the turntable 13. One end of the limiting plate 8 is rotatably connected along the radial direction of the turntable 13, and the other end of the limiting plate 8 is machined with a limiting groove 81 for the ear plate 91 to pass through. The part of the ear plate 91 that passes through the limiting groove 81 is machined with a second through hole 93 for installing a padlock. The middle of the latch plate 4 is vertically machined with a waist-shaped groove 42, and the positioning shaft 12 passes through the waist-shaped groove 42.

[0020] In this toolbox structure, the locking tongue plate uses a gear rack and a guide plate to form a sliding fit, realizing the extension and retraction function of the locking tongue plate. The operation is smooth and not easy to jam. The locking tongue plate on the box body and the locking plate on the box cover interlock to form an interlocking structure with strong locking force.

[0021] In practical use, for ease of understanding of this utility model, it will be described in conjunction with the accompanying drawings;

[0022] When the box body and lid are locked, the limiting plate is flipped to the axis of the turntable. The limiting plate rotates counterclockwise along the circumference of the turntable, and the gear set on the same axis as the turntable rotates synchronously. The rotation of the gear is converted into the linear motion of the rack. The rack drives the locking tongue plate to move upward. Then, the lower hook at the end of the locking tongue plate engages with the upper hook on the locking plate on the front side of the lid. Then, the limiting plate is rotated in the opposite direction. The rack drives the locking tongue plate to move downward. The upper hook and the lower hook pull each other together. After it is in place, the limiting plate is flipped down. The front ends of the ear plates on both sides of the base fit through the limiting groove at the bottom of the limiting plate. A padlock can be used at the second through hole at the front end of the ear plate to form a double locking effect.

[0023] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A tool box with a strong lock, characterized by: The utility model provides a box, including box (1), box cover (2), the box (1) and the box cover (2) rear side articulates and front side is locked and positioned through the lock catch, The lock catch includes opposite lock plate (3), lock bolt plate (4), the lock plate (3) is fixed on the front side of the box cover (2) and the lower end is bent to form upper hook (31), the lower part of lock bolt plate (4) is slidably connected with guide plate (5) through rack and pinion mechanism, the upper end of lock bolt plate (4) is bent to form lower hook (41) and forms interlocking structure with the upper hook (31), the lower part of guide plate (5) is rotatably connected with base (9) through pin shaft (6), the base (9) is fixed on the front side of the box (1), the rack and pinion mechanism includes rack (10) arranged on the back of lock bolt plate (4), gear (11) engaged with the rack (10), the center of gear (11) is rotatably connected with guide plate (5) through positioning shaft (12), the positioning shaft (12) passes through the rear and front end fixed installation turntable (13) of guide plate (5), the limiting plate (8) is arranged on the turntable (13) for limiting the circumferential rotation of turntable (13).

2. A tool box with a strong lock according to claim 1, characterized in that: The middle part of lock bolt plate (4) is vertically processed waist type groove (42), and the positioning shaft (12) is matched along the waist type groove (42).

3. A tool box with a strong lock according to claim 1, characterized in that: The both sides of guide plate (5) are inwardly bent to form flanging (51), and the flanging (51) is surrounded to form a sliding groove for the sliding of lock bolt plate (4).

4. The tool box with a strong lock according to claim 1, characterized in that: The lower part of guide plate (5) is bent to form positioning sleeve (52), the pin shaft (6) passes through the positioning sleeve (52), and the pin shaft (6) is provided with torsional spring (7) in the middle part.

5. The tool box with a strong lock according to claim 1, characterized in that: The both sides of base (9) are provided with ear plate (91), and the first through hole (92) is processed on the ear plate (91) for the pin shaft (6) to pass through.

6. A tool box with a strong lock according to claim 5, characterized in that: One end of limiting plate (8) is rotatably connected along the radial direction of turntable (13), the other end of limiting plate (8) is processed limiting groove (81) for the ear plate (91) to pass through, and the part of ear plate (91) passing through limiting groove (81) is processed second through hole (93) for installing padlock.

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