Protective box

Abstract

The utility model relates to a protection box which comprises a box body and a box cover, a lock catch is arranged on the box cover and comprises a first connecting part and a second connecting part, the upper end of the first connecting part is rotationally connected with the box cover, a clamping part is arranged on the inner side of the first connecting part, and the first connecting part is clamped with the box body through the clamping part; the middle of the second connecting part is movably connected with the first connecting part, the joint is located on the side face of the clamping part, the upper end of the second connecting part can be connected with the inner side of the first connecting part, and a limiting pin is movably arranged at the position, corresponding to the second connecting part, of the box body and can be connected with the second connecting part. The clamping part on the first connecting part can be pulled through the second connecting part, opening is convenient, and the first connecting part can be pressed to be closed through the second connecting part; the limiting pin is arranged on the side face of the second connecting part, the second connecting part can be fixed through the limiting pin, the locking effect is achieved, the lock catch is prevented from loosening, and tight connection is guaranteed.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of instrument protection, in particular to a protection box. BACKGROUND

[0002] The safety protection box is used for placing some valuable equipment such as lamps, instruments, etc., and can play a better protection role. The existing protection box generally has a box body and a box cover which can be opened and closed relative to the box body, and a lock catch structure is arranged on the box body and the box cover to lock the box body and the box cover. For example, a safety box lock catch is disclosed in Chinese Patent No. CN214943284U, published on November 30, 2021, which comprises a lock catch upper fixing part, an unlocking button movably arranged on the top of the lock catch upper fixing part, an extension spring movably arranged on the bottom side of the lock catch upper fixing part, a lock block movably connected to the bottom end of the extension spring, an activity shaft movably connected to the middle part of the lock block, the two ends of the activity shaft movably connected with the inner wall of the lock catch upper fixing part, the top end of the extension spring extending into the inside of the lock catch upper fixing part and fixedly connected with a limiting cylinder outside, a supporting seat fixedly connected with the top of the limiting cylinder, and a torsion spring fixedly connected with the middle part of the supporting seat.

[0003] The above-mentioned application can make the unlocking pressure rod press down the top end of the lock block by setting the pressing unlocking button, at this time the other end of the top of the lock block will move upward, which can make the second tooth from the clamping position to disengage, so as to unlock the safety box, which is convenient and has certain labor-saving effect. According to the related technology in the above, the inventor believes that although the application is convenient and labor-saving, the waterproof effect of the box body is hard due to the arrangement of the extension spring inside, so a protection box with simple structure, convenient opening and closing and waterproof should be designed. CONTENT OF THE UTILITY MODEL

[0004] The present application provides a protection box with simple structure, convenient opening and closing and waterproof.

[0005] The protection box provided by the present application adopts the following technical scheme:

[0006] A protection box comprises a box body and a box cover, a lock catch is arranged on the box cover, the lock catch comprises a first connecting part and a second connecting part, the upper end of the first connecting part is rotatably connected with the box cover, the inner side of the first connecting part is provided with a clamping part and is clamped with the box body through the clamping part, the middle part of the second connecting part is movably connected with the first connecting part and the connecting part is located on the side of the clamping part, the upper end of the second connecting part can be connected with the inner side of the first connecting part, a limiting pin is movably arranged on the box body corresponding to the position of the second connecting part, and the limiting pin can be connected with the second connecting part.

[0007] Preferably, the lower end of the first connecting part is provided with a protruding part, the inner side of the protruding part is vertically provided with the clamping part, the width of the protruding part is smaller than the width of the first connecting part, the middle part of the second connecting part is rotationally connected on both sides of the protruding part, the upper end of the second connecting part is a slope and is connected with the first connecting part through the slope, the lower part of the second connecting part is inwardly provided with a bending part, and the limiting pin can be connected with the bending part.

[0008] Preferably, a spacing is provided between the clamping part and the lower end of the protruding part, and a connecting plate is provided between the clamping part and the lower end of the protruding part.

[0009] Preferably, the width of the protruding part is smaller than the width of the clamping part, and the inner side of the second connecting part can be connected with the clamping part.

[0010] Preferably, a plurality of fixed slots are provided in the box body, an L-shaped support plate is movably arranged in the fixed slot, and an inner lining is arranged on the L-shaped support plate.

[0011] Preferably, an automatic fixed air pressure valve is arranged on the box body.

[0012] Preferably, a ring-shaped protruding part is arranged on the upper end of the box body, a sealing rubber strip is embedded in the ring-shaped protruding part, and a ring-shaped groove is arranged on the box cover corresponding to the position of the ring-shaped protruding part.

[0013] Preferably, the box body and the box cover are rotationally connected, and a fixed lock hole is arranged on the side of the box body and the box cover away from the rotational connection.

[0014] In summary, the present application has at least one of the following beneficial technical effects:

[0015] 1. The present application divides the lock into a first connecting part and a second connecting part, the first connecting part is provided with a clamping part for clamping the box body, which can ensure the connection between the box cover and the box body, the middle part of the second connecting part is movably connected with the first connecting part, and the upper end of the second connecting part can be connected with the inner side of the first connecting part, the clamping part on the first connecting part can be pulled through the second connecting part, which is convenient to open, and the first connecting part can be pressed to close through the second connecting part; a limiting pin is arranged on the side of the second connecting part, the second connecting part can be fixed through the limiting pin to realize the locking effect, avoid the lock from loosening, and ensure the tight connection.

[0016] 2. By setting a protruding part at the lower end of the first connecting part, and rotating the second connecting part on the protruding part, the upper end of the second connecting part is inclined to ensure that the second connecting part can press the first connecting part to move; by setting a connecting plate between the clamping part and the lower end of the protruding part, the overall strength can be increased, and the rotating connection point of the second connecting part and the protruding part is located on the side of the clamping part. When the second connecting part is pulled, the second connecting part can drive the first connecting part to move, facilitating opening and closing.

[0017] 3. By setting a fixed slot in the box body and movably setting an L-shaped support plate in the fixed slot, the inner liner can be conveniently connected and fixed; by setting an automatic air pressure valve on the box body, the internal and external air pressure balance can be ensured, and the situation that the internal and external pressure difference leads to inability to open can be avoided; by setting an annular protrusion and an annular groove and a sealing rubber strip on the box body and the box cover, the sealing property of the box body is ensured, and the waterproof effect is good; by setting a fixed lock hole on the box body, the safety can be improved by locking, and the use is convenient. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is a structure schematic diagram of the protective box in the preferred embodiment of the present application.

[0019] Figure 2 is a structure schematic diagram of the protective box when opened in the preferred embodiment of the present application.

[0020] Figure 3 is a structure schematic diagram of the protective box after removing the inner liner in the preferred embodiment of the present application.

[0021] Figure 4 is a structure schematic diagram of the L-shaped support plate in the preferred embodiment of the present application.

[0022] Figure 5 is a structure schematic diagram of the lock catch in the preferred embodiment of the present application.

[0023] Figure 6 is a structure schematic diagram of the lock catch from another perspective in the preferred embodiment of the present application

[0024] Figure 7 is an exploded view of the lock catch in the preferred embodiment of the present application.

[0025] Figure 8 is an exploded view of the lock catch from another perspective in the preferred embodiment of the present application

[0026] Marked: 1, box body; 101, limit pin; 102, fixed slot; 103, L-shaped support plate; 104, fixed lock hole; 2, box cover; 3, lock catch; 301, first connecting part; 301a, clamping part; 301b, protruding part; 302, second connecting part; 302a, bent part; 4, inner liner; 5, balance air pressure valve; 6, sealing rubber strip. Detailed Implementation

[0027] The present application will be further described in detail below with reference to the accompanying drawings.

[0028] This application discloses a protective box.

[0029] Reference Figures 1 to 8 A protective case includes a case body 1 and a case cover 2. The case cover 2 is provided with a latch 3. The case body 1 and the case cover 2 are rotatably connected. The case body 1 and the case cover 2 are provided with a fixing lock hole 104 on the side away from the rotatable connection. The upper end of the case body 1 is provided with an annular protrusion and a sealing strip 6 is embedded in the annular protrusion. The case cover 2 is provided with an annular groove at the position corresponding to the annular protrusion. Multiple fixing slots 102 are provided inside the case body 1. An L-shaped support plate 103 is movably arranged in the fixing slot 102. An inner liner 4 is provided on the L-shaped support plate 103. An automatic balancing air pressure valve 5 is provided on the case body 1.

[0030] Reference Figures 3 to 8 The latch 3 includes a first connecting part 301 and a second connecting part 302. The upper end of the first connecting part 301 is rotatably connected to the lid 2. The inner side of the first connecting part 301 is provided with a snap-fit ​​part 301a and snaps with the box body 1 through the snap-fit ​​part 301a. The lower end of the first connecting part 301 is provided with a protrusion 301b and the snap-fit ​​part 301a is vertically provided on the inner side of the protrusion 301b. The width of the protrusion 301b is smaller than the width of the first connecting part 301, and the width of the protrusion 301b is smaller than the width of the snap-fit ​​part 301a. Specifically, in this embodiment, the width of the snap-fit ​​part 301a is larger than the width of the first connecting part 301. There is a gap between the lower ends of the snap-fit ​​part 301a and the protrusion 301b. A connecting plate is provided between the lower ends of the snap-fit ​​part 301a and the protrusion 301b. The inner side of the second connecting part 302 can connect with the snap-fit ​​part 301a.

[0031] Reference Figure 7 and Figure 8 The middle part of the second connecting part 302 is movably connected to the first connecting part 301, and the connection point is located on the side of the snap-fit ​​part 301a. Specifically, the middle part of the second connecting part 302 is rotatably connected to both sides of the protrusion 301b. The upper end of the second connecting part 302 can connect with the inner side of the first connecting part 301. A limiting pin 101 is movably provided on the housing 1 corresponding to the position of the second connecting part 302. The limiting pin 101 can connect with the second connecting part 302. Specifically, the upper end of the second connecting part 302 is a slope and connects with the first connecting part 301 through the slope. The lower part of the second connecting part 302 is provided with a bent part 302a inward, and the limiting pin 101 can connect with the bent part 302a.

[0032] The implementation principle is that: the lock catch is divided into a first connecting part 301 and a second connecting part 302, the first connecting part 301 is provided with a clamping part 301a clamped with the box body 1, the connection between the box cover 2 and the box body 1 can be ensured, the middle part of the second connecting part 302 is movably connected with the first connecting part 301, and the upper end of the second connecting part 302 can be connected with the inner side of the first connecting part 301; the clamping part 301a on the first connecting part can be pulled through the second connecting part, the opening is facilitated, meanwhile, the first connecting part 301 can be pressed and closed through the second connecting part 302; the limiting pin is arranged on the side of the second connecting part 302, the second connecting part 302 can be fixed through the limiting pin, the locking effect is realized, the lock catch is prevented from loosening, and the connection is ensured to be tight.

[0033] The above are preferred embodiments of the application, and do not limit the protection scope of the application, so: equivalent changes made according to the structure, shape, principle of the application should be covered in the protection scope of the application.

Claims

1. A protection case characterized by: The utility model provides a box, including box (1) and box cover (2), be provided with lock catch (3) on box cover (2), lock catch (3) includes first connecting part (301) and second connecting part (302), the upper end of first connecting part (301) is rotatably connected with box cover (2), and the inner side of first connecting part (301) is provided with the clamping portion (301a) and is clamped with box (1) through the clamping portion (301a), the middle part of second connecting part (302) is movably connected with first connecting part (301) and the connecting place is located the side of clamping portion (301a), and the upper end of second connecting part (302) can be connected with the inner side of first connecting part (301), and the position of box (1) corresponding second connecting part (302) is movably provided with the limiting pin (101), and the limiting pin (101) can be connected with second connecting part (302).

2. A security case according to claim 1, wherein: The lower end of first connecting part (301) is provided with the protruding portion (301b) and the inner side of protruding portion (301b) is vertically provided with the clamping portion (301a), and the width of protruding portion (301b) is less than the width of first connecting part (301), and the middle part of second connecting part (302) is rotatably connected on both sides of protruding portion (301b), and the upper end of second connecting part (302) is inclined and connected with first connecting part (301) through the inclined surface, and the lower part of second connecting part (302) is provided with the bending portion (302a) inward, and the limiting pin (101) can be connected with the bending portion (302a).

3. A security case according to claim 2, wherein: The distance is arranged between the clamping portion (301a) and the lower end of protruding portion (301b), and the connecting plate is arranged between the clamping portion (301a) and the lower end of protruding portion (301b).

4. A security case according to claim 2, wherein: The width of protruding portion (301b) is less than the width of clamping portion (301a), and the inner side of second connecting part (302) can be connected with the clamping portion (301a).

5. The shielded case of claim 1, wherein: A plurality of fixed slots (102) are arranged in the box (1), and an L-shaped support plate (103) is movably arranged in the fixed slot (102), and an inner liner (4) is arranged on the L-shaped support plate (103).

6. A security case according to claim 1, wherein: An automatic fixing air pressure valve (5) is arranged on the box (1).

7. The shielded case of claim 1, wherein: A ring-shaped convex portion is arranged on the upper end of the box (1), and a sealing rubber strip (6) is embedded in the ring-shaped convex portion, and a ring-shaped groove is arranged on the box cover (2) corresponding to the position of the ring-shaped convex portion.

8. The security case of claim 1, wherein: The box (1) is rotatably connected with the box cover (2), and a fixed lock hole (104) is arranged on the side of the box (1) and the box cover (2) away from the rotatable connection.

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