Protective cover and scale flow adjusting device

Abstract

The utility model relates to the field of protective devices, in particular to a protective cover and a scale flow adjusting device, the protective cover comprises two half shells, a lock catch structure and a key, one sides of the two half shells are rotationally connected, the other sides of the two half shells are locked through the lock catch structure, and the lock catch structure is locked through the key when the two half shells are locked. The two half shells are arranged to be capable of forming a containing cavity surrounding a protected device in a surrounding mode, a key hole matched with the key for unlocking is formed in the lock catch structure, and the lock catch structure comprises a male lock catch and a female lock catch. The male lock catch and the female lock catch are matched with each other to lock the two half shells, a protected device in the containing cavity is protected, and only an operator holding a key can unlock the two half shells to operate the protected device under the condition that the lock catch structure is not damaged. And bad consequences caused by errors when a non-operator operates the protected device are prevented.

Description

Technical Field

[0001] This utility model relates to the field of protective devices, specifically to a protective cover and a scale flow regulating device. Background Technology

[0002] In related technologies, many devices such as scale flow regulators lack external protective devices, making it easy for non-operators to make mistakes and cause adverse consequences. Utility Model Content

[0003] The purpose of this invention is to address the problem that various devices, such as scale flow regulators, lack external protective devices, making it easy for non-operators to make mistakes and cause adverse consequences. This invention provides a protective cover that uses male and female locking buckles to lock the two half-shells together, preventing errors caused by non-operators from causing adverse consequences.

[0004] To achieve the above objectives, this utility model provides a protective cover, including two half-shells, a locking structure and a key. One side of the two half-shells is rotatably connected, and the other side is locked by the locking structure. In the locked state, the two half-shells are configured to enclose and form a receiving cavity surrounding the protected device.

[0005] The latch structure is provided with a keyhole that cooperates with the key to unlock, and the latch structure includes a male latch and a female latch.

[0006] Preferably, a first locking block is provided on the outer side of one of the half-shells, and a second locking block is provided on the outer side of the other half-shell. Two sets of male and female locking buckles are provided and are alternately arranged on the first and second locking blocks.

[0007] The male latch includes a first claw, the female latch includes a first slot into which the first claw engages, and the keyhole includes two first through holes. The two first through holes are respectively disposed on the first locking block and the second locking block, and are respectively connected to their corresponding first slots. After the two half-shells are locked by engaging the first claw into the first slot, the key is inserted into the keyhole and rotated to squeeze and open the first claw to release the lock.

[0008] Preferably, the male latch is disposed on the outside of one of the half-shells, and the female latch is disposed on the outside of the other half-shell.

[0009] Preferably, the male latch includes a third locking block, and the female latch includes a limiting part and a locking part. The limiting part is disposed at the upper end of the locking part, and the third locking block is provided with a second locking groove for the locking part to engage and two second locking claws.

[0010] The keyhole includes a second through hole and a third through hole that are interconnected. The second through hole is disposed through the limiting part, and the third through hole is disposed through the snap-fit ​​part. The snap-fit ​​part has an opening formed through the third through hole on the side away from the third snap-fit ​​block. This opening is used to lock the two half-shells into the second slot after they are snapped into the second slot by the snap-fit ​​part. Then, the key is inserted into the keyhole, and the key is rotated to squeeze and open the two second snap claws to release the lock.

[0011] Preferably, the two sides of the locking portion that engage with the two second claws are beveled.

[0012] Preferably, the male latch includes a fourth locking block, and the female latch includes a fifth locking block. The fourth locking block has a third locking claw, and the fifth locking block has a third locking groove. The keyhole is located at the upper end of the fifth locking block. The third locking claw passes through the third locking groove and extends into the keyhole. After the two half-shells are locked by the third locking claw into the third locking groove and extending into the keyhole, the key is used to align with the keyhole position and squeeze the third locking claw by the key to pop it out of the third locking groove and release the lock.

[0013] Preferably, the top of the third claw is arc-shaped.

[0014] Preferably, the key includes a mating part and a gripping part, the gripping part being disposed at the upper end of the mating part, and the mating part being used to engage with the keyhole for unlocking.

[0015] Preferably, the two semi-shells are provided with a protrusion and a recess on the side where they meet.

[0016] This utility model also provides a scaled flow rate regulating device, including a scaled flow rate regulator and the aforementioned protective cover, wherein the protective cover is fitted over the outside of the scaled flow rate regulator.

[0017] The above technical solution uses male and female latches to lock the two half-shells together, protecting the protected device inside the cavity. Without damaging the latch structure, only the operator with the key can unlock the two half-shells and operate the protected device, preventing unauthorized personnel from operating the protected device and causing errors that could lead to adverse consequences. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the first type of protective cover provided by this utility model in the open state;

[0019] Figure 2 This is a schematic diagram of the structure of the first type of key provided by this utility model;

[0020] Figure 3 This is a schematic diagram of the second type of protective cover provided by this utility model in the open state;

[0021] Figure 4 This is a schematic diagram of the second type of protective cover provided by this utility model in a locked state;

[0022] Figure 5 This is a partial structural diagram of the second type of protective cover provided by this utility model in the unlocked state;

[0023] Figure 6 This is a schematic diagram of the third type of protective cover provided by this utility model in a locked state;

[0024] Figure 7 This is a schematic diagram of the third type of protective cover provided by this utility model in the open state;

[0025] Figure 8 This is a schematic diagram of the structure of the second type of key provided by this utility model.

[0026] Explanation of reference numerals in the attached figures

[0027] 1. Half-shell; 11. Receiving cavity; 12. First locking block; 13. Second locking block; 14. Protrusion; 15. Recess; 2. Key; 21. Fitting part; 221. Cover; 222. Protrusion; 22. Grip part; 3. Keyhole; 31. First through hole; 32. Second through hole; 33. Third through hole; 4. Male lock buckle; 41. First claw; 42. Third locking block; 421. Second slot; 422. Second claw; 423. Insertion slot; 43. Fourth locking block; 431. Third claw; 5. Female lock buckle; 51. First slot; 52. Limiting part; 53. Locking part; 531. Insertion block; 54. Fifth locking block; 541. Third slot. Detailed Implementation

[0028] The specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the scope of this utility model.

[0029] This utility model provides a protective cover, including two half-shells 1, a locking structure, and a key 2. The two half-shells 1 are rotatably connected on one side and locked on the other side by the locking structure. In the locked state, the two half-shells 1 are configured to enclose and form a receiving cavity 11 surrounding the protected device. The size of the two half-shells 1 is not limited and can be equal or unequal. The shape formed when the two half-shells 1 are enclosed can be a cube, cuboid, sphere, etc. The protected device refers to various devices that need to be operated or adjusted by the operator through a control panel, switch, button, knob, etc. The two half-shells 1 are transparent or semi-transparent, so that the scale or status of the protected device inside the receiving cavity 11 can be clearly seen. The upper and lower ends of the two half-shells 1 have toothed inward protrusions or rolled edges to prevent the protected device from being moved out of the protective cover. The locking structure is provided with a keyhole 3 that cooperates with the key 2 to unlock. The locking structure includes a male lock 4 and a female lock 5.

[0030] The key 2 includes a mating part 21 and a gripping part 22. The gripping part 22 is located at the upper end of the mating part 21. The mating part 21 is used to engage with the keyhole 3 for unlocking. The gripping part 22 can be configured as a long handle, a ring, or other shapes to facilitate rotation and insertion / removal of the mating part 21. When the gripping part 22 is a long handle, a round hole can be provided to facilitate attaching a lanyard.

[0031] This utility model also provides a scaled flow rate regulating device, including a scaled flow rate regulator and the aforementioned protective cover. The protective cover is fitted over the outside of the scaled flow rate regulator to protect the scaled flow rate regulator and prevent non-operators from adjusting the flow rate of the outlet by rotating the pointer on the scale. It has been widely used.

[0032] The male lock 4 and the female lock 5 work together to lock the two half-shells 1, protecting the protected device inside the receiving cavity 11. Without damaging the lock structure, only the operator holding the key 2 can unlock the two half-shells 1 and operate the protected device, preventing unauthorized personnel from operating the protected device and causing errors that could lead to adverse consequences.

[0033] In some embodiments of this utility model, see Figure 1 and Figure 2As shown, one half-shell 1 has a first locking block 12 on its outer side, and the other half-shell 1 has a second locking block 13 on its outer side. Two sets of male and female locking latches 4 and 5 are provided, staggered on the first locking block 12 and the second locking block 13. The male locking latch 4 includes a first locking claw 41, and the female locking latch 5 includes a first locking groove 51 into which the first locking claw 41 engages. The keyhole 3 includes two first through holes 31, which are respectively disposed through the first locking block 12 and the second locking block 13, and respectively connected to their corresponding first locking grooves 51. After the two half-shells 1 are locked by the first locking claw 41 engaging in the first locking groove 51, the key 2 is used to insert its elliptical mating part 21 into the keyhole 3 formed by the two first through holes 31. Rotating the gripping part 22 causes the mating part 21 to squeeze and open the first locking claw 41, causing the first locking claw 41 to disengage from its corresponding first locking groove 51, thus releasing the lock.

[0034] In some embodiments of this utility model, see Figures 2-5 As shown, the male latch 4 is located on the outside of one half-shell 1, and the female latch 5 is located on the outside of the other half-shell 1. The male latch 4 includes a third locking block 42, and the female latch 5 includes a limiting part 52 and a locking part 53. The limiting part 52 is located at the upper end of the locking part 53. The third locking block 42 is provided with a second locking groove 421 for the locking part 53 to be engaged and two second locking claws 422. The two sides of the locking part 53 that engage with the two second locking claws 422 are beveled, which makes it easier for the locking part 53 to gradually squeeze and open the two second locking claws 422 to be engaged in the second locking groove 421. The limiting part 52 prevents the locking part 53 from falling off after being engaged in the second locking groove 421. The keyhole 3 includes an elliptical second through hole 32 and a semi-circular third through hole 33 that are interconnected. The second through hole 32 is disposed through the limiting part 52, and the third through hole 33 is disposed through the locking part 53. The side of the locking part 53 away from the third locking block 42 forms an opening through the third through hole 33, which is used for the two half-shells 1 to gradually squeeze and open the two second locking claws 422 by the opposite sides of the locking part 53 until they are fully locked into the second locking groove 421. After locking, the two second locking claws 422 abut against one side of the locking part 53. The key 2 is used to insert its elliptical mating part 21 through the second through hole 32 into the third through hole 33. One end of the mating part 21 is located inside the third through hole 33, and the other end of the mating part 21 is located outside the third through hole 33. The gripping part 22 is rotated to squeeze and open the two second locking claws 422 by the mating part 21, so that the locking part 53 is disengaged from the second locking groove 421 and the lock is released.

[0035] The bottom of the snap-fit ​​part 53 is provided with a plug-in block 531, and the bottom of the third snap-fit ​​block 42 is provided with a plug-in groove 423 for the plug-in block 531 to be inserted. The two second snap-fit ​​claws 422 are located above the plug-in groove 423, which facilitates the snap-fit ​​part 53 to mate with the second snap-fit ​​groove 421.

[0036] In some embodiments of this utility model, see Figures 6-8 As shown, the male latch 4 is located on the outside of one of the half-shells 1, and the female latch 5 is located on the outside of the other half-shell 1. The male latch 4 includes a fourth locking block 43, and the female latch 5 includes a fifth locking block 54. The fourth locking block 43 is provided with a third locking claw 431, and the fifth locking block 54 is provided with a third locking groove 541. The keyhole 3 is located at the upper end of the fifth locking block 54. The third locking claw 431 passes through the third locking groove 541 and extends into the keyhole 3. The top of the third locking claw 431 is arc-shaped, which allows the two half-shells 1 to gradually squeeze the top of the third locking claw 431 so that the third locking claw 431 contacts the inner wall of the third locking groove 541 and is locked into the third locking groove 541 and extends into the keyhole 3. After the top of the third locking claw 431 is opened and abuts against the inner wall of the keyhole 3 to lock, the key 2 is used to align with the keyhole 3. By squeezing the top of the third locking claw 431 with the key 2, it is ejected from the third locking groove 541 to release the lock.

[0037] The mating part 21 includes a cover 221 and a protrusion 222. The protrusion 222 is disposed inside the cover 221. When unlocking, the cover 221 covers the fourth latch 43 and the fifth latch 54. The protrusion 222 presses the third latch 431 in the keyhole 3, causing the male latch 4 and the female latch 5 to pop open inside the cover 221.

[0038] In some embodiments of this utility model, see Figure 1 As shown, the two half-shells 1 are provided with a plurality of protrusions 14 and recesses 15 on the side where they meet. The protrusions 14 and recesses 15 can also be configured to be inserted into each other or to be engaged with each other to prevent misalignment when the two half-shells 1 are connected.

[0039] The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings; however, the present invention is not limited thereto. Within the scope of the technical concept of the present invention, various simple modifications can be made to the technical solution of the present invention. To avoid unnecessary repetition, the present invention will not describe the various possible combinations separately. However, these simple modifications and combinations should also be considered as the content disclosed in the present invention and are all within the protection scope of the present invention.

Claims

1. A protective cover, characterized in that, It includes two half-shells (1), a locking structure and a key (2). One side of the two half-shells (1) is rotatably connected and the other side is locked by the locking structure. In the locked state, the two half-shells (1) are configured to enclose and form a receiving cavity (11) surrounding the protected device. The latch structure is provided with a keyhole (3) that cooperates with the key (2) to unlock, and the latch structure includes a male latch (4) and a female latch (5).

2. The protective cover according to claim 1, characterized in that, One of the half-shells (1) has a first locking block (12) on its outer side, and the other half-shell (1) has a second locking block (13) on its outer side. The male locking buckle (4) and the female locking buckle (5) are provided in two sets and are alternately arranged on the first locking block (12) and the second locking block (13). The male latch (4) includes a first claw (41), the female latch (5) includes a first slot (51) into which the first claw (41) is engaged, and the keyhole (3) includes two first through holes (31). The two first through holes (31) are respectively disposed on the first locking block (12) and the second locking block (13), and are respectively connected to their corresponding first slots (51). After the two half-shells (1) are locked by engaging the first claw (41) into the first slot (51), the key (2) is inserted into the keyhole (3), and the key (2) is rotated to squeeze and open the first claw (41) to release the lock.

3. The protective cover according to claim 1, characterized in that, The male latch (4) is located on the outside of one of the half-shells (1), and the female latch (5) is located on the outside of the other half-shell (1).

4. The protective cover according to claim 3, characterized in that, The male latch (4) includes a third locking block (42), and the female latch (5) includes a limiting part (52) and a locking part (53). The limiting part (52) is disposed at the upper end of the locking part (53). The third locking block (42) is provided with a second locking groove (421) for the locking part (53) to be engaged and two second locking claws (422). The keyhole (3) includes a second through hole (32) and a third through hole (33) that are interconnected. The second through hole (32) is disposed through the limiting part (52), and the third through hole (33) is disposed through the snap-fit ​​part (53). The snap-fit ​​part (53) forms an opening through the third through hole (33) on the side away from the third snap-fit ​​block (42). After the two half-shells (1) are locked by snapping into the second slot (421) through the snap-fit ​​part (53), the key (2) is inserted into the keyhole (3), and the key (2) is rotated to squeeze and open the two second snap claws (422) to release the lock.

5. The protective cover according to claim 4, characterized in that, The two sides of the locking part (53) that engage with the two second claws (422) are beveled.

6. The protective cover according to claim 3, characterized in that, The male latch (4) includes a fourth latch (43), and the female latch (5) includes a fifth latch (54). The fourth latch (43) is provided with a third latch (431), and the fifth latch (54) is provided with a third latch (541). The keyhole (3) is located at the upper end of the fifth latch (54). The third latch (431) passes through the third latch (541) and extends into the keyhole (3). After the two half-shells (1) are locked by the third latch (431) into the third latch (541) and extending into the keyhole (3), the key (2) is used to align with the keyhole (3) and the key (2) is used to squeeze the third latch (431) to pop it out of the third latch (541) to release the lock.

7. The protective cover according to claim 6, characterized in that, The top of the third claw (431) is arc-shaped.

8. The protective cover according to any one of claims 1-7, characterized in that, The key (2) includes a mating part (21) and a gripping part (22). The gripping part (22) is disposed at the upper end of the mating part (21). The mating part (21) is used to engage with the keyhole (3) for unlocking.

9. The protective cover according to any one of claims 1-7, characterized in that, The two half-shells (1) are provided with a protrusion (14) and a recess (15) that cooperate with each other on the side where they meet.

10. A scaled flow rate regulating device, characterized in that, It includes a scaled flow regulator and a protective cover according to any one of claims 1-9, the protective cover being fitted over the outside of the scaled flow regulator.

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