Explosion-proof protective shell
By designing bending paths, push keys, and explosion-proof bolts in the explosion-proof protective shell, the safety issues of electronic devices in the event of sparks or explosions in hazardous environments are solved. This achieves buffering and leakage prevention of explosive gases and flames, improving safety and stability in use.
Patent Information
- Application Number
- CN202520461184.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Priority Date
- 2024-12-26
- Filing Date
- 2025-03-17
- Publication Date
- 2026-02-13
- Estimated Expiration
- 2035-03-17
AI Technical Summary
Electronic devices used in hazardous environments may have their protective casings shattered due to sparks or explosions, resulting in user injury or industrial accidents. Existing technologies are insufficient to effectively prevent the leakage of explosive gases or flames.
An explosion-proof protective shell was designed, which includes a bent explosion-proof path, a push key, explosion-proof bolts, and a composite filler. These structures buffer explosive gases and flames, prevent leakage, and ensure the bolt locking status is visible through an anti-opening gate plate.
It effectively reduces or blocks explosive gases and flames, ensuring the safety and stability of electronic devices in hazardous environments, preventing the protective casing from shattering, and improving operational convenience and safety.
Smart Images
Figure CN223912705U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the field of protective shell, especially the protective shell suitable for containing electronic device. BACKGROUND
[0002] In the modern society of scientific and technological progress, electronic devices have been widely used in various industries. However, in the special or severe harsh environment of industrial use, high temperature, low temperature, rain, dirt, dust, mud, snow and moisture may cause the electronic device to malfunction. In addition, the electronic device may also be damaged due to improper use (for example: falling). Therefore, it is necessary to use a specially made protective shell to contain and protect the electronic device, prevent the electronic device from being damaged by harsh environmental conditions and improper use, and help the user to complete their work or task.
[0003] On the other hand, when the electronic device contained in the protective shell operates under the environmental conditions of the hazardous location, especially in the environment containing dangerous gas or dust, it may cause the body to generate sparks or explosions due to some unpredictable reasons. Once the body of the electronic device generates sparks or explosions, the gas pressure and flame generated by the explosion may cause the protective shell to burst at the same time, causing the user to be injured, and even may cause large-scale explosion of the overall hazardous environment, which seriously endangers the safety of the workplace.
[0004] Therefore, how to provide an explosion-proof protective shell that meets the regulatory specifications to avoid injury to the user or colleagues in the hazardous location, or even cause serious work safety accidents, is the technical problem to be solved by the utility model. SUMMARY
[0005] According to the foregoing description, the main purpose of the utility model is to provide an explosion-proof protective shell suitable for installing electronic devices, which can prevent the protective shell from bursting when the electronic device generates sparks or explosions in the hazardous location, and can reduce or block the leakage of explosion gas or flame from the explosion-proof protective shell.
[0006] To achieve the foregoing purpose, the utility model provides a kind of explosion-proof protective shell, with the space for containing electronic device, explosion-proof protective shell includes: first shell, second shell and push key.The first shell is annularly provided with first combination part;Second shell is annularly provided with second combination part, and second combination part is combined with first combination part, and second combination part has perforation, and perforation has opposite first opening end and second opening end, and second opening end is located on the outer wall surface of second shell.Second shell further includes: key slot, and first opening end is communicated with key slot.Push key has push part and push rod connected with push part, push part is arranged in key slot, push rod is arranged in perforation, and the end of push rod away from push part is partially exposed in second opening end.The linear distance of first opening end and second opening end along the first direction is equal to the section size of second combination part along the first direction.
[0007] The utility model further provides a kind of explosion-proof protective shell, with the space for containing electronic device, explosion-proof protective shell includes: first shell, second shell, explosion-proof bolt and anti-opening gate piece.The first shell is annularly provided with first combination part;Second shell is annularly provided with second combination part, and second combination part is combined with first combination part.Second shell includes threaded through-hole, and threaded through-hole penetrates second combination part.Explosion-proof bolt has rotating holding part and rotating shaft arranged on the axis of rotating holding part, and rotating shaft includes: first shaft part and second shaft part, and first shaft part can be screwed in threaded through-hole;Second shaft part connects rotating holding part and first shaft part.Anti-opening gate piece is arranged on one side of threaded through-hole, and it includes: first end and second end, and first end is hinged to second combination part, so that anti-opening gate piece can be rotated relative to second combination part;Second end has engaging recess on the side towards explosion-proof bolt, and engaging recess corresponds to second shaft part.When first shaft part is rotated into threaded through-hole to locking position, engaging recess and second shaft part interfere with each other, and can be forced into and engaged on second shaft part.
[0008] The utility model further provides a kind of explosion-proof protective shell, with the space for containing electronic device, explosion-proof protective shell includes: first shell and second shell.The first shell is annularly provided with first combination part, and the inner wall surface of first combination part has annular wall part, and wall part has first shape surface;Second shell is annularly provided with second combination part, and second combination part is combined with first combination part, and the inner wall surface of second combination part has annular block body part, and block body part has second shape surface corresponding to first shape surface.When first combination part and second combination part are combined with each other, first shape surface and second shape surface form the bending explosion-proof path.
[0009] The utility model discloses further provide a kind of explosion-proof protective shell, with accommodating space for accommodating electronic device, electronic device has button, explosion-proof protective shell includes: first shell, second shell and push key. First shell ring is equipped with first combination part, second shell ring is equipped with second combination part, second combination part is combined with first combination part, second combination part has the perforation of penetration, perforation has opposite first opening end and second opening end, second opening end is located the outer wall of second shell. Second shell further includes button slot, button slot corresponds to button, and first opening end is communicated with button slot. Push key has push part and the push rod connected with push part, push part is configured in button slot and is used to push button, push rod is configured in perforation, and the end of push rod away from push part partially exposes second opening end. Wherein, push part has push bump, which is in contact with the surface of button, and the orthogonal projection area of push bump is less than the orthogonal projection area of button.
[0010] The utility model discloses further provide a kind of explosion-proof protective shell, with accommodating space for accommodating electronic device, electronic device has button, explosion-proof protective shell includes: first shell, second shell and push key. First shell ring is equipped with first combination part;Second shell ring is equipped with second combination part, second combination part is combined with first combination part, second combination part has the perforation of penetration, perforation has opposite first opening end and second opening end, second opening end is located the outer wall of second shell. Second shell further includes button slot corresponding to button, and first opening end is communicated with button slot. Push key has push part and the push rod connected with push part, push part is configured in button slot and is used to push button. Push rod is configured in perforation, and the end of push rod away from push part partially exposes second opening end. Wherein, push key includes nonmetallic gasket, nonmetallic gasket is configured between push part and button, so that push part can push button through nonmetallic gasket.
[0011] The utility model has the advantages that the explosion-proof protective shell can effectively reduce or block the explosion gas and flame generated when the electronic device explodes by the design of the special push key, the bent explosion-proof path and the configuration or filling of the composite filler, thereby achieving the effect of explosion buffering. In addition to the rotating grip part for facilitating rotation by the user, the explosion-proof bolt is also provided with an anti-opening gate piece corresponding to the explosion-proof bolt on one side of the threaded hole. The anti-opening gate piece can prevent the explosion-proof bolt from being opened or loosened without active intention, and the user can visually confirm whether the explosion-proof bolt is in the locked state, thereby ensuring the safety and stability of the electronic device operating in the explosion-proof protective shell. BRIEF DESCRIPTION OF DRAWINGS
[0012] FIG. 1A It is the three-dimensional schematic view of the explosion-proof protective shell provided by the utility model;
[0013] FIG. 1B is the perspective view of the explosion-proof protective shell provided by the utility model;
[0014] FIG. 2A is the perspective view of the explosion-proof protective shell provided by the utility model; FIG. 1A is the sectional view of the first embodiment along the line segment A-A';
[0015] FIG. 2B is the sectional view of the push key and the key slot provided by the utility model;
[0016] FIG. 3 is the perspective view of the explosion-proof protective shell provided by the utility model; FIG. 2B is the schematic diagram of the operation of the push key in the utility model;
[0017] FIG. 4A is the perspective view of the explosion-proof protective shell provided by the utility model; FIG. 1A is the sectional view of the second embodiment along the line segment A-A';
[0018] FIG. 4B is the perspective view of the explosion-proof protective shell provided by the utility model; FIG. 1A is the sectional view of the third embodiment along the line segment A-A';
[0019] FIG. 5A is the perspective view of the explosion-proof protective shell provided by the utility model;
[0020] FIG. 5B is the perspective view of the explosion-proof protective shell provided by the utility model;
[0021] FIG. 6A is the schematic diagram of the operation of the explosion-proof bolt and the anti-opening gate piece in the utility model; FIG. 6B
[0022] FIG. 7 is the schematic diagram of the filling of the composite filling body in the explosion-proof protective shell provided by the utility model;
[0023] FIG. 8A is the perspective view of the explosion-proof protective shell provided by the utility model; FIG. 9A
[0024] is the side view perspective of the first embodiment of the push key provided by the utility model; FIG. 8B
[0025] is the projection schematic diagram of the first embodiment of the push key in the moving direction thereof; FIG. 8C
[0026] is the projection schematic diagram of the second embodiment of the push key in the moving direction thereof; and FIG. 8D
[0027] FIG. 9B It is a side view perspective of the second embodiment of the push key provided by the utility model. DETAILED DESCRIPTION
[0028] The advantages and features of the present utility model and the method of achieving the same will be more easily understood by referring to the exemplary embodiments and the accompanying drawings. However, the present utility model can be realized in different forms and should not be understood as being limited to the embodiments stated herein. On the contrary, those skilled in the art will appreciate the scope of the present utility model more thoroughly and completely by the provision of such embodiments.
[0029] First, please refer to FIG. 1A and FIG. 1B The utility model provides a kind of explosion-proof protective shell 1, it can be used to accommodate electronic device (not shown in figure).The electronic device can be tablet computer or smart phone, it has touch panel, back relative to touch panel and between touch panel and back side, wherein, side is usually provided with one or more keys, and at least one electrical interface, electrical interface can be but not limited to: USB-A, Micro-USB, Lightning or USB-C.
[0030] Explosion-proof protective shell 1 includes: first shell 10, second shell 20, transparent plate 30, anti-collision clamping mechanism 40, push key 50, elastomer 60, explosion-proof bolt 70, anti-opening gate piece 80, hanging rope 90 and locking piece F1, F2.
[0031] First shell 10 includes: first combination part 11 and frame body opening 12, wherein, first combination part 11 is arranged on the side of first shell 10 facing second shell 20, and is arranged around frame body opening 12, in the present embodiment, the inner wall surface of first combination part 11 has ringed wall body part 111;Transparent plate 30 can be fixed in the way such as clamping, fitting or sticking at frame body opening 12, so when installing electronic device in explosion-proof protective shell 1, user can operate electronic device through transparent plate 30.
[0032] The second housing 20 comprises a second coupling portion 21, one or more key slots 22, one or more through holes 23, a threaded through hole 24, and a frame recess 25. The second coupling portion 21 is disposed on the side of the second housing 20 facing the first housing 10 and is disposed around the frame recess 25. In the present embodiment, the inner wall surface of the second coupling portion 21 has a ring-shaped block portion 211. The key slots 22 are disposed in the frame recess 25 and are adjacent to the second coupling portion 21 and correspond to one or more keys on the side of the electronic device. In the present embodiment, the key slots 22 are formed by a plurality of partition structures 221. In other possible embodiments, a hollow notch can be formed on the side wall of the second coupling portion 21 adjacent to the frame recess 25 as the key slot 22. The through holes 23 are disposed in the second coupling portion 21 and penetrate the second coupling portion 20. The other opening end of the through hole 23 opposite to the opening end of the outer wall surface of the second housing 20 corresponds to the key slot 22.
[0033] The threaded through hole 24 also penetrates the second coupling portion 20 and corresponds to the electrical interface on the side of the electronic device. In the present embodiment, the inner surface of the threaded through hole 24 has an internal thread structure 241.
[0034] The first coupling portion 11 of the first housing 10 can be coupled with the second coupling portion 21 of the second housing 20. In the present embodiment, a plurality of locking members F1 can be screwed into a plurality of locking holes on the first coupling portion 11 and the second coupling portion 21 to couple the first housing 10 and the second housing 20. The anti-collision clamping mechanism 40 can simultaneously clamp and further fix the first housing 10 and the second housing 20. In the present embodiment, the anti-collision clamping mechanism 40 can also be locked and coupled to the four corners of the first housing 10 and the second housing 20 by using a plurality of locking members F1.
[0035] The push key 50 has a push portion 51 and a push rod 52 connected to the push portion 51, wherein the push portion 51 is disposed in the key slot 22, and the push rod 52 is disposed in the through hole 23. The elastic body 60 is disposed between the push portion 51 of the push key 50 and the inner wall surface of the key slot 22 provided with the through hole 23. In the present embodiment, the elastic body 60 has an opening 61 and can be sleeved on the push rod 52 through the opening 61.
[0036] The explosion-proof bolt 70 can be screwed into the threaded through hole 24, wherein the explosion-proof bolt 70 has a rotating shaft 71 and a rotating handle 72, and the rotating shaft 71 is disposed at the center of the rotating handle 72.
[0037] The anti-opening shutter 80 is disposed on one side of the threaded hole 24, and includes a first end portion 81, a second end portion 82, and an engaging recess 83. The first end portion 81 is opposite to the second end portion 82, and the first end portion 81 is pivotally connected to the second combining portion 21 of the second housing 20, so that the anti-opening shutter 80 can rotate relative to the second combining portion 21. In the embodiment, the fastener F2 is inserted through the first end portion 81, so that the first end portion 81 is pivotally connected to the second combining portion 21. The engaging recess 83 is disposed on one side of the second end portion 82 facing the explosion-proof bolt 70, and corresponds to the rotating shaft 71 of the explosion-proof bolt 70.
[0038] The hanging rope 90 has opposite first and second locking ends 91 and 92. The first locking end 91 is pivotally connected to the rotating handle portion 72 of the explosion-proof bolt 70, so that the explosion-proof bolt 70 does not cause the hanging rope 90 to be curled or wound when rotating. The second locking end 92 is fixed to the second combining portion 21 of the second housing 20. In some possible embodiments, the second locking end 92 can be fixed to any position on the first housing 10 or the second housing 20, and is not limited to the embodiment shown in the figure.
[0039] Please refer to FIG. 1A , FIG. 1B , FIG. 2A and FIG. 2B , for the convenience of description, the X axis is defined as the first direction, and the Y axis is defined as the second direction in the figures. The wall portion 111 disposed on the inner wall surface of the first combining portion 11 includes wall portions 111a (as shown in FIG. 2A ) and 111b (as shown in FIG. 2B ), and the wall portions 111a and 111b have first shape surfaces SF11 and SF12, respectively. The block portion 211 disposed on the inner wall surface of the second combining portion 21 has second shape surfaces SF21 (as shown in FIG. 2A ) and SF22 (as shown in FIG. 2B ) corresponding to the first shape surfaces SF11 and SF12.
[0040] When the first combining portion 11 of the first housing 10 and the second combining portion 21 of the second housing 20 are combined with each other, the frame groove 25 of the first housing 10 and the second housing 20 can define and form a containing space CS, and the containing space CS can be used to contain an electronic device (not shown in the figure). Although the embodiment only shows that the first housing 10 has the frame opening 12 and the second housing 20 has the frame groove 25, in actual application, the frame opening can also be disposed on the second housing 20, and the frame groove can also be disposed on the first housing 10, or the opposite frame grooves can be disposed on the first housing 10 and the second housing 20, respectively, to define the containing space CS, and are not limited to the embodiment shown in the figure.
[0041] On the other hand, when the first coupling portion 11 and the second coupling portion 21 are coupled to each other, the wall portions 111a, 111b and the block portion 211 are coupled to each other, and the explosion-proof paths ER1 (as shown in FIG. 2A FIG. 2B Thus, if the electronic device installed in the accommodation space CS generates sparks or explosion due to some unexpected reasons, when the explosion gas or flame flows into the explosion-proof paths ER1, ER2, the bent explosion-proof paths ER1, ER2 can reduce the pressure generated by the explosion gas and block the leakage of the flame, so as to achieve the effect of explosion buffering. In the present embodiment, the cross-sectional dimension H1 of the block portion 211 along the first direction is between 6 mm and 16 mm.
[0042] Please continue to refer to FIG. 2B The through hole 23 penetrates the second coupling portion 21 of the second shell 20, and the through hole 23 has opposite first and second open ends 231, 232, wherein the first open end 231 communicates with the key slot 22, and the second open end 232 is located on the outer wall surface of the second shell 20. In the present embodiment, the linear distance H2 between the first and second open ends 231, 232 along the first direction is also between 6 mm and 16 mm. The push portion 51 of the push key 50 is arranged in the key slot 22 and can slide back and forth in the key slot 22 along the first direction, and the push rod 52 is arranged in the through hole 23, and the end of the push rod 52 away from the push portion 51 is partially exposed to the second open end 232 and can be pressed by the user. Thus, the user can press the push rod 52 exposed to the second open end 232 to drive the push portion 51 to slide along the first direction, so as to press the key arranged on the side of the electronic device.
[0043] Further, the elastic body 60 is arranged between the push portion 51 of the push key 50 and the inner wall surface of the key slot 22 provided with the first open end 231. In the present embodiment, the elastic body 60 is provided with an opening 61 and can be tightly sleeved on the push rod 51 through the opening 61, which can avoid the moisture, water or dust in the external environment from entering the key slot 22 and the accommodation space CS along the through hole 23. On the other hand, the elastic body 60 forms at least one gap G with the inner wall surfaces of the first and second shells 10, 20. In the present embodiment, one side of the elastic body 60 along the second direction forms a gap G with the wall portion 111b of the first shell 10, and the other side of the elastic body 60 along the second direction forms another gap G with the key slot 22 of the second shell 20, and the gaps G between the elastic body 60 and the first and second shells 10, 20 communicate with the explosion-proof path ER2.
[0044] Please continue to refer to FIG. 3 When the elastic body 60 is deformed by being pressed, for example, when the electronic device arranged in the accommodation space CS is caused to spark or explode due to some unexpected reasons, first, the pushing portion 51 is pushed by the pressure of the explosion gas, and the elastic body 60 is pressed in the first direction, causing the elastic body 60 to be deformed and expand in the second direction. In this way, the gap G between the elastic body 60 and the first shell 10 and the second shell 20 can be filled by the deformation of the elastic body 60, so as to quickly block or prevent the explosion gas and flame from leaking from the gap G. Then, if part of the explosion gas or flame still leaks from the gap G, the leaked explosion gas or flame can flow into the explosion-proof path ER2 and the perforation 23, and the bent explosion-proof path ER2 can further reduce the pressure generated by the leaked explosion gas and block the leaked flame, thereby achieving the effect of explosion buffering; on the other hand, since the perforation 23 has a longer straight distance H2 (as shown in FIG. 2B ), it is also helpful to dissipate the explosion gas or flame. In this embodiment, the compressible amount of the elastic body is between 0.2 mm and 0.5 mm.
[0045] Please refer to FIG. 4A and FIG. 4B , in FIG. 4A , the structure and function of each component are the same as FIG. 2A , and will not be described here. However, the difference is that the wall portion 111a of the first combining portion 11 has a first shape surface SF11a which is a double-layered stepped concave shape; and the block portion 211 of the second combining portion 21 has a second shape surface SF21a which is a double-layered stepped convex shape. When the wall portion 111a and the block portion 211 are spliced with each other, a cross-section of the explosion-proof path ER1a formed between the first shape surface SF11a and the second shape surface SF22a is a double-layered stepped shape.
[0046] in FIG. 4B , the structure and function of each component are the same as FIG. 4AThe same, here will not be described, but the difference is that the first combination of 11 wall 111a has a concave sawtooth-shaped first shape surface SF11b; and the second combination of 21 block 211 has a convex sawtooth-shaped second shape surface SF21b. When the wall 111a and the block 211 are spliced, the cross section of the explosion-proof path ER1b is formed between the first shape surface SF11b and the second shape surface SF22b. The above-mentioned embodiment only proposes the implementation of the explosion-proof path ER1a, ER1b with stepped or sawtooth-shaped cross section, but in actual application, the explosion-proof path can also be formed in the cross-sectional direction according to the shape of the first shape surface and the second shape surface, and the explosion-proof path with any shape having multiple bends is not limited to the implementation proposed by the utility model.
[0047] Please refer to FIG. 5A and FIG. 5B , the rotation axis 71 of the explosion-proof bolt 70 includes a first rotation shaft portion 711 and a second rotation shaft portion 712 connected to each other, wherein the first rotation shaft portion 711 has an external thread structure 7111 corresponding to the internal thread structure 241 of the threaded hole 24, so that the explosion-proof bolt 70 can be screwed into the threaded hole 24 through the first rotation shaft portion 711; the second rotation shaft portion 712 is used to connect the rotation holding portion 72 and the first rotation shaft portion 711, and the diameter of the first rotation shaft portion 711 is greater than the diameter of the second rotation shaft portion 712.
[0048] In the embodiment, the rotation holding portion 72 further has three symmetrical radial lever structures 721. Since there is a large recess between any two radial lever structures 721, even if the user wears thick work gloves, he can easily exert force to move the radial lever structure 721, and can rotate the explosion-proof bolt 70 through the radial lever structure 721. Although the embodiment only proposes an implementation in which the rotation holding portion 72 has three symmetrical radial lever structures 721, in actual application, the number of radial lever structures 721 can be two or more, and can be symmetrical or asymmetrical radial lever structures radiating outward from the axis of the rotation holding portion 72, and is not limited to the implementation proposed by the embodiment.
[0049] The clamping recess 83 of the anti-opening gate piece 80 is arranged on the side of the second end portion 82 facing the explosion-proof bolt 70, wherein the clamping recess 73 corresponds to the second rotation shaft portion 712, and the inner diameter of the clamping recess 73 is approximately equal to the outer diameter of the second rotation shaft portion 712, in addition, the interference amount between at least one of the two end points 831, 832 at the opening end of the clamping recess 83 and the second rotation shaft portion is between 0.1mm and 0.5mm, and in a preferred embodiment, the interference amount is approximately equal to 0.2mm.
[0050] Please refer to FIG. 6A and FIG. 6B When the first shaft portion 711 is screwed into the threaded hole 24 to the locking position, for example, when the first shaft portion 711 is screwed into the threaded hole 24 such that the radial cross section of the first shaft portion 711 connected with the second shaft portion 712 is flush with the outer wall surface of the second coupling portion 21 or the first shaft portion 711 is completely immersed in the threaded hole 24, at least one of the two end points 831, 832 of the engagement recess 83 can interfere with the second shaft portion 712 and can be forced into and engaged on the second shaft portion 712.
[0051] Please refer to FIG. 6A (ii), when the anti-opening shutter 80 is engaged with the explosion-proof bolt 70, the user can use the engagement state of the anti-opening shutter 80 and the second shaft portion 712 to visually observe and directly confirm whether the explosion-proof bolt 70 has reached the locking position. In addition, when the anti-opening shutter 80 is engaged with the second shaft portion 712, since the diameter of the first shaft portion 711 is greater than the diameter of the second shaft portion 712, the anti-opening shutter 80 can abut against the first shaft portion 711 along the axial direction of the rotating shaft 71, so that the user cannot unscrew the explosion-proof bolt 70 in the opposite direction, and the loosening and falling off of the explosion-proof bolt 70 can also be prevented. This anti-opening shutter 80 design has the dual protection mechanism of engaging and preventing the explosion-proof bolt 70 from being unscrewed, and the effect of allowing the user to visually identify and confirm the locking state of the explosion-proof bolt 70.
[0052] Please refer to FIG. 7 To improve the explosion-proof effect of the explosion-proof protective shell 1, further, a composite filler CF can be arranged in the accommodation space CS (as shown in FIG. 2A In this embodiment, the composite filler CF is in the shape of a plate and can be placed in the frame groove 25 of the second shell 20 in advance to arrange the composite filler CF between the back of the electronic device D and the inner surface of the second shell 20 of the explosion-proof protective shell 1. When the electronic device D is arranged in the accommodation space CS or placed in the frame groove 25, the composite filler CS will be extruded by the electronic device D and can substantially fill the gap between the electronic device D and the accommodation space CS or the frame groove 25. In this way, since the gap between the electronic device D and the accommodation space CS (or the frame groove 25) has been substantially filled by the composite filler CF, if the electronic device D causes sparks or explosion due to some unexpected reasons, since the internal flammable gas space has been greatly reduced, the explosion energy can be reduced by the composite filler CF, the buffer is performed, and the explosion gas flow in the accommodation space CS is further reduced.
[0053] In some possible embodiments, the composite filler CF can be a solid elastomer or an elastomer with irregularly arranged high-density pores inside, wherein the irregularly arranged high-density pores can not only increase the compressible amount of the composite filler CF, but also block the flow of explosion gas. In the present embodiment, the compressible amount of the composite filler is between 5% and 50%, and in a preferred embodiment, the compressible amount is between 25% and 35%. In addition, although the present embodiment only proposes an embodiment in which the composite filler CF is in the shape of a plate, in actual applications, the composite filler CF can also be an annular elastomer which can be arranged around the side of the electronic device D to cover the side of the electronic device D and can also cover part of the touch panel or the back. Alternatively, the composite filler CF can be a foam filler material which solidifies when in contact with air. The user can use a spray filling method to fill the composite filler CF in the gap between the electronic device D and the accommodation space CS (or the frame recess 25), without being limited to the embodiment proposed in the present embodiment.
[0054] Referring to FIG. 8A to FIG. 8D , the structures and functions of the first housing 10, the key slot 22, the through hole 23, the clamping mechanism 40, the push key 50, and the elastomer 60 are the same as those in FIG. 8A , and thus will not be described again. However, the difference is that the push portion 51 of the push key 50 has a three-dimensional push block 511 (as shown in FIG. 1B ) on the side away from the push rod 52, and the push block 511 abuts against the surface of the key PB (as shown in FIG. 8A ) of the electronic device D. The key PB is a capacitive fingerprint recognition key. FIG. 8B
[0055] Referring to FIG. 8C , the push block 511 of the push key 50 has a normal projection area AE1 along the actuation direction of the push key 50, and the key PB has a normal projection area AE2 along the actuation direction of the push key 50, and the normal projection area AE1 of the push block 511 is smaller than the normal projection area AE2 of the key PB. In this way, when the push key 50 is actuated and presses the key PB through the push block 511, because the normal projection area AE1 of the push block 511 is small, the contact area of the push key 50 (the push portion 51) and the key PB is small, and thus the conduction of static electricity of the push key 50 to the key PB can be reduced, so as to avoid the false actuation of the key PB for fingerprint recognition caused by static electricity interference, and thus the convenience of use and operation of the explosion-proof protective shell 1 is improved.
[0056] In the present embodiment, because the push block 511 is a vertical cuboid structure, the area AE2 of the orthogonal projection of the push block 511 is perpendicular to the long side of the area AE2 of the orthogonal projection of the key PB, and the size of the area AE1 of the orthogonal projection of the push block 511 is between 5% and 30% of the size of the area AE2 of the orthogonal projection of the key PB. In a preferred embodiment, the size of the area AE1 of the orthogonal projection of the push block 511 is 10% of the size of the area AE2 of the orthogonal projection of the key PB.
[0057] Please refer to FIG. 8D , the area AE1 of the orthogonal projection of the push block 511 is also smaller than the area AE2 of the orthogonal projection of the key PB, and FIG. 8D and FIG. 8C The difference lies in that because the push block 511 is a horizontal cuboid structure, the area AE2 of the orthogonal projection of the push block 511 is parallel to the long side of the area AE2 of the orthogonal projection of the key PB. In the above embodiment, although only the embodiment of the push block 511 being a single horizontal or vertical cuboid structure is proposed, in actual application, the push block 511 can be a three-dimensional structure of any shape or composed of multiple dispersed three-dimensional protruding structures, and is not limited to the embodiments proposed by the present application, and regardless of whether the push block has any shape or is composed of multiple dispersed protruding structures, the total size of the orthogonal projection of the push block is also between 5% and 30% of the size of the area AE2 of the orthogonal projection of the key PB.
[0058] Please refer to FIG. 9A to FIG. 9B . In FIG. 9A , the component structures and functions of the first shell 10, the key slot 22, the through hole 23, the clamping mechanism 40, the push key 50, and the elastic body 60 are the same as those in FIG. 8A , and will not be described here. However, the difference lies in that the push key 50 further includes a non-metallic gasket 53. The non-metallic gasket 53 is arranged between the push portion 51 and the key PB, and has a thickness t, wherein the key PB is also a capacitive fingerprint recognition key.
[0059] In FIG. 9B , when the push key 50 is actuated, the push portion 51 can push the key PB through the non-metallic gasket 53. Because the non-metallic gasket 53 has a thickness t, the static electricity of the push key 50 itself can be reduced to conduct to the key PB, thereby avoiding the false actuation of the key PB for fingerprint recognition caused by static electricity interference, and improving the convenience of operation of the explosion-proof protective shell 1.
[0060] In the embodiment, the non-metallic gasket 53 can be made of thermosetting rubber, thermoplastic rubber or rubber sheet, and can cover the key PB completely or partially, and the thickness t is in the range of 0.5mm to 10mm. In a preferred embodiment, the thickness t is 1mm.
[0061] Compared with the prior art, the explosion-proof shell 1 provided by the utility model can effectively reduce or block the explosion gas and flame generated when the electronic device explodes by the design of the special push key 50, the bent explosion-proof path ER1, ER2 and the configuration or filling of the composite filler CF, so as to achieve the effect of explosion buffering.
[0062] On the other hand, in addition to the handle 72 for the user to conveniently rotate, the explosion-proof bolt 70 is also provided with an anti-opening shutter piece 80 on one side of the threaded through hole 24 and corresponding to the explosion-proof bolt 70. The anti-opening shutter piece 80 can prevent the explosion-proof bolt 70 from being opened or loosened and falling off under non-intentional operation, and also allows the user to visually confirm whether the explosion-proof bolt 70 is in the locked state, so as to ensure the safety and stability of the operation of the electronic device arranged in the explosion-proof shell 1. Therefore, the utility model is a creation with great industrial value.
[0063] The utility model can be modified by those skilled in the art, but all modifications are within the scope of the appended claims.
Claims
1. An explosion-proof protective case having a receiving space for receiving an electronic device, the explosion-proof protective case comprising: a first housing having a first coupling portion; a second housing having a second coupling portion for coupling with the first coupling portion, the second coupling portion having at least one through hole with opposite first and second opening ends, the second opening end being located at an outer wall of the second housing, the second housing further comprising: at least one key slot in communication with the first opening end; and a push key having a push portion and a push rod connected to the push portion, the push portion being disposed in the at least one key slot, the push rod being disposed in the through hole, and an end of the push rod away from the push portion being partially exposed at the second opening end; wherein a linear distance between the first and second opening ends in a first direction is equal to a cross-sectional dimension of the second coupling portion in the first direction.
2. The explosion protection enclosure of claim 1, wherein, The linear distance is between 6 mm and 16 mm.
3. The explosion protection enclosure of claim 1, wherein, The push key further comprises at least one elastic body disposed between the push portion and an inner wall of the at least one key slot having the first opening end.
4. The explosion protection enclosure of claim 3, wherein, The at least one elastic body forms at least one gap with inner walls of the first and second housings, and when the at least one elastic body is compressed and deformed, the at least one elastic body fills the at least one gap by deformation, and a compressible amount of the at least one elastic body is between 0.2 mm and 0.5 mm.
5. The explosion protection enclosure of claim 1, wherein, The explosion-proof protective case further comprises a composite filler disposed in the receiving space to fill a gap between the electronic device and the receiving space, and a compressible amount of the composite filler is between 5% and 50%.
6. The explosion protection enclosure of claim 1, wherein, The first or second housing has a transparent plate through which a user can operate the electronic device.
7. An explosion-proof protective case having a receiving space for receiving an electronic device, the explosion-proof protective case comprising: a first housing having a first coupling portion; a second housing having a second coupling portion for coupling with the first coupling portion, the second housing comprising: a threaded through hole passing through the second coupling portion; an explosion-proof bolt having a rotating handle portion and a rotating shaft disposed at a center of the rotating handle portion, the rotating shaft comprising: a first shaft portion screwable into the threaded through hole; and a second shaft portion connecting the rotating handle portion and the first shaft portion; and an anti-opening gate disposed at one side of the threaded through hole, comprising: a first end portion pivotally connected to the second coupling portion so that the anti-opening gate can rotate relative to the second coupling portion; and a second end portion having a clamping recess on a side facing the explosion-proof bolt, the clamping recess corresponding to the second shaft portion; wherein when the first shaft portion is screwed into the threaded through hole to a locking position, the clamping recess interferes with the second shaft portion and can be forced onto and clamped on the second shaft portion.
8. The explosion protection enclosure of claim 7, wherein, The diameter of the first rotating shaft portion is greater than the diameter of the second rotating shaft portion.
9. The explosion protection enclosure of claim 7, wherein, The interference between at least one of the two end points of the opening end of the engaging recess and the second rotating shaft portion is between 0.1 mm and 0.5 mm.
10. The explosion protection enclosure of claim 7, wherein, The rotating handle portion has at least two radial lever structures radially extending from the shaft center.
11. The explosion protection enclosure of claim 7, wherein, The hanging rope has opposite first and second locking ends, the first locking end is pivoted to the rotating handle portion, and the second locking end is fixed to the first or second shell.
12. An explosion-proof protective shell having a receiving space for accommodating an electronic device, the explosion-proof protective shell comprising: a first shell having a first coupling portion with a wall portion arranged on an inner wall surface of the first coupling portion, the wall portion having a first shape surface; and a second shell having a second coupling portion for coupling with the first coupling portion, the second coupling portion having a block portion arranged on an inner wall surface of the second coupling portion, the block portion having a second shape surface corresponding to the first shape surface; wherein, when the first coupling portion and the second coupling portion are coupled with each other, a bending explosion-proof path is formed between the first shape surface and the second shape surface.
13. The explosion protection enclosure of claim 12, wherein, The explosion-proof path can have a shape of a step, a sawtooth, or a wave in a cross-sectional direction.
14. The explosion protection enclosure of claim 12, wherein, The block portion has a cross-sectional dimension in a first direction of 6 mm to 16 mm.
15. An explosion-proof protective shell having a receiving space for accommodating an electronic device, the electronic device having at least one key, the explosion-proof protective shell comprising: a first shell having a first coupling portion; a second shell having a second coupling portion for coupling with the first coupling portion, the second coupling portion having at least one through hole with a first opening end and a second opening end opposite to each other, the second opening end being located on an outer wall surface of the second shell, the second shell further comprising: at least one key slot corresponding to the at least one key, and the first opening end being in communication with the at least one key slot; and a push key having a push portion and a push rod connected to the push portion, the push portion being arranged in the at least one key slot and being used for pushing the at least one key, the push rod being arranged in the through hole, and an end of the push rod away from the push portion being partially exposed at the second opening end; wherein, the push portion has at least one push protrusion abutting against a surface of the at least one key, and a projection area of the at least one push protrusion is less than a projection area of the at least one key.
16. The explosion protection enclosure of claim 15, wherein, The projection area of the at least one push protrusion is between 5% and 30% of the projection area of the at least one key.
17. An explosion-proof protective shell having a receiving space for accommodating an electronic device, the electronic device having at least one key, the explosion-proof protective shell comprising: a first shell having a first coupling portion; A second housing, a second coupling portion is annularly arranged on the second housing, the second coupling portion is used to be coupled with the first coupling portion, the second coupling portion has at least one through hole, the at least one through hole has opposite first and second opening ends, the second opening end is located on the outer wall of the second housing, the second housing further comprises: At least one key slot corresponding to the at least one key, and the first opening end is in communication with the at least one key slot; and A push key, having a pushing portion and a push rod connected with the pushing portion, the pushing portion is arranged in the at least one key slot and used to push the at least one key, the push rod is arranged in the through hole, and an end of the push rod away from the pushing portion is partially exposed at the second opening end; Wherein, the push key comprises a non-metallic gasket, the non-metallic gasket is arranged between the pushing portion and the at least one key, so that the pushing portion can push the at least one key through the non-metallic gasket.
18. The explosion protection enclosure of claim 17, wherein, The non-metallic gasket has a thickness, the thickness is between 0.5mm and 10mm.