Shock-resistant sealed explosion-proof lamp housing and explosion-proof lamp
By setting an annular slot and insertion block between the upper and lower housings of the explosion-proof lamp housing and filling the sealant, the problem of deterioration of sealing properties caused by vibration is solved, and the earthquake-resistant sealing effect is achieved and the safety of the equipment is improved.
Patent Information
- Application Number
- CN202421683475.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-16
- Publication Date
- 2025-04-08
- Estimated Expiration
- 2034-07-16
AI Technical Summary
In a vibrating environment, loose bolts cause poor sealing between the upper case and the lower case, which may introduce water vapor or arc leakage, causing safety hazards.
A shock-resistant and sealed explosion-proof lamp housing is designed. By setting an annular slot and insert block between the upper case and the lower case, and filling it with sealant, forming a transition fit and sealing structure to enhance the connection strength and sealing properties.
It effectively prevents the deterioration of sealing caused by vibration, ensures good sealing between the upper case and the lower case, avoids leakage of water vapor and arcs, and improves the safety of the equipment.
Smart Images
Figure CN222732794U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of explosion-proof lamp sealing, in particular to a shock-resistant sealed explosion-proof lamp housing and an explosion-proof lamp. Background Art
[0002] Explosion-proof lamps are commonly used lamps in industry. Explosion-proof lamps usually include an upper shell and a lower shell, and the upper shell and the lower shell are fixedly connected by multiple bolts.
[0003] However, explosion-proof lamps are often used in vibration environments, such as mines or production workshops. The vibration in the external environment will be transmitted to the explosion-proof lamp, causing the bolts to loosen, which in turn leads to poor sealing between the upper shell and the lower shell. Once the sealing between the upper shell and the lower shell deteriorates, water vapor may enter the electrical components between the two or cause sparks and arcs in the explosion-proof lamp to leak out, thus causing safety hazards. Utility Model Content
[0004] The utility model aims to solve the problem that vibration may cause the sealing performance between the upper shell and the lower shell of the explosion-proof lamp to deteriorate.
[0005] In order to solve the above technical problems, the utility model provides an explosion-proof lamp housing, which includes an upper shell and a lower shell. The upper shell is fixedly connected to the top surface of the lower shell by a plurality of fasteners to close the cavity. A cavity for accommodating electrical components is provided inside the upper shell, and the upper shell has an upper shell peripheral wall surrounding the cavity in a circumferential direction. The bottom of the upper shell peripheral wall is provided with an annular slot distributed around the cavity, and the annular slot is recessed from the bottom surface of the upper shell peripheral wall to the top surface of the upper shell peripheral wall. The top surface of the lower shell is provided with an annular plug, which is inserted into the annular slot and a transition fit is formed between the two, and the annular slot is completely sealed and filled with sealant. The top surface of the annular plug is provided with annular protrusions distributed along its circumferential extension direction, the width of the annular protrusion is smaller than the width of the annular plug, and there is a gap between the top surface of the annular protrusion and the top surface of the groove of the annular slot. The side of the annular plug is provided with an annular stopper, and the bottom surface of the upper shell peripheral wall is pressed against the top surface of the annular stopper.
[0006] In some embodiments, the annular limit block ring is arranged on the outer side of the annular insert block.
[0007] In some embodiments, the annular protrusion is disposed at the middle position of the top surface of the annular insert block. The inner side surfaces of the annular insert block and the annular protrusion are all set as frosted surfaces.
[0008] In some embodiments, the annular protrusion and the annular plug are provided with an annular groove, which extends along the circumferential extension direction of the annular protrusion and is recessed from the top surface of the annular protrusion toward the bottom surface of the annular plug, and is partially filled with sealant.
[0009] In some embodiments, the side wall and the bottom wall of the annular groove are configured as frosted surfaces.
[0010] In some embodiments, the width of the annular groove gradually decreases from bottom to top.
[0011] In some embodiments, the annular slot includes a tapered area whose width gradually decreases from bottom to top and a gradually expanding area whose width gradually increases from bottom to top. The tapered area is transitionally matched with the annular plug block, the top surface of the annular protrusion is lower than the entrance of the gradually expanding area, the gradually expanding area is located above the tapered area and the two are connected, and the sealant is filled in the gradually expanding area and the tapered area. The groove wall of the annular slot facing the inner side of the annular plug block is all set to a frosted surface.
[0012] In some embodiments, a plurality of heat dissipation ribs are disposed on the outer side surface of the peripheral wall of the upper shell, and all the heat dissipation ribs are distributed around the cavity.
[0013] In some embodiments, the sealant has a sealing portion and an overflow portion, the sealing portion is sealed and filled in the annular slot, and the overflow portion is distributed around the cavity and sealed between the bottom surface of the upper shell peripheral wall and the inner side surface of the annular plug.
[0014] Another aspect of the utility model provides an explosion-proof lamp, which comprises a light-emitting component, an electrical component and the explosion-proof lamp housing in the above embodiment.
[0015] The above technical solution of the utility model has the following beneficial effects:
[0016] The sealant filled in the annular slot can maintain good sealing between the annular plug and the annular slot, and further maintain good sealing between the upper shell and the lower shell. The annular plug is inserted into the annular slot and a transition fit is formed between the two, and the annular plug and the annular protrusion are respectively bonded to the annular slot by sealant, so that the upper shell and the lower shell are firmly connected. Even if the upper shell and the lower shell are vibrated, the two can still be firmly connected, so the sealing between the two will not be destroyed by the vibration. Therefore, the explosion-proof lamp housing of the utility model can prevent the sealing between the upper shell and the lower shell from being deteriorated due to vibration, and prevent safety hazards. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 It is a three-dimensional diagram of an explosion-proof lamp housing according to an embodiment of the utility model;
[0018] Figure 2 It is a cross-sectional view of an explosion-proof lamp housing according to an embodiment of the utility model;
[0019] Figure 3 It is a three-dimensional schematic diagram of an annular slot in one embodiment of the utility model;
[0020] Figure 4It is a three-dimensional schematic diagram of an annular plug block according to an embodiment of the utility model;
[0021] Figure 5 yes Figure 2 A partial enlarged view of middle A;
[0022] Figure 6 It is a schematic diagram of the cooperation between the annular slot and the annular insert block in one embodiment of the utility model;
[0023] Figure 7 It is a schematic diagram of an annular groove in one embodiment of the utility model;
[0024] Figure 8 It is a schematic diagram of a gradually expanding area and a gradually contracting area of an embodiment of the utility model;
[0025] Fig. 9 It is a schematic diagram of sealant filling according to an embodiment of the utility model.
[0026] Description of Reference Numerals
[0027] 1. Upper shell; 2. Lower shell; 3. Annular slot; 31. Gradual expansion area; 32. Gradual contraction area; 4. Annular plug; 5. Annular protrusion; 6. Annular groove; 7. Annular limit block; 8. Cavity; 9. Upper shell peripheral wall; 10. Sealant; 101. Sealing part; 102. Overflow part; 11. Heat dissipation ribs. DETAILED DESCRIPTION
[0028] The specific implementation of the present invention is described in detail below. It should be understood that the specific implementation described here is only used to illustrate and explain the present invention, and is not used to limit the present invention.
[0029] In the present invention, unless otherwise stated, the directional words such as "upper" and "lower" usually refer to the orientation in the assembled state. "Inside" and "outside" refer to the inside and outside relative to the outline of each component itself.
[0030] It should be noted that the terms "first", "second", etc. in the specification and claims of the utility model and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so as to describe the embodiments of the utility model described here. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.
[0031] like Figures 1 to 5As shown, the utility model provides an explosion-proof lamp housing, which includes an upper shell 1 and a lower shell 2. A cavity 8 for accommodating electrical components is provided inside the upper shell 1, and the upper shell 1 has an upper shell peripheral wall 9 circumferentially surrounding the cavity 8. An annular slot 3 distributed around the cavity 8 is provided at the bottom of the upper shell peripheral wall 9, and the annular slot 3 is recessed from the bottom surface of the upper shell peripheral wall 9 to the top surface of the upper shell peripheral wall 9. The upper shell 1 is fixedly connected to the top surface of the lower shell 2 by a plurality of fasteners to close the cavity 8. An annular plug 4 is provided on the top surface of the lower shell 2, and the annular plug 4 is inserted into the annular slot 3 and a transition fit is formed between the two, and the annular slot 3 is completely sealed and filled with sealant 10. The top surface of the annular plug 4 is provided with annular protrusions 5 distributed along its circumferential extension direction, and the width of the annular protrusion 5 is smaller than the width of the annular plug 4, and there is a gap between the top surface of the annular protrusion 5 and the groove top surface of the annular slot 3. An annular limiting block 7 is provided on the side of the annular insert block 4 , and the bottom surface of the upper shell peripheral wall 9 is pressed against the top surface of the annular limiting block 7 .
[0032] Specifically, when assembling the explosion-proof lamp, it is necessary to pre-connect the upper shell 1 with the lower shell 2, align the annular plug 4 with the annular slot 3 that matches its shape, and insert the annular plug 4 into the annular slot 3 pre-filled with liquid sealant 10. At the same time, the annular limit block 7 will abut against the bottom surface of the upper shell peripheral wall 9 to control the depth of the annular plug 4 inserted into the annular slot 3, so that there is enough space above the annular slot 3 and the annular protrusion 5 to accommodate the sealant 10. The annular protrusion 5 is arranged on the top surface of the annular plug 4, which can increase the bonding surface with the sealant 10, and help to improve the strength of the connection between the upper shell 1 and the lower shell 2.
[0033] In addition, after the annular slot 3 and the annular plug 4 are connected in a transition fit manner, the liquid sealant 10 will be squeezed by the annular protrusion 5 and the annular slot 3 The gap between the top surface of the annular protrusion 5 and the top surface of the groove of the annular slot 3, the gap between the side of the annular plug 4 facing the cavity 8 and the annular slot 3, and the gap between the side of the annular plug 4 facing away from the cavity 8 and the annular slot 3, and overflow with glue beads between the side of the annular plug 4 facing the cavity 8 and the bottom surface of the upper shell peripheral wall 9. The solidified glue beads and the sealant 10 uniformly filled in the gaps at various locations together play a role in connection, fixing and sealing.
[0034] In this embodiment, the sealant 10 filled in the annular slot 3 can maintain good sealing between the annular plug 4 and the annular slot 3, and further maintain good sealing between the upper shell 1 and the lower shell 2. The annular plug 4 is inserted into the annular slot 3 and a transition fit is formed between the two, and the annular plug 4 and the annular protrusion 5 are respectively bonded to the annular slot 3 by the sealant 10, so that the upper shell 1 and the lower shell 2 are firmly connected. Even if the upper shell 1 and the lower shell 2 are vibrated, the two can still be firmly connected, so the sealing between the two will not be destroyed by the vibration. Therefore, the explosion-proof lamp housing of the utility model can prevent the deterioration of the sealing between the upper shell 1 and the lower shell 2 due to vibration, and prevent safety hazards.
[0035] It should be noted that the annular insert block 4 is also distributed around the cavity 8 . Furthermore, when the annular protrusion 5 and the annular insert block 4 are cross-sectioned in a direction perpendicular to the top surface of the upper housing 1 , the width of the annular protrusion 5 is smaller than that of the annular insert block 4 .
[0036] In some embodiments, the fasteners may be bolts or rivets, etc., which are not limited in the present invention.
[0037] like Figure 5 As shown, in some embodiments of the present invention, the annular limiting block 7 is arranged on the outer side of the annular insert block 4.
[0038] Specifically, the annular stopper 7 is arranged around the outer circumference of the annular insert 4, and the annular stopper 7 is arranged on the outer side of the cavity 8 of the annular insert 4 away from the upper shell 1. The distance from the top surface of the annular stopper 7 to the top surface of the annular protrusion 5 should be less than the vertical depth of the annular slot 3. This arrangement allows sufficient space between the top surface of the annular protrusion 5 and the groove top surface of the annular slot 3 to accommodate the sealant 10, and thus the sealant 10 filled between the top surface of the annular protrusion 5 and the groove top surface of the annular slot 3 has a certain thickness, which on the one hand improves the strength of the connection between the upper shell 1 and the lower shell 2, and on the other hand, completely fills and seals the gap between the top surface of the annular protrusion 5 and the groove top surface of the annular slot 3.
[0039] like Figure 6 As shown, in some embodiments of the present invention, the annular protrusion 5 is arranged at the middle position of the top surface of the annular insert block 4. The inner side surfaces of the annular insert block 4 and the annular protrusion 5 are all set as frosted surfaces.
[0040] Specifically, the annular protrusion 5 and the annular plug 4 are cross-sectioned in a direction perpendicular to the top surface of the upper shell 1, and the annular protrusion 5 is arranged at the middle position of the top surface of the annular plug 4, so that the top surface of the annular plug 4 forms two adhesive surfaces located on the inner and outer sides of the annular protrusion 5, respectively, and these two adhesive surfaces can be bonded with the sealant 10; moreover, the inner side surface, top surface and outer side surface of the annular protrusion 5 can also be bonded with the sealant 10, so the above-mentioned setting method helps to increase the area connected with the sealant 10 and enhance the bonding effect. In addition, since the frosted surface is relatively rough, setting the inner side surfaces of the annular plug 4 and the annular protrusion 5 as frosted surfaces can enhance the bonding effect.
[0041] like Figure 7 As shown, in some embodiments of the utility model, the annular protrusion 5 and the annular plug-in block 4 are provided with an annular groove 6, the annular groove 6 extends along the circumferential extension direction of the annular protrusion 5, and the annular groove 6 is recessed from the top surface of the annular protrusion 5 toward the bottom surface of the annular plug-in block 4, and the groove is partially filled with sealant 10.
[0042] Specifically, before the upper shell 1 and the lower shell 2 are assembled, the annular slot 3 is first filled with liquid sealant 10, and then the annular insert 4 is inserted into the annular slot 3. The sealant 10 pre-filled in the annular slot 3 will enter the annular groove 6 as the annular slot 3 and the annular insert 4 are squeezed in opposite directions. After the liquid sealant 10 is cured, part of the sealant 10 is cured in the annular groove 6, so that the annular protrusion 5 is firmly connected to the sealant 10. The provision of the annular groove 6 increases the connection area between the sealant 10 and the annular insert 4, and improves the connection strength.
[0043] In some embodiments of the present invention, in order to make the connection between the sealant 10 and the annular groove 6 more firmly, the side wall and the bottom wall of the annular groove 6 are set to be frosted surfaces.
[0044] like Figure 7 As shown, in some embodiments of the present invention, the annular protrusion 5 and the annular insert block 4 are cross-sectioned in a direction perpendicular to the top surface of the upper shell 1, and the width of the annular groove 6 gradually decreases from bottom to top in the cross section.
[0045] Specifically, after the sealant 10 in the annular groove 6 is cured, the cured sealant 10 is snap-fitted with the annular groove 6 , thereby strengthening the connection between the annular plug 4 and the upper shell peripheral wall 9 , and preventing the annular plug 4 from being separated from the sealant 10 .
[0046] like Figure 8As shown, in some embodiments of the present invention, the annular slot 3 includes a tapered zone 32 whose width gradually decreases from bottom to top and a gradually expanding zone 31 whose width gradually increases from bottom to top. Specifically, the annular protrusion 5 and the annular insert block 4 are cross-sectioned in a direction perpendicular to the top surface of the upper shell 1, and the width of the tapered zone 32 in the cross section gradually decreases from the bottom to the top of the tapered zone 32, and the width of the gradually expanding zone 31 in the cross section gradually increases from the bottom to the top of the gradually expanding zone 31. The gradually expanding zone 31 is located above the tapered zone 32 and the two are connected, and the widths of the gradually expanding zone 31 and the tapered zone 32 in the cross section are equal at the position where the two are connected.
[0047] The tapered area 32 is transitionally matched with the annular insert 4, and the space of the gradually expanding area 31 is completely filled with the sealant 10. The top surface of the annular protrusion 5 is lower than the entrance of the gradually expanding area 31, that is, the distance between the top surface of the annular limit block 7 and the top surface of the annular protrusion 5 is less than the height of the tapered area 32 on the cross section.
[0048] After the annular insert 4 is inserted into the tapered area 32 in the annular slot 3, a gap not occupied by the annular insert 4 will remain inside the tapered area 32, and the sealant 10 is filled in the gap between the gradually expanding area 31 and the tapered area 32. In addition, the groove wall of the annular slot 3 facing the inner side of the annular insert 4 is all set to a frosted surface, which helps to improve the connection strength between the sealant 10 and the annular slot 3 and prevent the groove wall of the annular slot 3 facing the inner side of the annular insert 4 from being separated from the sealant 10.
[0049] like Figure 1 As shown, in some embodiments of the present invention, a plurality of heat dissipation ribs 11 are provided on the outer side of the upper shell peripheral wall 9, and all the heat dissipation ribs 11 are distributed around the cavity 8. The light-emitting components inside the explosion-proof lamp housing generate a lot of heat while emitting light, and the heat dissipation ribs 11 can assist the upper shell 1 to accelerate heat dissipation.
[0050] like Fig. 9As shown, in some embodiments of the present invention, the sealant 10 has a sealing portion 101 and an overflow portion 102, the sealing portion 101 is sealed and filled in the annular slot 3, and the overflow portion 102 is distributed around the cavity 8 and is sealed between the bottom surface of the upper shell peripheral wall 9 and the inner side surface of the annular plug 4. A portion of the sealing portion 101 is connected to the annular slot 3, and the other portion is connected to the annular plug 4, so that the upper shell 1 is fixedly connected to the lower shell 2. The sealant 10 in a liquid state flows due to the opposite extrusion between the annular slot 3 and the annular plug 4, so that the sealant 10 overflows between the side of the annular plug 4 facing the cavity 8 and the bottom surface of the upper shell peripheral wall 9, and the overflowing glue beads constitute the overflow portion 102. The overflow portion 102 is located between the bottom surface of the upper shell peripheral wall 9 and the side surface of the annular plug 4 facing the cavity 8. The overflow portion 102 is distributed around the cavity 8, and the overflow portion 102 seals the angle between the bottom surface of the upper shell peripheral wall 9 of the cavity 8 and the inner side surface of the annular plug 4, thereby further sealing the cavity 8, isolating the cavity 8 from the external environment, preventing water vapor from entering the cavity 8, and also preventing arcs and sparks generated by electrical components in the cavity 8 from entering the external environment and causing danger.
[0051] Another aspect of the present invention provides an explosion-proof lamp, which includes a light-emitting component, an electrical component and the explosion-proof lamp housing of the above embodiment. The electrical component is sealed in a cavity 8 of the explosion-proof lamp housing and can provide power for the light-emitting component installed in the lower housing 2.
[0052] The explosion-proof lamp adopts the explosion-proof lamp housing of the above embodiment, so the above technical effects can also be achieved.
[0053] The preferred embodiments of the present invention are described in detail above. However, the present invention is not limited to the specific details in the above embodiments. Within the technical concept of the present invention, the technical solution of the present invention can be subjected to a variety of simple modifications, and these simple modifications all belong to the protection scope of the present invention.
[0054] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present invention will not further describe various possible combinations.
[0055] In addition, various embodiments of the present invention may be arbitrarily combined, and as long as they do not violate the concept of the present invention, they should also be regarded as the contents disclosed by the present invention.
Claims
1. An explosion-proof lamp housing, characterized in that: include: An upper shell (1), wherein a cavity (8) for accommodating an electrical component is provided inside the upper shell (1), and the upper shell (1) has an upper shell peripheral wall (9) circumferentially surrounding the cavity (8); an annular slot (3) distributed around the cavity (8) is provided at the bottom of the upper shell peripheral wall (9), and the annular slot (3) is recessed from the bottom surface of the upper shell peripheral wall (9) to the top surface of the upper shell peripheral wall (9); The lower shell (2) is provided with an upper shell (1) fixedly connected to the top surface of the lower shell (2) by a plurality of fasteners to close the cavity (8); the top surface of the lower shell (2) is provided with an annular plug (4), the annular plug (4) is inserted into the annular slot (3) and a transition fit is formed between the two, and the annular slot (3) is completely sealed and filled with a sealant (10); the top surface of the annular plug (4) is provided with annular protrusions (5) distributed along its circumferential extension direction, the width of the annular protrusions (5) is smaller than the width of the annular plug (4), and there is a gap between the top surface of the annular protrusions (5) and the top surface of the groove of the annular slot (3); the side of the annular plug (4) is provided with an annular limit block (7), and the bottom surface of the upper shell peripheral wall (9) is pressed against the top surface of the annular limit block (7).
2. The explosion-proof lamp housing according to claim 1, characterized in that: The annular limiting block (7) is arranged on the outer side of the annular insert block (4).
3. The explosion-proof lamp housing according to claim 1, characterized in that: The annular protrusion (5) is arranged at the middle position of the top surface of the annular insert block (4); the inner side surfaces of the annular insert block (4) and the annular protrusion (5) are all configured as frosted surfaces.
4. The explosion-proof lamp housing according to claim 3, characterized in that: The annular protrusion (5) and the annular insert (4) are provided with an annular groove (6), the annular groove (6) extending along the circumferential extension direction of the annular protrusion (5), and the annular groove (6) is recessed from the top surface of the annular protrusion (5) toward the bottom surface of the annular insert (4), and the annular groove (6) is filled with a portion of the sealant (10).
5. The explosion-proof lamp housing according to claim 4, characterized in that: The side wall and the bottom wall of the annular groove (6) are arranged to be frosted surfaces.
6. The explosion-proof lamp housing according to claim 4, characterized in that: The width of the annular groove (6) gradually decreases from bottom to top.
7. The explosion-proof lamp housing according to claim 3, characterized in that: The annular slot (3) comprises a tapered area (32) whose width gradually decreases from bottom to top and a gradually expanding area (31) whose width gradually increases from bottom to top; the tapered area (32) is transitionally matched with the annular plug block (4); the top surface of the annular protrusion (5) is lower than the entrance of the gradually expanding area (31); the gradually expanding area (31) is located above the tapered area (32) and the two are connected; the sealant (10) is filled in the gradually expanding area (31) and the tapered area (32); the groove wall of the annular slot (3) facing the inner side surface of the annular plug block (4) is all set to be a frosted surface.
8. The explosion-proof lamp housing according to claim 1, characterized in that: The outer side surface of the upper shell peripheral wall (9) is provided with a plurality of heat dissipation ribs (11), and all the heat dissipation ribs (11) are distributed around the cavity (8).
9. The explosion-proof lamp housing according to claim 1, characterized in that: The sealant (10) comprises a sealing portion (101) and an overflow portion (102), wherein the sealing portion (101) is sealed and filled in the annular slot (3), and the overflow portion (102) is distributed around the cavity (8) and is sealed between the bottom surface of the upper shell peripheral wall (9) and the inner side surface of the annular plug block (4).
10. An explosion-proof lamp, characterized in that: The invention comprises a light-emitting component, an electrical component and an explosion-proof lamp housing as claimed in any one of claims 1 to 9.