Explosion-proof distribution box

Abstract

An explosion-proof distribution box disclosed by the present invention comprises a box body and a box cover installed on the box body, a control device is fixedly arranged in the box body, the control device is provided with a plurality of keys, the box cover is also provided with a plurality of adjusting holes, the adjusting holes are internally in threaded connection with adjusting sleeves, the adjusting sleeves are provided with movable holes penetrating through the box cover, and the movable holes penetrate through the box cover. A push rod is movably connected in the movable hole, one end of the push rod is provided with a rod head located on the inner side of the box cover, the rod head right faces the key and is separated from the key, the other end of the push rod is provided with a pressing head located on the outer side of the box cover, and a spring connected with the pressing head and the adjusting sleeve is arranged between the pressing head and the adjusting sleeve. And the rod head is pushed to move towards the key and finally the key is pressed down. The key press has the beneficial effects that the push rod can be driven to move by rotating the adjusting sleeve, and the distance between the rod head and the key can be changed by the push rod after moving, so that the pressing force required by the pressing head when the key is pressed is changed, and the key press can adapt to different use scenes.

Description

Technical Field

[0001] The invention belongs to the technical field of distribution boxes, and in particular relates to an explosion-proof distribution box. Background Art

[0002] Explosion-proof distribution box is a kind of distribution equipment specially designed for use in environments where explosive gas or dust may exist. The body of the explosion-proof distribution box can prevent external flammable gas or dust from entering the box, and at the same time ensure that the sparks or high temperatures generated inside the distribution box will not ignite external flammable and explosive substances. At present, explosion-proof distribution boxes are mainly used in industries such as petroleum, chemical, natural gas, pharmaceutical, and mining.

[0003] In order to control the internal environment of the explosion-proof distribution box, specific control devices are often installed inside the explosion-proof distribution box. For example, in order to keep the internal temperature of the explosion-proof distribution box stable, a temperature control device needs to be installed. Such control devices will also be provided with multiple buttons. In traditional explosion-proof distribution boxes, in order to ensure safety, the buttons on the control device cannot be directly in contact with the outside world. Every time an operation button is pressed, the box body needs to be disassembled first, which is inconvenient. To solve this problem, multiple push rods are usually installed on the box body that are opposite to the buttons. After the push rod is pressed, the push rod will move forward and press the button of the control device, thereby realizing the pressing operation of the button of the control device without removing the shell.

[0004] The push rod of the existing explosion-proof distribution box is connected to the box body only by a spring, and the force required for the push rod to press the button is fixed. In actual use, this will lead to the following problems. For different usage scenarios, the optimal pressing force of the push rod will change. For example, a smaller pressing force is suitable for situations where the button needs to be pressed quickly, while a larger pressing force can reduce the possibility of pressing the button due to accidental touching of the push rod, which is more inconvenient. Summary of the invention

[0005] The existing explosion-proof distribution box is provided with a push rod for pressing the buttons of the control device. The pressing force of the push rod cannot be adjusted, which is not convenient for adapting to different usage scenarios. To solve this problem, the following invention is proposed: A kind of explosion-proof distribution box comprises a box body and a box cover installed on the box body, wherein a control device is fixedly arranged in the box body, the control device is provided with a plurality of buttons, the box cover is also provided with a plurality of adjustment holes, the adjustment holes are threadedly connected with adjustment sleeves, the adjustment sleeve is provided with a movable hole penetrating the box cover, a push rod is movably connected in the movable hole, one end of the push rod is provided with a rod head located on the inner side of the box cover, the rod head is directly opposite to the button and is spaced therefrom, and the other end is provided with a pressure head located on the outer side of the box cover, a spring connected to the pressure head and the adjustment sleeve is provided between the two, after the pressure head is pressed, the rod head is pushed to move toward the button, after the adjustment sleeve is rotated in the adjustment hole, the push rod is pushed to move by the spring, and after the push rod moves, the distance between the rod head and the button is changed.

[0006] Furthermore, a horizontally extending guide groove is provided on the push rod, and a guide block is provided in the movable hole and is inserted into the guide groove. After the pressure head is pressed, the guide block moves horizontally along the guide groove, while ensuring that the push rod will not rotate relative to the adjustment sleeve during the movement.

[0007] Furthermore, the pressure head is also provided with a limit groove extending into the push rod, the guide groove is connected with the limit groove, the guide block passes through the guide groove and is inserted into the limit groove, the limit block is threadedly connected in the limit groove, the limit block is spaced apart from the guide block, after the pressure head is pressed, the limit block moves toward the guide block until the two are in contact, and then the rod head is prevented from continuing to move toward the key, so as to avoid excessive movement of the push rod and damage to the key after the pressure head is pressed. In addition, the limit block can also be screwed into the limit groove in advance until it is in contact with the guide block, and then the pressure head cannot be pressed, so as to avoid the operator accidentally touching the moving push rod and incorrectly adjusting the control device.

[0008] Furthermore, the adjusting sleeve is provided with an adjusting head, the outer side of the adjusting head is prismatic, one end of the spring is elastically connected to the adjusting head, and the adjusting sleeve can be screwed in and out using a tool matching the outer side of the adjusting head.

[0009] Furthermore, the limit block is provided with a prismatic adjustment groove, the opening of which faces the outside of the pressure head. A tool matching the adjustment groove is inserted into the adjustment groove, and the limit block can be screwed in and out directly from the outside.

[0010] Furthermore, the rod head is provided with a fixing piece, and the push rod is provided with a fixing hole, and the fixing piece is threadedly connected in the fixing hole so that the rod head can be detachably fixed on the push rod.

[0011] Furthermore, at least one metal plate is provided between the box body and the box cover, and the box body, the metal plate and the box cover are fitted and fixedly connected by fasteners, and multiple metal plates can increase the space size between the box body and the box cover.

[0012] The present invention proposes an explosion-proof distribution box, which has the beneficial effect that a control device is provided in the box body, and a plurality of push rods are provided on the box cover. After pressing the pressure head of the push rod, the push rod can be moved and a button on the control device can be pressed through the rod head to adjust the control device. The operator can rotate the adjustment sleeve inward or outward according to the usage scenario, and change the distance between the push rod head and the button in advance, so that the pressing force required when pressing the pressure head also changes accordingly. In addition, the movement distance of the push rod when pressing can be limited by screwing in a limit block. According to the screwing in distance of the limit block, it is possible to prevent the push rod from moving excessively after being pressed or directly prevent the push rod from moving due to accidental touch. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the three-dimensional structure of the explosion-proof distribution box in the present invention; Figure 2 The partial structure diagram of the explosion-proof distribution box in the present invention is shown in FIG. Figure 1 ; Figure 3 The three-dimensional structure of the push rod and related components in the present invention is shown in FIG. Figure 1 ; Figure 4 The three-dimensional structure of the push rod and related components in the present invention is shown in FIG. Figure 2 ; Figure 5 It is a schematic diagram of the disassembled structure of the push rod and related components in the present invention; Figure 6 It is a schematic diagram of the combined structure of the push rod and the adjustment sleeve in the present invention; Figure 7 The partial structure diagram of the explosion-proof distribution box in the present invention is shown in FIG. Figure 2 .

[0014] The corresponding relationship between the various figure labels and component names in the figure is as follows: 1. Box body; 2. Control device; 3. Push rod; 4. Rod head; 5. Adjustment sleeve; 6. Limit block; 11. Box cover; 12. Mounting slot; 13. Adjustment hole; 14. Fastener; 15. Metal plate; 21. Button; 31. Spring; 32. Press head; 33. Limit slot; 34. Guide slot; 41. Fixing hole; 42. Fixing piece; 51. Adjustment head; 52. Movable hole; 53. Guide block; 61. Adjustment slot. DETAILED DESCRIPTION

[0015] The technical solution of the present invention will be clearly and completely described below in conjunction with embodiments.

[0016] Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making any creative work should fall within the scope of protection of this application.

[0017] In the present application, the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings. These terms are mainly used to better describe the present invention and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation.

[0018] In addition to being used to indicate a position or location relationship, some of the above terms may also be used to indicate other meanings. For example, the term "on" may also be used to indicate a certain dependency or connection relationship in some cases. For those skilled in the art, the specific meanings of these terms in the present invention can be understood according to specific circumstances.

[0019] like Figure 1-Figure 5 As shown, it is a preferred embodiment of the present invention, an explosion-proof distribution box, including a box body 1 and a box cover 11, the box body 1 is provided with a mounting groove 12, a control device 2 is fixedly installed in the mounting groove 12, the box cover 11 is fixedly installed on the box body 1 by a fastener 14, and covers the outside of the opening of the mounting groove 12 to separate the control device 2 from the outside, a plurality of buttons 21 are also provided on the control device 2, a plurality of horizontally penetrating adjustment holes 13 are provided on the box cover 11, an adjustment sleeve 5 is threadedly connected to the inner thread of the adjustment hole 13, and the adjustment sleeve 5 is provided An active hole 52 also horizontally penetrates the box cover 11 and is opposite to the button 21 of the control device 2. A push rod 3 is movably connected in the active hole 52. A rod head 4 located on the inner side of the box cover 11 is provided at the end of one end of the push rod 3. One side of the rod head 4 is in contact with the adjustment sleeve 5, and the other side is opposite to the button 21 and is spaced apart from it. A pressure head 32 located on the outer side of the box cover 11 is provided at the end of the other end. A spring 31 is also sleeved on the outer side of the push rod 3. The two ends of the spring 31 are elastically connected or elastically abutted with the pressure head 32 and the adjustment sleeve 5 respectively.

[0020] After the box body 1, the control device 2 and the box cover 11 of the explosion-proof distribution box are installed, each button 21 of the control device 2 is directly opposite to the rod head 4 of a push rod 3. After the operator presses the pressure head 32 of the push rod 3, the pressure head 32 will drive the push rod 3 as a whole to move along the movable hole 52 toward the installation groove 12 until the rod head 4 of the push rod 3 contacts the button 21, and the button 21 is pressed to complete the regulation of the control device 2. After releasing the pressure head 32, the push rod 3 is driven by the spring 31 to return to the initial position.

[0021] The adjusting sleeve 5 is preferably pressed against the pressing head 32 by the spring 31, so that the adjusting sleeve 5 can be pressed against the pressing head 32 by the spring 31, and the pressing head 32 can be pressed against the pressing head 32 by the spring 31, so that the adjusting sleeve 5 can be pressed against the pressing head 32 by the spring 31, so that the adjusting sleeve 5 can be pressed against the pressing head 32 by the spring 31, and the pressing head 32 can be pressed against the pressing head 32 by the spring 31, so that the adjusting sleeve 5 can be pressed against the pressing head 32 by the spring 31, and the pressing head 32 can be pressed against the pressing head 32 by the spring 31, so that the pressing force required when the pushing rod 3 is pressed is changed.

[0022] like Figure 5 and Figure 6 As shown, in the present embodiment, a horizontally extending guide groove 34 is further provided on the push rod 3, and a horizontally extending guide block 53 is provided in the movable hole 52. The guide block 53 is inserted into the guide groove 34. On the one hand, after the pressure head 32 is pressed, the guide block 53 will move horizontally along the guide groove 34 to avoid the push rod 3 from rotating relative to the adjustment sleeve 5 during the pressing process. The spring 31 will only shrink and deform in the horizontal direction, which is more stable. On the other hand, when the adjustment sleeve 5 rotates, the guide block 53 will directly drive the push rod 3 to rotate together, and the spring 31 drives the push rod 3 to move through the elastic force.

[0023] Furthermore, the pressure head 32 is provided with a limit groove 33 extending into the push rod 3, the guide groove 34 is connected with the limit groove 33, the guide block 53 passes through the guide groove 34 and is inserted into the limit groove 33, and the limit block 6 is threadedly connected in the limit groove 33, and the limit block 6 is spaced apart from the guide block 53. After the pressure head 32 is pressed, the limit block 6 moves with the push rod 3 and approaches the guide block 53. When the limit block 6 contacts the guide block 53, the push rod 3 is prevented from moving further. The guide block 53 limits the maximum distance that the push rod 3 moves into the installation groove 12. After the rod head 4 has pressed the button 21, the operator cannot continue to press the push rod 3 to avoid damage to the button 21. After the adjustment sleeve 5 is screwed in or out, it is only necessary to fix the adjustment sleeve 5 first, and then screw the limit block 6 in or out of the limit groove 33 by the same distance. In addition, the operator can also screw the limit block 6 in advance until it contacts the guide block 53. At this time, pressing the pressure head 32 cannot move the push rod 3, avoiding pressing the button 21 due to accidentally touching the push rod 3, and preventing the control device 2 from being incorrectly adjusted.

[0024] Furthermore, if Figure 4 and Figure 5 As shown, the rod head 4 and the push rod 3 are detachably fixedly connected. Specifically, a fixing piece 42 is provided on the rod head 4, and a fixing hole 41 is provided on the push rod 3. The guide block 53 is first inserted into the guide groove 34, and then the fixing piece 42 is threadedly connected to the fixing hole 41 to complete the fixation of the rod head 4 and the push rod 3.

[0025] Furthermore, the adjusting sleeve 5 is provided with an adjusting head 51, the outer side of the adjusting head 51 is prism-shaped, and one end of the spring 31 is elastically connected to or elastically abuts against the adjusting head 51; the limiting block 6 is provided with a prism-shaped adjusting groove 61, the opening of the adjusting groove 61 faces the outer side of the pressure head 32. With the aid of a tool matching the adjusting head 51 or the adjusting groove 61, the adjusting sleeve 5 and the limiting block 6 can be quickly rotated from the outer side of the box cover 11.

[0026] In this embodiment, if Figure 7 As shown, at least one metal plate 15 is provided between the box body 1 and the box cover 11. The box body 1, the metal plate 15 and the box cover 11 are fixedly connected by fasteners 14. Multiple metal plates 15 can increase the depth of the installation groove 12 to facilitate the installation of more electrical equipment in the installation groove 12. At the same time, multiple metal plates 15 will also increase the distance between the rod head 4 of the push rod 3 and the button 21. At this time, it is only necessary to screw the adjustment sleeve 5 into the installation groove 12.

[0027] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. An explosion-proof distribution box, comprising a box body (1) and a box cover (11) mounted on the box body (1), a control device (2) being fixedly arranged in the box body (1), and a plurality of buttons (21) being arranged on the control device (2), characterized in that: The box cover (11) is also provided with a plurality of adjustment holes (13), the adjustment holes (13) are internally threadedly connected with adjustment sleeves (5), the adjustment sleeve (5) is provided with a movable hole (52) penetrating the box cover (11), a push rod (3) is movably connected in the movable hole (52), one end of the push rod (3) is provided with a rod head (4) located inside the box cover (11), the rod head (4) is directly opposite to the key (21) and is spaced therefrom, and the other end of the push rod (32) is provided with a pressure head (32) located outside the box cover (11), a spring (31) elastically connecting the pressure head (32) and the adjustment sleeve (5) is provided between the pressure head (32) and the adjustment sleeve (5), when the pressure head (32) is pressed, the rod head (4) is pushed to move toward the key (21), and when the adjustment sleeve (5) rotates in the adjustment hole (13), the push rod (3) is driven to move by the spring (31) to change the distance between the rod head (4) and the key (21).

2. The explosion-proof distribution box according to claim 1, characterized in that: The push rod (3) is also provided with a horizontally extending guide groove (34), and the movable hole (52) is provided with a guide block (53) that fits and is inserted into the guide groove (34). When the pressure head (32) is pressed, the guide block (53) moves horizontally along the guide groove (34).

3. The explosion-proof distribution box according to claim 2, characterized in that: The pressure head (32) is also provided with a limit groove (33) extending into the push rod (3); the guide groove (34) is connected to the limit groove (33); the guide block (53) passes through the guide groove (34) and is inserted into the limit groove (33); a limit block (6) is threadedly connected in the limit groove (33); the limit block (6) is spaced apart from the guide block (53); after the pressure head (32) is pressed, the limit block (6) moves toward the guide block (53) until the two are in contact, and then the rod head (4) is prevented from continuing to move toward the key (21).

4. The explosion-proof distribution box according to claim 3 is characterized in that: The adjusting sleeve (5) is also provided with an adjusting head (51), the outer side of the adjusting head (51) is in the shape of a prism, and one end of the spring (31) is elastically connected to the adjusting head (51).

5. The explosion-proof distribution box according to claim 4 is characterized in that: The limit block (6) is also provided with a prismatic adjustment groove (61), the opening of the adjustment groove (61) facing the outside of the pressure head (32).

6. The explosion-proof distribution box according to claim 5, characterized in that: The rod head (4) is also provided with a fixing piece (42), and the push rod (3) is also provided with a fixing hole (41), and the fixing piece (42) is threadedly connected in the fixing hole (41) so as to detachably fix the rod head (4) on the push rod (3).

7. The explosion-proof distribution box according to claim 1, characterized in that: At least one metal plate (15) is provided between the box body (1) and the box cover (11), and the box body (1), the metal plate (15) and the box cover (11) are fitted and fixedly connected via fasteners (14).

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