Explosion-proof telephone

Abstract

The utility model discloses an explosion-proof telephone, which comprises an explosion-proof box body, an answering handle arranged on the side of the explosion-proof box body, and a handle seat arranged on the side part of the explosion-proof box body and used for supporting the answering handle, the side part of the explosion-proof box body is provided with a hollow protective cover with an opening in the front part, the protective cover surrounds the answering handle, the opening part in the front part of the protective cover is provided with a protective plate in a sliding manner, and the inner side of the protective plate is provided with a pressing piece; when the protection plate slides, the protection plate has a first position for completely closing the opening of the protection cover and a second position for completely opening the opening of the protection cover, and when the protection plate is located at the first position, a pressing piece on the inner side of the protection plate abuts against the answering handle and presses the answering handle on the handle seat. According to the utility model, the idle answering handle can be locked and protected, and the answering handle can be effectively prevented from falling off and impacting the ground due to oscillation or accidental touch, so that the service life of the answering handle is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to telephone technology field, especially a kind of explosion-proof telephone. BACKGROUND

[0002] Explosion-proof telephone is applied to power plant, chemical plant and other flammable and explosive places, all with coupler, also called coupler explosion-proof telephone.It is the terminal equipment of explosion-proof communication system, with the basic function of ordinary telephone.Explosion-proof telephone is directly connected to 24-60 volt city telephone network automatic telephone exchange and user small switch, and can be used, the explosion-proof shell of explosion-proof telephone is made of aluminum alloy casting, surface electrostatic plastic spraying, with good impact strength and protection performance.The keypad of explosion-proof telephone uses stainless steel keypad, handle uses outdoor public telephone handle, handle rope uses outdoor public telephone metal sheath cable rope, circuit components are purchased and produced according to outdoor standard, and circuit is subjected to strict explosion-proof treatment and protection treatment.

[0003] Explosion-proof telephone is specially developed for flammable and explosive places such as coal mine, and its working environment is relatively harsh, mining car or transport vehicle can work, but telephone is often caused by the vibration generated by coal mining equipment or equipment accidentally touching telephone, resulting in the loosening of the listening handle connection part falling to the ground, causing the listening handle to be severely impacted and malfunction, affecting its service life. UTILITY MODEL CONTENT

[0004] The utility model aims at providing an explosion-proof telephone, which can lock and protect the listening handle when idle, effectively avoid the listening handle from falling and impacting the ground due to vibration or accidental touch, and thus improve its service life.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: an explosion-proof telephone, comprising an explosion-proof box body, a listening handle arranged on the side of the explosion-proof box body, and a handle seat arranged on the side of the explosion-proof box body for supporting the listening handle; the side of the explosion-proof box body is provided with a protective cover which is hollow and has an open front part, and the listening handle is enclosed in the protective cover; a protective plate is slidably arranged at the open front part of the protective cover; a pressing member is arranged on the inner side of the protective plate; the protective plate has a first position at which the open front part of the protective cover is completely closed, and a second position at which the open front part of the protective cover is completely opened; and when the protective plate is at the first position, the pressing member on the inner side of the protective plate abuts against the listening handle and presses the listening handle on the handle seat.

[0006] By adopting the technical scheme, when the answering handle needs to be used, the protection plate is pushed to the second position, and the answering handle can be taken out; after the answering handle is used, the answering handle is placed on the handle seat, and then the protection plate is pushed to the first position, at this time, the pressing part on the inner side of the protection plate just presses the answering handle on the handle seat, plays a locking role on the answering handle, meanwhile, the protection cover and the protection plate surround the answering handle, so that the situation that the answering handle is accidentally touched and falls and collides with the ground is avoided, and the answering handle is protected, and the service life of the answering handle is prolonged.

[0007] The utility model further sets up, the pressing part includes base, pressing block, spring and end cover, the base is installed in the inner side of protection plate, the base is provided with guide hole through, the both ends of the guide hole are equipped with limiting flange and thread groove respectively, the pressing block is slidably arranged in the guide hole and partially extends outside the guide hole, the outer periphery of the pressing block is equipped with limiting flange for constituting stroke limiting with the limiting flange, the end cover is screwed in the thread groove, the spring is clamped between the end cover and the pressing block.

[0008] By adopting the technical scheme, the pressing part is arranged as an elastic telescopic structure, that is, the spring acts on the pressing block to press the answering handle, the adaptation degree is better, the pressing block can be adjusted, and the answering handle will not be damaged due to excessive pressing force.

[0009] The utility model further sets up, the inner end of the end cover is equipped with first positioning convex part, the inner end of the pressing block is equipped with second positioning convex part, and the both ends of the spring are respectively sleeved on the outer peripheries of the first positioning convex part and the second positioning convex part.

[0010] By adopting the technical scheme, the installation of the spring can be positioned, deviation from the gravity axis direction is avoided during extension and contraction, and the service life of the spring is prolonged.

[0011] The utility model further sets up, the outer end of the end cover is equipped with internal hexagonal groove.

[0012] By adopting the technical scheme, the internal hexagonal groove is arranged at the outer end of the end cover, a hexagonal wrench is inserted to rotate the end cover, and the end cover is more convenient to disassemble and assemble.

[0013] The utility model further sets up, the inner side of the protection plate is provided with adjusting groove along the transverse direction, the base is slidably arranged on the adjusting groove, and the upper and lower sides of the adjusting groove are respectively equipped with one guide transverse groove.

[0014] By adopting the technical scheme, the transverse position of the pressing part can be adjusted, the transverse position of the pressing part can be adjusted according to the position of the answering handle, and the answering handle can be accurately pressed.

[0015] The utility model further provides for, at least one adjusting groove's side wall is equipped with the wave shape positioning portion, the directing convex strip is equipped with the positioning convex that accords with the wave shape positioning portion.

[0016] By adopting the above technical scheme, the positioning convex can be matched with one of the grooves of the wave shape positioning portion, thereby realizing the positioning effect of the compression member at a specific position and ensuring that the compression member will not easily deviate after the horizontal position is adjusted.

[0017] The utility model further provides for, the upper and lower ends of the protective cover are respectively equipped with upper and lower holes for the protective plate to pass through, the side of the protective cover is provided with a sliding hole in the vertical direction, one side of the protective plate is provided with a connecting rod, the connecting rod passes through the sliding hole and extends to the outside of the protective cover, and the outer end of the connecting rod is detachably connected with a push-torque.

[0018] By adopting the above technical scheme, the vertical sliding function of the protective plate can be realized.

[0019] The utility model further provides for, the side of the protective plate is also provided with a damping convex near the lower end, when the protective plate is located at the first position, the damping convex is in damping cooperation with the inner wall of the upper hole.

[0020] By adopting the above technical scheme, when the protective plate is closed, the damping convex on its surface is in damping cooperation with the inner wall of the upper hole of the protective cover, so that it can be maintained at the first position by friction force and will not slide down due to its own gravity.

[0021] The utility model further provides for, the bottom of the protective cover is also provided with a gap for the compression member to pass through, and the gap is in communication with the lower hole.

[0022] By adopting the above technical scheme, the smooth up-and-down sliding of the protective plate can be ensured without interference. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 It is the structural schematic view when the protective plate of the utility model is located at the first position;

[0024] Figure 2 It is the structural schematic view when the protective plate of the utility model is located at the second position;

[0025] Figure 3 It is the structural schematic view when the protective plate of the utility model is removed;

[0026] Figure 4 It is the sectional view when the protective plate of the utility model is located at the first position;

[0027] Figure 5It is the structure schematic view of the compression part of the utility model.

[0028] Figure 6 It is the sectional view of the compression part of the utility model.

[0029] Figure 7 It is the structure schematic view of the protection plate of the utility model.

[0030] In the drawing: 1, explosion-proof box body; 2, listen to handle; 3, handle seat; 4, protective cover; 5, protection plate; 6, compression part; 7, base; 8, compression block; 9, spring; 10, end cover; 11, guide hole; 12, limiting flange; 13, thread groove; 14, limiting convex edge; 15, first positioning convex part; 16, second positioning convex part; 17, internal hexagonal groove; 18, adjusting groove; 19, guide transverse groove; 20, guide convex strip; 21, wave-shaped positioning part; 22, positioning protrusion; 23, upper hole; 24, lower hole; 25, sliding hole; 26, connecting rod; 27, push twist; 28, damping protrusion; 29, let go of slot. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0032] Embodiment: as attached Figures 1-7The shown explosion-proof telephone comprises an explosion-proof box body 1, a listening handle 2 arranged at the side of the explosion-proof box body 1, and a handle seat 3 arranged at the side of the explosion-proof box body 1 for supporting the listening handle 2, the handle seat 3 being connected to the side of the explosion-proof box body 1 through screws; the side of the explosion-proof box body 1 is provided with a protection cover 4 which is hollow and has an opening at the front, and the protection cover 4 surrounds the listening handle 2, a protection plate 5 being slidingly arranged at the opening of the protection cover 4, a pressing member 6 being arranged at the inner side of the protection plate 5, the protection plate 5 having a first position (closed position) at which the opening of the protection cover 4 is completely closed and a second position (opened position) at which the opening of the protection cover 4 is completely opened when the protection plate 5 slides, and when the protection plate 5 is at the first position, the pressing member 6 at the inner side of the protection plate 5 abuts against the listening handle 2 and presses the listening handle 2 against the handle seat 3. When the listening handle 2 needs to be used, the protection plate 5 is pushed to the second position, and the listening handle 2 can be taken out; after the listening handle 2 is used, the listening handle 2 is placed on the handle seat 3, and then the protection plate 5 is pushed to the first position, at this time, the pressing member 6 at the inner side of the protection plate 5 just presses the listening handle 2 against the handle seat 3, thereby locking the listening handle 2, meanwhile, the protection cover 4 surrounds the listening handle 2 together with the protection plate 5, which can avoid the listening handle 2 from falling and hitting the ground due to accidental touch, thereby protecting the listening handle 2 and prolonging the service life of the listening handle 2.

[0033] As shown in the accompanying drawings, Figures 4-7 The pressing member 6 comprises a base 7, a pressing block 8, a spring 9 and an end cover 10, the base 7 being arranged at the inner side of the protection plate 5, a guide hole 11 being through-arranged on the base 7, the guide hole 11 being a circular hole, a limiting flange 12 and a threaded groove 13 being arranged at positions corresponding to both ends of the guide hole 11, the limiting flange 12 being of an integral structure with the base 7, the pressing block 8 being slidingly arranged in the guide hole 11 and partially extending outside the guide hole 11, the pressing block 8 being of a cylindrical structure, a limiting flange 14 being arranged at the outer periphery of the pressing block 8 for limiting the stroke together with the limiting flange 12, the end cover 10 being threadedly connected in the threaded groove 13, i.e. the end cover 10 has external threads matched with the threaded groove 13, and the spring 9 being clamped between the end cover 10 and the pressing block 8. The pressing member 6 is arranged to be elastically and telescopically adjustable, i.e. the spring 9 acts on the pressing block 8 to press the listening handle 2, which is better in adaptability, and the pressing block 8 is adjustable and will not damage the listening handle 2 due to excessive pressing force.

[0034] As shown in the accompanying drawings, Figure 6As shown, the inner end of the end cap 10 is provided with a first positioning protrusion 15, and the inner end of the pressure block 8 is provided with a second positioning protrusion 16. Both the first positioning protrusion 15 and the second positioning protrusion 16 have circular cross-sections. The two ends of the spring 9 are respectively fitted onto the outer periphery of the first positioning protrusion 15 and the second positioning protrusion 16. This design can effectively position the spring 9 during installation, preventing deformation that deviates from the direction of gravity axis during extension and contraction, thereby improving its service life.

[0035] As attached Figure 6 As shown, the outer end of the end cap 10 is provided with an internal hexagonal groove 17. The internal hexagonal groove 17 on the outer end of the end cap 10 facilitates the insertion of a hex wrench to rotate it, making the disassembly and assembly of the end cap 10 more convenient.

[0036] As attached Figures 4-7 As shown, the inner side of the protective plate 5 is provided with an adjustment groove 18 along the horizontal direction. The base 7 is slidably disposed on the adjustment groove 18. A guide groove 19 is provided on the upper and lower sides of the adjustment groove 18, and a guide protrusion 20 is provided on the upper and lower sides of the base 7 to cooperate with the corresponding guide groove 19. The horizontal position of the clamping member 6 is adjustable. The horizontal position of the clamping member 6 can be adjusted according to the position of the receiver handle 2 so that it can accurately clamp the receiver handle 2.

[0037] As attached Figures 4-7 As shown, at least one adjusting groove 18 has a wave-shaped positioning part 21 on its side wall, and the guide ridge 20 has a positioning protrusion 22 that matches the wave-shaped positioning part 21. The positioning protrusion 22 can match one of the grooves of the wave-shaped positioning part 21, thereby realizing the positioning function of the clamping member 6 in a specific position and ensuring that the clamping member 6 will not easily shift after the lateral position is adjusted.

[0038] As attached Figure 3 and attached Figure 7 As shown, the protective cover 4 has an upper hole 23 and a lower hole 24 at its upper and lower ends, respectively, for the protective plate 5 to pass through. A sliding hole 25 is vertically arranged on the side of the protective cover 4. A connecting rod 26 is provided on one side of the protective plate 5. The connecting rod 26 passes through the sliding hole 25 and extends to the outside of the protective cover 4. A push knob 27 is detachably connected to the outer end of the connecting rod 26. More specifically, the push knob 27 and the protective plate 5 each have a circular hole for insertion. This allows the protective plate 5 to slide vertically.

[0039] As attached Figure 7As shown, the side of the guard plate 5 near the lower end is also provided with a damping protrusion 28. When the guard plate 5 is in the first position, the damping protrusion 28 is in damping cooperation with the inner wall of the upper hole 23. The damping protrusion 28 can be an integral structure of the guard plate 5, or can be a silica gel sheet which is bonded to the guard plate 5 by glue. When the guard plate 5 is closed, the damping protrusion 28 on the surface thereof is in damping cooperation with the inner wall of the upper hole 23 of the guard cover 4, so that it can be maintained in the first position by friction force and will not slide down due to its own gravity.

[0040] As shown in the accompanying drawings, the guard cover 4 is provided with a lower hole 24 which is in communication with the upper hole 23. Figure 3 As shown, the bottom of the guard cover 4 is also provided with a gap slot 29 for the passing of the pressing member 6, and the gap slot 29 is in communication with the lower hole 24. In addition, the telephone line can also pass through the gap slot 29. This design can ensure that the guard plate 5 can smoothly slide up and down without interference.

Claims

1. An explosion-proof telephone, comprising an explosion-proof box body (1), a receiving handle (2) arranged on the side of the explosion-proof box body (1), and a handle seat (3) arranged on the side of the explosion-proof box body (1) for supporting the receiving handle (2); characterized in that: The explosion-proof box (1) is provided with a hollow and front opening protective cover (4), and the listening handle (2) is surrounded by the protective cover (4), the front opening part of the protective cover (4) is slidably provided with a protective plate (5), the inner side of the protective plate (5) is provided with a pressing part (6), the protective plate (5) has a first position for completely closing the opening of the protective cover (4) and a second position for completely opening the opening of the protective cover (4) when sliding, and when the protective plate (5) is in the first position, the pressing part (6) on the inner side of the protective plate (5) abuts against the listening handle (2) and presses the listening handle (2) on the handle seat (3).

2. The explosion-proof telephone set according to claim 1, characterized in that: The pressing part (6) comprises a base (7), a pressing block (8), a spring (9) and an end cover (10), the base (7) is installed on the inner side of the protective plate (5), the base (7) is provided with a guide hole (11) penetrating therethrough, the base (7) is provided with a limiting flange (12) and a threaded groove (13) at positions corresponding to both ends of the guide hole (11), the pressing block (8) is slidably arranged in the guide hole (11) and partially extends outside the guide hole (11), the outer periphery of the pressing block (8) is provided with a limiting flange (14) for limiting the stroke with the limiting flange (12), the end cover (10) is threadedly connected in the threaded groove (13), and the spring (9) is clamped between the end cover (10) and the pressing block (8).

3. The explosion-proof telephone set according to claim 2, characterized in that: The inner end of the end cover (10) is provided with a first positioning protrusion (15), the inner end of the pressing block (8) is provided with a second positioning protrusion (16), and the two ends of the spring (9) are respectively sleeved on the outer periphery of the first positioning protrusion (15) and the second positioning protrusion (16).

4. The explosion-proof telephone set according to claim 2, characterized in that: The outer end of the end cover (10) is provided with an inner hexagonal groove (17).

5. The explosion-proof telephone set according to claim 2, characterized in that: The inner side of the protective plate (5) is provided with an adjusting groove (18) in the transverse direction, the base (7) is slidably arranged on the adjusting groove (18), and the upper and lower sides of the adjusting groove (18) are respectively provided with a guide transverse groove (19), and the upper and lower sides of the base (7) are respectively provided with a guide convex strip (20) matched with the corresponding guide transverse groove (19).

6. The explosion-proof telephone set according to claim 5, characterized in that: At least one side wall of the adjusting groove (18) is provided with a wave-shaped positioning part (21), and the guide convex strip (20) is provided with a positioning protrusion (22) matched with the wave-shaped positioning part (21).

7. The explosion-proof telephone set according to claim 1, characterized in that: The upper and lower ends of the protective cover (4) are respectively provided with an upper hole (23) and a lower hole (24) for the protective plate (5) to pass through, the side of the protective cover (4) is provided with a sliding hole (25) in the vertical direction, one side of the protective plate (5) is provided with a connecting rod (26), the connecting rod (26) passes through the sliding hole (25) to the outside of the protective cover (4), and the outer end of the connecting rod (26) is detachably connected with a push and twist (27).

8. The explosion-proof telephone set according to claim 7, characterized in that: The side of the protective plate (5) is also provided with a damping protrusion (28) near the lower end, and when the protective plate (5) is in the first position, the damping protrusion (28) is in damping cooperation with the inner wall of the upper hole (23).

9. The explosion-proof telephone set according to claim 7, characterized in that: The bottom of the protective cover (4) is further provided with a gap slot (29) for the passing of the pressing member (6), and the gap slot (29) is communicated with the lower hole (24).

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