Novel anti-shock wave button protection box

Abstract

The utility model discloses a novel shock-wave-proof button protection box, which belongs to the technical field of protection engineering and comprises a shell provided with an accommodating cavity used for accommodating a call button; the bottom plate is arranged at the front end of the shell, and the bottom plate is provided with a center hole right opposite to the button; the cover plate is located on the front side of the shell, and the cover plate is connected with the shell; the shock wave preventing assembly comprises a baffle and a handle protruding out of the inner wall of the baffle, the baffle is installed in the cover plate, the baffle is provided with an eccentric hole, and the handle is used for changing the relative position of the eccentric hole and the center hole so that the eccentric hole can directly face or deviate from the center hole; the positioning device is located between the baffle and the cover plate and used for preventing the baffle from shifting when the baffle is in the full-opening position and the full-closing position. The problem that in the prior art, a call button is located on the outer side of a protective door and is prone to being damaged by shock waves is solved, and the stability when the baffle is in place is guaranteed through the positioning device.

Description

Technical Field

[0001] This utility model belongs to the field of protective engineering technology and relates to a novel shock wave-proof button protection box. Background Technology

[0002] The call button (full name: civil defense and explosion-proof call button) is a device used to communicate between the outside of a wartime shelter and the inside of the shelter. It is usually pre-embedded in the wall. Simply put, a suitable location is selected at the door of the wall to make a hole, then the button is inserted, the cable is run through a steel pipe to the back of the door, and finally the button is fixed with cement or other materials.

[0003] Because the call button is located on the outside of the protective door, it is susceptible to damage from shock waves during long-term use. In addition, under the influence of strong shock waves, the button may sometimes fall off the wall.

[0004] Therefore, it is necessary to provide a protective box to prevent shock waves from damaging the button. Utility Model Content

[0005] To at least address the problem in the prior art where the call button is located outside the protective door and is easily damaged by shock waves, this utility model provides the following technical solution: a novel shock wave-resistant button protection box, the button protection box comprising:

[0006] A housing having a cavity for accommodating a call button;

[0007] A base plate, which is inserted into the front end of the housing, has a central hole that is directly opposite the button;

[0008] A cover plate, the cover plate being located on the front side of the housing and connected to the housing;

[0009] A shockwave protection assembly, comprising: a baffle and a handle protruding from the inner wall of the baffle, the baffle being installed within a cover plate, the baffle having an eccentric hole, and the handle being used to change the relative position of the eccentric hole and the central hole, so that the eccentric hole is directly opposite to or offset from the central hole; and

[0010] A positioning device is located between the baffle and the cover plate to prevent the baffle from shifting when it is fully open or fully closed.

[0011] Optionally, in the above-described novel shockwave-resistant button protection box, the baffle is slidably connected to the cover plate; or

[0012] The baffle is rotatably connected to the cover plate.

[0013] Optionally, in the above-mentioned novel shock wave resistant button protection box, the diameter of the eccentric hole is the same as the diameter of the central hole;

[0014] When the baffle is in the fully closed position, the axis of the eccentric hole is offset by 2 to 5 centimeters relative to the axis of the central hole;

[0015] When the baffle is in the fully open position, the eccentric hole and the central hole are on the same straight line.

[0016] Optionally, in the above-mentioned novel shock wave protection box for buttons, when the baffle and the cover are slidably connected, a track is horizontally provided on the cover, and the baffle is slidably located within the track;

[0017] The cover plate has an operating hole that is directly opposite the central hole, and the operating hole extends from the rear end of the cover plate into the inner cavity of the track.

[0018] Optionally, in the above-mentioned novel shock wave resistant button protection box, the positioning device includes: a compression spring and a positioning ball;

[0019] The baffle is rectangular, and a spring hole is provided at the lower part of the baffle;

[0020] The compression spring is installed in the spring hole, and one end of the compression spring is connected to the positioning ball;

[0021] The lower part of the cover plate has two positioning grooves along the length of the track. One positioning groove is located below the operating hole, and the other positioning groove is located on one side of the operating hole. The positioning grooves are conical in shape.

[0022] The diameter of the positioning ball is smaller than the diameter of the positioning groove;

[0023] The positioning ball slides in contact with one side of the track. When the baffle is in the fully open or fully closed position, the positioning ball is located in the positioning groove at the target position.

[0024] Optionally, in the above-mentioned novel shock wave protection button box, when the baffle and the cover are rotatably connected, the rear end of the cover is provided with a receiving groove, and the front end of the cover is provided with an operating hole communicating with the receiving groove.

[0025] The operating hole is offset relative to the center hole;

[0026] The baffle is circular and rotates within the receiving groove. The eccentric hole and the handle are both located inside the operating hole, and the eccentric hole is eccentrically positioned relative to the operating hole.

[0027] Optionally, in the above-mentioned novel shock wave resistant button protection box, the positioning device includes: a compression spring and a positioning ball;

[0028] Two positioning grooves are formed on the side wall of the operating hole. The two positioning grooves are symmetrically distributed about the axis of the operating hole, and the positioning grooves are conical.

[0029] The compression spring is installed in a spring hole on the side of the handle away from the eccentric hole, and one end of the compression spring is connected to the positioning ball;

[0030] The diameter of the positioning ball is smaller than the diameter of the positioning groove;

[0031] The positioning ball rolls in contact with the side wall of the operating hole, and when the baffle is in the fully open or fully closed position, the positioning ball is located in the positioning groove.

[0032] Optionally, in the above-mentioned novel shock wave protection box for buttons, when the baffle is in the fully closed position, the deviation direction of the operating hole relative to the central hole is consistent with the deviation direction of the eccentric hole relative to the eccentric hole.

[0033] Optionally, in the above-mentioned novel shock wave protection box for buttons, the base plate is flush with the front end of the housing, and the base plate and the housing are detachably connected;

[0034] The side wall of the housing has a wire hole for leading out the cable of the button.

[0035] Optionally, in the above-mentioned novel shock wave resistant button protection box, the diameter of the rear end of the housing is larger than the diameter of the middle part of the housing, which is beneficial for anchoring in concrete.

[0036] The beneficial effects of the technical solution provided by this utility model embodiment are:

[0037] This application solves the problem of the call button being located between the base plate and the cover plate on the front side of the call button by setting an anti-shock wave assembly. The baffle in the anti-shock wave assembly has an eccentric hole, and a handle is used to change the relative position of the eccentric hole and the center hole of the base plate, so that the eccentric hole and the center hole are aligned or offset. When they are aligned, that is, when the baffle is fully open, the axis of the eccentric hole and the axis of the center hole are on the same straight line, and a finger can be inserted to press the button. When they are offset, that is, when the baffle is fully closed, the eccentric hole is set higher relative to the center hole, and the lower part of the baffle can cover the center hole of the base plate, thereby protecting the internal button. This solves the problem in the prior art that the call button is located outside the protective door and is easily damaged by shock waves.

[0038] This application provides a positioning device between the baffle and the cover plate to prevent the baffle from shifting when it is fully open or fully closed, thus ensuring the stability of the baffle when it is in position. Attached Figure Description

[0039] Figure 1 This is a structural schematic diagram of a novel shockwave-proof button protection box provided in Embodiment 1 of this utility model;

[0040] Figure 2 A front view structural schematic diagram of a novel shock wave-proof button protection box (with baffle in the fully closed position) provided for Embodiment 1 of this utility model;

[0041] Figure 3 A front view structural schematic diagram of a novel shock wave-proof button protection box (baffle in the fully open position) provided for Embodiment 1 of this utility model;

[0042] Figure 4 For along Figure 2 A schematic diagram of the AA cross-sectional structure in the diagram;

[0043] Figure 5 For along Figure 2 Schematic diagram of the BB cross-sectional structure in the middle;

[0044] Figure 6 This is a schematic diagram of the structure of the cover plate in a novel shock wave-proof button protection box provided in Embodiment 1 of this utility model;

[0045] Figure 7 For along Figure 6 Schematic diagram of the CC cross-section structure in the diagram;

[0046] Figure 8 This is a schematic diagram of the structure of a baffle in a novel shockwave-proof button protection box provided in Embodiment 1 of this utility model;

[0047] Figure 9 For along Figure 8 Schematic diagram of the DD cross-sectional structure in the middle;

[0048] Figure 10 For along Figure 8 Schematic diagram of the EE cross-section structure in the diagram;

[0049] Figure 11 This is a front view structural diagram of a novel shock wave-proof button protection box (with baffle in the fully open position) provided in Embodiment 2 of this utility model;

[0050] In the diagram: 1. Housing; 101. Rear plate; 102. Wire hole; 2. Cover plate; 201. Positioning groove; 202. Operating hole; 203. Receiving groove; 204. Track; 3. Base plate; 301. Center hole; 4. Baffle; 401. Eccentric hole; 5. Positioning device; 501. Compression spring; 502. Positioning ball; 6. Handle; 601. Spring hole; 7. Button; 8. First screw; 9. Washer; 10. Second screw; 11. Cork pad; The area inside the dashed box represents the concrete wall, and the area outside the dashed box represents the outer surface of the wall. Detailed Implementation

[0051] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.

[0052] In the description of this utility model, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," and "bottom," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and do not require that this utility model be constructed and operated in a specific orientation; therefore, they should not be construed as limitations on this utility model. The terms "connected," "linked," and "set up" used in this utility model should be interpreted broadly. For example, they can refer to a fixed connection or a detachable connection; a direct connection or an indirect connection through intermediate components; a wired connection, a radio connection, or a wireless communication signal connection. Those skilled in the art can understand the specific meaning of the above terms according to the specific circumstances.

[0053] Please see Figure 1-11 This utility model provides the following technical solution: a novel shockwave-proof button protection box. The button protection box of this application includes: a housing 1, a base plate 3, a cover plate 2, an shockwave-proof assembly, and a positioning device 5. The housing 1 has a cavity for accommodating the call button 7 (i.e., the civil defense and explosion-proof call button 7, hereinafter referred to as button 7). In actual installation, a cork pad 11 can be placed between the bottom of the housing 1 and the button 7 to facilitate the fixing of the switch. The base plate 3 is inserted into the front end of the housing 1 (at...). Figure 5In the image shown, the right side of the housing 1 is the front direction, and the left side is the rear direction. The base plate 3 has a central hole 301 (i.e., the central opening of the base plate 3, hence the name central hole 301) directly opposite the button 7. The central hole 301 and the axis of the button 7 are on the same straight line, so that the button 7 inside the housing 1 can be pressed after the finger passes through the central hole 301. The cover plate 2 is located on the front side of the housing 1 and is connected to the housing 1. It can be connected by means of connectors (including the first screw 8 and the washer 9) or by welding, etc. This embodiment does not limit the specific connection method between the two. The shock wave protection assembly includes: a baffle 4 and a handle 6 protruding from the inner wall of the baffle 4. The baffle 4 is installed in the cover plate 2 using common techniques in the art. The baffle 4 has an eccentric hole 401, combined with Figure 8 The eccentric hole 401 of the baffle 4 and the center line of the baffle 4 (and the center hole 301 of the base plate 3) are not on the same straight line. The handle 6 is used to change the relative position of the eccentric hole 401 and the center hole 301, so that the eccentric hole 401 and the center hole 301 are aligned or offset. When they are aligned, that is, when the baffle 4 is in the fully open position (when the call button 7 needs to be pressed), the axis of the eccentric hole 401 and the axis of the center hole 301 are on the same straight line, and a finger can be inserted to press the button 7. When they are offset, that is, when the baffle 4 is in the fully closed position (when it is not in use), the handle 6 is used to change the relative position of the eccentric hole 401 and the center hole 301. Figure 5 In the image shown, the eccentric hole 401 is positioned slightly above the central hole 301, and the lower part of the baffle 4 can cover the central hole 301 of the base plate 3, thereby protecting the internal button 7. The positioning device 5 is located between the baffle 4 and the cover plate 2. The positioning device 5 is used to fix the position of the baffle 4, preventing the baffle 4 from shifting when it is fully open or fully closed, and ensuring the stability of the baffle 4 when it is in position.

[0054] Combination Figure 11 The baffle 4 is slidably connected to the cover plate 2; or combined with Figure 5 The baffle 4 is rotatably connected to the cover plate 2. In this embodiment, the relative position of the eccentric hole 401 and the central hole 301 is changed by sliding or rotating. When the call button 7 needs to be pressed, the eccentric hole 401 and the central hole 301 are aligned; when the call button 7 is not used, the eccentric hole 401 and the central hole 301 are offset. This can prevent the shock wave from damaging the button 7.

[0055] The diameter of the eccentric hole 401 is the same as the diameter of the central hole 301. When the baffle 4 is in the fully closed position, the axis of the eccentric hole 401 deviates from the axis of the central hole 301 by 2-5 cm, for example: 2 cm, 3 cm, 4 cm, 5 cm, or other values. This allows for better protection against shock waves. Figure 5 In the image shown, the lower part of the baffle 4 can protect the button 7. When the baffle 4 is in the fully open position, the eccentric hole 401 and the central hole 301 are on the same straight line, making it easy to insert a finger into the central hole 301 and press the button.

[0056] When the baffle 4 and the cover plate 2 are slidably connected, they combine Figure 11 A track 204 is horizontally provided on the cover plate 2, and the baffle 4 is rectangular. An operating hole 202 (not shown in the figure) is provided on the cover plate 2, directly opposite the central hole 301, extending from the rear end of the cover plate 2 into the inner cavity of the track 204. The baffle 4 is rectangular and located within the track 204. By moving the handle 6, the handle 6 moves the baffle 4 in the same direction along the track 204, causing the eccentric hole 401 to be directly opposite or offset from the central hole 301, thus changing the relative position of the eccentric hole 401 and the central hole 301 (or the operating hole 202). Further, the positioning device 5 specifically includes a compression spring 501 and a positioning ball 502. A spring hole 601, cylindrical in shape, is provided at the lower part of the baffle 4. A compression spring 501 is installed inside the spring hole 601, and one end of the compression spring 501 is connected to a positioning ball 502, which can be a ball structure such as a steel ball. Two positioning grooves 201 are formed on the lower part of the cover plate 2 along the length of the track 204. One positioning groove 201 is located directly below the operating hole 202, and the other positioning groove 201 is located on one side of the operating hole 202. The diameter of the positioning groove 201 is larger than the diameter of the positioning ball 502. The positioning ball 502 slides in contact with one side of the track 204. When the baffle 4 is in the fully open or fully closed position, the positioning ball 502 is inserted into the positioning groove 201 at the corresponding position (i.e., the target position). Preferably, the positioning groove 201 is conical to facilitate the entry and exit of the positioning ball 502. One end of the compression spring 501 is (fixed) connected to the positioning ball 502, and the other end of the compression spring 501 can be fixedly connected to or in contact with the bottom of the spring hole 601, as long as the compression spring 501 is always located within the spring hole 601. When the call button 7 needs to be pressed, the baffle 4 is moved to the fully open position using the handle 6. Under the action of the compression spring 501, the positioning ball 502 is inserted into the positioning groove 201. At this time, the eccentric hole 401 and the center hole 301 (or operating hole 202) are on the same straight line, making it convenient to press the call button 7. Similarly, when not in use (i.e., when the call button 7 is not used), the baffle 4 is moved to the fully closed position using the handle 6. Under the action of the compression spring 501, the positioning ball 502 is inserted into another positioning groove 201 (see schematic diagram). Figure 11 At this point, the eccentric hole 401 is at its maximum deviation from the central hole 301 (or operating hole 202), and the baffle 4 completely blocks the operating hole 202 (and the central hole 301), providing protection. This allows the positioning device 5 (compression spring 501) to self-lock, preventing the baffle 4 from shifting. It should be noted that when the positioning device 5 is unlocked (or opened), a certain force is applied to the handle 6, causing the positioning ball 502 to roll out of the positioning groove 201. The self-locking function of the positioning device 5 also prevents the housing 1 from being easily opened. Furthermore, the button protection box of this application does not... Figure 11For other structures shown (or obscured by cover plate 2), please refer to... Figure 1 and Figure 5 That's all.

[0057] When the baffle 4 and the cover plate 2 are rotatably connected, they combine Figure 7 The rear end of the cover plate 2 has a receiving groove 203, and the front end of the cover plate 2 has an operating hole 202 communicating with the receiving groove 203. The operating hole 202 is eccentrically positioned relative to the center hole 301 of the base plate 3. Figure 2 The intersection of dashed lines AA and BB is on the same straight line as the center hole 301. That is, the axis of the operating hole 202 and the axis of the center hole 301 are not on the same straight line. In other words, when combined... Figure 6 The operating hole 202 is not located at the center of the cover plate 2. The shape of the receiving groove 203 is consistent with the shape of the baffle 4. For smoother rotation and more even force distribution, the shape of the baffle 4 is preferably cylindrical. The baffle 4 is placed in the receiving groove 203, with the eccentric hole 401 and the handle 6 located inside the operating hole 202. The eccentric hole 401 is eccentrically set with the operating hole 202, that is, the axis of the eccentric hole 401 and the axis of the operating hole 202 are not on the same straight line. Normally, the baffle 4 is fixed in the fully open position. The handle 6 is used to rotate the baffle 4 in the receiving groove 203, so that the baffle 4 (the part without the eccentric hole 401) completely blocks the central hole 301, thereby preventing the shock wave from damaging the button 7. Furthermore, when the baffle 4 is in the fully closed position, the deviation direction of the operating hole 202 relative to the central hole 301 is consistent with the deviation direction of the eccentric hole 401 relative to the operating hole 202. Figure 2 In the image shown, the eccentric hole 401 is positioned slightly higher than the central hole 301. At this time, the handle 6 is located on the baffle 4 below the eccentric hole 401. Under the influence of gravity, this facilitates the automatic reset of the baffle 4 during normal operation (meaning the baffle 4 returns to the fully closed position) and also helps the baffle 4 to stably bear the load during shock waves. It should be noted that, in conjunction with... Figure 3 When baffle 4 is in the fully open position, since the eccentric hole 401 and the central hole 301 are on the same straight line, handle 6 is located on baffle 4 above the eccentric hole 401. Furthermore, in conjunction with... Figure 5 The positioning device 5 specifically includes a compression spring 501 and a positioning ball 502. Two positioning grooves 201 are formed on the side wall of the operating hole 202. The two positioning grooves 201 are symmetrically distributed about the axis of the operating hole 202. One positioning groove 201 corresponds to the position of the positioning ball 502 on the cover plate 2 when the baffle 4 is fully closed (i.e., the first connection position), and the other positioning groove 201 corresponds to the position of the positioning ball 502 on the cover plate 2 when the baffle 4 is fully open (i.e., the second connection position). Figure 5In the image shown, two positioning grooves 201 are arranged vertically. The positioning ball 502 can be a ball structure such as a steel ball, and the diameter of the positioning ball 502 is smaller than the diameter of the positioning groove 201. The compression spring 501 is installed in the spring hole 601 on the side of the handle 6 away from the eccentric hole 401, and is combined with... Figure 10 The orientation of the spring hole 601 is perpendicular to that of the eccentric hole 401, and the spring hole 601 is cylindrical. One end of the compression spring 501 is fixedly connected to the positioning ball 502, and the other end of the compression spring 501 can be fixedly connected to or in contact with the bottom of the spring hole 601, as long as the compression spring 501 is always located within the spring hole 601. It should be noted that the spring hole 601 is cylindrical, and the position of the spring hole 601 is shown in [reference needed]. Figure 8 Furthermore, the axis of the spring hole 601 bisects the axial section of the baffle 4 and the axial section of the eccentric hole 401. When the baffle 4 is rotated by the handle 6, the positioning ball 502 rolls into contact with the side wall of the operating hole 202. When the baffle 4 is in the fully open position, under the action of the compression spring 501, the positioning ball 502 sinks into the positioning groove 201 at the target position. At this time, the eccentric hole 401 and the center hole 301 are on the same straight line, which makes it easy to press the call button 7. Similarly, when the baffle 4 is rotated in the opposite direction by the handle 6, when the baffle 4 is in the fully closed position, the positioning ball 502 sinks into another positioning groove 201 under the action of the compression spring 501. At this time, the eccentric hole 401 and the center hole 301 are at their maximum deviation distance, so that the baffle 4 completely blocks the operating hole 202 (and the center hole 301) to play a protective role. In this way, the self-locking function of the positioning device 5 (referring to the spring 501) can be realized to prevent the baffle 4 from shifting. It should be noted that when the positioning device 5 is unlocked (or opened), the handle 6 is turned with a little force to make the positioning ball 502 roll out of the positioning groove 201. The self-locking function of the positioning device 5 can also prevent the housing 1 from being easily opened.

[0058] Combination Figure 3 and 4 The base plate 3 is flush with the front end of the housing 1, and the base plate 3 and housing 1 are detachably connected, for example, by means of a second screw 10, which facilitates the installation and removal of the button 7. Figure 1 The housing 1 has a wire hole 101 on its side wall for leading out the cable of the button 7. In actual use, the housing 1 is embedded in the wall and is cast as a whole with the concrete of the wall. The cable of the button 7 passes through the wire hole 101 and then goes through a steel pipe to the back of the door, thus realizing the pre-embedding of the cable of the button 7.

[0059] Combination Figure 1 The diameter of the rear end of the housing 1 is larger than the diameter of the middle part of the housing 1, which is beneficial for anchoring in concrete. In this embodiment, the rear end of the housing 1 (also called the rear plate 101) is thickened, which can enhance the installation strength of the button 7 box and ensure that the button 7 box will not fall off under high strength.

[0060] As is known from common technical knowledge, this utility model can be implemented through other embodiments that do not depart from its spirit or essential characteristics. Therefore, the disclosed embodiments described above are merely illustrative in all respects and are not the only ones. All modifications within the scope of this utility model or its equivalents are included in this utility model.

Claims

1. A novel shockwave-resistant button protection box, characterized in that, The button protection box includes: A housing having a cavity for accommodating a call button; A base plate, which is inserted into the front end of the housing, has a central hole that is directly opposite the button; A cover plate, the cover plate being located on the front side of the housing and connected to the housing; A shockwave protection assembly, comprising: a baffle and a handle protruding from the inner wall of the baffle, the baffle being installed within a cover plate, the baffle having an eccentric hole, and the handle being used to change the relative position of the eccentric hole and the central hole, so that the eccentric hole is directly opposite to or offset from the central hole; and A positioning device is located between the baffle and the cover plate to prevent the baffle from shifting when it is fully open or fully closed.

2. The novel shockwave-resistant button protection box according to claim 1, characterized in that, The baffle is slidably connected to the cover plate; or The baffle is rotatably connected to the cover plate.

3. The novel shockwave-resistant button protection box according to claim 1, characterized in that, The diameter of the eccentric hole is the same as the diameter of the central hole; When the baffle is in the fully closed position, the axis of the eccentric hole is offset by 2 to 5 centimeters relative to the axis of the central hole; When the baffle is in the fully open position, the eccentric hole and the central hole are on the same straight line.

4. The novel shockwave-resistant button protection box according to claim 2, characterized in that, When the baffle is slidably connected to the cover plate, a horizontal track is provided on the cover plate, and the baffle slides within the track. The cover plate has an operating hole that is directly opposite the central hole, and the operating hole extends from the rear end of the cover plate into the inner cavity of the track.

5. The novel shockwave-resistant button protection box according to claim 4, characterized in that, The positioning device includes: a compression spring and a positioning ball; The baffle is rectangular, and a spring hole is provided at the lower part of the baffle; The compression spring is installed in the spring hole, and one end of the compression spring is connected to the positioning ball; The lower part of the cover plate has two positioning grooves along the length of the track. One positioning groove is located below the operating hole, and the other positioning groove is located on one side of the operating hole. The positioning grooves are conical in shape. The diameter of the positioning ball is smaller than the diameter of the positioning groove; The positioning ball slides in contact with one side of the track. When the baffle is in the fully open or fully closed position, the positioning ball is located in the positioning groove at the target position.

6. The novel shockwave-resistant button protection box according to claim 2, characterized in that, When the baffle is rotatably connected to the cover plate, the rear end of the cover plate is provided with a receiving groove, and the front end of the cover plate is provided with an operating hole communicating with the receiving groove. The operating hole is offset relative to the center hole; The baffle is circular and rotates within the receiving groove. The eccentric hole and the handle are both located inside the operating hole, and the eccentric hole is eccentrically positioned relative to the operating hole.

7. The novel shockwave-resistant button protection box according to claim 6, characterized in that, The positioning device includes: a compression spring and a positioning ball; Two positioning grooves are formed on the side wall of the operating hole. The two positioning grooves are symmetrically distributed about the axis of the operating hole, and the positioning grooves are conical. The compression spring is installed in a spring hole on the side of the handle away from the eccentric hole, and one end of the compression spring is connected to the positioning ball; The diameter of the positioning ball is smaller than the diameter of the positioning groove; The positioning ball rolls in contact with the side wall of the operating hole, and when the baffle is in the fully open or fully closed position, the positioning ball is located in the positioning groove.

8. The novel shockwave-resistant button protection box according to claim 6, characterized in that, When the baffle is in the fully closed position, the deviation direction of the operating hole relative to the central hole is the same as the deviation direction of the eccentric hole relative to the eccentric hole.

9. The novel shockwave-resistant button protection box according to claim 1, characterized in that, The base plate is flush with the front end of the housing, and the base plate and the housing are detachably connected. The side wall of the housing has a wire hole for leading out the cable of the button.

10. The novel shockwave-resistant button protection box according to claim 1, characterized in that, The diameter of the rear end of the shell is larger than the diameter of the middle part of the shell, which facilitates anchoring in concrete.

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