A shock overload alarm device

Abstract

The application discloses an impact overload alarm device, which comprises a lower cover, an upper cover combination connected with the lower cover, a mass block arranged between the lower cover and the upper cover combination, a first spring connecting the mass block with the lower cover, a guide shaft arranged in the upper cover combination in a horizontal direction, a second spring and a sleeve arranged on the guide shaft, the two ends of the second spring abutting against the inner wall of the upper cover combination and the sleeve respectively, a limiting column arranged on the top of the mass block, the height of the limiting column being less than the vertical distance between the mass block and the lower cover, a conductive sheet arranged in the upper cover combination in the direction of the guide shaft, the conductive sheet being arranged above the guide shaft, a first conductive column and a second conductive column fixedly arranged on the top of the upper cover combination in the direction of the conductive sheet, and one end of the conductive sheet close to the second spring being connected with the first conductive column. The impact overload alarm device can continuously alarm for a long time, and is more likely to attract the attention of operators.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of transportation protection technology, in particular, to an impact overload alarm device. BACKGROUND

[0002] Valuable precision instruments and other goods usually need to be protected from external impact, and in the transportation of valuable precision instruments, although special transport vehicles are used, sometimes due to road conditions, the vehicle will inevitably bounce, causing the precision instruments on the vehicle to collide with the outside world and receive an impact. In order to monitor the impact received by the precision instruments during transportation, an impact overload alarm device is usually installed on the outside of the precision instrument packaging, which will alarm when the impact received by the precision instrument is greater than the range it can withstand.

[0003] A Chinese patent document (publication number: CN211893034U) discloses an automobile anti-collision protection device with alarm function, which separates the base installed with the first conductive sheet and the connecting block of the second conductive sheet by the elastic force of the spring, when the impact force received by the collision head connected with the connecting block is greater than the elastic force of the spring, the collision head pushes the connecting block to compress the spring and moves towards the first conductive sheet, when the second conductive sheet on the connecting block contacts the first conductive sheet, the internal battery and the alarm form a closed circuit, thereby alarming; but if the collision head receives an instantaneous impact force, the first conductive sheet and the second conductive sheet will separate immediately under the rebound force of the spring after contacting, thereby causing the alarm to alarm for a very short time, which is not easy to attract the attention of the operator. SUMMARY

[0004] The purpose of the present application is to provide an impact overload alarm device that can alarm continuously for a long time, thereby more easily attracting the attention of the operator.

[0005] The technical scheme adopted by the impact overload alarm device disclosed by the present application is:

[0006] The impact overload alarm device comprises a lower cover, a mass block and an upper cover assembly, the lower cover is located below the upper cover assembly and connected with the upper cover assembly, the lower end of the mass block is located in the lower cover and connected with the bottom of the lower cover through a first spring, a guide shaft is installed in the upper cover assembly in the horizontal direction, a second spring and a sleeve are sleeved on the guide shaft, the two ends of the second spring are respectively abutted against the inner wall of the upper cover assembly and the sleeve, the upper end of the mass block is located in the upper cover assembly and the top is provided with a limiting column, the height of the limiting column is less than the vertical distance between the mass block and the bottom of the lower cover, a conductive sheet is arranged in the upper cover assembly along the axis direction of the guide shaft, the conductive sheet is located above the guide shaft, the top of the upper cover assembly is fixedly provided with a first conductive column and a second conductive column along the axis direction of the guide shaft, one end of the conductive sheet close to the second spring is connected with the first conductive column, when the end face of the sleeve away from the second spring abuts against the limiting column, the conductive sheet is separated from the second conductive column, when the sleeve is located below the second conductive column, one end of the conductive sheet close to the second conductive column is in contact with the second conductive column under the support of the sleeve.

[0007] As a preferred solution, the end of the guide shaft close to the second conductive column is provided with a protrusion in the circumferential direction, and the sleeve is located between the second spring and the protrusion.

[0008] As a preferred solution, the sleeve is in the shape of a circular truncated cone with a hole in the middle part, and the cross-sectional area of the end of the sleeve close to the first spring is smaller than that of the end close to the protrusion.

[0009] As a preferred solution, a first through hole is formed in the side of the upper cover assembly close to the protrusion, the central axis of the first through hole is parallel to the central axis of the guide shaft and corresponds to the end face of the end with larger cross section of the sleeve.

[0010] As a preferred solution, the upper cover assembly comprises an upper cover, an upper gasket and a lower gasket located in the upper cover, the upper gasket and the lower gasket are both threadedly connected with the inner wall of the upper cover, the upper gasket is located above the guide shaft, the conductive sheet is located in the inner hole of the upper gasket, the lower gasket is located below the guide shaft, the two ends of the guide shaft are clamped between the upper gasket and the lower gasket, the inner hole of the lower gasket is a stepped hole, the side close to the lower cover of the stepped hole is a large hole, the end of the limiting column of the mass block is located in the large hole, and the first through hole is located on the upper cover and close to the side of the protrusion.

[0011] As a preferred solution, the upper cover assembly further comprises a transparent cover plate, the cover plate is in the shape of a step, a second through hole is formed in the side of the upper cover away from the lower cover, the cover plate is located above the upper gasket, the end with larger cross-sectional area of the cover plate is clamped between the top of the inner side of the upper gasket and the upper cover, and the end with smaller cross-sectional area is located in the second through hole.

[0012] As a preferred scheme, the third through hole and the fourth through hole are arranged on the cover plate, the first conductive column is arranged in the third through hole, and the second conductive column is arranged in the fourth through hole.

[0013] As a preferred scheme, the inner bottom of the lower cover is provided with a positioning column, the first spring is sleeved on the positioning column, a blind hole is arranged on the end face of the one end of the mass block close to the lower cover, the one end of the first spring away from the lower cover is located in the blind hole, and the two ends of the first spring are connected with the inner bottom of the lower cover and the top of the blind hole respectively.

[0014] As a preferred scheme, the one end of the conductive sheet below the second conductive column is provided with a bending part, and the bending part is bent towards the second conductive column.

[0015] As a preferred scheme, the lower cover is provided with a collision plate below, and the collision plate is detachably connected with the lower cover through a screw.

[0016] The impact overload alarm device has the advantages that when the impact overload alarm device is installed on the packaging of a precision instrument, the lower cover side faces the outside of the packaging, when the precision instrument is tilted, the lower cover stops moving after colliding with an external object, the mass block compresses the first spring under the action of inertia and continues to move towards the lower cover, when the moving distance of the mass block is greater than the height of the limiting column, the limiting column is removed from the blocking of the sleeve, the second spring compressed by the sleeve rebounds and pushes the sleeve to move towards the one end of the second conductive column along the guide shaft, when the sleeve moves below the second conductive column, the one end of the conductive sheet close to the second conductive column is in contact with the second conductive column above the same under the support of the sleeve, since the first conductive column and the second conductive column can be connected with the alarm device respectively, at this time, the alarm device is connected and starts to alarm, the sleeve cannot automatically return to the initial position under the blocking action of the second spring, so the alarm device continuously alarms, and therefore, the operator is more likely to pay attention. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 Fig. 1 is a schematic view of an impact overload alarm device.

[0018] Figure 2 Fig. 2 is an exploded schematic view of an impact overload alarm device.

[0019] Figure 3 Fig. 3 is an enlarged schematic view of part A in Fig. 1. Figure 2

[0020] Figure 4 Fig. 4 is a schematic view of a lower cover of an impact overload alarm device.

[0021] Figure 5 ​It is a mass block schematic diagram of the impact overload alarm device.

[0022] Figure 6 It is an upper cover schematic diagram of the impact overload alarm device.

[0023] Figure 7 It is a cover plate schematic diagram of the impact overload alarm device.

[0024] Figure 8 It is a sectional view of the impact overload alarm device when not subjected to an overload impact.

[0025] Figure 9 It is Figure 8 An enlarged schematic view of the B part.

[0026] Figure 10 It is Figure 8 An enlarged schematic view of the C part.

[0027] Figure 11 It is a sectional view of the impact overload alarm device after subjected to an overload impact.

[0028] Figure 12 It is Figure 11 An enlarged schematic view of the D part. DETAILED DESCRIPTION

[0029] The present application will be further described and explained with reference to the specific embodiments and the accompanying drawings:

[0030] Please refer to Figures 1 to 12 An impact overload alarm device, comprising a lower cover 10, a mass block 20 and an upper cover combination 30, the lower cover 10 is located below the upper cover combination 30, and the lower cover 10 is connected with the upper cover combination 30, the lower end of the mass block 20 is located in the lower cover 10, the mass block 20 is connected with the bottom of the lower cover 10 through a first spring 40, a guide shaft 50 is installed in the upper cover combination 30 along the horizontal direction, a second spring 60 and a sleeve 70 are sleeved on the guide shaft 50, the two ends of the second spring 60 are respectively abutted on the inner wall of the upper cover combination 30 and the sleeve 70, the upper end of the mass block 20 is located in the upper cover combination 30, the end of the upper end of the mass block 20 is provided with a limiting column 21, the height of the limiting column 21 is less than the vertical distance between the lower end of the mass block 20 and the bottom of the lower cover 10, a conductive sheet 80 is arranged in the upper cover combination 30 along the central axis direction of the guide shaft 50, the conductive sheet 80 is located above the guide shaft 50, a first conductive column 90 and a second conductive column 100 are fixedly arranged on the top of the upper cover combination 30 along the central axis direction of the guide shaft 50, and one end of the conductive sheet 80 close to the second spring 60 is connected with the first conductive column 90.

[0031] The sleeve 70 is pushed by hand to move along the guide shaft 50 to the side of the second spring 60, and the second spring 60 is compressed. When the sleeve 70 is located between the limiting column 21 and the second spring 60, the end face of the end of the sleeve 70 away from the second spring 60 abuts against the limiting column 21, at this time, the second spring 60 is in a compressed state, and the sleeve 70 cannot move back under the block of the limiting column 21. When the precision instrument is about to fall, the lower cover 10 stops moving after touching the external object, and the mass block 20 compresses the first spring 40 under the action of inertia and continues to move towards the lower cover 10. When the moving distance of the mass block 20 is greater than the height of the limiting column 21, the block of the limiting column 21 to the sleeve 70 is removed, the second spring 60 compressed by the sleeve 70 rebounds and pushes the sleeve 70 to move along the guide shaft 50 to the end close to the second conductive column 100. When the sleeve 70 moves below the second conductive column 100, the end of the conductive sheet 80 close to the second conductive column 100 contacts the second conductive column 100 above it under the support of the sleeve 70. Since the first conductive column 90 and the second conductive column 100 can be connected with the alarm device respectively, at this time, the alarm device is connected and starts to alarm. The sleeve 70 cannot automatically return to the initial position under the block of the second spring 60, so the alarm device continuously alarms, so it is easier to attract the attention of the operator.

[0032] The end of the guide shaft 50 close to the second conductive column 100 is provided with a protrusion 51 in the circumferential direction, and the sleeve 70 is located between the second spring 60 and the protrusion 51. The protrusion 51 can limit the displacement of the sleeve 70 moving on the guide shaft 50, and can ensure that the sleeve 70 moves directly below the second conductive column 100 under the rebounding force of the second spring 60.

[0033] The sleeve 70 is a circular truncated cone with a hole in the middle. The cross-sectional area of the end of the sleeve 70 close to the first spring 40 is smaller than that of the end close to the protrusion 51. Therefore, the height of the end of the sleeve 70 close to the protrusion 51 is increased, and the sleeve 70 better lifts the conductive sheet 80, and the conductive sheet 80 contacts the second conductive column 100 more closely.

[0034] A first through hole 311 is formed on the side of the upper cover assembly 30 close to the protrusion, and the central axis of the first through hole 311 is parallel to the central axis of the guide shaft 50 and corresponds to the end face of the end of the sleeve 70 with a larger cross section.

[0035] When the operator finds the alarm of the alarm device, a wire or other linear object can be inserted through the first through hole 311 to the end face of the sleeve 70. Since the sleeve 70 is a circular truncated cone, the outer periphery of the sleeve 70 is inclined along the direction of the guide shaft 50. When the sleeve 70 moves along the guide shaft 50 to the side of the second spring 60, the second spring 60 is compressed. After the limiting column 21 is pressed downward by the sleeve 70, the mass block 20 moves downward, and the first spring 40 is compressed. When the sleeve 70 slides past the limiting column 21, the mass block 20 moves upward under the elastic force of the first spring 40. The limiting column 21 again abuts against the end face of the end of the sleeve 70 with a larger cross-sectional area. The sleeve 70 is limited on the side away from the second conductive column 100. The end of the conductive sheet 80 close to the second conductive column 100 drops under the action of its own gravity and is separated from the second conductive column 100 again, so that the circuit of the alarm device is disconnected, and the alarm of the alarm device is released. Therefore, the impact overload alarm device can be repeatedly put into use.

[0036] The upper cover assembly 30 includes an upper cover 31, and an upper gasket 32 and a lower gasket 33 located in the upper cover 31. The upper gasket 32 and the lower gasket 33 are both threadedly connected with the inner wall of the upper cover 31. The upper gasket 32 is located above the guide shaft 50, and the conductive sheet 80 is located in the inner hole of the upper gasket 32. The lower gasket 33 is located below the guide shaft 50, and the two ends of the guide shaft 50 are clamped between the upper gasket 32 and the lower gasket 33. The inner hole of the lower gasket 33 is a stepped hole, the side close to the lower cover 10 is a large hole, one end of the limiting column 21 of the mass block 20 is located in the large hole, and the first through hole 311 is located on the upper cover 31 and close to the side of the protrusion 51. The guide shaft 50 is clamped between the upper gasket 32 and the lower gasket 33. By adjusting the positions of the upper gasket 32 and the lower gasket 33 in the upper cover 31, the distance between the sleeve 70 on the guide shaft 50 and the mass block 20 is adjusted, so that the movement of the limiting column 21 can be blocked.

[0037] The upper cover assembly 30 further includes a transparent cover plate 34. The cover plate 34 is stepped. The upper cover 31 is provided with a second through hole 312 away from the lower cover 10. The cover plate 34 is located above the upper gasket 32. The end of the cover plate 34 with a larger cross-sectional area is clamped between the upper gasket 32 and the top inside of the upper cover 31, and the end with a smaller cross-sectional area is located in the second through hole 312. The cover plate 34 is made of transparent material, which facilitates the operator to observe the position of the sleeve 70 and also facilitates the operator to observe when pushing the sleeve 70 back to the position abutting against the limiting column 21 with a wire. By setting the cover plate 34 as stepped, the installation and fixation of the cover plate 34 in the upper cover 31 are facilitated.

[0038] The third through hole 341 and the fourth through hole 342 are arranged on the cover plate 34, the first conductive column 90 is arranged in the third through hole 341, and the second conductive column 100 is arranged in the fourth through hole 342. The mounting and fixing of the first conductive column 90 and the second conductive column 100 are facilitated, and the connection of the first conductive column 90 and the second conductive column 100 with the alarm device is facilitated. The upper cover 31 is threadedly connected with the lower cover 10, and the disassembly of the upper cover 31 and the lower cover 10 is facilitated.

[0039] The inner bottom of the lower cover 10 is provided with a positioning column 11, the first spring 40 is sleeved on the positioning column 11, the blind hole 22 is arranged on the end face of one end of the mass block 20 close to the lower cover 10, the first spring 40 is located in the blind hole 22 away from the lower cover 10, and the two ends of the first spring 40 are connected with the inner bottom of the lower cover 10 and the top of the blind hole 22 respectively. Through the arrangement of the positioning column 11 and the blind hole 22, the deviation or inclination of the first spring 40 can be prevented.

[0040] The one end of the conductive sheet 80 below the second conductive column 100 is provided with a bending part 81, and the bending part 81 is bent towards the second conductive column 100. The conductive sheet 80 is in closer contact with the second conductive column 100 under the support of the sleeve 70.

[0041] The lower cover 10 is provided with a collision plate 110, and the collision plate 110 is detachably connected with the lower cover 10 through screws. The collision plate 110 can protect the lower cover 10, prolong the service life of the lower cover 10, and the collision plate 110 is easy to replace when damaged.

[0042] In the above scheme, the mass block 20 is arranged, the mass block 20 is connected with the lower cover 10 through the first spring 40, the limiting column 21 is arranged on the side of the mass block 20 close to the sleeve 70, the limiting column 21 is in abutment with the end face of the one end of the sleeve 70 away from the second spring 60, after collision with the outside world, the lower cover 10 stops moving after contacting the collision object, the mass block 20 compresses the first spring 40 due to inertia and continues to move, when the moving distance of the mass block 20 is greater than the height of the limiting column 21, the limiting column 21 is separated from the sleeve 70, the blocking of the limiting column 21 to the sleeve 70 is removed, the sleeve 70 moves below the second conductive column 100 under the rebounding force of the second spring 60, the one end of the conductive sheet 80 close to the second conductive column 100 moves upward under the support of the sleeve 70 and contacts the second conductive column 100, the first conductive column 90 and the second conductive column 100 are connected, the alarm device connected with the first conductive column 90 and the second conductive column 100 is connected and starts to alarm, the sleeve 70 cannot be automatically reset under the blocking of the second spring 60, so that the alarm device is always in the connected state, and the alarm device continuously alarms, so it is easier to attract the attention of the operator.

[0043] It should be pointed out finally that the above embodiments are only used to illustrate the technical solutions of the present application, and are not intended to limit the protection scope of the present application. Although the present application has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present application can be modified or equivalently replaced without departing from the essence and scope of the technical solutions of the present application.

Claims

1. A shock overload alarm device, characterized by, The application relates to a spring device, which comprises a lower cover, a mass block and an upper cover combination, the lower cover is located below the upper cover combination and is connected with the upper cover combination, the lower end of the mass block is located in the lower cover and is connected with the bottom of the lower cover through a first spring, a guide shaft is arranged in the upper cover combination in the horizontal direction, a second spring and a sleeve are sleeved on the guide shaft, the two ends of the second spring are respectively abutted against the inner wall of the upper cover combination and the sleeve, the upper end of the mass block is located in the upper cover combination and the top is provided with a limiting column, the height of the limiting column is smaller than the vertical distance between the mass block and the bottom of the lower cover, a conductive sheet is arranged in the upper cover combination along the axis direction of the guide shaft, the conductive sheet is located above the guide shaft, the top of the upper cover combination is fixedly provided with a first conductive column and a second conductive column along the axis direction of the guide shaft, one end of the conductive sheet close to the second spring is connected with the first conductive column, when the end face of the sleeve away from the second spring abuts against the limiting column, the conductive sheet is separated from the second conductive column, when the sleeve is located below the second conductive column, one end of the conductive sheet close to the second conductive column is in contact with the second conductive column under the support of the sleeve.

2. The shock overload warning device of claim 1, wherein The end of the guide shaft close to the second conductive column is provided with a protrusion in the circumferential direction, and the sleeve is located between the second spring and the protrusion.

3. The shock overload warning device of claim 2, wherein The sleeve is in the shape of a circular truncated cone with a hole in the middle part, the cross-sectional area of one end of the sleeve close to the second spring is smaller than that of the other end close to the protrusion.

4. The shock overload warning device of claim 3, wherein A first through hole is formed in the side of the upper cover combination close to the protrusion, the central axis of the first through hole is parallel to the central axis of the guide shaft and corresponds to the end face of the sleeve with a larger cross section.

5. The shock overload warning device of claim 4, wherein The upper cover combination comprises an upper cover, an upper gasket and a lower gasket in the upper cover, the upper gasket and the lower gasket are both threadedly connected with the inner wall of the upper cover, the upper gasket is located above the guide shaft, the conductive sheet is located in the inner hole of the upper gasket, the lower gasket is located below the guide shaft, the two ends of the guide shaft are clamped between the upper gasket and the lower gasket, the inner hole of the lower gasket is a stepped hole, the side of the stepped hole close to the lower cover is a large hole, one end of the mass block provided with the limiting column is located in the large hole, and the first through hole is located on the upper cover and close to the side of the protrusion.

6. The shock overload warning device of claim 5, wherein The upper cover combination further comprises a transparent cover plate, the cover plate is in the shape of a step, a second through hole is formed in the side of the upper cover away from the lower cover, the cover plate is located above the upper gasket, one end of the cover plate with a larger cross-sectional area is clamped between the top of the inner side of the upper gasket and the upper cover, and the other end with a smaller cross-sectional area is located in the second through hole.

7. The shock overload warning device of claim 6, wherein A third through hole and a fourth through hole are formed in the cover plate, the first conductive column is arranged in the third through hole, and the second conductive column is arranged in the fourth through hole, and the upper cover is threadedly connected with the lower cover.

8. The shock overload warning device of claim 1, wherein The inner side of the bottom of the lower cover is provided with a positioning column, the first spring is sleeved on the positioning column, a blind hole is formed in the end face of one end of the mass block close to the lower cover, the end of the first spring away from the lower cover is located in the blind hole, the two ends of the first spring are connected with the inner side of the bottom of the lower cover and the top of the blind hole respectively, and the first spring is used for lifting the mass block.

9. The shock overload warning device of claim 1, wherein The conductive sheet is provided with a bending part at one end below the second conductive column, and the bending part is bent towards the second conductive column.

10. The shock overload warning device of any one of claims 1-9, wherein, A collision plate is arranged below the lower cover, and the collision plate is detachably connected with the lower cover through screws.

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