Waterproof sheet type vibration sensor

Abstract

A waterproof chip type vibration sensor comprises a first electrode and a second electrode which are oppositely arranged at an interval, a shell which is in sealing fit with the peripheries of the first electrode and the second electrode, and a waterproof part which is arranged between the outer section of the first electrode or the second electrode and the shell, and the waterproof part comprises a blocking part arranged on the upper surface of the first electrode or the second electrode and a blocking matching part which is positioned on the shell and is hermetically matched on the surface of the blocking part. The vibration sensor has the beneficial effects that the sealing performance of the vibration sensor is improved by increasing the contact area between the first electrode or the second electrode and the peripheral shell, so that the waterproof effect of the vibration sensor is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of vibration sensors, in particular to a waterproof chip vibration sensor. Background Art

[0002] A vibration sensor is a sensor that converts the mechanical signal of vibration into an electrical signal, and the electrical signal is transmitted to a corresponding circuit for processing. Vibration sensors are widely used in toys, small household appliances, and various anti-theft and security products, and have become an indispensable type of electronic product on the market.

[0003] Chinese Patent with the application number CN202220649822.2 discloses a passive waterproof precision SMD micro-vibration sensor, which includes a housing. An installation groove is formed on the inner side of the housing. A first electrode located inside the housing is installed at the bottom of the upper end of the installation groove, and a second electrode located inside the housing is installed at the bottom of the lower end of the installation groove. A precision micro-vibration spring fixedly connected to the front side of the second electrode is arranged inside the installation groove. The first electrode is arranged lower than the second electrode. A cover plate covering the outside of the installation groove is hermetically connected to the front side of the housing. The first electrode and the second electrode are both hermetically arranged inside the housing, and the housing seals the inner installation groove through the cover plate.

[0004] According to the above-mentioned related technologies, the inventor believes that the vibration of the sensor during operation may cause loosening between the first electrode or the second electrode and its surrounding housing, resulting in a gap between the outer section and the housing, so that external water or water vapor enters the inside of the sensor through the gap, thereby affecting the normal operation of the sensor. Summary of the Utility Model

[0005] The utility model aims to solve the problems existing in the above-mentioned prior art, and provides a waterproof chip vibration sensor, which improves the connection relationship between the first electrode or the second electrode and its surrounding housing, thereby improving the sealing performance of the sensor, and finally realizing the waterproof performance of the sensor.

[0006] The technical solution adopted by the utility model to solve its technical problems: A waterproof chip vibration sensor includes a first electrode and a second electrode arranged at intervals relatively, and a housing hermetically fitted around the first electrode and the second electrode. A waterproof part is provided between the outer section of the first electrode or the second electrode and the housing. The waterproof part includes a blocking part formed on the upper surface of the first electrode or the second electrode, and a blocking matching part located on the housing and hermetically fitted on the surface of the blocking part.

[0007] By providing a blocking portion on the upper surface of the first electrode or the second electrode, and a blocking mating portion on the housing that is hermetically mated with the surface of the blocking portion, the contact area between the first electrode or the second electrode and the surrounding housing is increased, the friction force between the first electrode or the second electrode and the surrounding housing is increased, the connection relationship between the first electrode and the second electrode and the surrounding housing is improved, the connection between the first electrode and the second electrode and the surrounding housing is made more secure, thereby improving the sealing performance between the first electrode and the second electrode and the surrounding housing, reducing the situation where external water enters the sensor through the loose positions, and further improving the waterproof effect.

[0008] Preferably, the blocking portion is a long groove structure formed by concave in the upper surface of the first electrode or the second electrode; the blocking mating portion is a long strip structure that mates with the groove structure, and the blocking mating portion is inserted into the blocking portion and hermetically mated. This structure also acts as a baffle to reduce the entry of external water into the housing.

[0009] Preferably, the blocking portion is a long protrusion structure formed by convex in the upper surface of the first electrode or the second electrode; the blocking mating portion is a long strip groove that mates with the protrusion structure, and the blocking portion is inserted into the blocking mating portion and hermetically mated. This structure also acts as a baffle to reduce the entry of external water into the housing.

[0010] Preferably, the cross-section of the waterproof portion is rectangular. This structural design is simple and easy to implement.

[0011] Preferably, the blocking mating portion extends towards the side wall of the housing and penetrates both ends.

[0012] Preferably, in order to further enhance the waterproof effect, the housing is an integrally molded injection molded part on the first electrode and the second electrode.

[0013] Preferably, the outer segments of the first electrode and the second electrode are away from the center of the housing, the surface of the first electrode facing away from the center of the housing is the first exposed surface, the surface of the second electrode facing away from the center of the housing is the second exposed surface, both the first exposed surface and the second exposed surface are exposed on the outer surface of the housing, and both the first exposed surface and the second exposed surface are flush with the outer surface of the housing.

[0014] Preferably, the lower surfaces of the first electrode and the second electrode are electrically connected to the outside.

[0015] The beneficial effects of the present utility model are as follows: In the present utility model, a blocking portion is provided on the upper surface of the first electrode or the second electrode, and a blocking mating portion that is hermetically mated with the surface of the blocking portion is provided on the housing. On the one hand, the contact area between the first electrode or the second electrode and the surrounding housing is increased, the friction force between the first electrode or the second electrode and the surrounding housing is increased, the connection relationship between the first electrode or the second electrode and the surrounding housing is improved, so that the connection between the first electrode or the second electrode and the surrounding housing is more firm, thereby improving the waterproof ability. On the other hand, the waterproof portion formed between the first electrode or the second electrode and the surrounding housing also acts as a baffle, which can effectively block the external water outside the first electrode or the second electrode, reducing the situation of external water entering the housing, thereby improving the waterproof effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of Embodiment 1;

[0017] Figure 2 It is a schematic diagram of the structure inside the housing of Embodiment 1;

[0018] Figure 3 It is the front view of the inside of the housing of Embodiment 1;

[0019] Figure 4 For Figure 3 the sectional view of the A-A plane in;

[0020] Figure 5 It is a schematic diagram showing the structure of the blocking portion and the blocking mating portion in Embodiment 1;

[0021] Figure 6 It is a schematic diagram showing the structure of the blocking portion and the blocking mating portion in Embodiment 2.

[0022] Explanation of reference numerals: 1. Housing; 11. Installation groove; 2. First electrode; 21. First exposed surface; 22. Boss; 3. Second electrode; 31. Second exposed surface; 4. Inner core; 5. Waterproof portion; 51. Blocking portion; 52. Blocking mating portion; 8. Top cover. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] The following further describes the present utility model in conjunction with the attached Figures 1-6 drawings:

[0024] Embodiment 1

[0025] In conjunction with Figure 1 , Figure 2As shown in the figure, the utility model discloses a waterproof chip vibration sensor, which includes a housing 1 and a top cover 8 fixed on the housing 1. An installation groove 11 is formed on the housing 1, and a first electrode 2 and a second electrode 3 are respectively arranged at the bottom of the installation groove 11. An inner core 4 is installed on the first electrode 2. When the inner core 4 receives an external vibration signal, the inner core 4 connects the first electrode 2 and the second electrode 3, thereby realizing vibration sensing. The top cover 8 covers the opening of the installation groove 11, so that the space in the installation groove 11 forms a sealed cavity, reducing the entry of external moisture into the installation groove 11 and affecting the conduction of the inner core 4 to the second electrode 3.

[0026] Combined with Figure 3 、 Figure 4 As shown in the figure, both the first electrode 2 and the second electrode 3 are in the shape of a metal plate. The first electrode 2 is located at one end of the installation groove 11, and the second electrode 3 is located at the other end of the installation groove 11. Moreover, the lower surfaces of the first electrode 2 and the second electrode 3 are exposed on the lower surface of the housing 1, and the lower surfaces of the first electrode 2 and the second electrode 3 are electrically connected to other electronic components outside the housing 1.

[0027] The middle part of the first electrode 2 is stamped towards the inside of the housing to form a boss 22, and the inner core 4 is horizontally fixed and electrically connected to the boss 22, so that there is a relative interval between the second electrode 3 and the inner core 4 when at rest.

[0028] Combined with Figure 2 、 Figure 4 As shown in the figure, the outer sections of the first electrode 2 and the second electrode 3 are far from the center of the housing 1. The surface of the first electrode 2 facing away from the center of the housing 1 is the first exposed surface 21, and the surface of the second electrode 3 facing away from the center of the housing 1 is the second exposed surface 31. Both the first exposed surface 21 and the second exposed surface 31 are exposed on the outer surface of the housing 1, and both the first exposed surface 21 and the second exposed surface 31 are flush with the outer surface of the housing 1.

[0029] The connection structures between the first electrode 2 and the second electrode 3 and the housing 1 are the same. Taking the first electrode 2 as an example, it will be further described below.

[0030] Combined with Figure 4 、 Figure 5As shown in the figure, a waterproof portion 5 is provided between the outer section of the first electrode 2 and the housing 1. The waterproof portion 5 includes a blocking portion 51 provided on the upper surface of the first electrode 2, and a blocking and mating portion 52 located on the housing 1 and sealingly mating with the surface of the blocking portion 51. By providing the blocking portion 51 on the upper surface of the first electrode 2 and providing the blocking and mating portion 52 on the housing 1 that sealingly mates with the surface of the blocking portion 51, the contact area between the first electrode 2 and the surrounding housing 1 is increased, the friction force between the first electrode 2 and the surrounding housing 1 is increased, the connection relationship between the first electrode 2 and the surrounding housing 1 is improved, so that the connection between the first electrode 2 and the surrounding housing 1 is more firm, thereby improving the sealing performance between the first electrode 2 and the surrounding housing 1, further reducing the entry of external water into the housing 1 during the vibration of the sensor, and finally achieving an improvement in the waterproof effect of the sensor.

[0031] The blocking portion 51 is a long groove structure formed by concave-concaving the upper surface of the first electrode 2; the extending direction of the long groove structure is parallel to the direction of the first exposed surface 21 and penetrates through both ends. The blocking and mating portion 52 is in a long strip shape that mates with the groove structure, and the blocking and mating portion 52 is inserted into the blocking portion 51 and sealingly mates. Since the first exposed surface 21 is flush with the outer surface of the housing 1 and the first exposed surface 21 and the housing 1 are connected to each other, external water can enter the outer section of the first electrode 2 from the connected position. The extending direction of the blocking portion 51 is parallel to the direction of the first exposed surface 21, and the blocking and mating portion 52 is sealingly mated with the blocking portion 51, which also acts as a baffle, and can block external water outside the outer section, reducing the entry of external water into the housing 1; the fact that the blocking portion 51 penetrates through both ends can reduce the entry of external water into the housing 1 from both ends of the blocking portion 51.

[0032] The housing 1 is an integrally molded injection molded part injection molded on the first electrode 2 and the second electrode 3. The first electrode 2 and the second electrode 3 are horizontally placed in the mold and accurately positioned, and then the housing 1 is integrally injection molded on the first electrode 2 and the second electrode 3. In order to increase the connection strength and waterproof effect between the housing 1 and the first electrode 2 and the second electrode 3, during the injection molding of the housing 1, the plastic is filled on the blocking portions of the first electrode 2 and the second electrode 3.

[0033] Embodiment Two

[0034] Refer to the appendix Figure 6 As shown in the figure, the difference between this embodiment and Embodiment One is that the blocking portion 51 is a long convex structure formed by convex-convexifying the upper surface of the first electrode 2; the blocking and mating portion 52 is a long strip-shaped groove that mates with the convex structure, and the blocking portion 51 is inserted into the blocking and mating portion 52 and sealingly mates. This structure can achieve the effect of a baffle and reduce the situation of external water entering the housing 1.

[0035] The above are the preferred embodiments of the present utility model. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present utility model, several improvements and refinements can be made, and these improvements and refinements are also regarded as the protection scope of the present utility model.

Claims

1. A waterproof chip-type vibration sensor, comprising a first electrode (2) and a second electrode (3) arranged relatively spaced apart, and a housing (1) sealed around the first electrode (2) and the second electrode (3), wherein: A waterproof portion (5) is provided between the outer section of the first electrode (2) or the second electrode (3) and the shell (1), the waterproof portion (5) comprising a blocking portion (51) provided on the upper surface of the first electrode (2) or the second electrode (3) and a blocking matching portion (52) provided on the shell (1), the blocking portion (51) and the blocking matching portion (52) being sealed and matched.

2. A waterproof chip-type vibration sensor according to claim 1, characterized in that: The blocking portion (51) is a long slot body structure formed by an inward concave upper surface of the first electrode (2) or the second electrode (3); the blocking matching portion (52) is a long strip structure matched with the slot body structure, and the blocking matching portion (52) is inserted into the blocking portion (51) and sealed.

3. The waterproof chip-type vibration sensor according to claim 1, characterized in that: The blocking portion (51) is a long protruding structure formed by a protrusion on the upper surface of the first electrode (2) or the second electrode (3); the blocking matching portion (52) is a long strip-shaped groove body that matches the protruding structure; the blocking portion (51) is plugged into the blocking matching portion (52) and is sealed.

4. A waterproof chip-type shock sensor according to claim 1, 2 or 3, characterized in that: The cross section of the waterproof portion (5) is rectangular.

5. The waterproof chip-type vibration sensor according to claim 1, characterized in that: The blocking fitting portion (52) extends towards the side wall of the shell (1) and penetrates through both ends.

6. The waterproof chip-type vibration sensor according to claim 1, characterized in that: The housing (1) is an integrally molded part that is injection molded on the first electrode (2) and the second electrode (3).

7. The waterproof chip-type vibration sensor according to claim 1, characterized in that: The outer sections of the first electrode (2) and the second electrode (3) are away from the center of the shell (1); the surface of the first electrode (2) facing away from the center of the shell (1) is a first exposed surface (21); the surface of the second electrode (3) facing away from the center of the shell (1) is a second exposed surface (31); the first exposed surface (21) and the second exposed surface (31) are both exposed on the outer surface of the shell (1), and the first exposed surface (21) and the second exposed surface (31) are both flush with the outer surface of the shell (1).

8. The waterproof chip-type vibration sensor according to claim 1, characterized in that: The lower surfaces of the first electrode (2) and the second electrode (3) are electrically connected to the outside.

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