CN219810555U - Anticollision pressure detection device - Google Patents

Abstract

The utility model relates to the technical field of pressure detection devices, and provides an anti-collision pressure detection device with a pressure sensor not easy to be impacted. The anti-collision pressure detection device comprises a shell, a limiting structure positioned in the shell, a pressure sensor fixed in the shell and a sliding component in sliding connection with the shell, wherein the sliding component comprises a dowel bar, one end of the dowel bar is provided with an elastic sheet, and the dowel bar transmits pressure to the pressure sensor through the elastic sheet; the limiting structure is used for limiting one end of the dowel bar to move towards the direction close to the pressure sensor.

Description

Anticollision pressure detection device

Technical Field

The utility model relates to the technical field of pressure detection devices, and particularly provides an anti-collision pressure detection device.

Background

The pressure detection device in the existing electronic handwriting pen comprises a dowel bar, an elastic sheet and a pressure sensor, wherein the dowel bar receives and transmits external pressure to the elastic sheet, the elastic sheet transmits the pressure to the pressure sensor, the pressure sensor converts the received pressure into an electric signal and transmits the electric signal to a controller, and the controller converts the received electric signal into a graph displayed on a display, so that man-machine interaction is completed.

In the use of electronic handwriting pen, unexpected situations such as falling or striking can appear, if the dowel bar receives great impact force because unexpected situation, the dowel bar can transmit for pressure sensor along the great impact force of dowel bar's axis direction to make pressure sensor produce great meeting an emergency, and then make pressure sensor damage easily, make the reliability of electronic handwriting pen reduce.

Disclosure of Invention

The first aspect of the present utility model provides an anti-collision pressure detection device, which aims to solve the problem that a pressure sensor of the existing pressure detection device is easily damaged by impact.

In order to achieve the above purpose, the utility model adopts the following technical scheme: an anti-collision pressure detection device comprises a shell, a limiting structure positioned in the shell, a pressure sensor fixed in the shell and a sliding assembly in sliding connection with the shell, wherein the sliding assembly comprises a dowel bar, one end of the dowel bar is provided with an elastic sheet, and the dowel bar transmits pressure to the pressure sensor through the elastic sheet; the limiting structure is used for limiting one end of the dowel bar to move towards the direction close to the pressure sensor.

As a possible implementation manner, the limiting structure comprises a limiting block located in the housing, and the limiting block is used for limiting the movement of one end of the dowel bar to a direction approaching the pressure sensor.

As a possible implementation manner, the limiting block is located at one end of the dowel, and the limiting block extends along the axial direction of the dowel.

As a possible implementation manner, the distance from the end, close to the pressure sensor, of the limiting block to the pressure sensor is greater than the distance from the end, close to the pressure sensor, of the elastic piece to the pressure sensor.

As a possible implementation manner, the sliding assembly further comprises a supporting block arranged at one end of the dowel, the limiting block and the elastic sheet are located on the supporting block, and the limiting block is used for limiting the movement of the elastic sheet along the radial direction and the circumferential direction of the dowel.

As a possible implementation manner, the elastic sheet comprises a first elastic arm, a second elastic arm, a supporting plate and a touch plate, wherein the touch plate is connected with the second elastic arm through the first elastic arm and the second elastic arm which are arranged at intervals, the supporting plate is used for being supported on the supporting block, the touch plate is used for being in contact with the pressure sensor, and the limiting block is located between the first elastic arm and the second elastic arm.

As a possible implementation manner, the elastic sheet further comprises a pre-pressing plate, the pre-pressing plate is located between the first elastic arm and the second elastic arm, and the limiting block is provided with a pre-pressing clamping groove, and the pre-pressing clamping groove is used for being clamped with the pre-pressing plate and applying pressure to the pre-pressing plate towards the supporting block.

As a possible embodiment, the spring plate further comprises a protruding structure on the touch plate, the protruding structure being for contacting the pressure sensor.

As a possible embodiment, the pressure sensor further comprises an elastic member, wherein the elastic member is located in the housing, and the elastic member is used for applying elastic force to the elastic sheet towards the pressure sensor and keeping the elastic sheet in contact with the pressure sensor.

As a possible implementation mode, a through hole and an accommodating cavity which are communicated with each other are sequentially formed in the shell along the axial direction of the dowel bar, the dowel bar is in sliding fit with the through hole, the elastic sheet is positioned in the accommodating cavity, an avoidance groove is formed in the accommodating cavity and in a concave mode in the side wall opposite to the through hole, the pressure sensor comprises a bending moment beam and a pressure sensitive element, the bending moment beam is fixed on the side wall and spans across the opening of the avoidance groove, and the pressure sensitive element is arranged on the bending moment beam and is positioned in the avoidance groove.

The utility model has the beneficial effects that: according to the anti-collision pressure detection device provided by the utility model, the limiting structure is arranged in the shell, and the limiting structure can limit the dowel bar to move towards the direction close to the pressure sensor. When the dowel bar is subjected to larger impact due to unexpected situations such as falling or collision, the limiting structure can limit the dowel bar to move towards the direction close to the pressure sensor, so that impact force transmitted by the dowel bar to the pressure sensor is reduced, and the pressure sensor is not easy to damage.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments or the description of the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic perspective view of an anti-collision pressure detecting device according to an embodiment of the present utility model;

fig. 2 is a schematic front view of an anti-collision pressure detecting device according to a first embodiment of the present utility model;

fig. 3 is a schematic perspective view of a sliding assembly according to a first embodiment of the present utility model;

fig. 4 is a schematic perspective view of a housing according to a first embodiment of the present utility model;

fig. 5 is a schematic front view of an anti-collision pressure detecting device according to a second embodiment of the present utility model;

fig. 6 is a schematic perspective view of a sliding assembly according to a second embodiment of the present utility model.

Wherein, each reference sign in the figure: 100. a housing; 101. a via hole; 102. a receiving chamber; 103. an avoidance groove; 200. a dowel bar; 300. a pressure sensor; 301. a bending moment beam; 302. a pressure sensitive unit; 400. a limiting block; 401. a pre-pressing clamping groove; 500. a spring plate; 501. a support plate; 502. a touch panel; 5021. a bump structure; 5031. a first elastic arm; 5032. a second elastic arm; 504. a pre-pressing plate; 600. a support block; 700. an elastic member; 900. and a communication interface.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present utility model and should not be construed as limiting the utility model.

In the description of the present utility model, it should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present utility model and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

Referring to fig. 1 to 6, an anti-collision pressure detecting device provided by an embodiment of the present utility model includes a housing 100, a limiting structure located in the housing 100, a pressure sensor 300 fixed in the housing 100, and a sliding assembly slidably connected with the housing 100. The sliding component comprises a dowel bar 200, one end of the dowel bar 200 is provided with a spring piece 500, and the dowel bar 200 transmits pressure to the pressure sensor 300 through the spring piece 500; the limiting structure is used to limit the movement of one end of the transfer lever 200 in a direction approaching the pressure sensor 300.

When the force transmission rod 200 is impacted by the outside to move in a direction approaching the pressure sensor 300, since one end of the elastic sheet 500 is connected with the force transmission rod 200, the other end of the elastic sheet 500 contacts with the pressure sensor 300, and as the force transmission rod 200 moves, the elastic sheet 500 is compressed, and the force transmission rod 200 transmits impact energy to the pressure sensor 300 through the elastic sheet 500. In the process that the dowel bar 200 moves towards the pressure sensor 300, the limiting structure gradually approaches to one end of the dowel bar 200 or the structure on the bar body until the limiting structure interferes with one end of the dowel bar 200 or the structure on the bar body, so that the dowel bar 200 is prevented from continuing to move, the dowel bar 200 is prevented from continuing to compress the elastic sheet 500, and then the dowel bar 200 is prevented from continuing to transmit impact energy to the pressure sensor 300 through the elastic sheet 500, and the effect of protecting the pressure sensor 300 is achieved.

The pressure sensor 300 may include a displacement pressure sensor, a resistive pressure sensor, a semiconductor pressure sensor, or the like, which is capable of converting pressure into an electrical signal, and the elastic sheet 500 may be made of stainless steel, spring steel, copper alloy, or the like.

For example, the limit structure may be a structure disposed at one end of the dowel bar 200, such as a limit block 400, a limit bar, or a limit protrusion extending along an axial direction of the dowel bar 200, and when a distance between one end of the dowel bar 200 and the pressure sensor 300 reaches a certain value, the limit block 400, the limit bar, or the limit protrusion contacts the housing 100, so that the dowel bar 200 cannot move further in a direction approaching the pressure sensor 300, thereby preventing the dowel bar 200 from continuing to transmit impact to the pressure sensor 300.

The limit structure may also be a structure disposed on the housing 100, for example, a limit structure such as a limit block 400, a limit rod or a limit protrusion is disposed on the housing 100, and when the distance between one end of the dowel bar 200 and the pressure sensor 300 reaches a certain value, the limit structure disposed on the housing 100 contacts with one end of the dowel bar 200, so that the dowel bar 200 cannot move continuously in a direction approaching to the pressure sensor 300, thereby preventing the dowel bar 200 from continuously transmitting impact to the pressure sensor 300.

The limit structure may also be disposed on the housing 100 and the dowel bar 200, for example, a limit block 400 is disposed on a housing of the housing 100 in a radial direction of the dowel bar 200, a step is disposed on a shaft of the dowel bar 200, and when a distance between one end of the dowel bar 200 and the pressure sensor 300 reaches a certain value, the limit block 400 contacts with the step to generate interference, so that the dowel bar 200 cannot move continuously in a direction approaching the pressure sensor 300, thereby preventing the dowel bar 200 from continuously transmitting impact to the pressure sensor 300. Similarly, the limiting structure may also be disposed on one end of the dowel bar 200 and on a housing of the housing 100 in an axial direction of the dowel bar 200, for example, a first limiting block is disposed at one end of the dowel bar 200, and a second limiting block is disposed on the housing of the housing 100, where when a distance between one end of the dowel bar 200 and the pressure sensor 300 reaches a certain value, the first limiting block and the second limiting block contact to generate interference, so that the dowel bar 200 cannot move continuously in a direction approaching the pressure sensor 300, thereby preventing the dowel bar 200 from continuously transmitting impact to the pressure sensor 300.

The limiting structure may also be a resilient structure, such as a rubber block, a spring, etc., which can limit the force transmission rod 200 and also buffer the force transmission rod 200 from impacting the housing 100. The limiting structure is a rubber block arranged at one end of the dowel bar 200, when the rubber block is in contact with the shell 100 to generate interference, the dowel bar 200 cannot move continuously in a direction close to the pressure sensor 300, and when the dowel bar 200 is prevented from continuously transmitting impact to the pressure sensor 300, the rubber block can absorb part of impact of the dowel bar 200 to the shell 100, so that impact of the dowel bar 200 to the shell 100 is reduced, harmful impact of the dowel bar 200 to the shell 100 is reduced, and the service life of the shell 100 is prolonged.

As a possible implementation, please refer to fig. 1, 2 and 3. The stopper 400 is located at one end of the dowel bar 200, and the stopper 400 extends along the axial direction of the dowel bar 200. So designed, the stopper 400 can be used to adjust the compression amount of the elastic sheet 500.

For example, when the distance between the end of the stopper 400 near the pressure sensor 300 is greater than the distance between the end of the elastic piece 500 near the pressure sensor 300 and the pressure sensor 300, the force-transmitting rod 200 moves toward the pressure sensor 300 under the action of the external force, and the elastic piece 500 can be preferentially contacted with the pressure sensor 300 until the stopper 400 contacts with the housing 100 to generate interference, and the force-transmitting rod 200 cannot continue to move toward the direction near the pressure sensor 300, at this time, the elastic piece 500 is partially compressed. When the distance between the end of the stopper 400 near the pressure sensor 300 is less than or equal to the distance between the end of the elastic piece 500 near the pressure sensor 300 and the pressure sensor 300, and the stopper 400 contacts the casing 100 to interfere with the pressure sensor 300, the elastic piece 500 cannot contact the pressure sensor 300, and the compression amount of the elastic piece 500 is still zero. It can be seen that, by adjusting the dimensional relationship between the limiting block 400 and the elastic sheet 500, the compression amount of the elastic sheet 500 can be adjusted, so as to be suitable for different working scenarios.

As a possible implementation, please refer to fig. 1, 2 and 3. The distance from the end of the limiting block 400 close to the pressure sensor 300 is larger than the distance from the end of the elastic sheet 500 close to the pressure sensor 300. This design allows the spring plate 500 to be used to adjust the maximum force that the dowel bar 200 can transfer to the pressure sensor 300.

The maximum force value may be the maximum force that the dowel bar 200 can transmit to the sensor 300 after the spring piece 500 contacts the pressure sensor 300 until the dowel bar 200 is blocked from stopping movement by the stopper 400. The distance from the end of the limiting block 400 close to the pressure sensor 300 is greater than the distance from the end of the elastic sheet 500 close to the pressure sensor 300, so that after the elastic sheet 500 contacts the pressure sensor 300 and generates a certain compression amount, the limiting block 400 contacts the shell 100, and the force transmission rod 200 stops moving. Therefore, the elastic parameters of the elastic sheet 500 can be adjusted by adjusting the shape, the material and the like of the elastic sheet 500, so that the maximum force value transmitted by the dowel bar 200 to the pressure sensor 300 is adjusted. Illustratively, when the dowel bar 200 is used to contact a display screen, the soft and hard feel of writing can be adjusted by adjusting the elastic parameters of the dome 500.

As a possible implementation, please refer to fig. 1, 2 and 3. The sliding assembly further includes a support block 600 disposed at one end of the dowel 200, and the stopper 400 and the elastic sheet 500 are disposed on the support block 600, and the stopper 400 is used to limit the movement of the elastic sheet 500 along the radial direction and the circumferential direction of the dowel 200. By the design, the elastic sheet 500 can be well supported and limited at the same time.

For example, two limiting blocks 400 may be disposed on the supporting block 600 at intervals and symmetrically, a limiting gap is formed between the two limiting blocks 400, one end of the elastic sheet 500, which contacts the supporting block 600, is located in the limiting gap and contacts the two limiting blocks 400, a positioning groove is further formed on the limiting block 400, at least part of the elastic sheet 500 stretches into the positioning groove, the limiting gap and the positioning groove cooperate to limit the elastic sheet 500 to move along the radial direction of the dowel 200, and the positioning groove can limit the elastic sheet 500 to rotate around the axis of the dowel 200, i.e. can limit the elastic sheet 500 to move along the circumferential direction of the dowel 200.

As another possible implementation of limiting the spring 500, please refer to fig. 1, 2 and 3. The spring plate 500 may include a first elastic arm 5031, a second elastic arm 5032, a support plate 501 and a touch plate 502, where the touch plate 502 is connected to the support plate 501 through the first elastic arm 5031 and the second elastic arm 5032 that are arranged at intervals, the support plate 501 is supported on the support block 600, the touch plate 502 is used to contact with the pressure sensor 300, and the stopper 400 is located between the first elastic arm 5031 and the second elastic arm 5032. The spring plate 500 has a simple structure and can be stably supported, and the first elastic arm 5031 and the second elastic arm 5032 can be formed by bending a U-shaped elastic arm, an S-shaped elastic arm or a Z-shaped elastic arm.

As a possible implementation, please refer to fig. 5 and 6. The elastic sheet 500 further comprises a pre-pressing plate 504, the pre-pressing plate is located between the first elastic arm 5031 and the second elastic arm 5032, a pre-pressing clamping groove 401 is formed in the limiting block 400, and the pre-pressing clamping groove 401 is used for clamping the pre-pressing plate 504 and applying pressure to the pre-pressing plate 504 towards the supporting block 600; by the design, the displacement of the dowel bar 200 can be reduced, and the use experience of a user is improved. The pre-pressing plate 504 may be connected between the first elastic arm 5031 and the second elastic arm 5032, may be connected to the first elastic arm 5031 or the second elastic arm 5032, may be connected between the first elastic arm 5031, the second elastic arm 5032 and the touch panel 502, and may be connected between the touch panel 502 and the first elastic arm 5031 or between the touch panel 502 and the second elastic arm 5032.

After the pre-pressing plate 504 is clamped with the pre-pressing clamping groove 401, the elastic sheet 500 is in a pre-pressing state, the elastic sheet 500 can generate pre-stress acting on the pre-pressing clamping groove 401, and the pre-pressing clamping groove 401 can generate a reaction force acting on the pre-pressing plate 504 at the same time, namely, the elastic sheet 500 can generate a certain deformation after being clamped with the pre-pressing clamping groove 401. When the force transmission rod 200 transmits pressure to the elastic sheet 500, the force transmission rod 200 can move towards the direction close to the pressure sensor 300 only when the pressure transmitted by the force transmission rod 200 needs to be larger than the prestress, and the elastic sheet 500 can deform. In this way, the motion of the dowel bar 200 can be prevented when the dowel bar 200 is subjected to small pressure, when the dowel bar 200 is used for contacting with a screen, the dowel bar 200 can be supported by the elastic sheet 500, the dowel bar 200 is prevented from moving towards the direction close to the pressure sensor 300 when the dowel bar is subjected to small pressure, and the interaction experience of users can be improved.

As a possible implementation, please refer to fig. 3 and 5. The dome 500 may further include a bump structure 5021 on the touch plate 502, the bump structure 5021 being configured to contact the pressure sensor 300. By such a design, the pressure receiving area of the pressure sensor 300 can be reduced, so that the pressure sensor 300 can more sensitively detect the pressure transmitted by the dowel 200. Such a design can reduce the threshold at which the pressure sensor 300 generates an electrical signal.

Compared with the surface contact between the touch plate 502 and the pressure sensor 300, the contact area between the bump structure 5021 and the pressure sensor 300 is smaller, and under the condition that the dowel bar 200 transmits the force with the same magnitude, the pressure sensor 300 can be subjected to larger pressure, so that an electric signal is generated, and the threshold value of the electric signal generated by the pressure sensor 300 is reduced. When the pressure transmitted by the dowel bar 200 is small, the pressure transmitted by the dowel bar 200 can be detected, so that the anti-collision pressure detection device can detect the pressure more sensitively and generate an electric signal.

As a possible embodiment, referring to fig. 1, 2, 3, 5 and 6, the anti-collision pressure detecting device further includes an elastic member 700, where the elastic member 700 is located in the housing 100, and the elastic member 700 is configured to apply an elastic force to the elastic member 500 toward the pressure sensor 300 and keep the elastic member 500 in contact with the pressure sensor 300. The design can prevent the dowel bar 200 from moving away from the pressure sensor 300 when not being stressed, so that a gap is generated between the elastic sheet 500 and the pressure sensor 300.

The elastic member 700 may be a spring or a rubber block, etc., and the spring may be sleeved on the dowel 200, one end of the spring is connected with the dowel 200, and the other end of the spring is connected with or contacted with the housing 100; a rubber block may be provided between the support block 600 and the housing 100, the rubber block being located on a side of the support block 600 facing away from the pressure sensor 300.

As a possible example, when the dowel bar 200 is used for contacting with the screen, the elastic member 700 can enable the dowel bar 200 not to move away from the pressure sensor 300 after being separated from the screen, so that the shrapnel 500 is kept in close contact with the pressure sensor 300, when the dowel bar 200 is contacted with the screen again, the dowel bar 200 does not need to move towards the direction close to the pressure sensor 300 and then transmit pressure to the pressure sensor 300, the dowel bar 200 can directly transmit pressure to the pressure sensor 300, the reaction time of the anti-collision pressure detection device can be shortened, the anti-collision pressure detection device is more sensitive to react, and the use experience of a user is improved.

As a possible implementation, please refer to fig. 4. The shell 100 is internally provided with a through hole 101 and a containing cavity 102 which are communicated with each other in sequence along the axial direction of the dowel bar, the dowel bar 200 is in sliding fit with the through hole 101, the elastic sheet 500 is positioned in the containing cavity 102, the side wall of the containing cavity 102 opposite to the through hole 101 is concavely formed with an avoidance groove 103, the pressure sensor 300 comprises a bending moment beam 301 and a pressure sensitive element 302, the bending moment beam 301 is fixed on the side wall and spans the opening of the avoidance groove 103, and the pressure sensitive element 302 is arranged on the bending moment beam 301 and positioned in the avoidance groove 103. By the design, the shell 100 is simple and compact in structure, and the size of the anti-collision pressure detection device is reduced.

The elastic sheet 500 is used for contacting the bending moment beam 301 and applying pressure to the bending moment beam 301, the bending moment beam 301 deforms under the action of the pressure, the pressure sensitive element 302 detects the deformation of the bending moment beam 301, and the deformation of the bending moment beam 301 is converted into an electrical signal and transmitted to the outside through the communication interface 900.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the utility model.

Claims (10)

1. An anticollision pressure detecting device, its characterized in that: the pressure sensor comprises a shell, a limiting structure positioned in the shell, a pressure sensor fixed in the shell and a sliding component in sliding connection with the shell, wherein the sliding component comprises a dowel bar, one end of the dowel bar is provided with an elastic sheet, and the dowel bar transmits pressure to the pressure sensor through the elastic sheet; the limiting structure is used for limiting one end of the dowel bar to move towards the direction close to the pressure sensor.

2. The collision avoidance pressure detection device of claim 1 wherein: the limiting structure comprises a limiting block located in the shell, and the limiting block is used for limiting one end of the dowel bar to move towards the direction close to the pressure sensor.

3. The collision avoidance pressure detection device of claim 2 wherein: the limiting block is located at one end of the dowel bar and extends along the axial direction of the dowel bar.

4. A collision avoidance pressure detection device according to claim 3, wherein: the distance from one end of the limiting block, which is close to the pressure sensor, to the pressure sensor is greater than the distance from one end of the elastic sheet, which is close to the pressure sensor, to the pressure sensor.

5. A collision avoidance pressure detection device according to claim 3, wherein: the sliding assembly further comprises a supporting block arranged at one end of the dowel bar, the limiting block and the elastic sheet are located on the supporting block, and the limiting block is used for limiting the elastic sheet to move along the radial direction and the circumferential direction of the dowel bar.

6. The collision avoidance pressure detection device of claim 5 wherein: the elastic piece comprises a first elastic arm, a second elastic arm, a supporting plate and a touch plate, wherein the touch plate is connected with the second elastic arm through the first elastic arm and the second elastic arm which are arranged at intervals, the supporting plate is used for being supported on the supporting block, the touch plate is used for being in contact with the pressure sensor, and the limiting block is located between the first elastic arm and the second elastic arm.

7. The collision avoidance pressure detection device of claim 6 wherein: the shell fragment still includes the pre-compaction board, the pre-compaction board is located between first elastic arm with the second elastic arm, be equipped with the pre-compaction draw-in groove on the stopper, the pre-compaction draw-in groove be used for with pre-compaction board joint and right the pre-compaction board applys towards the pressure of supporting shoe.

8. The collision avoidance pressure detection device of claim 6 wherein: the spring plate further comprises a protruding structure located on the touch plate, and the protruding structure is used for being in contact with the pressure sensor.

9. The collision avoidance pressure detection device of claim 1 wherein: the elastic piece is positioned in the shell and is used for applying elastic force to the elastic piece towards the pressure sensor and enabling the elastic piece to keep contact with the pressure sensor.

10. The collision avoidance pressure detection device according to any one of claims 1 to 9, wherein: the pressure sensor comprises a bending moment beam and a pressure sensitive element, the bending moment beam is fixed on the side wall and spans the opening of the avoidance groove, and the pressure sensitive element is arranged on the bending moment beam and is positioned in the avoidance groove.