A seismic sensor

Abstract

The present invention relates to a seismic sensor, comprising a sensor body and a shock absorbing mechanism, wherein the shock absorbing mechanism comprises a front-to-back direction shock absorbing unit, the front-to-back direction shock absorbing unit comprises a front side moving member, the front-to-back direction shock absorbing unit also comprises a rear side moving member, the front end of the mechanism frame comprises a front side baffle plate for pushing the front side moving member backward, the rear end of the mechanism frame comprises a rear side baffle plate for pushing the rear side moving member forward, a front side spring is arranged between the front side moving member and the sensor body, a first gear with a rotation axis extending in the left-right direction is rotatably mounted on the rear side moving member, a first rack gear meshing with the lower end of the first gear gear is arranged at the upper end of the rear side moving member along the front-to-back direction for guiding movement, a rear side spring is arranged between the first rack gear and the rear end of the sensor body, and a second rack gear meshing with the upper end of the first gear gear is arranged on the front side moving member. The present invention reduces the shaking of the sensor when the mobile device starts or stops.

Description

Technical Field

[0001] The present invention relates to the field of sensor detection, and in particular to an anti-vibration sensor capable of reducing the influence of vibration. Background Art

[0002] A sensor is a detection device that can sense the information being measured and convert the sensed information into electrical signals or other required signal outputs according to certain rules to meet the needs of information transmission, processing, storage, display, and recording.

[0003] There are many kinds of sensors, such as those for detecting distance and taking images. When using them, they often need to be installed on a movable device, such as a car or a cross slide. When the sensor is installed on a mobile device to realize its detection function, in order to avoid the vibration of the mobile device and affect the detection of the sensor, it is usually necessary to set an anti-vibration structure on the sensor.

[0004] The usual anti-vibration structure is to set a shock-absorbing spring in the direction where the sensor may vibrate. Although the shock-absorbing spring can reduce the transmission of vibration to the sensor to a certain extent, there is an important problem with the existing shock-absorbing structure: when the mobile device just starts or stops, due to inertia, the spring on one side of the sensor is stretched and the spring on the other side of the sensor is compressed, the sensor will shake and affect the normal detection of the sensor. Summary of the invention

[0005] The object of the present invention is to provide a shock-resistant sensor to reduce the shaking of the sensor when a mobile device starts or stops.

[0006] In order to solve the above technical problems, a technical solution of a seismic sensor in the present invention is as follows:

[0007] A seismic sensor comprises a sensor body and a shock absorbing mechanism arranged between the sensor body and a mobile device, the shock absorbing mechanism comprises a mechanism frame, a front-to-back direction shock absorbing unit is arranged on the mechanism frame, the front-to-back direction shock absorbing unit comprises a front moving member which is assembled at the front end of the mechanism frame for guiding movement along the front-to-back direction, the front-to-back direction shock absorbing unit also comprises a rear moving member which is assembled at the rear end of the mechanism frame for guiding movement along the front-to-back direction, the front end of the mechanism frame has a front baffle plate for pushing the front moving member backward, the rear end of the mechanism frame has a rear baffle plate for pushing the rear moving member forward, a front spring is arranged between the front moving member and the sensor body, a first gear which is rotatably assembled on the rear moving member with a rotation axis extending in the left-right direction, a first rack which is meshed with the lower end of the first gear for transmission is arranged on the upper end of the rear moving member for guiding movement along the front-to-back direction, a rear spring is arranged between the first rack and the rear end of the sensor body, and a second rack which is meshed with the upper end of the first gear for transmission is arranged on the front moving member.

[0008] The beneficial effects of the present invention are as follows: when in use, the mechanism frame of the seismic sensor is installed on a movable device, and when the mobile device starts to move backward, the front baffle plate moves the front moving part backward with it, and due to inertia, the rear moving part remains stationary, and the rear baffle plate moves backward relative to the rear moving part, and the front moving part moves forward to squeeze the front spring, and at the same time, the front moving part drives the first gear to rotate through the second rack, and the first gear moves the rear moving part forward with it, and the rear moving part squeezes the rear spring, that is to say, the front spring and the rear spring are squeezed at the same time, and the sensor body can quickly enter a stable state, so that the sensor body can be kept from shaking due to the starting of the mobile device as much as possible.

[0009] The friction force between the rear moving member and the mechanism frame is greater than the sum of the friction force between the first rack and the rear moving member and the force of the rear spring on the rear moving member.

[0010] The first rack includes a rack body which is matched with the rear moving member for guiding movement and a first vertical plate which is arranged vertically with the rack body. The rear spring is arranged between the first vertical plate and the sensor body.

[0011] The front moving part comprises a second vertical plate arranged in parallel with the first vertical plate and a second horizontal plate fixed to the upper end of the second vertical plate, a second rack is fixed to the bottom of the second horizontal plate, and the second vertical plate is matched with the mechanism frame for guiding movement.

[0012] The rear moving part includes a first horizontal plate and a third vertical plate arranged perpendicular to the first horizontal plate. The first horizontal plate and the third vertical plate form a T-shaped structure. The third vertical plate is in guiding motion cooperation with the rear end of the mechanism frame, and the rack body is in guiding motion cooperation with the first horizontal plate.

[0013] The mechanism frame includes a first U-shaped bracket, the first U-shaped bracket includes a front end side wall and a rear end side wall arranged in parallel with the front end side wall, the first U-shaped bracket also includes a first bottom wall connected between the front end side wall and the rear end side wall, two front guide rods arranged at intervals on the left and right are fixed to the front end side wall, the second vertical plate is guided and moved in cooperation with the front guide rods, and the front end side wall constitutes the front baffle plate; two rear guide rods arranged at intervals on the left and right are fixed to the rear end side wall, the third vertical plate is guided and moved in cooperation with the rear guide rods, and the rear end side wall constitutes the rear baffle plate.

[0014] A sensor support is fixed on the first bottom wall, and the sensor support is guided and moved in cooperation with the sensor body in the front-rear direction.

[0015] The sensor frame includes a second U-shaped bracket arranged perpendicularly to the first U-shaped bracket, the second U-shaped bracket includes a left side wall, a right side wall arranged parallel to the left side wall, and a second bottom wall connected between the left side wall and the right side wall, and a left-right direction shock absorbing unit is arranged between the second U-shaped bracket and the sensor body, and the structure of the left-right direction shock absorbing unit is the same as the structure of the front-rear direction shock absorbing unit.

[0016] A first cross slide is arranged between the sensor body and the sensor support, and the first cross slide can slide in the front-rear direction and the left-right direction.

[0017] The spring of the front-rear direction damping unit is connected to the sensor body via a first slide rail that can slide in the left-right direction; the spring of the left-right direction damping unit is connected to the sensor body via a second slide rail that can slide in the front-rear direction. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] By reading the following detailed description with reference to the accompanying drawings, the above and other objects, features and advantages of the exemplary embodiments of the present disclosure will become readily understood. In the accompanying drawings, several embodiments of the present disclosure are shown in an exemplary and non-limiting manner, and the same or corresponding reference numerals represent the same or corresponding parts, wherein:

[0019] Figure 1 is a schematic structural diagram of embodiment 1 of the seismic sensor of the present invention;

[0020] Figure 2 yes Figure 1 Schematic diagram of the movement of the front moving part when the middle frame moves backward;

[0021] Figure 3 yes Figure 1 Schematic diagram of the movement of the rear moving part when the middle frame moves backward;

[0022] Figure 4 yes Figure 2 Schematic diagram of the movement of the front moving part and the rear moving part when the middle frame stops moving;

[0023] Figure 5 is a top view of the first U-shaped bracket in Example 1;

[0024] Figure 6 is a schematic structural diagram of embodiment 2 of the seismic sensor of the present invention;

[0025] Figure 7 yes Figure 6 A top view of the first U-shaped bracket and the second U-shaped bracket;

[0026] Explanation of the accompanying drawings: 1. front end side wall; 2. second vertical plate; 3. front moving part; 4. second horizontal plate; 5. front spring; 6. front guide rod; 7. sensor support; 8. sensor body; 9. rack body; 10. first vertical plate; 11. rear spring; 12. rear guide rod; 13. rear end side wall; 14. third vertical plate; 15. rear moving part; 16. first horizontal plate; 17. second rack; 18. first gear; 19. first bottom wall; 20. first U-shaped bracket; 21. first cross slide; 22. first slide rail; 23. second slide rail; 24. spring of left and right shock-absorbing units; 25. second U-shaped bracket; 26. left end side wall; 27. left guide rod; 28. second bottom wall; 29. ​​right guide rod; 30. right end side wall. DETAILED DESCRIPTION

[0027] In order to facilitate the understanding of the present invention, the present invention is described in more detail below in conjunction with the accompanying drawings and specific embodiments. Preferred embodiments of the present invention are provided in the accompanying drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described in this specification. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present invention more thorough and comprehensive.

[0028] It should be noted that, unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0029] Embodiment 1 of the anti-seismic sensor of the present invention is as follows Figures 1 to 5 As shown: it includes a sensor body 8 and a shock absorbing mechanism arranged between the sensor body and the mobile device. The sensor body refers to the part with a detection unit. For example, for a laser displacement sensor, a laser transmitting and receiving module is installed on the sensor body.

[0030] The shock absorbing mechanism includes a mechanism frame, on which a shock absorbing unit in the front and rear directions is arranged. In this embodiment, the mechanism frame includes a first U-shaped bracket 20, and the first U-shaped bracket 20 includes a front end side wall 1 and a rear end side wall 13 arranged in parallel with the front end side wall. The first U-shaped bracket also includes a first bottom wall 19 connected between the front end side wall and the rear end side wall. The front end side wall 1, the rear end side wall 13 and the first bottom wall 19 constitute a U-shaped structure.

[0031] Two front guide rods 6 arranged at intervals on the left and right are fixed on the front end side wall, the guiding direction of the front guide rods 6 extends along the front-to-back direction, and the front end of the front guide rods 6 is fixed to the top of the front end side wall 1; two rear guide rods 12 arranged at intervals on the left and right are fixed on the rear end side wall 13, the guiding direction of the rear guide rods 12 extends along the front-to-back direction, and the rear end of the rear guide rods is fixed to the top of the rear end side wall.

[0032] The front-to-back direction shock-absorbing unit includes a front moving member 3 which is guided and moved along the front-to-back direction and assembled on the front guide rod, and the front end side wall 1 constitutes a front baffle plate for pushing the front moving member toward the rear; the front-to-back direction shock-absorbing unit also includes a rear moving member 15 which is guided and moved along the front-to-back direction and assembled on the rear guide rod, and the rear end side wall 13 constitutes a rear baffle plate for pushing the rear moving member toward the front.

[0033] A front spring 5 is provided at the front moving member and the front end of the sensor body, a first gear 18 with a rotation axis extending in the left-right direction is rotatably assembled on the rear moving member, a first rack meshing with the lower end of the first gear 18 is installed at the upper end of the rear moving member for guiding movement in the front-back direction, a rear spring is provided between the first rack and the rear end of the sensor body, and a second rack 17 meshing with the upper end of the first gear is provided on the front moving member.

[0034] In this embodiment, the rear moving member includes a first transverse plate 16 and a third vertical plate 14 arranged perpendicularly to the first transverse plate 16, the first transverse plate 16 and the third vertical plate 14 form a T-shaped structure, the third vertical plate 14 is guided and moved in cooperation with the rear guide rod 12, and the first gear 18 is rotatably assembled on the first transverse plate 16. The first rack includes a rack body 9 guided and moved in cooperation with the first transverse plate in the front-to-back direction and a first vertical plate 10 vertically fixedly connected to the rack body 9, the rear spring 11 is arranged between the first vertical plate 10 and the sensor body 8, and the front end of the rear spring 11 is fixedly connected to the rear end of the sensor body, and the rear end of the rear spring 11 is fixedly connected to the first vertical plate.

[0035] The front moving member includes a second vertical plate 2 arranged in parallel with the first vertical plate and a second horizontal plate 4 fixed to the upper end of the second vertical plate 2. The second rack 17 is fixed to the bottom of the second horizontal plate 4. The bottom of the second vertical plate cooperates with the front guide rod 6 for guiding movement.

[0036] A sensor support 7 is fixed on the first bottom wall, and the bottom of the sensor body 8 is guided and moved in cooperation with the sensor support 7 in the front-rear direction.

[0037] In the present embodiment, the friction force between the rear side moving member and the mechanism frame is greater than the sum of the friction force between the first rack, the rear side moving member and the force of the rear side spring on the rear side moving member. That is, the friction force between the third vertical plate and the rear side guide rod is F, the friction force f1 between the rack body and the first cross plate, and the maximum force of the rear side spring on the first vertical plate is f2, F>f1+f2.

[0038] When in use, the mechanism frame is installed on a mobile device. The mobile device in this embodiment can move forward and backward. When the mobile device moves from a stop to a backward start, as shown in FIG. Figure 2~3 As shown, Figure 2 , Figure 3 The states occur simultaneously, but two drawings are attached for easier understanding. The first U-shaped bracket moves backward with the moving device, the front side wall pushes the front moving member to move backward, the front spring is squeezed, and the rear side wall moves backward away from the third vertical plate, as shown in FIG. Figure 3 As shown, the second horizontal plate moves backward and rotates the first gear counterclockwise. Since the friction between the rear guide rod and the third vertical plate is large, the rotation of the first gear cannot cause the third vertical plate to move relative to the rear guide rod. The counterclockwise rotation of the first gear will move the rack body 9 forward, and the rack body will move the first vertical plate forward and squeeze the rear spring. The displacement of the first vertical plate moving forward is the same as the displacement of the second vertical plate moving backward, that is, the extrusion amount of the front spring and the rear spring is the same. In this way, the forces acting on the sensor body by the front spring and the rear spring offset each other, thereby avoiding the shaking problem of the sensor body caused by uneven action of the springs on both sides.

[0039] When the mobile equipment is parked, Figure 4 As shown, due to inertia, the front moving member and the rear moving member move backward relative to the first U-shaped bracket. At this time, a certain distance is formed between the front end side wall 1 and the second vertical plate 2, and the front spring is reset to push the second vertical plate 2 to move forward. When the second vertical plate 2 moves forward, it also moves the second horizontal plate 4 forward. The second horizontal plate moves forward, driving the first gear to rotate clockwise. The clockwise rotating first gear moves the rack body 9 backward, and the rear spring is also released. This also minimizes the spring force difference on both sides of the sensor body and ensures the stability of the sensor body.

[0040] When the weight of the sensor body is relatively light and the weight of the sensor body can be supported by the front spring and the rear spring, the sensor support 7 may not be provided.

[0041] Embodiment 2 of the anti-vibration sensor is as follows Figure 6-7As shown: Example 2 is different from Example 1 in that, in this embodiment, the mobile device can move not only forward and backward but also left and right. Therefore, the frame not only includes a first U-shaped bracket 20, but also includes a second U-shaped bracket 25 arranged perpendicular to the first U-shaped bracket. The second U-shaped bracket 25 includes a left side wall 26, a right side wall 30 arranged parallel to the left side wall, and a second bottom wall 28 connected between the left side wall and the right side wall. The left side wall 26 is provided with a left guide rod 27 whose guiding direction extends in the left-right direction, and the right side wall 30 is provided with a right guide rod 29 whose guiding direction extends in the left-right direction.

[0042] A left-right direction shock absorbing unit is arranged between the second U-shaped bracket 25 and the sensor body, and the structure of the left-right direction shock absorbing unit is the same as that of the front-back direction shock absorbing unit. The structure of the left-right direction shock absorbing unit is the same as that of the front-back direction shock absorbing unit in the anti-seismic sensor embodiment 1, except that the arrangement directions of the left-right direction shock absorbing unit and the front-back direction shock absorbing unit are perpendicular to each other. Therefore, in this embodiment, the specific structure of the left-right direction shock absorbing unit is not described in detail.

[0043] In order to avoid mutual influence between left and right movement and front and back movement, a first cross slide is provided between the sensor body and the sensor support, and the first cross slide can slide in the front and back direction and the left and right direction. The spring of the front and back direction shock absorbing unit is connected to the sensor body through a first slide rail 22 that can slide in the left and right direction; the spring 24 of the left and right direction shock absorbing unit is connected to the sensor body through a second slide rail 23 that can slide in the front and back direction. The first slide rail includes a first track with a guiding direction along the left and right direction and a first slider that cooperates with the first track for guiding movement, and the corresponding end of the spring of the front and back direction shock absorbing unit is connected to the first slider; the second slide rail includes a second track extending in the guiding direction along the front and back direction and a second slider that cooperates with the second track for guiding movement, and the corresponding section of the spring of the left and right direction shock absorbing unit is connected to the second slider.

[0044] In this way, when the mechanism frame moves forward and backward, the second slider can be guided and moved in the second track to prevent the spring of the shock absorbing unit in the left and right directions from being pulled; when the mechanism moves left and right, the first slider can be guided and moved in the first track to prevent the spring of the shock absorbing unit in the front and back directions from being pulled. The external measurement of the sensor body can be achieved through the gap between the front end side wall and the left end side wall.

[0045] In the above description of this specification, unless otherwise clearly specified and limited, the terms "fixed", "installed", "connected" or "connected" should be understood in a broad sense. For example, with regard to the term "connection", it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal connection of two elements or the interaction relationship between two elements. Therefore, unless otherwise clearly defined in this specification, those skilled in the art can understand the specific meanings of the above terms in the present invention according to the specific circumstances.

[0046] According to the above description of this specification, those skilled in the art may also understand that the terms used below, such as "up", "down", "front", "back", "left", "right", "length", "width", "thickness", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential", "center", "longitudinal", "lateral", "clockwise" or "counterclockwise", etc., which indicate the orientation or position relationship, are based on the orientation or position relationship shown in the drawings of this specification, and are only for the purpose of facilitating the explanation of the scheme of the present invention and simplifying the description, rather than explicitly or implicitly indicating that the device or element involved must have the specific orientation, be constructed and operate in a specific orientation. Therefore, the above-mentioned orientation or position relationship terms cannot be understood or interpreted as limitations on the scheme of the present invention.

[0047] In addition, the terms "first" or "second" used in this specification to refer to numbers or ordinals are only used for descriptive purposes and cannot be understood as explicitly or implicitly indicating relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of this specification, the meaning of "plurality" is at least two, such as two, three or more, etc., unless otherwise clearly and specifically defined.

[0048] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A seismic sensor, comprising a sensor body and a shock absorbing mechanism arranged between the sensor body and a mobile device, characterized in that: The shock absorbing mechanism comprises a mechanism frame, on which a front-to-back direction shock absorbing unit is arranged, the front-to-back direction shock absorbing unit comprises a front moving member guided and moved along the front-to-back direction and assembled at the front end of the mechanism frame, the front-to-back direction shock absorbing unit also comprises a rear moving member guided and moved along the front-to-back direction and assembled at the rear end of the mechanism frame, the front end of the mechanism frame has a front baffle plate for pushing the front moving member backward, the rear end of the mechanism frame has a rear baffle plate for pushing the rear moving member forward, a front spring is arranged between the front moving member and the sensor body, a first gear with a rotation axis extending in the left-right direction is rotatably arranged on the rear moving member, a first rack meshing with the lower end of the first gear is arranged on the upper end of the rear moving member along the front-to-back direction and guided and moved, a rear spring is arranged between the first rack and the rear end of the sensor body, a second rack meshing with the upper end of the first gear is arranged on the front moving member, and a friction force between the rear moving member and the mechanism frame is greater than the sum of the friction force between the first rack and the rear moving member and the force acting on the rear moving member by the rear spring.

2. The anti-seismic sensor according to claim 1, characterized in that: The first rack includes a rack body which is matched with the rear moving member for guiding movement and a first vertical plate which is arranged vertically with the rack body. The rear spring is arranged between the first vertical plate and the sensor body.

3. The anti-seismic sensor according to claim 2, characterized in that: The front moving part comprises a second vertical plate arranged in parallel with the first vertical plate and a second horizontal plate fixed to the upper end of the second vertical plate, a second rack is fixed to the bottom of the second horizontal plate, and the second vertical plate is matched with the mechanism frame for guiding movement.

4. The anti-seismic sensor according to claim 3, characterized in that: The rear moving part includes a first horizontal plate and a third vertical plate arranged perpendicular to the first horizontal plate. The first horizontal plate and the third vertical plate form a T-shaped structure. The third vertical plate is in guiding motion cooperation with the rear end of the mechanism frame, and the rack body is in guiding motion cooperation with the first horizontal plate.

5. The anti-seismic sensor according to claim 4, characterized in that: The mechanism frame includes a first U-shaped bracket, the first U-shaped bracket includes a front end side wall and a rear end side wall arranged in parallel with the front end side wall, the first U-shaped bracket also includes a first bottom wall connected between the front end side wall and the rear end side wall, two front guide rods arranged at intervals on the left and right are fixed to the front end side wall, the second vertical plate is guided and moved in cooperation with the front guide rods, and the front end side wall constitutes the front baffle plate; two rear guide rods arranged at intervals on the left and right are fixed to the rear end side wall, the third vertical plate is guided and moved in cooperation with the rear guide rods, and the rear end side wall constitutes the rear baffle plate.

6. The anti-seismic sensor according to claim 5, characterized in that: A sensor support is fixed on the first bottom wall, and the sensor support is guided and moved in cooperation with the sensor body in the front-rear direction.

7. The anti-seismic sensor according to claim 6, characterized in that: The sensor frame includes a second U-shaped bracket arranged perpendicularly to the first U-shaped bracket, the second U-shaped bracket includes a left side wall, a right side wall arranged parallel to the left side wall, and a second bottom wall connected between the left side wall and the right side wall, and a left-right direction shock absorbing unit is arranged between the second U-shaped bracket and the sensor body, and the structure of the left-right direction shock absorbing unit is the same as the structure of the front-rear direction shock absorbing unit.

8. The anti-seismic sensor according to claim 7, characterized in that: A first cross slide is arranged between the sensor body and the sensor support, and the first cross slide can slide in the front-rear direction and the left-right direction.

9. The anti-seismic sensor according to claim 7, characterized in that: The spring of the front-rear direction damping unit is connected to the sensor body via a first slide rail that can slide in the left-right direction; the spring of the left-right direction damping unit is connected to the sensor body via a second slide rail that can slide in the front-rear direction.

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