CN104440050B - Erecting device for install sensor - Google Patents

Abstract

The invention discloses a mounting device for installing a sensor, comprising: a mounting bracket, on which a guide hole is formed; a support rod, which passes through the mounting hole on the sensor shell and the mounting bracket on the mounting bracket; The guide hole is fixed on the shell of the sensor and the mounting bracket; and the elastic element is installed between the support rod and the mounting bracket, so that the sensor can overcome the deformation force of the elastic element relative to the mounting bracket along the The support rod moves. Therefore, when the external trigger force or trigger displacement is too large, the sensor will overcome the initial deformation force of the elastic element and move relative to the mounting bracket, thereby using the elastic buffer to reserve a certain elastic release space for the trigger action of the sensor, which can effectively reduce the The precision requirements of the installation position can effectively protect the sensor device when excessive force or excessive trigger displacement occurs, so that the sensor can still work normally even under the condition of excessive force or excessive trigger displacement.

Description

Mounting device for mounting the sensor

technical field

The invention relates to a mounting device for mounting a sensor.

Background technique

Existing contact sensors generally adopt a non-flexible fixed installation method, which requires high installation and positioning accuracy, and the sensor itself also needs to have high mechanical strength to resist triggering the sensor action (contact or closing action). ) greater force. However, for some sensitive sensors, such as micro-electromechanical system (MEMS) sensors, optical fiber sensors, etc., a large external force can easily cause damage to the internal structure of the sensor and cause it to fail. Or due to the deviation of the accuracy of the installation position, the sensor is over-pressurized or the pressure is not enough, resulting in the sensor not working properly.

Contents of the invention

The purpose of the present invention is to solve at least one aspect of the above-mentioned problems and deficiencies in the prior art.

An object of the present invention is to provide a mounting device for installing sensors. The mounting device adopts a flexible mounting method to mount the sensor on it, and uses elastic buffering to reserve a certain elastic release space for the triggering action of the sensor, which can effectively The accuracy requirements for the installation position are reduced, and the sensor can be effectively protected when excessive force occurs.

According to one aspect of the present invention, there is provided a mounting device for mounting a sensor, comprising: a mounting bracket, on which a guide hole is formed; a support rod, which passes through the mounting hole on the housing of the sensor And the guide hole on the mounting bracket and fixed on the shell of the sensor and the mounting bracket; and the elastic element, installed between the support rod and the mounting bracket, so that the sensor can overcome the deformation force of the elastic element relative to the The mounting bracket moves along the support rod.

According to an exemplary embodiment of the present invention, the elastic element is configured to apply a predetermined initial deformation force F ₀ to the sensor when no external force F ₁ acts on the sensor. The deformation force F ₀ is set to be slightly greater than the external force F ₁ ' when the sensing contact moves to be flush with the shell, and smaller than the maximum force F _max that the sensor can withstand; the initial deformation force F applied to the sensor The direction of ₀ is opposite to the direction of the external force F ₁ that the sensor receives in practical applications, so that when the external force F ₁ applied to the sensor is greater than the trigger force F _a of the sensor contact and less than F ₀ , the sensor It is triggered to turn on and start to transmit the sensing signal, but the elastic element does not deform; and when the external force F ₁ exerted on the sensor continues to increase to F ₁ ', the sensing contact moves to be flush with the housing If you continue to increase the external force F ₁ at this time, the force will be directly applied to the sensor housing. When the external force F ₁ is greater than F ₀ , the elastic element will start to deform so as to convert part of the external force into the deformation of the spring Force, so that the external force borne by the sensing contact remains less than the maximum force F _max .

According to another exemplary embodiment of the present invention, an opening is formed on the mounting bracket, at least a part of the housing of the sensor is accommodated in the opening and can move in the opening.

According to another exemplary embodiment of the present invention, the installation device has one or more support rods. and the multiple guide holes on the mounting bracket.

According to another exemplary embodiment of the present invention, the first end of the support rod passes through the mounting hole of the sensor and the guide hole of the mounting bracket and is fixed on one of the sensor and the mounting bracket by a locking member; and the The second end of the support rod opposite to the first end is fixed on the other of the sensor and the mounting bracket.

According to another exemplary embodiment of the present invention, a radially recessed groove is formed at the first end of the support rod, and the locking member is fixed in the groove; and the support rod The second end is formed with a radially protruding enlarged portion for fixing the second end of the support rod on the other of the sensor and the mounting bracket.

According to another exemplary embodiment of the present invention, the opening is formed on one side of the mounting bracket and is roughly U-shaped.

According to another exemplary embodiment of the present invention, elastic elements are provided on both sides of the support rod located on the mounting bracket.

According to another exemplary embodiment of the present invention, an elastic element is provided only on one of the two sides of the mounting bracket on the support rod.

According to another exemplary embodiment of the present invention, the mounting bracket includes: a first bracket wall on which the sensor is installed; and a second bracket wall perpendicular to the first bracket wall, the first bracket wall Two bracket walls are used for fixing to a fixed body.

According to another exemplary embodiment of the present invention, the mounting bracket is formed by folding a strip-shaped plate, and the first bracket wall is a frame member folded into a rectangle.

According to another exemplary embodiment of the present invention, the mounting bracket includes: a first bracket wall on which the sensor is installed; a second bracket wall perpendicular to the first bracket wall, and the second bracket wall The bracket wall is used to be fixed to a fixed body; and the third bracket wall is connected between the first bracket wall and the second bracket wall, so that the entire mounting bracket is triangular.

According to another exemplary embodiment of the present invention, the mounting bracket is a molded part or a machined part.

According to another exemplary embodiment of the present invention, the sensor is a touch sensor.

According to another exemplary embodiment of the present invention, the sensor is a MEMS sensor or an optical fiber sensor.

Compared with the prior art, the installation device of the present invention applies a predetermined initial deformation force (that is, the protective force to the sensor) to the sensor through the elastic element. When the external trigger force is too large or the trigger displacement is too large, the sensor will overcome The initial deformation force of the elastic element moves relative to the mounting bracket, thereby using the elastic buffer to reserve a certain elastic release space for the trigger action of the sensor, which can not only effectively reduce the accuracy requirements for the installation position, but also be effective when excessive force occurs. Protect the sensing device so that the sensor can still work normally even under this excessive force condition. When the external force is greater than the protective force of the sensor itself, the design of the invention can automatically transfer the force to the elastic buffer. Similarly, if the displacement of the triggering action exceeds the limited displacement of the sensor, the overtravel displacement can also be transferred to the elastic buffer element, so as to realize the protection of the sensor and make the sensor still work normally.

Description of drawings

Fig. 1 shows a schematic perspective view of a mounting device for mounting a sensor according to an exemplary embodiment of the present invention;

Fig. 2 shows the three-dimensional schematic view of the mounting bracket for mounting the sensor mounting device in Fig. 1;

Fig. 3 shows the three-dimensional schematic view of the support rod of the mounting device for mounting the sensor in Fig. 1; and

Fig. 4 shows a schematic perspective view of an installation device for installing a sensor according to another exemplary embodiment of the present invention.

detailed description

Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the drawings, wherein the same or similar reference numerals denote the same or similar elements. The embodiments described below with reference to the figures are exemplary and are intended to explain the present invention, and should not be construed as limiting the present invention.

Fig. 1 shows the three-dimensional schematic view of the mounting device for installing sensor 30 according to an exemplary embodiment of the present invention; Fig. 2 shows the three-dimensional schematic view of the mounting bracket 10 of the mounting device for mounting sensor 30 in Fig. 1; Fig. 3 shows a schematic perspective view of the support rod 20 of the installation device for installing the sensor 30 in FIG. 1 .

In the exemplary embodiment shown in FIGS. 1 to 3 , a mounting device for mounting the sensor 30 is provided. This installation device comprises: installation bracket 10, is formed with guide hole 13 on described installation bracket 10; 13 and fixed on the housing 31 of the sensor 30 and the mounting bracket 10; and the elastic element 50, installed between the support rod 20 and the mounting bracket 10, so that the sensor 30 can overcome the deformation force of the elastic element 50 relative The installation bracket 10 moves along the support rod 20 .

As shown in FIGS. 1-3 , the mounting bracket 10 includes a first bracket wall 11 and a second bracket wall 12 perpendicular to the first bracket wall 11 . In the illustrated embodiment, the sensor 30 is mounted on the first bracket wall 11, while the second bracket wall 12 is intended to be fixed to a fixed body (not shown). As shown in FIG. 2 , a plurality of through holes 15 are formed on the second bracket wall 12 for inserting fasteners and installing the mounting bracket 10 on a fixed body.

In the embodiment shown in FIGS. 1-3, the mounting bracket 10 may be formed by folding a strip of steel plate, and the first bracket wall 11 is folded into a rectangular frame member.

1-3, a substantially U-shaped opening 14 is formed at the end of the first bracket wall 11 of the mounting bracket 10, and the opening 14 passes through the first bracket wall 11 and is on one side of the mounting bracket 10. The opening 14 is open from the top to the outside so that the sensor 30 can be installed in the opening 14 . In the illustrated embodiment, a portion of the housing 31 of the sensor 30 is received in the opening 14 and is movable in the opening 14 along the support rod.

Please continue to refer to FIGS. 1 to 3 , the illustrated mounting device has two support rods 20 , and a support rod 20 guides from the mounting hole on the upper side of the housing 31 of the sensor 30 and the upper side of the opening 14 of the mounting bracket 10 . The hole 13 passes through, and another support rod 20 passes through the mounting hole on the lower side of the housing 31 of the sensor 30 and the guide hole 13 on the lower side of the opening 14 of the mounting bracket 10 . However, the present invention is not limited to the illustrated embodiment, and the installation device may also have one, three or more support rods 20 .

As shown in FIGS. 1 to 3 , the first end (the right end in FIG. 3 ) of the support rod 20 passes through the mounting hole of the sensor 30 and the guide hole 13 of the mounting bracket 10 and is fixed on the mounting bracket 10 by a locking member 40. , the second end (left end in FIG. 3 ) opposite to the first end of the support rod 20 is fixed on the sensor 30 .

Specifically, referring to FIG. 3 , a radially recessed groove portion 22 is formed at the first end of the support rod 20 , and the locking member 40 is fixed in the groove portion 22 , so that the first end of the support rod 20 is fixed. on the mounting bracket 10. The second end of the support rod 20 is formed with a radially protruding enlarged portion 21 for fixing the second end of the support rod 20 on the housing 31 of the sensor 30 .

However, the present invention is not limited thereto, and the second end of the support rod 20 may also be formed to be the same as the first end, that is, a radially recessed groove portion may also be formed at the second end of the support rod 20, and used The locking member fixed in the locking groove fixes the second end of the support rod 20 on the housing 31 of the sensor 30 .

In addition, although in the embodiment shown in FIG. 1 , the first end of the support rod 20 having the groove portion 22 is fixed on the mounting bracket 10 , the second end of the support rod 20 having the enlarged portion 21 is fixed on the sensor 30 However, the present invention is not limited thereto, the first end of the support rod 20 having the groove part 22 can also be fixed on the sensor 30, and the second end of the support rod 20 having the enlarged part 21 can be fixed on the installation on the bracket 10.

In this way, the support rod 20 can be fixed on the mounting bracket 10 and the housing 31 of the sensor 30 through the upper locking member 40 provided at its first end and the enlarged portion 21 formed at its second end, thereby preventing the support rod from 20 is detached from the mounting bracket 10 and the housing 31 of the sensor 30.

In the embodiment shown in FIG. 1 and FIG. 3 , elastic elements 50 are provided on both sides of the support rod 20 located on the installation bracket 10 . The elastic element 50 can be a spring or other suitable elastic elements. On the side of the mounting bracket 10 facing away from the sensor 30 , an elastic element 50 is installed on the support rod 20 , one end of the elastic element 50 elastically engages with the locking member 40 , and the other end engages with the mounting bracket 10 . At the side where the sensor 30 of the mounting bracket 10 is located, the elastic element 50 is installed on the support rod 20, and one end of the elastic element 50 is elastically engaged with the washer 60 (such as an elastic washer) that is sleeved on the support rod 20, and the other end is connected to the mounting rod 20. The bracket 10 engages.

In the present invention, the washer 60 is not necessary, and the elastic member 50 can also be directly elastically contacted and engaged with the housing 31 of the sensor 30 .

In the illustrated embodiment, the sensor 30 is a touch sensor, especially a very precise touch sensor. For example, the sensor 30 may be a micro-electromechanical system sensor or an optical fiber sensor.

Please refer to Fig. 1, in the present invention, the elastic element 50 is set so that: when no external force F ₁ acts on the sensor 30, the elastic element 50 applies a predetermined initial deformation force F ₀ to the sensor 30, the initial deformation force F ₀ is set to be slightly greater than the external force F ₁ ′ when the sensing contact 32 moves to be flush with the housing 31, and is less than the maximum force F _max that the sensor 30 can withstand; the initial deformation force applied to the sensor 30 The direction of F ₀ is opposite to the direction of the external force F ₁ that the sensor 30 receives in practical applications, so that when the external force F ₁ applied to the sensor 30 is greater than the trigger force F _a of the sensor contact 32 and less than F ₀ , the sensor 30 is triggered to turn on and start to transmit the sensing signal, but the elastic element 50 does not deform; and when the external force F ₁ exerted on the sensor 30 continues to increase to F ₁ ', the sensing contact 32 moves until it is flush with the shell 31, if the external force F ₁ continues to be increased at this time, the force will be directly applied to the sensor shell 31, and when the external force F ₁ is greater than F ₀ , the elastic element 50 begins to deform, thereby partially The external force is converted into the deformation force of the spring, so that the external force borne by the sensing contact 32 remains smaller than the maximum force F _max .

The above-mentioned fixed force values have the following relationship: Fa<F ₁ '<F ₀ <F _max , F ₁ is the external variable force, when F ₁ gradually increases from 0, it will first reach Fa trigger Sensing, and then reach F ₁ ' to make the contact and the shell flush, that is, the safety travel of the sensor, and then if it continues to increase, when it is greater than F ₀ , it starts to compress the spring. There is a static process before starting to compress the spring, that is, when F ₁ '≤F ₁ ≤F ₀ , since the spring has not started to act, the force exerted on the shell at this time is F ₁ -F ₁ ', so F ₀ It should be set slightly larger than F ₁ '.

In the present invention, since the elastic element 50 is compressed or stretched to produce a predetermined initial deformation force F ₀ when it is initially installed, the preset initial deformation force F ₀ is used as a protective force for the sensor 30, and its magnitude can be determined according to In practice, free adjustment is required, for example, it can be adjusted by adjusting the pre-compression or stretching amount of the elastic element 50 or the material or diameter of the elastic element 50 . Although not shown, in a preferred embodiment of the present invention, an adjustment mechanism for adjusting the initial compression or stretching of the elastic element 50 can also be provided on the support rod 20, for example, a screw thread formed on the support rod 20 And screw the nut on the support rod 20, like this, can freely adjust and change the initial deformation force of the elastic element 50 by adjusting the nut. In another preferred embodiment of the present invention, the initial position of the elastic element 50 can also be adjusted by arranging multiple locking grooves 22 at multiple different axial positions of the support rod 20 and by selecting the installation position of the locking member 40 Amount of compression or stretch. In addition, in the present invention, the initial deformation force F ₀ can also be realized by adjusting the length of the elastic element 50 , the coefficient of elasticity of the elastic element 50 , and the thickness of the locking member 40 or the washer 60 .

As shown in Figure 1, this sensor 30 has the sensing contact 32 that protrudes outward from the shell 31 of sensor 30 predetermined distance, therefore, the sensing contact 32 of this sensor 30 can move predetermined security relative to shell 31. Stroke, when the external extrusion or stretching stroke is greater than this safety stroke, the external extrusion or stretching will directly act on the shell 31 of the sensor 30, and the shell 31 is fixed on the support rod 20, therefore, the shell of the sensor 30 31 can move backward or forward along the support bar 20 under the balance of the deforming force of the elastic element 50 (the movable distance can be adjusted by the number of turns of the elastic element 50 and the position of the groove part 22 on the support bar 20). The protection sensor 30 will not be damaged or cannot work normally due to forced extrusion/stretching due to the deviation of the installation position.

In this way, even if there is a certain error in the installation position of the sensor 30, causing the external extrusion or stretching stroke to be greater than the safety stroke of the sensor 30, the sensor 30 will not be damaged, thereby reducing the requirement for the accuracy of the installation position of the sensor 30.

FIG. 4 shows a schematic perspective view of an installation device 100 for installing a sensor 30 according to another exemplary embodiment of the present invention.

In the embodiment shown in FIG. 4 , the elastic element 50 is only arranged on one side of the support rod 20 near the sensor 30 of the installation bracket 100 , and there is no An elastic element 50 is provided. The present invention is not limited to the embodiment of this FIG. 4 , the elastic element 50 can also be arranged only on the other side of the support rod 20 that is located at the mounting bracket 100 away from the sensor 30 , and on the side of the support rod 20 that is located at the mounting bracket 100 close to the sensor One side of 30 is not provided with elastic element 50 .

In addition, in the embodiment shown in FIG. 4 , the mounting bracket 100 includes: a first bracket wall 110 on which the sensor 30 is installed; a second bracket wall 120 perpendicular to the first bracket wall 110 , the second The bracket wall 120 is used to be fixed on a fixed body; and the third bracket wall 130, the third bracket wall 130 is connected between the first bracket wall 110 and the second bracket wall 120, so that the whole installation bracket 100 is triangular.

As shown in FIG. 4 , an opening 114 is formed on the first bracket wall 110 , and at least a part of the housing 31 of the sensor 30 is accommodated in the opening 114 . A plurality of through holes 115 are formed on the second bracket wall 120 for inserting fasteners and mounting the mounting bracket 100 to a fixed body (not shown).

In an exemplary embodiment of the present invention, the mounting bracket 100 may be a molded part or a machined part.

While embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that changes may be made in these embodiments without departing from the principles and spirit of the invention. The scope of application of the present invention is defined by the appended claims and their equivalents. It should be noted that the word "comprising" does not exclude other elements or steps, and the word "a" or "an" does not exclude a plurality. Furthermore, any element references in the claims should not be construed as limiting the scope of the invention.

Claims (15)

1. A mounting device for mounting a sensor, characterized in that it comprises: a mounting bracket, a guide hole is formed on the mounting bracket; a support rod, the support rod passes through the mounting hole on the housing of the sensor and the guide hole on the mounting bracket and is fixed on the housing of the sensor and the mounting bracket; and an elastic element installed between the support rod and the installation bracket, so that the sensor can overcome the deformation force of the elastic element and move along the support rod relative to the installation bracket, Wherein, the sensor includes a sensing contact extending from a housing of the sensor, and the sensing contact is not in contact with the mounting bracket after the sensor is mounted on the mounting device. 2. Mounting device according to claim 1, characterized in that, The elastic element is configured to: When there is no external force F ₁ acting on the sensor, the elastic element exerts a predetermined initial deformation force F ₀ on the sensor, and the initial deformation force F ₀ is set to be greater than that to move the sensing contact to be flush with the housing When the external force F ₁ ', and less than the sensor can withstand the maximum force F _max ; The direction of the initial deformation force F ₀ applied to the sensor is opposite to the direction of the external force F ₁ that the sensor receives in practical applications, so that when the external force F ₁ applied to the sensor is greater than the trigger force F of the sensor _contact And when it is less than F ₀ , the sensor is triggered to be turned on and starts to transmit a sensing signal, but the elastic element does not deform; and When the external force F ₁ applied on the sensor continues to increase to F ₁ ', the sensing contact moves to be flush with the shell, if the external force F ₁ continues to increase at this time, the force will be directly applied to the sensor On the housing, when the external force F ₁ is greater than F ₀ , the elastic element starts to deform to convert part of the external force into the deformation force of the spring, so that the external force borne by the sensing contact remains smaller than the maximum force F _max . 3. Mounting device according to claim 2, characterized in that, An opening is formed on the mounting bracket in which at least a portion of the housing of the sensor is accommodated and movable. 4. Mounting device according to claim 3, characterized in that, The installation device has one or more support rods, and when there are multiple support rods, the multiple support rods respectively pass through multiple mounting holes on the housing of the sensor and multiple guide holes on the mounting bracket. 5. Mounting device according to claim 4, characterized in that, The first end of the support rod passes through the mounting hole of the sensor and the guide hole of the mounting bracket and is fixed on one of the sensor and the mounting bracket by a locking member; and The second end of the support rod opposite to the first end is fixed on the other of the sensor and the mounting bracket. 6. Mounting device according to claim 5, characterized in that, A radially recessed slot portion is formed at the first end of the support rod, and the locking member is fixed in the slot portion; and The second end of the support rod is formed with a radially protruding enlarged portion for fixing the second end of the support rod on the other of the sensor and the mounting bracket. 7. Mounting device according to claim 6, characterized in that, The opening is formed on one side of the mounting bracket and has a substantially U-shape. 8. Mounting device according to claim 7, characterized in that, Elastic elements are provided on both sides of the support rod located on the mounting bracket. 9. Mounting device according to claim 7, characterized in that, An elastic element is provided only on one of the two sides of the mounting bracket on the support rod. 10. The mounting device according to claim 8 or 9, wherein the mounting bracket comprises: a first bracket wall on which the sensor is mounted; and A second support wall perpendicular to the first support wall, the second support wall is adapted to be fixed to a fixed body. 11. Mounting device according to claim 10, characterized in that, The mounting bracket is folded from a strip-shaped plate, and the first bracket wall is a frame member folded into a rectangle. 12. The mounting device according to claim 8 or 9, wherein the mounting bracket comprises: a first bracket wall on which the sensor is mounted; a second support wall perpendicular to the first support wall, said second support wall being adapted to be secured to a fixed body; and The third bracket wall, the third bracket wall is connected between the first bracket wall and the second bracket wall, so that the whole installation bracket is triangular. 13. The mounting device according to claim 12, wherein the mounting bracket is a molded part or a machined part. 14. The mounting device of claim 1, wherein the sensor is a contact sensor. 15. The installation device according to claim 14, characterized in that the sensor is a MEMS sensor or an optical fiber sensor.