Force sensor suitable for lateral wire outgoing in small space

Abstract

The utility model provides a lateral wire outlet force sensor suitable for a small space, comprising a sensor elastic body, the sensor elastic body is provided with a strain cabin and an electronic cabin, the strain cabin is communicated with the electronic cabin, one end of the sensor elastic body is provided with a wire outlet hole, the wire outlet hole is communicated with the electronic cabin, and the wire outlet hole is communicated with the electronic cabin. A wire outlet hole is formed in the sensor elastic body, a wire protection ring is arranged on the wire outlet hole, one end, provided with the wire outlet hole, of the sensor elastic body comprises a first end face and a second end face, a step is arranged between the first end face and the second end face, the position height of the first end face is lower than that of the second end face, and the wire outlet hole is located in the first end face. According to the utility model, the cable is laterally led out, the metal lock head is changed into the protective ring, the height of the surface where the cable outlet hole is located is reduced, the occupied space is reduced, the cable lock is suitable for the environment where the installation space is narrow and the installation table needs to rotate, and the situation that a sensor fails due to cable collision caused by cable outgoing of a conventional cable lock head can be effectively avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of force sensors, in particular to a force sensor with side outlet suitable for small spaces. Background Art

[0002] In the market, for sensors, especially cantilever beam force sensors, the cable outlet method is mostly the cable lock head method. Due to the certain hardness of the cable lock head and the cable, when bundling the cable, it cannot completely fit and fix on the elastic body. For the situation where the installation location needs to rotate and the space is small, when the rotating shaft rotates, it will collide with the cable lock head, easily causing damage to the cable lock head and the cable, and then leading to the failure of the sensor. Content of the Utility Model

[0003] For this reason, an object of the present utility model is to provide a force sensor with side outlet suitable for small spaces to solve the problems mentioned in the background art and overcome the deficiencies in the prior art.

[0004] To achieve the above object, the present utility model adopts the following technical solutions:

[0005] A force sensor with side outlet suitable for small spaces, including a sensor elastic body, a strain chamber and an electronic chamber are provided on the sensor elastic body, the strain chamber is communicated with the electronic chamber, an outlet hole is provided at one end of the sensor elastic body, the outlet hole is communicated with the electronic chamber, and a protective coil is provided on the outlet hole.

[0006] Further, one end of the sensor elastic body with the outlet hole includes a first end face and a second end face, a step is provided between the first end face and the second end face, the position height of the first end face is lower than that of the second end face, and the outlet hole is located on the first end face.

[0007] Further, the force sensor further includes a wire pressing clip, and the wire pressing clip is installed on the second end face through a fixing screw.

[0008] Further, the strain chamber includes a first strain chamber and a second strain chamber, the first strain chamber and the second strain chamber are respectively arranged on opposite sides of the sensor elastic body, and the first strain chamber and the second strain chamber are communicated through a first communication hole.

[0009] Further, the force sensor further includes a second communication hole, and the electronic chamber and the second strain chamber are communicated through the second communication hole.

[0010] Further, the force sensor further includes a third communication hole, and the electronic chamber and the outlet hole are communicated through the third communication hole.

[0011] Further, both the electronic chamber and the strain chambers are circular, and resistance strain gauges are provided in the first strain chamber and the second strain chamber.

[0012] Further, the force sensor further includes caps, and the caps include a first cap, a second cap, and a third cap. The first cap covers the opening of the first strain chamber, the second cap covers the opening of the second strain chamber, and the third cap covers the opening of the electronic chamber.

[0013] Further, the force sensor further includes a circuit board, and the circuit board is disposed in the electronic chamber.

[0014] Further, the force sensor further includes a plurality of process holes, and the plurality of process holes penetrate through the sensor elastomer.

[0015] Therefore, the present utility model has the following beneficial effects:

[0016] A force sensor with side outlet suitable for small spaces according to the present utility model has the cable line exiting laterally, changes the metal lock head to a protective coil, and at the same time reduces the height of the surface where the outlet hole is located, reducing the occupied space. It is suitable for environments with narrow installation spaces and rotating installation platforms, and can effectively avoid the collision of the cable caused by the conventional cable lock head outlet, thereby preventing the sensor from failing.

[0017] Additional aspects and advantages of the present utility model will be given in part in the following description, become apparent in part from the following description, or be understood through the practice of the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The above and / or additional aspects and advantages of the present utility model will become apparent and be readily understood from the following description of the embodiments in conjunction with the accompanying drawings, where:

[0019] Figure 1 is a schematic diagram of the overall structure of the force sensor of the present utility model;

[0020] Figure 2 is an exploded view of the force sensor of the present utility model;

[0021] Figure 3 is a front view of the force sensor of the present utility model;

[0022] Figure 4 is a rear view of the force sensor of the present utility model;

[0023] Figure 5 is a rear view of the force sensor of the present utility model with the first cap hidden;

[0024] Figure 6 is a cross-sectional view taken along line A-A shown in FIG. 3;

[0025] Figure 7 It is the sectional view taken along line B-B shown in FIG. 3;

[0026] In the figure: 1, sensor elastomer; 2, electronic compartment; 3, wire outlet hole; 4, coil guard; 5, first end face; 6, second end face; 7, step; 8, wire pressing clip; 9, fixing screw; 10, first strain compartment; 11, second strain compartment; 12, first communication hole; 13, second communication hole; 14, third communication hole; 15, resistance strain gauge; 16, first cover; 17, second cover; 18, third cover; 19, process hole; 20, cable. Specific embodiments

[0027] Embodiments of the present utility model will be described in detail below. Examples of the embodiments are shown in the drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and are intended to explain the present utility model, and should not be construed as limiting the present utility model.

[0028] In the present utility model, unless otherwise clearly defined and limited, terms such as "installation", "connection", "connection", "fixation" and the like shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0029] As Figures 1-7 shown, a force sensor with side wire outlet applicable to a small space includes a sensor elastomer 1. A strain compartment and an electronic compartment 2 are provided on the sensor elastomer 1. The strain compartment is in communication with the electronic compartment 2. A wire outlet hole 3 is provided on one end face of the sensor elastomer 1. The wire outlet hole 3 is in communication with the electronic compartment 2. A coil guard 4 is provided on the wire outlet hole 3.

[0030] For the force sensor with side wire outlet applicable to a small space of the present utility model, the cable 20 is routed out laterally. The metal lock head is changed to a coil guard 4. At the same time, the height of the surface where the wire outlet hole 3 is located is reduced, reducing the occupied space. It is applicable to the environment where the installation space is narrow and the installation table needs to rotate, and can effectively avoid the collision of the cable 20 caused by the conventional cable 20 lock head wire outlet, thereby causing the sensor to fail.

[0031] Furthermore, one end of the sensor elastomer 1 provided with the wire outlet hole 3 includes a first end face 5 and a second end face 6. A step 7 is provided between the first end face 5 and the second end face 6. The position height of the first end face 5 is lower than the position height of the second end face 6. The wire outlet hole 3 is located on the first end face 5.

[0032] As an implementation manner, as Figure 1 and Figure 2 shown, the step 7 between the first end face 5 and the second end face 6 is inclined, obtuse-angled with the first end face 5, and acute-angled with the second end face 6.

[0033] As an implementation manner, the step 7 between the first end face 5 and the second end face 6 is inclined, acute-angled with the first end face 5, and obtuse-angled with the second end face 6.

[0034] As an implementation manner, the step 7 between the first end face 5 and the second end face 6 can also be vertical, forming a right angle with the first end face 5 and the second end face 6.

[0035] Furthermore, the force sensor further includes a wire pressing clip 8, and the wire pressing clip 8 is installed on the second end face 6 through a fixing screw 9.

[0036] The wire pressing clip 8 is used to fix the cable 20 and can prevent the cable 20 from being damaged by pulling.

[0037] Furthermore, as Figure 2 , Figure 5 , Figure 6 and Figure 7 shown, the strain chamber includes a first strain chamber 10 and a second strain chamber 11. The first strain chamber 10 and the second strain chamber 11 are respectively arranged on opposite sides of the sensor elastomer 1, and the first strain chamber 10 and the second strain chamber 11 are connected and communicated through a first communication hole 12.

[0038] Furthermore, the force sensor further includes a second communication hole 13, and the electronic chamber 2 and the second strain chamber 11 are connected and communicated through the second communication hole 13.

[0039] A resistance strain gauge 15 is arranged in the strain chamber. The resistance strain gauge 15 is electrically connected to the circuit board in the electronic chamber 2. At the same time, the resistance strain gauges 15 in the two strain chambers form a Wheatstone bridge. The first communication hole 12 and the second communication hole 13 are used to arrange the connecting wires between the resistance strain gauges 15 in the first strain chamber 10 and the second strain chamber 11 and the circuit board in the electronic chamber 2.

[0040] Furthermore, the force sensor further includes a third communication hole 14, and the electronic chamber 2 and the wire outlet hole 3 are connected and communicated through the third communication hole 14.

[0041] The third communication hole 14 is used to arrange the connecting wire between the circuit board in the electronic chamber 2 and the external cable 20. The Wheatstone bridge realizes the detection of force and outputs the measured millivolt signal through the cable 20.

[0042] Furthermore, both the electronic chamber 2 and the strain chamber are circular, and resistance strain gauges 15 are arranged in the first strain chamber 10 and the second strain chamber 11.

[0043] Furthermore, the force sensor also includes a cover, which includes a first cover 16, a second cover 17 and a third cover 18. The first cover 16 covers the opening of the first strain bin 10, the second cover 17 covers the opening of the second strain bin 11, and the third cover 18 covers the opening of the electronic bin 2.

[0044] As an implementation method, Figure 2 and Figure 3 As shown, the electronic compartment 2 and the strain compartment are both circular, and the first cover 16, the second cover 17 and the third cover 18 are also circular. The first cover 16, the second cover 17 and the third cover 18 seal the first strain compartment 10, the second strain compartment 11 and the electronic compartment 2 respectively.

[0045] As an implementation mode, the electronic compartment 2 and the strain compartment are both square, and the first cover 16, the second cover 17 and the third cover 18 are also square. The first cover 16, the second cover 17 and the third cover 18 seal the first strain compartment 10, the second strain compartment 11 and the electronic compartment 2 respectively.

[0046] As an implementation mode, the electronic compartment 2 and the strain compartment are both regular hexagons, and the first cover 16, the second cover 17 and the third cover 18 are also regular hexagons. The first cover 16, the second cover 17 and the third cover 18 seal the first strain compartment 10, the second strain compartment 11 and the electronic compartment 2 respectively.

[0047] That is to say, the shapes of the electronic compartment 2, strain compartment and cover are not fixed, and technical personnel in this field can selectively design them according to actual needs. The utility model does not specifically limit the shapes of the electronic compartment 2, strain compartment and cover. Any shapes of the electronic compartment 2, strain compartment and cover that can achieve good force measurement and sealing of the force sensor are within the protection scope of the utility model.

[0048] Furthermore, the force sensor also includes a circuit board, which is arranged in the electronic compartment 2.

[0049] The circuit board is provided with a signal processing / transmitting circuit to process / transmit the signal measured by the resistance strain gauge 15. The circuit board can be designed according to the needs, and can be mA, V, CAN, etc.

[0050] The designs of the Wheatstone bridge, signal processing / transmission circuit, and circuit board PCB of the force sensor are all existing mature technologies, and the utility model will not elaborate on them.

[0051] Furthermore, the force sensor also includes a plurality of process holes 19 , and the plurality of process holes 19 penetrate the sensor elastic body 1 .

[0052] The process hole 19 can maintain the original shape of the part after the sensor elastomer 1 is cast and cooled, block the generation of internal stress, improve the stress distribution state of the elastomer, and minimize the deformation value of the elastomer after the workpiece is heat-treated. At the same time, the process hole 19 can play the role of a center point to help accurately position the part. When measuring or assembling a force sensor, it can improve the efficiency of the process operation and ensure the assembly accuracy accordingly.

[0053] A force sensor with lateral cable outlet applicable to a small space according to the present utility model has a lateral cable outlet. The metal lock head is changed to a protective coil, and at the same time, the height of the surface where the cable outlet hole is located is reduced to reduce the occupied space. It is applicable to an environment with a narrow installation space and a rotating installation table, and can effectively avoid the collision of the cable caused by the conventional cable lock head outlet, thereby avoiding the situation of sensor failure.

[0054] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0055] Those skilled in the art can easily understand that the present utility model includes any combination of the utility model content and the specific implementation part of the above specification and each part shown in the drawings. Due to space limitations and to make the specification concise, the various solutions formed by these combinations are not described one by one. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

[0056] Although the embodiments of the present utility model have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present utility model. Those of ordinary skill in the art can make changes, modifications, replacements, and variations to the above embodiments within the scope of the present utility model without departing from the principle and purpose of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A force sensor suitable for side-outlet in a small space, characterized in that: It comprises a sensor elastic body, on which a strain bin and an electronic bin are arranged, the strain bin is communicated with the electronic bin, one end of the sensor elastic body is provided with a wire outlet hole, the wire outlet hole is communicated with the electronic bin, and a protective coil is arranged on the wire outlet hole.

2. A force sensor for side-outlet in a small space according to claim 1, characterized in that: One end of the sensor elastic body having the outlet hole includes a first end face and a second end face, a step is provided between the first end face and the second end face, the height of the first end face is lower than the height of the second end face, and the outlet hole is located on the first end face.

3. A force sensor for side-outlet in a small space according to claim 2, characterized in that: It also includes a wire pressing clamp, which is installed on the second end surface through a fixing screw.

4. A force sensor for side-outlet in a small space according to claim 1, characterized in that: The strain bin includes a first strain bin and a second strain bin, the first strain bin and the second strain bin are respectively arranged on two opposite sides of the sensor elastic body, and the first strain bin and the second strain bin are connected through a first connecting hole.

5. A force sensor for side-outlet in a small space according to claim 4, characterized in that: It also includes a second connecting hole, and the electronic compartment and the second strain compartment are connected through the second connecting hole.

6. A force sensor for side-outlet in a small space according to claim 1, characterized in that: It also includes a third connecting hole, through which the electronic compartment and the wire outlet hole are connected.

7. A force sensor for side-outlet in a small space according to claim 4, characterized in that: The electronic bin and the strain bin are both circular, and resistance strain gauges are arranged in the first strain bin and the second strain bin.

8. The force sensor for side-outlet in a small space according to claim 4, characterized in that: It also includes a cover, which includes a first cover, a second cover and a third cover, the first cover is covered at the opening of the first strain bin, the second cover is covered at the opening of the second strain bin, and the third cover is covered at the opening of the electronic bin.

9. The force sensor for side-outlet in a small space according to claim 1, characterized in that: It also includes a circuit board, which is arranged in the electronic compartment.

10. A force sensor suitable for side-outlet in a small space according to any one of claims 1 to 9, characterized in that: It also includes a plurality of process holes, which penetrate through the sensor elastomer.

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