A strain gauge weighing sensor with joint protection structure

Abstract

The utility model discloses a strain gauge weighing sensor with a joint protection structure, which relates to the technical field of strain gauge weighing sensors. In order to solve the problem that the joint part of the existing resistance strain gauge weighing sensor is only a simple wiring structure, it is inconvenient to set up and install when the wiring is long, and it cannot be connected to the monitoring host when the wiring is short, there are great limitations, and there is a lack of effective protection structure. It includes a sensor housing, and an inductive contact terminal is arranged on the front end surface of the sensor housing, and an extension seat is arranged on one side of the sensor housing; it also includes: a positioning base, which is arranged on the outer wall of one side of the extension seat, the positioning base and the extension seat are integrally formed, and an assembly base is installed on one side of the positioning base, and an end base is installed on one side of the assembly base. The interiors of the positioning base, the assembly base and the end base are all provided with threading holes, and the threading holes are integrally formed with the positioning base, the assembly base and the end base.

Description

Technical Field

[0001] The utility model relates to the technical field of strain type weighing sensors, in particular to a strain type weighing sensor with a joint protection structure. Background Art

[0002] The strain type weighing sensor is a strain type load sensor with a cylindrical structure developed from a resistance strain gauge, which is used for engineering force measurement and weighing measurement.

[0003] For example, the application number is: 201811323158.7 (named as a resistance strain type weighing sensor), which includes an elastomer, and the two end surfaces of the elastomer are respectively fixedly connected with a supporting structure and a force-bearing structure, and the two side surfaces of the elastomer are provided with through deformation holes, and two strain cavities located inside the elastomer are provided above and below the deformation hole, and the radial section of the strain cavity is arranged in a crescent shape or a fan ring shape, and the radial section shape of the strain cavity is arranged in a coordinated manner with the direction and position of the strain cavity, and a resistance strain gauge is engraved on the inner wall of the strain cavity, and a deformation hole is opened in the radial center of the two side surfaces of the elastomer, and the radial section of the deformation hole is composed of four arcs, among which the centers of the top arc and the bottom arc that are equally arranged are both arranged directly above the top center on the radial section of the deformation hole, and the centers of the left arc and the right arc that are equally and symmetrically arranged are both arranged on the right side of the left end center and the left side of the right end center on the radial section of the deformation hole.

[0004] The connector part of the above-mentioned resistance strain type weighing sensor is only a simple wiring structure. When the wiring is long, it is inconvenient to set up and install. When the wiring is short, it cannot be connected to the monitoring host. There are great limitations and lack of effective protection structure. For this reason, we provide a strain type weighing sensor with a connector protection structure. Utility Model Content

[0005] The purpose of the utility model is to provide a strain gauge weighing sensor with a joint protection structure to solve the problem that the joint part of the existing resistance strain gauge weighing sensor proposed in the above background technology is only a simple wiring structure, which is inconvenient to set up and install when the wiring is long, and cannot be connected to the monitoring host when the wiring is short, which has great limitations and lacks an effective protection structure.

[0006] To achieve the above object, the utility model provides the following technical solutions: a strain gauge weighing sensor with a joint protection structure, comprising a sensor housing, a sensing contact terminal is arranged on the front end surface of the sensor housing, and an extension seat is arranged on one side of the sensor housing;

[0007] Also includes:

[0008] A positioning base, which is arranged on an outer wall of one side of the extension base, the positioning base and the extension base are integrally formed, and an assembly base is installed on one side of the positioning base, and an end base is installed on one side of the assembly base, and threading holes are arranged inside the positioning base, the assembly base and the end base, and the threading holes are integrally formed with the positioning base, the assembly base and the end base;

[0009] A connector wire is installed inside the threading hole, and an insulating rubber jacket is provided on the outer wall of the connector wire, the insulating rubber jacket and the connector wire are integrally formed, and a positioning jack is provided on the outer wall of the insulating rubber jacket, the positioning jack and the insulating rubber jacket are integrally formed;

[0010] The end circular groove is arranged at the two end positions of the threading hole. The end circular groove and the threading hole are integrally formed, and a magnetic suction cup is arranged inside the end circular groove. The magnetic suction cup is embedded and fixedly connected with the end circular groove.

[0011] Preferably, a limiting ring plate is installed on the outer wall of the insulating rubber sleeve, a locking rod is provided on the inner wall of the limiting ring plate, the limiting ring plate is plug-connected with the positioning socket through the locking rod, the size of the limiting ring plate is larger than the caliber of the threading hole, and the limiting ring plate is adsorbed and connected to the threading hole through a magnetic suction cup.

[0012] Preferably, threaded connecting rods and threaded connecting holes are provided at the connecting positions of the positioning base, the assembly base and the end base, and the threaded connecting holes are threadedly fixedly connected to the threaded connecting rods.

[0013] Preferably, the extension seat and the inductive contact terminal are integrally formed with the sensor housing.

[0014] Preferably, a host connector and a positioning connector are respectively provided at both ends of the connector line, and the host connector and the positioning connector are integrally formed with the connector line.

[0015] Preferably, the two limiting ring plates are of a combined structure, and the limiting ring plates are of a semicircular structure.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] The utility model connects a connector wire to a monitoring host, and a redundant portion of the connector wire is bounded inside the threading hole, eliminating the need for redundant erection and also protecting the connector wire. After the connector wire is threaded, a limit ring plate is installed on a positioning jack on the outer wall of the insulating rubber jacket through a locking rod. At the same time, the limit ring plate is adsorbed and connected to a magnetic suction cup, thereby locking and fixing the threaded connector wire, improving the stability of the connector wire protection structure and overcoming the problem that the connector portion of an existing resistance strain type weighing sensor is merely a simple wiring structure, which is inconvenient to erect and install when the wiring is long, and cannot be connected to the monitoring host when the wiring is short, thus having great limitations and lacking an effective protection structure.

[0018] According to the actual wiring needs of the strain type weighing sensor, choose to install the required number of assembly bases on the positioning base. When it is necessary to thread the wires twice, there is no need to install the assembly base. You only need to connect the positioning base to the end base. The positioning base, assembly base and end base are connected by threaded connecting rods and threaded connecting holes for screwing and fixing, so as to facilitate the assembly of the base. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the overall structure of the strain gauge weighing sensor with a joint protection structure of the utility model;

[0020] Figure 2 It is a schematic diagram of the connection structure of the positioning base, the assembly base and the end base of the utility model;

[0021] Figure 3 This is a schematic diagram of the threading hole structure of the utility model;

[0022] Figure 4 This is a schematic diagram of the installation structure of the limiting ring plate of the utility model;

[0023] In the figure: 1. sensor housing; 2. inductive contact terminal; 3. extension seat; 4. positioning base; 5. assembly base; 6. terminal base; 7. connector wire; 8. limit ring plate; 9. host connector; 10. positioning connector; 11. threaded connection hole; 12. threaded connecting rod; 13. threading hole; 14. end round groove; 15. magnet suction cup; 16. insulating rubber jacket; 17. positioning socket; 18. positioning rod. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0025] See also Figure 1-4The utility model provides an embodiment: a strain gauge weighing sensor with a joint protection structure, comprising a sensor housing 1, a sensing contact terminal 2 is arranged on the front end surface of the sensor housing 1, and an extension seat 3 is arranged on one side of the sensor housing 1;

[0026] Also includes:

[0027] A positioning base 4 is arranged on an outer wall of one side of the extension base 3. The positioning base 4 is integrally formed with the extension base 3, and an assembly base 5 is installed on one side of the positioning base 4. An end base 6 is installed on one side of the assembly base 5. The interiors of the positioning base 4, the assembly base 5 and the end base 6 are all provided with threading holes 13. The threading holes 13 are integrally formed with the positioning base 4, the assembly base 5 and the end base 6;

[0028] The connector wire 7 is installed inside the threading hole 13, and an insulating rubber jacket 16 is provided on the outer wall of the connector wire 7, and the insulating rubber jacket 16 is integrally formed with the connector wire 7. A positioning hole 17 is provided on the outer wall of the insulating rubber jacket 16, and the positioning hole 17 is integrally formed with the insulating rubber jacket 16;

[0029] The end circular groove 14 is arranged at both ends of the threading hole 13. The end circular groove 14 and the threading hole 13 are integrally formed, and a magnetic suction cup 15 is arranged inside the end circular groove 14. The magnetic suction cup 15 is embedded and fixedly connected with the end circular groove 14.

[0030] See also Figure 3 and Figure 4 A limiting ring plate 8 is installed on the outer wall of the insulating rubber sleeve 16, and a locking rod 18 is provided on the inner wall of the limiting ring plate 8. The limiting ring plate 8 is plugged and connected with the positioning socket 17 through the locking rod 18. The size of the limiting ring plate 8 is larger than the diameter of the threading hole 13. The limiting ring plate 8 is adsorbed and connected with the threading hole 13 through the magnetic suction cup 15. The limiting ring plate 8 installed on the outer wall of the insulating rubber sleeve 16 plays a role in limiting the installation of the joint wire 7.

[0031] See also Figure 2 A threaded connecting rod 12 and a threaded connecting hole 11 are provided at the connecting positions of the positioning base 4, the assembling base 5 and the end base 6. The threaded connecting hole 11 is threadedly fixedly connected with the threaded connecting rod 12. The threaded connecting rod 12 and the threaded connecting hole 11 provided at the connecting positions of the positioning base 4, the assembling base 5 and the end base 6 serve to facilitate the combined connection of the positioning base 4, the assembling base 5 and the end base 6.

[0032] See also Figure 1 The extension seat 3 and the inductive contact terminal 2 are both integrally formed with the sensor housing 1 .

[0033] See also Figure 1A host connector 9 and a positioning connector 10 are respectively provided at both ends of the connector line 7. The host connector 9 and the positioning connector 10 are integrally formed with the connector line 7. The host connector 9 and the positioning connector 10 provided at both ends of the connector line 7 facilitate the installation and connection of the connector line 7.

[0034] See also Figure 4 The two limiting ring plates 8 are a combined structure, and the limiting ring plates 8 are a semicircular structure.

[0035] Working principle: When in use, according to the actual wiring needs of the strain type weighing sensor, choose to install the required number of assembly bases 5 on the positioning base 4. When it is necessary to thread the wires twice, there is no need to install the assembly base 5. You only need to connect the positioning base 4 with the end base 6. The threaded connecting rod 12 and the threaded connecting hole 11 are connected between the positioning base 4, the assembly base 5 and the end base 6 for screwing and fixing. The connector line 7 is connected to the monitoring host. The excess part of the connector line 7 is bound inside the threading hole 13. There is no need for excess installation, and it also protects the connector line 7. After the connector line 7 is threaded, the limit ring plate 8 is installed on the positioning hole 17 on the outer wall of the insulating rubber jacket 16 through the clamping rod 18. At the same time, the limit ring plate 8 is adsorbed and connected to the magnetic suction cup 15, and then the threaded connector line 7 is clamped and fixed, which improves the stability of the protection structure of the connector line 7 and completes the use of the strain type weighing sensor with a connector protection structure.

[0036] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A strain gauge weighing sensor with a joint protection structure, comprising a sensor housing (1), a sensing contact terminal (2) being arranged on the front end surface of the sensor housing (1), and an extension seat (3) being arranged on one side of the sensor housing (1); Features: Also includes: A positioning base (4) is arranged on an outer wall of one side of the extension base (3); the positioning base (4) and the extension base (3) are integrally formed, and an assembly base (5) is installed on one side of the positioning base (4); an end base (6) is installed on one side of the assembly base (5); threading holes (13) are arranged inside the positioning base (4), the assembly base (5) and the end base (6); the threading holes (13) are integrally formed with the positioning base (4), the assembly base (5) and the end base (6); A connector wire (7) is installed inside the threading hole (13), and an insulating rubber jacket (16) is provided on the outer wall of the connector wire (7), the insulating rubber jacket (16) and the connector wire (7) are integrally formed, and a positioning plug hole (17) is provided on the outer wall of the insulating rubber jacket (16), the positioning plug hole (17) and the insulating rubber jacket (16) are integrally formed; The end circular groove (14) is arranged at both ends of the threading hole (13); the end circular groove (14) and the threading hole (13) are integrally formed; a magnetic suction cup (15) is arranged inside the end circular groove (14); the magnetic suction cup (15) is embedded and fixedly connected to the end circular groove (14).

2. The strain gauge load cell with a joint protection structure according to claim 1, characterized in that: A limit ring plate (8) is installed on the outer wall of the insulating rubber jacket (16), a locking rod (18) is provided on the inner wall of the limit ring plate (8), the limit ring plate (8) is plug-connected with the positioning plug hole (17) via the locking rod (18), the size of the limit ring plate (8) is larger than the diameter of the threading hole (13), and the limit ring plate (8) is adsorbed and connected with the threading hole (13) via a magnetic suction cup (15).

3. The strain gauge load cell with a joint protection structure according to claim 1, characterized in that: A threaded connecting rod (12) and a threaded connecting hole (11) are provided at the connection positions of the positioning base (4), the assembly base (5) and the end base (6), and the threaded connecting hole (11) is threadedly fixedly connected to the threaded connecting rod (12).

4. The strain gauge weighing sensor with a joint protection structure according to claim 1, characterized in that: The extension seat (3) and the inductive contact terminal (2) are both integrally formed with the sensor housing (1).

5. The strain gauge weighing sensor with a joint protection structure according to claim 1, characterized in that: The two ends of the connector line (7) are respectively provided with a host connector (9) and a positioning connector (10), and the host connector (9) and the positioning connector (10) are both integrally formed with the connector line (7).

6. The strain gauge weighing sensor with a joint protection structure according to claim 2, characterized in that: The two limiting ring plates (8) are of a combined structure, and the limiting ring plates (8) are of a semicircular structure.

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