Elastic body

Abstract

The utility model discloses an elastic body, which relates to the elastic body technology, and adopts the technical scheme that the elastic body comprises a deformation beam and a mounting seat which are integrally formed, a circular groove is formed in the deformation beam, a waist-shaped hole is formed between the deformation beam and the mounting seat, and two circular holes are formed in the deformation beam and the mounting seat; a threaded hole communicating with the lower side wall of the kidney-shaped hole is formed in the bottom face of the mounting base. According to the elastic body, the deformation beam and the mounting base are integrally formed, through holes for bolts to penetrate through can be omitted from being formed in the deformation beam, the length of the deformation beam and the length of the mounting base can be reduced at the same time, the elastic body has good applicability in the environment with a small mounting space, and meanwhile the elastic body is convenient to install. The connection strength of the deformation beam and the mounting base can be well guaranteed, the possibility of internal stress concentration of the deformation beam during deformation can be reduced through the arrangement of the round holes, and the possibility of fracture of the deformation beam is reduced.

Description

Technical Field

[0001] The utility model relates to elastomer technology, and more particularly to an elastomer. Background Art

[0002] A force sensor is a weighing sensor used to sense weight changes. A bridge-type force sensor includes an elastomer and a strain gauge mounted on the elastomer. The elastomer is usually composed of two components: a deformation beam and a mounting base. A circular groove for placing the strain gauge is provided on the side wall of the deformation beam, and a through hole is provided on the top surface of the deformation beam, which is fixed to the mounting base by bolts passing through the through hole.

[0003] In order to avoid the through hole affecting the circular groove, a certain distance is maintained between the axis of the through hole and the axis of the circular groove, which increases the overall length of the elastomer and makes the force sensor made of this elastomer less applicable to some use environments with smaller installation space.

[0004] Therefore, new solutions need to be proposed to solve this problem. Utility Model Content

[0005] In view of the shortcomings of the prior art, the purpose of the present invention is to provide an elastomer.

[0006] The above technical purpose of the present utility model is achieved through the following technical solutions: an elastomer, including an integrally formed deformable beam and a mounting seat, two circular grooves are provided on the two opposite side walls of the deformable beam, a waist-shaped hole that runs through the width of the elastomer is provided between the deformable beam and the mounting seat, two circular holes are provided on the deformable beam and the mounting seat, the two circular holes are respectively connected to the left and right side walls of the waist-shaped hole, the diameter of the circular hole is larger than the width of the waist-shaped hole, and the bottom surface of the mounting seat is provided with a threaded hole that connects to the lower side wall of the waist-shaped hole.

[0007] The utility model is further configured as follows: the mounting seat comprises a small seat and a large seat fixedly connected to the deformation beam, and the small seat is located directly below the large seat.

[0008] The present invention is further configured as follows: the length of the small seat is half of the length of the large seat, and the width of the small seat is equal to the width of the large seat.

[0009] The utility model is further configured such that the distance between two adjacent circular grooves on the same side of the deformable beam is equal to the length of the small seat.

[0010] The utility model is further configured as follows: the sharp edge of the connection between the inner wall of the circular hole and the inner wall of the waist-shaped hole is blunted.

[0011] The utility model is further configured as follows: the elastic body is made of 40Cr material.

[0012] In summary, the utility model has the following beneficial effects: a waist-shaped hole is opened on the blank of the elastomer through the wire cutting process, so that the deformable beam and the mounting seat are formed on the upper and lower sides of the waist-shaped hole. Compared with the deformation beam and the mounting seat being connected to each other by bolts, this arrangement has higher connectivity through the deformation beam and the mounting seat integrally formed on the blank. When installing the elastomer, the mounting seat can be directly placed on the mounting component, and then the bolt is passed through the mounting component and screwed into the threaded hole of the mounting seat to ensure that the end of the bolt will not be exposed in the waist-shaped hole. At this point, the installation of the elastomer is completed, and there is no need to use bolts to connect the deformation beam and the mounting seat, eliminating the need for Opening a through hole on the deformable beam for the bolt to pass through can simultaneously reduce the length of the deformable beam and the mounting seat, so that the elastomer can also have better applicability in an environment with a small installation space. When the deformable beam is deformed under pressure, the setting of the waist-shaped hole can provide the deformable beam with a better deformation space, and the circular hole connected to the left and right side walls of the waist-shaped hole replaces the original two semicircular side walls of the waist-shaped hole with the superior arc-shaped inner wall of the circular hole. When the deformable beam is deformed under pressure, the internal stress of the material of the deformable beam can be better dispersed in the superior arc-shaped inner wall of the circular hole, reducing the possibility of the deformable beam breaking due to internal stress concentration. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural diagram of the utility model;

[0014] Figure 2 It is a partial cross-sectional view of the front view of the utility model;

[0015] Figure 3 It is a bottom view of the utility model;

[0016] Figure 4 It is a cross-sectional view of the present utility model.

[0017] In the figure: 1. Deformable beam; 2. Mounting seat; 21. Small seat; 22. Large seat; 3. Circular groove; 4. Waist-shaped hole; 5. Threaded hole; 6. Circular hole. DETAILED DESCRIPTION

[0018] The present invention will be described in detail below with reference to the accompanying drawings and embodiments.

[0019] An elastomer comprises an integrally formed deformable beam 1 and a mounting seat 2, two circular grooves 3 are provided on the two opposite side walls of the deformable beam 1, a waist-shaped hole 4 that runs through the width of the elastomer is provided between the deformable beam 1 and the mounting seat 2, and the length of the waist-shaped hole 4 is arranged along the length direction of the deformable beam 1, and two circular holes 6 are provided on the deformable beam 1 and the mounting seat 2, and the two circular holes 6 are respectively connected to the left and right side walls of the waist-shaped hole 4, and the diameter of the circular hole 6 is greater than the width of the waist-shaped hole 4, and a threaded hole 5 that connects to the lower side wall of the waist-shaped hole 4 is provided on the bottom surface of the mounting seat 2. Specifically, a waist-shaped hole 4 is provided on the blank of the elastomer through a wire cutting process, so that the deformable beam 1 and the mounting seat 2 are formed on the upper and lower sides of the waist-shaped hole 4. Compared with the deformable beam 1 and the mounting seat 2 being connected to each other by bolts, this arrangement has higher connectivity by integrally forming the deformable beam 1 and the mounting seat 2 on the blank. When installing the elastomer, the mounting seat 2 can be directly placed on the mounting part The bolt is then passed through the mounting component and screwed into the threaded hole 5 of the mounting base 2, ensuring that the end of the bolt will not be exposed in the waist-shaped hole 4. At this point, the installation of the elastomer is completed. There is no need to use bolts to connect the deformable beam 1 and the mounting base 2, and there is no need to open a through hole on the deformable beam 1 for the bolt to pass through. The length of the deformable beam 1 and the mounting base 2 can be reduced at the same time, so that the elastomer can have better applicability in an environment with a smaller installation space. When the deformable beam 1 is deformed under pressure, the setting of the waist-shaped hole 4 can provide the deformable beam 1 with a better deformation space, and the circular hole 6 connected to the left and right side walls of the waist-shaped hole 4 replaces the original two semicircular side walls of the waist-shaped hole 4 with the superior arc-shaped inner wall of the circular hole 6. When the deformable beam 1 is deformed under pressure, the internal stress of the material of the deformable beam 1 can be better dispersed in the superior arc-shaped inner wall of the circular hole 6, reducing the possibility of the deformable beam 1 breaking due to internal stress concentration.

[0020] The mounting base 2 includes a small base 21 and a large base 22 fixedly connected to the deformable beam 1. The small base 21 is located directly below the large base 22. Specifically, a portion of the mounting base 2 away from the deformable beam 1 is processed by a milling cutter to form a small base 21, and the remaining portion of the mounting base 2 that has not been processed by the milling cutter becomes the large base 22. When the mounting base 2 is installed, the small base 21 directly contacts the mounting component. When the deformable beam 1 is deformed under pressure, the pressure is transmitted to the mounting base 2 through the deformable beam 1. Since part of the large base 22 does not conflict with the mounting component and is suspended, the large base 22 can also produce a certain deformation at its suspended position. Compared with the case where the small base 21 is not provided and the bottom surface of the mounting base 2 is completely fitted with the mounting component, the deformation of the large base 22 can alleviate the deformation degree of the deformable beam 1, so that the elastic body can withstand greater pressure without changing the occupied space, thereby effectively improving the measuring range of the elastic body. The length of the small base 21 is half of the length of the large base 22, and the width of the small base 21 is about The width of the large seat 22 is equal. This setting makes the small seat 21 have a sufficiently large contact area with the installation component, which can reduce the stress of the small seat 21 on the surface of the installation component when the elastomer is under pressure, and can better protect the surface of the installation component. The distance between the two adjacent circular grooves 3 on the same side of the deformable beam 1 is equal to the length of the small seat 21. This setting can reduce the influence of the large seat 22 on the strain gauge in the circular groove 3 when it is deformed in the suspended position, and improve the measurement accuracy of the force sensor made using this elastomer. The sharp edge of the connection between the inner wall of the circular hole 6 and the inner wall of the waist-shaped hole 4 is blunted. This setting makes the connection between the inner wall of the circular hole 6 and the inner wall of the waist-shaped hole 4 in an arc shape, which can further reduce the internal stress concentration at the connection between the inner wall of the circular hole 6 and the inner wall of the waist-shaped hole 4 when the deformable beam 1 is under pressure and deformed, and improve the toughness of the deformable beam 1. The elastomer is made of 40Cr material. 40Cr material has good toughness, which can better ensure the toughness of the elastomer made of this material, so that the elastomer can return to its original shape in time after being compressed.

[0021] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiment. All technical solutions based on the concept of the present invention are within the scope of protection of the present invention. It should be noted that for those skilled in the art, certain improvements and modifications that do not depart from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. An elastomer, characterized in that: The invention comprises an integrally formed deformable beam (1) and a mounting seat (2), wherein two circular grooves (3) are provided on two opposite side walls of the deformable beam (1), a waist-shaped hole (4) penetrating the width of the elastic body is provided between the deformable beam (1) and the mounting seat (2), two circular holes (6) are provided on the deformable beam (1) and the mounting seat (2), the two circular holes (6) are respectively connected to the left and right side walls of the waist-shaped hole (4), the diameter of the circular hole (6) is larger than the width of the waist-shaped hole (4), and a threaded hole (5) connected to the lower side wall of the waist-shaped hole (4) is provided on the bottom surface of the mounting seat (2).

2. The elastic body according to claim 1, characterized in that: The mounting seat (2) comprises a small seat (21) and a large seat (22) fixedly connected to the deformable beam (1), wherein the small seat (21) is located directly below the large seat (22).

3. The elastic body according to claim 2, characterized in that: The length of the small seat (21) is half the length of the large seat (22), and the width of the small seat (21) is equal to the width of the large seat (22).

4. The elastic body according to claim 3, characterized in that: The distance between two adjacent circular grooves (3) on the same side of the deformable beam (1) is equal to the length of the small seat (21).

5. The elastic body according to claim 4, characterized in that: The sharp edge at the connection between the inner wall of the circular hole (6) and the inner wall of the waist-shaped hole (4) is blunted.

6. The elastic body according to claim 1, characterized in that: The elastic body is made of 40Cr material.

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