Antimagnetic caliper with novel structure

Abstract

The utility model discloses an antimagnetic caliper with a novel structure. The antimagnetic caliper comprises a first caliper, a first main scale, a first vernier, a housing, a fixed grid bar, a circuit board sensor and a second caliper. One side of the circuit board sensor is provided with a fixed grid bar, and the fixed grid bar is fixedly connected to the outer wall of one side of the first main ruler. According to the utility model, the closed mechanical digital display caliper structure is designed, the circuit board sensor is fixed in the housing through screws to form a moving gate assembly, and the circuit board sensor does not need to be machined to form a boss, so that the integrity and gap stability of the circuit board sensor are ensured; certain pre-pressure is provided through the spring piece, so that the main scale is attached to the reference surface of the vernier, the reading surfaces of the main scale and the vernier are located on the same plane, the reading has no visual error, and in addition, the vernier is designed by adopting an aluminum alloy material, has complete non-magnetic conductivity, and can meet the antimagnetic requirement.

Description

Technical Field

[0001] The utility model relates to the technical field of calipers, in particular to a magnetic-proof caliper with a new structure. Background Art

[0002] A caliper is a tool used to measure physical quantities such as length, inner and outer diameters, and depth. It is widely used in various fields such as mechanical manufacturing and engineering measurement. It is mainly divided into vernier calipers and electronic digital calipers. Vernier calipers are the most common type of calipers and are mainly used to measure inner diameters, outer diameters, steps, and depths. When measuring, the integer part of the value is read from the main scale and the decimal part is read from the vernier scale. Electronic digital calipers use capacitive gratings, magnetic gratings and other measurement systems to digitally display the measured value. The length measuring tool has a commonly used resolution of 0.01mm and is characterized by high precision and easy reading.

[0003] Existing calipers have the following defects: First, the circuit board sensor in the digital caliper needs to be machined into a boss, and the integrity and gap stability of the circuit board sensor are poor; second, the reading surfaces of the main scale and the vernier scale in the vernier caliper are not on the same plane, and there is a certain visual error in the reading; third, the steel material is processed by magnetic suction grinding and has a certain magnetism. The anti-magnetic caliper made of stainless steel will also produce weak magnetism after machining, which has a certain impact on the use of the caliper. Utility Model Content

[0004] The utility model aims to provide a new structure anti-magnetic caliper to solve the problems raised in the above background technology.

[0005] In order to solve the above technical problems, the utility model provides the following technical solutions: a new structure anti-magnetic caliper, including a first caliper, a first main scale and a second caliper, the first caliper including a first main scale, a cover shell is provided on the first main scale, a first vernier scale is fixedly connected inside the cover shell, and the first vernier scale is slidably connected to the first main scale, a first spring sheet is provided on one side outer wall of the first vernier scale, a circuit board sensor is fixedly connected to one side inner wall of the cover shell, a fixed grid bar is provided on one side of the circuit board sensor, and the fixed grid bar is fixedly connected to one side outer wall of the first main scale.

[0006] As a further technical solution of the utility model, a display screen and buttons are arranged on an outer wall of one side of the cover shell.

[0007] As a further technical solution of the utility model, a first screw is sleeved on the circuit board sensor, and the other end of the first screw is threadedly connected to the inner wall of the cover shell.

[0008] As a further technical solution of the utility model, a second screw is sleeved on the outer wall of the first vernier, and the other end of the second screw is threadedly connected to the cover shell.

[0009] As a further technical solution of the utility model, the second caliper includes a second main scale, a second vernier scale is sleeved on the second main scale, and a second spring sheet and a third spring sheet are arranged on the inner wall of the second vernier scale.

[0010] As a further technical solution of the present utility model, a first scale is provided on an outer wall of one side of the second main scale.

[0011] As a further technical solution of the present invention, a second scale is provided on an outer wall of one side of the second vernier.

[0012] Compared with the prior art, the beneficial effects achieved by the utility model are as follows: the utility model is designed with a closed mechanical digital caliper structure, the circuit board sensor is fixed in the cover shell by screws to form a moving grid assembly, and the circuit board sensor does not need to be machined to form a boss, thereby ensuring the integrity and gap stability of the circuit board sensor, and a vernier caliper with a closed cavity structure is designed, and a certain pre-pressure is provided by a spring sheet, so that the main scale fits the reference surface of the vernier scale, the reading surfaces of the main scale and the vernier scale are on the same plane, and there is no visual error in the reading. In addition, the utility model is designed with aluminum alloy material, has complete non-magnetic conductivity, and can meet the anti-magnetic requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0014] Figure 1 It is a front view structural schematic diagram of a first caliper of the utility model;

[0015] Figure 2 It is a schematic diagram of the top view structure of the first caliper of the utility model;

[0016] Figure 3 It is a side view cross-sectional structural schematic diagram of a first caliper of the utility model;

[0017] Figure 4 It is a front view structural schematic diagram of the second caliper of the utility model;

[0018] Figure 5 It is a schematic diagram of the top view of the second caliper of the utility model;

[0019] Figure 6 It is a side structural schematic diagram of the second caliper of the utility model;

[0020] Figure 7 It is a side view cross-sectional structural schematic diagram of the second caliper of the utility model.

[0021] In the figure: 1, first caliper; 11, first main scale; 12, first vernier scale; 13, first spring leaf; 14, cover; 15, first screw; 16, fixed grid bar; 17, circuit board sensor; 18, display screen; 19, button; 110, second screw; 2, second caliper; 21, second main scale; 22, second vernier scale; 23, second spring leaf; 24, third spring leaf; 25, first scale; 26, second scale. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figure 1-7The utility model provides an embodiment: a new structure anti-magnetic caliper, including a first caliper 1, a first main scale 11 and a second caliper 2, the first caliper 1 includes a first main scale 11, a cover 14 is provided on the first main scale 11, a first vernier scale 12 is fixedly connected in the cover 14, and the first vernier scale 12 is slidably connected to the first main scale 11, a first spring sheet 13 is provided on one side outer wall of the first vernier scale 12, a circuit board sensor 17 is fixedly connected to one side inner wall of the cover 14, a fixed grid bar 16 is provided on one side of the circuit board sensor 17, and the fixed grid bar 16 is fixedly connected to one side outer wall of the first main scale 11; a display screen 18 and a button 19 are provided on one side outer wall of the cover 14, the display screen 18 is used to display readings, and the button 19 is used to operate switches, zeroing, metric-inch conversion and other functions; the circuit board sensor 17 is sleeved with a first spring sheet 13. A screw 15, and the other end of the first screw 15 is threadedly connected to the inner wall of the cover 14, and the first screw 15 is used to fix the circuit board sensor 17; a second screw 110 is sleeved on the outer wall of the first vernier 12, and the other end of the second screw 110 is threadedly connected to the cover 14, and the second screw 110 is used to fix the first vernier 12; the second caliper 2 includes a second main scale 21, a second vernier 22 is sleeved on the second main scale 21, and a second spring sheet 23 and a third spring sheet 24 are arranged on the inner wall of the second vernier 22, and the second spring sheet 23 and the third spring sheet 24 are used to provide pre-pressure so that the second main scale 21 fits the reference surface of the second vernier 22; a first scale 25 is arranged on the outer wall of one side of the second main scale 21; a second scale 26 is arranged on the outer wall of one side of the second vernier 22, and the first scale 25 and the second scale 26 are used for reading.

[0024] Working principle: When the utility model is used, the first main scale 11 and the first vernier scale 12 in the first caliper 1 form a closed mechanical scale structure. Under the action of the first spring sheet 13, the lower side of the first main scale 11 is always in contact with the reference surface of the first vernier scale 12, forming a stable guiding mechanism during the sliding measurement process. The circuit board sensor 17 is fixed to the cover 14 by the first screw 15 to form a moving grid assembly. The fixed grid bar 16 is bonded to the mounting groove on the first main scale 11 by the adhesive material and is lower than the outer surface plane of the first main scale 11, ensuring that the fixed grid bar 16 will not contact the circuit board sensor 17 during the sliding process of the first vernier scale 12, and always maintain a constant air gap with the circuit board sensor 17. The first vernier scale 12 is connected to the cover 14 by the second screw 110. When in use, the first The main scale 11 and the first vernier scale 12 move relative to each other, the fixed grid bar 16 and the circuit board sensor 17 produce relative displacement, the capacitance value between the two changes, the circuit board sensor 17 converts it into a digital signal, and displays it through the display screen 18, the button 19 is used to operate the switch, zeroing, metric-inch conversion and other functions, the second main scale 21 and the second vernier scale 22 in the second caliper 2 are made of aluminum alloy and designed as a closed cavity structure, the reading surfaces of the second main scale 21 and the second vernier scale 22 are on the same plane, and there is no visual error in the reading, the second spring sheet 23 and the third spring sheet 24 form a certain pre-pressure between the second main scale 21 and the second vernier scale 22, so that the second main scale 21 fits the reference surface of the second vernier scale 22, and the reading is performed through the first scale 25 and the second scale 26 when in use.

[0025] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0026] The device embodiments described above are merely illustrative, wherein the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the scheme of this embodiment. Ordinary technicians in this field can understand and implement it without paying creative labor.

[0027] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model 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 various embodiments of the utility model.

Claims

1. A novel anti-magnetic caliper, comprising a first caliper (1), a first main scale (11) and a second caliper (2), characterized in that: The first caliper (1) comprises a first main scale (11), a cover (14) is arranged on the first main scale (11), a first vernier scale (12) is fixedly connected inside the cover (14), and the first vernier scale (12) is slidably connected to the first main scale (11), a first spring sheet (13) is arranged on one side outer wall of the first vernier scale (12), a circuit board sensor (17) is fixedly connected to one side inner wall of the cover (14), a fixed grid bar (16) is arranged on one side of the circuit board sensor (17), and the fixed grid bar (16) is fixedly connected to one side outer wall of the first main scale (11).

2. The new structure anti-magnetic caliper according to claim 1 is characterized in that: A display screen (18) and a button (19) are provided on one side outer wall of the cover shell (14).

3. The new structure anti-magnetic caliper according to claim 1 is characterized in that: A first screw (15) is sleeved on the circuit board sensor (17), and the other end of the first screw (15) is threadedly connected to the inner wall of the cover shell (14).

4. The new structure anti-magnetic caliper according to claim 1 is characterized in that: A second screw (110) is sleeved on the outer wall of the first vernier (12), and the other end of the second screw (110) is threadedly connected to the cover shell (14).

5. The new structure anti-magnetic caliper according to claim 1 is characterized in that: The second caliper (2) comprises a second main scale (21), a second vernier scale (22) is sleeved on the second main scale (21), and a second spring sheet (23) and a third spring sheet (24) are arranged on the inner wall of the second vernier scale (22).

6. The new structure anti-magnetic caliper according to claim 5 is characterized in that: A first scale (25) is provided on an outer wall of one side of the second main scale (21).

7. The new structure anti-magnetic caliper according to claim 5 is characterized in that: A second scale (26) is provided on one side outer wall of the second vernier (22).

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