阅读说明：本技术 一种便于单手操作的游标卡尺 (Vernier caliper convenient to one-hand operation ) 是由 赵莹 费思凯 吴恩泽 于 2020-06-06 设计创作，主要内容包括：本发明提供了一种便于单手操作的游标卡尺,属于测量工具技术领域,旨在解决现有的游标卡尺进行教学演示时,读数固定较为麻烦,影响读数的精确度；包括主尺、游标尺和深度尺,所述主尺的上端和下端分别固定设有微型齿条；所述游标尺上矩形通槽,所述矩形通槽内转动设有定位爪；所述定位爪包括弧形拨片和与所述弧形拨片一体成型的圆弧板；所述游标尺上固定设有两个连接耳,两个所述连接耳分别位于所述矩形通槽两侧的游标尺上；所述连接耳上固定设有连接杆,所述弧形拨片转动设置在所述连接杆上；本发明的设计,进行测量操作时,单手即可完成读数固定,操作方便且不会影响读数的精确度,结构简单便于推广使用。(The invention provides a vernier caliper convenient to operate by one hand, belongs to the technical field of measuring tools, and aims to solve the problems that reading is troublesome to fix and the reading accuracy is influenced when the existing vernier caliper is used for teaching demonstration; the vernier caliper comprises a main ruler, a vernier scale and a depth ruler, wherein the upper end and the lower end of the main ruler are respectively and fixedly provided with a micro rack; a rectangular through groove is formed in the vernier scale, and a positioning claw is rotationally arranged in the rectangular through groove; the positioning claw comprises an arc shifting piece and an arc plate which is integrally formed with the arc shifting piece; two connecting lugs are fixedly arranged on the vernier scale and are respectively positioned on the vernier scale on two sides of the rectangular through groove; a connecting rod is fixedly arranged on the connecting lug, and the arc-shaped shifting piece is rotatably arranged on the connecting rod; according to the design of the invention, when measurement operation is carried out, reading fixation can be completed by one hand, the operation is convenient, the reading accuracy is not influenced, the structure is simple, and the popularization and the use are convenient.)

1. A vernier caliper convenient for one-hand operation comprises a main ruler, a vernier and a depth gauge, and is characterized in that the upper end and the lower end of the main ruler are respectively fixedly provided with a micro rack; a rectangular through groove is formed in the vernier scale, and a positioning claw is rotationally arranged in the rectangular through groove; the positioning claw comprises an arc shifting piece and an arc plate which is integrally formed with the arc shifting piece; two connecting lugs are fixedly arranged on the vernier scale and are respectively positioned on the vernier scale on two sides of the rectangular through groove; a connecting rod is fixedly arranged on the connecting lug, and the arc-shaped shifting piece is rotatably arranged on the connecting rod; a torsion spring is fixedly sleeved on the connecting rod, and the other end of the torsion spring is fixedly connected with the arc-shaped shifting piece; an adjusting device is fixedly arranged on the vernier scale, and an adjusting rack matched with the adjusting device is fixedly arranged on the main scale.

2. The vernier caliper convenient for one-handed operation as claimed in claim 1, wherein a groove matching with the finger web radian is formed in the middle of the circular arc plate; and the arc plate is fixedly provided with an anti-slip pad.

3. The vernier caliper convenient for one-handed operation as claimed in claim 1, wherein said adjusting means comprises a fixing base, a connecting shaft, a roller and a positioning rod; the fixed seat is fixedly arranged on the vernier; two fixing seats are arranged, and two ends of the connecting shaft are respectively fixedly arranged on the two fixing seats; the roller is rotationally arranged on the positioning rod; the fixing seat is provided with a cylindrical cavity for accommodating the positioning rod, and the positioning rod is arranged in the cylindrical cavity in a sliding manner.

4. A vernier caliper facilitating one-handed operation as claimed in claim 3, wherein said roller is provided with teeth engaging with said adjusting rack; the front end of the positioning rod is hemispherical; a plurality of hemispherical grooves matched with the positioning rods are formed in the side surface of the roller; and a spring is fixedly arranged in the cylindrical cavity, and one end of the spring is fixedly connected with the rear end of the positioning rod.

Technical Field

The invention relates to the technical field of measuring tools, in particular to a vernier caliper convenient to operate by one hand.

Background

At present, a vernier caliper is frequently used in a teaching demonstration process as a commonly used measuring tool. When the existing vernier caliper is used for measurement, the vernier caliper is usually held by one hand, an object to be measured is held by the other hand, when the reading position is required to be fixed after measurement is finished, the object to be measured needs to be put down, the vernier caliper is held by one hand, and the fastening screw on the vernier is screwed by the other hand to finish the fixation, so that the operation is troublesome; the reading is changed because of the hand trembling often in the fixed process, the accuracy of measurement is influenced, and the use experience is not good.

Disclosure of Invention

Aiming at the technical defects, the invention aims to provide the vernier caliper convenient to operate by one hand, so that reading fixation can be completed by one hand when measurement operation is performed, the vernier caliper is convenient to operate, the reading accuracy cannot be influenced, and the vernier caliper is simple in structure and convenient to popularize and use.

In order to solve the technical problems, the invention adopts the following technical scheme:

a vernier caliper convenient for one-hand operation comprises a main ruler, a vernier and a depth gauge, and is characterized in that the upper end and the lower end of the main ruler are respectively fixedly provided with a micro rack; a rectangular through groove is formed in the vernier scale, and a positioning claw is rotationally arranged in the rectangular through groove; the positioning claw comprises an arc shifting piece and an arc plate which is integrally formed with the arc shifting piece; two connecting lugs are fixedly arranged on the vernier scale and are respectively positioned on the vernier scale on two sides of the rectangular through groove; a connecting rod is fixedly arranged on the connecting lug, and the arc-shaped shifting piece is rotatably arranged on the connecting rod; a torsion spring is fixedly sleeved on the connecting rod, and the other end of the torsion spring is fixedly connected with the arc-shaped shifting piece; an adjusting device is fixedly arranged on the vernier scale, and an adjusting rack matched with the adjusting device is fixedly arranged on the main scale.

Preferably, the middle part of the circular arc plate is provided with a groove matched with the finger abdomen radian; and the arc plate is fixedly provided with an anti-slip pad.

Preferably, the adjusting device comprises a fixed seat, a connecting shaft, a roller and a positioning rod; the fixed seat is fixedly arranged on the vernier; two fixing seats are arranged, and two ends of the connecting shaft are respectively fixedly arranged on the two fixing seats; the roller is rotationally arranged on the positioning rod; the fixing seat is provided with a cylindrical cavity for accommodating the positioning rod, and the positioning rod is arranged in the cylindrical cavity in a sliding manner.

Preferably, the roller is provided with teeth meshed with the adjusting rack; the front end of the positioning rod is hemispherical; a plurality of hemispherical grooves matched with the positioning rods are formed in the side surface of the roller; and a spring is fixedly arranged in the cylindrical cavity, and one end of the spring is fixedly connected with the rear end of the positioning rod.

The invention has the beneficial effects that: according to the design of the invention, when measurement operation is carried out, reading fixation can be completed by one hand, the operation is convenient, the reading accuracy is not influenced, the structure is simple, and the popularization and the use are convenient.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a vernier caliper convenient for one-hand operation according to an embodiment of the present invention;

FIG. 2 is a schematic cross-sectional view of FIG. 1;

FIG. 3 is an enlarged view of a portion of FIG. 2 at A;

fig. 4 is a partially enlarged view of fig. 1 at B.

Description of reference numerals:

the scale comprises a micro rack 1, a depth gauge 2, a main scale 3, a positioning claw 4, a vernier scale 5, a connecting rod 6, a connecting lug 7, an arc-shaped shifting piece 8 and an arc plate 9.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that in the description of the present invention, the terms "in", "upper", "lower", "lateral", "inner", etc. indicate directions or positional relationships based on those shown in the drawings, which are merely for convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Furthermore, it should be noted that, in the description of the present invention, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; may be a mechanical connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

As shown in fig. 1 to 4, a vernier caliper convenient for one-hand operation comprises a main scale 3, a vernier scale 5 and a depth gauge 2, wherein the upper end and the lower end of the main scale 3 are respectively and fixedly provided with a micro rack 1; a rectangular through groove is formed in the vernier 5, and a positioning claw 4 is rotationally arranged in the rectangular through groove; the positioning claw 4 comprises an arc shifting piece 8 and an arc plate 9 which is integrally formed with the arc shifting piece 8; two connecting lugs 7 are fixedly arranged on the vernier 5, and the two connecting lugs 7 are respectively positioned on the vernier 5 on two sides of the rectangular through groove; a connecting rod 6 is fixedly arranged on the connecting lug 7, and an arc-shaped shifting piece 8 is rotatably arranged on the connecting rod 6; a torsion spring is fixedly sleeved on the connecting rod 6, the other end of the torsion spring is fixedly connected with the arc-shaped shifting piece 8, and the front end of the arc-shaped shifting piece 8 is pressed towards the direction of the micro rack 1 under the natural state of the torsion spring, so that the front end of the arc-shaped shifting piece 8 is clamped with the teeth of the micro rack 1, and the position of the vernier scale 5 on the main scale 3 is further fixed; the arc shifting piece 8 can rotate around the connecting rod 6 by pressing the arc plate 9 with fingers, so that the arc shifting piece 8 is separated from the micro rack 1, and the vernier 5 can freely slide on the main scale 3; an adjusting device is fixedly arranged on the vernier 5, and an adjusting rack 10 matched with the adjusting device is fixedly arranged on the main scale 3; the adjusting device comprises a fixed seat 12, a connecting shaft 13, a roller 11 and a positioning rod 14; the fixed seat 12 is fixedly arranged on the vernier 5; two fixing seats 12 are arranged, and two ends of the connecting shaft 13 are respectively fixed on the two fixing seats 12; the roller 11 is rotatably arranged on the positioning rod 14; the fixing seat 12 is provided with a cylindrical cavity for accommodating the positioning rod 14, and the positioning rod 14 is arranged in the cylindrical cavity in a sliding manner; the roller 11 is provided with teeth meshed with the adjusting rack 10; the front end of the positioning rod 14 is hemispherical; the side surface of the roller 11 is provided with a plurality of hemispherical grooves matched with the positioning rods 14, and the hemispherical grooves are distributed on the side surface of the roller in a surrounding manner; a spring is fixedly arranged in the cylindrical cavity, and one end of the spring is fixedly connected with the rear end of the positioning rod 14; the index finger pushes the roller 11 to rotate, so that the main scale 3 can be driven to slide back and forth in the vernier 5, and the relative position of the vernier 5 and the main scale 3 can be adjusted by one hand; the positioning rod 14 is pushed outwards in a natural state of the spring, so that the positioning rod 14 is clamped in the hemispherical groove, and the rotation angle of the roller 11 is positioned.

Further, the middle part of the circular arc plate 9 is provided with a groove matched with the radian of the finger abdomen; the arc plate 9 is fixedly provided with a non-slip pad which can prevent fingers from slipping when pressing the finger pulp on the arc plate 9 to apply forward or backward force.

When in use, the positioning claw 4 is tightly clamped with the micro rack 1 in a natural state, and the vernier 5 is fixed on the depth gauge 2; when in use, the thumb and the middle finger respectively pinch the two arc plates 9 and press inwards, the index finger stirs the roller, and the position of the main ruler in the vernier scale is adjusted; when the position of the vernier 5 needs to be fixed during measurement, the locking and positioning can be completed only by loosening the thumb or the middle finger, so that the teaching and displaying are facilitated.

According to the design of the invention, when measurement operation is carried out, reading fixation can be completed by one hand, the operation is convenient, the reading accuracy is not influenced, the structure is simple, and the popularization and the use are convenient.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.