CN219757131U - Telescopic vernier caliper - Google Patents

Abstract

The utility model discloses a telescopic vernier caliper, which comprises a main scale, a pair of inner measuring claws and a pair of outer measuring claws, wherein the main scale is provided with the vernier scale in a sliding way, the inner measuring claws are symmetrically arranged at the tops of the main scale and the vernier scale respectively, the outer measuring claws are symmetrically arranged at the bottoms of the main scale and the vernier scale respectively, a cavity is formed in each outer measuring claw, an extension mechanism is arranged in each cavity, the extension mechanism comprises an extension claw for extending the length of each outer measuring claw, the vernier scale is provided with an amplifying convex mirror, one end, far away from the inner measuring claw, of the main scale is provided with a placing block.

Description

Telescopic vernier caliper

Technical Field

The utility model relates to the technical field of measuring tools, in particular to a telescopic vernier caliper.

Background

The vernier caliper is a tool for measuring length commonly used in industry, and consists of a ruler body and a vernier capable of sliding on the ruler body, wherein a spring piece is arranged between the vernier and the ruler body, the vernier is tightly abutted against the ruler body by utilizing the elasticity of the spring piece, the ruler body and the vernier are both provided with measuring claws, the width of a groove, the inner diameter of a pipe and the like can be measured by utilizing the inner measuring claws, the thickness of a part, the outer diameter of the pipe and the like can be measured by utilizing the outer measuring claws, and in engineering design, the vernier caliper is often used in the industry with more accurate measurement data in particular; but current slide caliper is when using, the corresponding line to looking over free marking and main scale is more difficult, inconvenient to observe the scale, and the length of the outer measuring jaw of current slide caliper is fixed, can't stretch out and draw back, when measuring the part that the diameter is slightly big, the condition that the outer measuring jaw is difficult to the effectual article of waiting to measure because of the length that blocks sometimes can appear, and current slide caliper can lead to the degree of depth chi to appear the condition of shake in the measurement process because the manual holding of people when using the degree of depth chi makes the inaccurate problem of final measurement.

For this purpose, we have devised a telescopic vernier caliper.

Disclosure of Invention

The utility model aims to solve the problems that when the conventional vernier caliper is used, corresponding lines of a free line and a main scale are difficult to view, scales are inconvenient to observe, the length of an outer measuring claw of the conventional vernier caliper is fixed and cannot stretch, when a part with a slightly large diameter is measured, the condition that the outer measuring claw is difficult to effectively clamp an object to be measured due to insufficient length sometimes occurs, and when the conventional vernier caliper is used, the conventional vernier caliper can shake in the measuring process due to manual holding of a person, so that final measurement is inaccurate.

In order to achieve the above purpose, the present utility model adopts the following technical scheme:

the utility model provides a telescopic vernier caliper, includes main scale, a pair of interior measurement claw and a pair of outer measurement claw, it has the vernier scale to slide on the main scale, a pair of interior measurement claw symmetry respectively is established at main scale and vernier scale top, a pair of outer measurement claw symmetry respectively is established in main scale and vernier scale bottom, a pair of all be equipped with the cavity in the outer measurement claw, be equipped with extension mechanism in the cavity, extension mechanism is including the extension claw that is used for prolonging outer measurement claw length, be equipped with the magnifying glass on the vernier scale, the one end that the interior measurement claw was kept away from to the main scale is equipped with places the piece, fixedly connected with depth gauge on the vernier scale.

Preferably, a clamping block is arranged in the cavity of the outer measuring claw, a clamping groove is formed in the extending claw, a pushing groove is formed in the outer measuring claw, and a plurality of clamping holes are formed in the side wall of the pushing groove.

Preferably, the extension mechanism further comprises a chute, a clamping rod and a spring, wherein the chute is arranged on the extension claw, the clamping rod moves in the chute, one end of the spring is fixedly connected with the inner wall of the chute, and the other end of the spring is fixedly connected with the clamping rod.

Preferably, a sliding groove is formed in the main scale, and the depth scale moves along with the vernier in the sliding groove.

Preferably, the vernier and the main scale are provided with scales which are convenient for staff to measure and read, the contact surface between the vernier and the top of the main scale is provided with a pressing strip, and the vernier is rotationally connected with a fastening screw.

Preferably, connecting rods are respectively arranged on two sides of the vernier, one end, far away from the vernier, of the connecting rod is rotationally connected with a roller, and the roller is in rolling contact with the bottom end of the main scale.

The beneficial effects of the utility model are as follows:

1. according to the vernier caliper, the magnifying convex lens is arranged on the vernier, so that a measurer can observe measured data conveniently, the roller is connected to the side wall of the main scale in a rolling way through the connecting rod in a rotating way, and when the roller is rolled, the connecting rod drives the vernier to move on the main scale, friction between the vernier and the main scale is reduced, and the service life of the vernier caliper is prolonged.

2. According to the utility model, the extension claw is arranged in the outer measuring claw, the outer measuring claw is connected with the extension claw in a sliding manner through the clamping block, when the clamping rod is pushed to move downwards along the pushing groove, the clamping rod drives the extension claw to move in the outer measuring claw, so that the length of the outer measuring claw is prolonged, and when a part with a slightly larger diameter is measured, the prolonged outer measuring claw effectively clamps an object to be measured.

3. According to the utility model, the placement block is arranged at one end of the main ruler, which is far away from the inner measuring claw, so that the vertical direction of the vernier caliper is kept vertical through the placement block when the depth ruler is used, and the phenomenon that the final measurement is inaccurate due to the fact that the shaking of the depth ruler in the measuring process can occur due to manual holding of a person is prevented.

Drawings

Fig. 1 is a schematic structural diagram of a telescopic vernier caliper according to the present utility model;

fig. 2 is a front view of a telescopic vernier caliper according to the present utility model;

FIG. 3 is a schematic diagram of the operation of a depth gauge of the telescopic vernier caliper;

fig. 4 is a schematic diagram of an elongation mechanism of a telescopic vernier caliper. In the figure: 1. a main scale; 2. vernier scale; 3. an inner measuring claw; 4. an outer measuring claw; 5. an elongated claw; 6. a clamping groove; 7. a chute; 8. a clamping rod; 9. a spring; 10. pushing grooves; 11. a clamping hole; 12. a fastening screw; 13. a connecting rod; 14. a roller; 15. a magnifying convex lens; 16. placing a block; 17. a depth gauge.

Detailed Description

Referring to fig. 1-4, a telescopic vernier caliper comprises a main scale 1, a pair of inner measuring claws 3 and a pair of outer measuring claws 4, and is characterized in that the main scale 1 is provided with a vernier scale 2 in a sliding manner, the pair of inner measuring claws 3 are symmetrically arranged at the tops of the main scale 1 and the vernier scale 2 respectively, the pair of outer measuring claws 4 are symmetrically arranged at the bottoms of the main scale 1 and the vernier scale 2 respectively, cavities are formed in the pair of outer measuring claws 4, and an extension mechanism is arranged in the cavities and is used for extending the length of the outer measuring claws 4.

The extension mechanism still includes spout 7, the rod 8 is established to the card and spring 9, the spout 7 is established on extension claw 5, the rod 8 is established to the card moves in spout 7, spring 9 one end and spout 7 inner wall fixed connection, and the other end and the rod 8 fixed connection are established to the card, the effect of setting up like this is through being equipped with extension claw 5 in outer measurement claw 4, establish piece and draw-in groove 6 sliding connection through the card between outer measurement claw 4 and the extension claw 5, when pushing away the rod 8 and establishing the rod and move down along push away groove 10, the rod 8 is established to the card drives extension claw 5 and is measured claw 4 internal movement outward, make the length extension of outer measurement claw 4, make when measuring the article that the diameter is slightly bigger, the effectual card of outer measurement claw 4 of extension waits to measure the article, be convenient for measure.

Referring to fig. 1, a clamping block is arranged in a cavity of the outer measuring jaw 4, a clamping groove 6 is formed in the extending jaw 5, a pushing groove 10 is formed in the outer measuring jaw 4, a plurality of clamping holes 11 are formed in the side wall of the pushing groove 10, and the effect of the arrangement is that the length of the outer measuring jaw 4 can be controlled conveniently.

Referring to fig. 3, one end of the main scale 1, which is far away from the inner measuring jaw 3, is provided with a placement block 16, a depth scale 17 is fixedly connected to the vernier scale 2, a sliding groove is formed in the main scale 1, the depth scale 17 moves along with the vernier scale 2 in the sliding groove, the placement block 16 is arranged at one end of the main scale 1, which is far away from the inner measuring jaw 3, the vertical direction of the vernier scale is kept vertical through the placement block 16 when the depth scale 17 is used, and the phenomenon that the final measurement is inaccurate due to the fact that the shaking of the depth scale 17 occurs in the measurement process due to manual holding of a person is prevented.

Referring to fig. 1, the vernier 2 and the main scale 1 are provided with scales for facilitating the measurement and reading of staff, the vernier 2 is provided with a magnifying convex lens 15, and the effect of the setting is that the staff can conveniently amplify the scales through the magnifying convex lens 15, so that the staff can observe the measured data more conveniently.

The layering is arranged on the contact surface between the vernier 2 and the top of the main scale 1, the fastening screws 12 are rotationally connected to the vernier 2, the connecting rods 13 are respectively arranged on two sides of the vernier 2, one end of each connecting rod 13, which is far away from the vernier 2, is rotationally connected with the corresponding roller 14, the corresponding roller 14 is in rolling contact with the bottom end of the main scale 1, and the effect of the arrangement is that the connecting rods 13 drive the vernier 2 to move on the main scale 1 when the rollers 14 are rolled, so that friction between the vernier 2 and the main scale 1 is reduced, and the service life of the vernier is prolonged.

The working principle of the utility model is as follows:

through being equipped with on vernier 2 and enlarge the convex mirror 15, be convenient for measurement personnel enlarge the scale through enlarging the convex mirror 15, more convenient observation measurement's data, and rotate through connecting rod 13 on vernier 2 and connect gyro wheel 14, gyro wheel 14 and main scale 1 lateral wall roll connection, connecting rod 13 drives vernier 2 and moves on main scale 1 when rolling gyro wheel 14, reduce the friction between vernier 2 and the main scale 1, the life of this vernier caliper is prolonged, through being equipped with at the one end that main scale 1 kept away from interior measurement claw 3, through placing piece 16 when using depth chi 17, make the vertical direction of this vernier caliper keep perpendicular, prevent can lead to the condition that the shake can appear in the measurement process owing to the manual holding of people to make the inaccurate phenomenon of final measurement, through being equipped with extension claw 5 in outer measurement claw 4, through card establish piece and draw-in groove 6 sliding connection between outer measurement claw 4, when pushing card establishes pole 8 and move down along push away groove 10, card establishes pole 8 and drives extension claw 5 and remove in outer measurement claw 4, make the measurement claw 4 keep vertical direction through placing piece 16 when using depth chi 17, prevent that the condition that can appear shaking in the measurement claw 17 from appearing in the measurement process, the measurement claw is inaccurate, the measurement article is convenient for length is measured, and the measurement article is measured when waiting is big.

The foregoing is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art, who is within the scope of the present utility model, should make equivalent substitutions or modifications according to the technical scheme of the present utility model and the inventive concept thereof, and should be covered by the scope of the present utility model.

Claims (6)

1. The utility model provides a telescopic vernier caliper, includes main scale (1), a pair of interior measurement claw (3) and a pair of outer measurement claw (4), its characterized in that, it has vernier scale (2) to slide on main scale (1), a pair of interior measurement claw (3) symmetry respectively is established at main scale (1) and vernier scale (2) top, a pair of outer measurement claw (4) symmetry respectively is established in main scale (1) and vernier scale (2) bottom, a pair of all be equipped with the cavity in outer measurement claw (4), be equipped with extension mechanism in the cavity, extension mechanism is including extension claw (5) that are used for prolonging outer measurement claw (4) length, be equipped with on vernier scale (2) and enlarge convex mirror (15), the one end that inner measurement claw (3) was kept away from to main scale (1) is equipped with places piece (16), fixedly connected with degree of depth scale (17) on vernier scale (2).

2. The telescopic vernier caliper according to claim 1, wherein a clamping block is arranged in the cavity of the outer measuring claw (4), a clamping groove (6) is formed in the extending claw (5), a pushing groove (10) is formed in the outer measuring claw (4), and a plurality of clamping holes (11) are formed in the side wall of the pushing groove (10).

3. The telescopic vernier caliper according to claim 2, wherein the extension mechanism further comprises a chute (7), a clamping rod (8) and a spring (9), the chute (7) is arranged on the extension claw (5), the clamping rod (8) moves in the chute (7), one end of the spring (9) is fixedly connected with the inner wall of the chute (7), and the other end of the spring is fixedly connected with the clamping rod (8).

4. A telescopic vernier caliper according to claim 1, wherein the main scale (1) is provided with a sliding groove, and the depth scale (17) moves in the sliding groove along with the movement of the vernier scale (2).

5. The telescopic vernier caliper according to claim 1, wherein scales which are convenient for staff to measure and read are arranged on the vernier caliper (2) and the main scale (1), a pressing bar is arranged on the contact surface between the vernier caliper (2) and the top of the main scale (1), and a fastening screw (12) is rotationally connected on the vernier caliper (2).

6. The telescopic vernier caliper according to claim 1, wherein connecting rods (13) are respectively arranged on two sides of the vernier caliper (2), one end, far away from the vernier caliper (2), of each connecting rod (13) is rotationally connected with a roller (14), and each roller (14) is in rolling contact with the bottom end of the main caliper (1).