CN216668462U

CN216668462U - Self-positioning vernier caliper

Info

Publication number: CN216668462U
Application number: CN202220163824.0U
Authority: CN
Inventors: 徐诗伟; 舒友全; 柯庚平; 周国令; 冯淇瑞
Original assignee: Chongqing Academy of Metrology and Quality Inspection
Current assignee: Chongqing Academy of Metrology and Quality Inspection
Priority date: 2022-01-21
Filing date: 2022-01-21
Publication date: 2022-06-03
Anticipated expiration: 2032-01-21

Abstract

The utility model discloses a self-positioning vernier caliper which comprises a caliper body and a vernier scale slidably arranged on the caliper body, wherein a self-positioning mechanism for positioning the vernier scale relative to the caliper body is arranged on the vernier scale, a clamping groove is formed in a contact surface of the inner side of the vernier scale and the caliper body in sliding fit, and the self-positioning mechanism comprises a clamping block, a spring and a pushing block which are arranged at the clamping groove; the part of the bottom surface of the clamping groove, which is opposite to the ruler body, is an inclined surface, and the clamping block is plugged between the inclined surface and the ruler body under the elastic action of the spring; the push block is slidably arranged in the clamping groove and used for pushing the clamping block; the self-positioning vernier caliper improves the positioning structure of the vernier, can realize self-positioning after moving the vernier, does not need additional operation, and is convenient to use.

Description

Self-positioning vernier caliper

Technical Field

The utility model belongs to the technical field of measuring tools, and particularly relates to a self-positioning vernier caliper.

Background

The vernier caliper is a tool commonly used in industry for measuring length and consists of a caliper body and a vernier capable of sliding on the caliper body. A spring piece is arranged between the vernier and the ruler body, and the vernier and the ruler body are tightly leaned by the elasticity of the spring piece. The ruler body and the vernier are provided with measuring claws, the width of a groove, the inner diameter of a pipe and the like can be measured by using the inner measuring claw, and the thickness of a part, the outer diameter of the pipe and the like can be measured by using the outer measuring claw. The upper part of the vernier is provided with a fastening screw which can fix the vernier at any position on the ruler body. Fastening screws need to be screwed down when the vernier is fixed, two hands are needed to operate and complete, the general size of the fastening screws is small, and the vernier has strong uncomfortable feeling during operation.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects in the prior art, the utility model provides the self-positioning vernier caliper, which improves the positioning structure of the vernier caliper, can realize self-positioning after moving the vernier caliper, does not need additional operation, and is convenient to use.

The self-positioning vernier caliper comprises a caliper body and a vernier which is slidably mounted on the caliper body, wherein a self-positioning mechanism for positioning the vernier relative to the caliper body is arranged on the vernier, a clamping groove is formed in a contact surface of the inner side of the vernier, which is in sliding fit with the caliper body, and the self-positioning mechanism comprises a clamping block, a spring and a pushing block which are mounted at the clamping groove; the part of the bottom surface of the clamping groove, which is opposite to the ruler body, is an inclined surface, and the clamping block is plugged between the inclined surface and the ruler body under the elastic force action of the spring; the push block is slidably mounted in the clamping groove and used for pushing the clamping block, the clamping block is pushed between the bottom face of the clamping groove and the ruler body under the elastic action of the spring, the vernier scale is positioned by utilizing the self-locking function of the clamping block, the push block is driven to overcome the elastic force of the spring when pushed, the clamping block is made to move towards the direction with a wider distance between the inclined plane and the ruler body, and the self-locking is made to be invalid so as to move the vernier scale.

Furthermore, the number of the clamping blocks and the number of the springs are two, the clamping blocks and the springs are symmetrically arranged relative to the pushing block, and the springs are supported between the middle part of the pushing block and the corresponding clamping blocks; the distance between the bottom surface of the clamping groove and the ruler body is gradually reduced from the middle point between the two clamping blocks to the direction where the two clamping blocks are located, the push block can automatically return under the elastic force of the two springs, the push block is separated from the two clamping blocks after returning, a certain gap is formed, the bidirectional positioning of the vernier scale is realized through the combined action of the two clamping blocks, the positioning precision is high, and the operation is convenient.

Furthermore, the push block comprises a rectangular frame which is sleeved with the two clamping blocks and a push rod which is fixed in the middle of the rectangular frame and extends out of the clamping groove; the spring is supported between the root of the push rod and the corresponding fixture block, when the push block moves, one fixture block is driven to move by the rectangular frame of the push block, so that the fixture block is separated from the clamping action between the vernier and the ruler body, and the vernier moves along with the push block; after the push block is released, the push block is reset under the action of the elastic force of the two springs, and the two clamping blocks are simultaneously plugged between the vernier and the ruler body.

Further, the ejector pad is still including locating the vernier scale surface and pressing the splenium with the push rod outer end is fixed to be linked to each other, the surface of pressing the splenium is equipped with the arc wall that is used for pointing to press, conveniently controls the ejector pad with the finger.

Furthermore, the fixture block is a steel ball, and the self-locking performance of the fixture block is better by utilizing the rolling performance of the steel ball, so that the positioning precision of the vernier scale is improved.

The utility model has the beneficial effects that: the self-positioning vernier caliper improves the positioning structure of the vernier, can realize self-positioning after moving the vernier, does not need additional operation, and is convenient to use.

Drawings

In order to more clearly illustrate the detailed description of the utility model or the technical solutions in the prior art, the drawings that are needed in the detailed description of the utility model or the prior art will be briefly described below. In the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a cross-sectional view of the self-positioning mechanism.

Detailed Description

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.

It is to be noted that, unless otherwise specified, technical or scientific terms used herein shall have the ordinary meaning as understood by those skilled in the art to which the present invention belongs.

As shown in fig. 1 and 2: the self-positioning vernier caliper comprises a caliper body 7 and a vernier caliper 1 which is slidably mounted on the caliper body 7, wherein a self-positioning mechanism for positioning the vernier caliper 1 relative to the caliper body 7 is arranged on the vernier caliper 1, a clamping groove is formed in a contact surface, in sliding fit with the caliper body 7, of the inner side of the vernier caliper 1, and the self-positioning mechanism comprises a clamping block 6, a spring 5 and a push block which are mounted at the clamping groove; the part of the bottom surface of the clamping groove, which is opposite to the ruler body 7, is an inclined surface, and the clamping block 6 is plugged between the inclined surface and the ruler body 7 under the elastic force action of the spring 5; the ejector pad is slidably mounted in the clamping groove and used for pushing the fixture block 6, the fixture block 6 is pushed between the bottom surface of the clamping groove and the ruler body 7 under the elastic action of the spring 5, the vernier scale 1 is positioned by utilizing the self-locking function of the fixture block 6, the fixture block 6 is driven to overcome the elastic force of the spring 5 when the ejector pad is pushed, the fixture block 6 is moved towards the direction with the wider distance between the inclined surface and the ruler body 7, the self-locking is disabled, and therefore the vernier scale 1 can be moved conveniently.

In this embodiment, there are two clamping blocks 6 and two springs 5, the clamping blocks 6 and the springs 5 are symmetrically arranged relative to the pushing block, and the springs 5 are supported between the middle of the pushing block and the corresponding clamping blocks 6; the distance between the bottom surface of the clamping groove and the ruler body 7 is gradually reduced from the middle point between the two clamping blocks 6 to the direction where the two clamping blocks 6 are located, the push block can automatically return under the elastic force of the two springs 5, the push block is separated from the two clamping blocks 6 after returning and forms a certain gap, the two-way positioning of the vernier scale 1 is realized through the combined action of the two clamping blocks 6, the positioning precision is high, and the operation is convenient.

In this embodiment, the push block comprises a rectangular frame 2 in which two clamping blocks 6 are sleeved and a push rod 3 fixed in the middle of the rectangular frame 2 and extending out of the clamping groove; the spring 5 is supported between the root of the push rod 3 and the corresponding fixture block 6, when the push block moves, one fixture block 6 is driven to move through the rectangular frame 2, so that the fixture block 6 is separated from the clamping action between the vernier scale 1 and the scale body 7, and the vernier scale 1 moves along with the push block; after the push block is released, the push block is reset under the action of the elastic force of the two springs 5, and the two fixture blocks 6 are simultaneously plugged between the vernier scale 1 and the scale body 7.

In this embodiment, the ejector pad is still including locating 1 surface of vernier scale and pressing portion 4 with 3 outer end fixed links to each other of push rod, the surface of pressing portion 4 is equipped with the arc wall that is used for the finger to press, conveniently controls the ejector pad with the finger.

In this embodiment, the fixture block 6 is a steel ball, and the self-locking performance of the steel ball is better by utilizing the rolling performance of the steel ball, so that the positioning accuracy of the vernier scale 1 is improved.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the utility model has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention, and they should be construed as being included in the following claims and description.

Claims

1. The utility model provides a self-align slide caliper, includes blade and slidable mounting in the vernier scale of blade, its characterized in that: the vernier scale is provided with a self-positioning mechanism for positioning the vernier scale relative to the scale body, a clamping groove is formed in a contact surface of the inner side of the vernier scale and the scale body in sliding fit, and the self-positioning mechanism comprises a clamping block, a spring and a push block which are arranged at the clamping groove; the part of the bottom surface of the clamping groove, which is opposite to the ruler body, is an inclined surface, and the clamping block is plugged between the inclined surface and the ruler body under the elastic force action of the spring; the push block is slidably arranged in the clamping groove and used for pushing the clamping block.

2. The self-positioning vernier caliper of claim 1, wherein: the two clamping blocks and the two springs are respectively arranged, the clamping blocks and the springs are symmetrically arranged relative to the push block, and the springs are supported between the middle part of the push block and the corresponding clamping blocks; the distance between the bottom surface of the clamping groove and the ruler body is gradually reduced from the middle point between the two clamping blocks to the direction where the two clamping blocks are located.

3. The self-positioning vernier caliper of claim 2, wherein: the push block comprises a rectangular frame which is used for sleeving the two clamping blocks and a push rod which is fixed in the middle of the rectangular frame and extends out of the clamping groove; the spring is supported between the root of the push rod and the corresponding fixture block.

4. The self-positioning vernier caliper of claim 3, wherein: the ejector pad is still including locating the vernier surface and with the push rod outer end fixed continuous press the splenium, the surface of pressing the splenium is equipped with the arc wall that is used for the finger to press.

5. The self-positioning vernier caliper according to any one of claims 1 to 4, wherein: the fixture block is a steel ball.