CN211120899U

CN211120899U - Vernier caliper

Info

Publication number: CN211120899U
Application number: CN201921711722.2U
Authority: CN
Inventors: 曹安林
Original assignee: Nanjing Institute of Mechatronic Technology
Current assignee: Nanjing Institute of Mechatronic Technology
Priority date: 2019-10-14
Filing date: 2019-10-14
Publication date: 2020-07-28
Anticipated expiration: 2029-10-14

Abstract

A vernier caliper, comprising: the main scale and the edge that has the scale of vice chi wait equally, wherein the upper and lower both sides of main scale are provided with first little measuring jaw and first big measuring jaw respectively, the upper and lower side of vice chi is provided with second little measuring jaw and the big measuring jaw of second respectively. The upper parts of the first small measuring jaw and the second small measuring jaw are arc-shaped clamping jaws which can measure the local width of the curved cavity. And a fixing device is further arranged at one end of the lower side of the auxiliary ruler, which is far away from the first large-scale claw. Fixing device pass through the gear and with wheel drive between the gear engagement's the rack and the inward movement, inseparable butt the lower extreme of main scale, from this the utility model discloses a slide caliper can the lock of one-hand operation rack die vice chi.

Description

Vernier caliper

Technical Field

The utility model relates to an accurate measurement field especially relates to a slide caliper.

Background

A vernier caliper is a measuring tool for measuring length, inner diameter, outer diameter and depth. The vernier caliper consists of a main ruler and a vernier attached to the main ruler and capable of sliding. The main scale and the vernier of the vernier caliper are provided with two pairs of movable measuring claws, namely an inner measuring claw and an outer measuring claw, wherein the inner measuring claw is generally used for measuring the inner diameter, and the outer measuring claw is generally used for measuring the length and the outer diameter.

However, when measuring, the other hand is sometimes needed to screw the set screw tightly to lock the vernier, and then the reading is taken up, otherwise the workpiece is touched to cause an error, and sometimes the inner diameter of the cambered surface of the workpiece needs to be measured, and when the size of the workpiece is processed, other measuring tools are needed to measure whether the plane to be processed is horizontal.

SUMMERY OF THE UTILITY MODEL

In order to solve the defects existing in the prior art, the utility model aims to provide a vernier caliper. The problem that needs both hands to operate when the locking is measured can be solved to this application, can realize that one-hand mobility measurement dies to can measure the local width of curved surface cavity, solve the measurement of the horizontal plane when the centre gripping work piece, the scale level of main scale and vice chi reduces the parallax error simultaneously.

In order to achieve the above object, the present invention provides a vernier caliper, which comprises: the main scale and the auxiliary scale are slidably sleeved on the main scale, the main scale and the auxiliary scale are equal in height of graduated edges, a first small measuring jaw and a first large measuring jaw are respectively arranged on the upper side and the lower side of the main scale, grooves used for being connected with the auxiliary scale are further formed in the upper side and the lower side of the main scale, a second large measuring jaw is arranged on the lower portion of the auxiliary scale, a second small measuring jaw is arranged on the upper portion of the auxiliary scale, a horizontal scale and a fixing device are arranged on the edge of the auxiliary scale, two convex edges extending inwards are further respectively arranged in the middle of the auxiliary scale, and the convex edges are clamped and enter the grooves and translate along the grooves; the upper portions of the first small measuring jaw and the second small measuring jaw are arc-shaped clamping jaws, the horizontal ruler is arranged on the upper side of the auxiliary ruler, the fixing device is arranged on the lower side of the auxiliary ruler and far away from one end of the first large measuring jaw, the fixing device comprises a gear and a rack meshed with the gear, the rack is driven by the gear to move inwards to be tightly abutted to the lower end of the main ruler, and the auxiliary ruler is locked by the rack.

Optionally, in the vernier caliper, the two sets of ribs and grooves between the main scale and the auxiliary scale are respectively arranged along the central axes of the upper end surface and the lower end surface of the auxiliary scale and the main scale.

Optionally, in the vernier caliper, the auxiliary scale is further provided with a depth scale for measuring depth, and the depth scale is disposed in the groove on the upper side of the main scale and connected to the rib.

Optionally, in the vernier caliper, the main scale and the auxiliary scale are in a zero-scale state, the inner sides of the first large measuring jaw and the second large measuring jaw and the inner sides of the first small measuring jaw and the second small measuring jaw are tightly attached to each other, the end portions of the arc-shaped clamping jaws of the first small measuring jaw and the second small measuring jaw are tightly attached to each other, and the depth scale is flush with the right side of the main scale.

Optionally, in the vernier caliper, the fixing device further includes a full-thread stud, and the gear is connected to the full-thread stud and the full-thread stud is connected to the auxiliary scale through a thread pair.

Optionally, in the vernier caliper, the full-thread stud is disposed on the lower side of the auxiliary caliper and is far away from one corner of the first large-capacity claw, and the gear protrudes out of an edge of the one corner where the full-thread stud is located.

Optionally, in the vernier caliper, the horizontal ruler is higher than the scale-marked surface of the main ruler.

Compared with the prior art, the utility model has the following technical effects:

1. the utility model provides a vernier caliper, the main scale with the vice chi have the edge of scale wait when can realizing the reading parallax, increase measured data's accuracy, first little claw with the upper portion of the little claw of second is the arc jack catch, can measure the local width of curved surface cavity, the rack by gear drive inwardly moved and inseparable butt the lower extreme of main scale, the rack lock is died the vice chi realizes that one-hand operation realizes moving the measurement and lock diely.

2. Furthermore, the auxiliary ruler is also provided with a depth ruler for measuring depth, so that the depth can be measured.

3. Further, the gear and the full thread stud, the full thread stud and the auxiliary ruler are connected through thread pairs, and the rack is locked through self-locking of threads, so that the auxiliary ruler is further locked, and errors caused by movement of the auxiliary ruler during reading are prevented.

4. Furthermore, the gear protrudes out of the edge of one corner where the full-thread stud is located, and the edge can be pressed on the gear instead of the edge when the full-thread stud is moved and measured by a single hand, so that the vernier caliper can be operated comfortably, and the gear can be rotated to drive the rack to lock the auxiliary ruler conveniently.

5. Further, the level bar sets up to be higher than the surface that has the scale in the main scale is convenient for to the observation of the air level in the level bar, avoids the bubble to be sheltered from by the main scale.

Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by the practice of the invention.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, together with the embodiments of the invention for the purpose of explanation and not limitation of the invention. In the drawings:

FIG. 1 is a schematic structural diagram according to the present invention

Fig. 2 is a cross-sectional view of the present invention at the fixing device

In the figure, 1-main scale; 2-auxiliary ruler; 3-a second small measuring jaw; 4-a first small measuring jaw; 5-a first plurality of jaws; 6-a second plurality of claws; 7-a horizontal ruler; 8-a rack; 9-full thread stud; 10-a gear; 11-depth gauge; 12-a rib; 13-grooves.

Detailed Description

The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are presented herein only to illustrate and explain the present invention, and not to limit the present invention.

The term "connected" as used herein may mean either a direct connection between elements or an indirect connection between elements through other elements.

The meaning of "up and down" in the present invention means that the direction pointing to the first small measuring jaw or the second small measuring jaw from the cylinder structure of the vernier caliper is up at the view angle that the user is just opposite to the vernier caliper when reading; the direction from the vernier caliper cylinder structure to the first large claw or the second large claw is downward.

A vernier caliper, comprising: the main scale 1 and the auxiliary scale 2 slidably sleeved on the main scale 1 are equal in height, graduated edges of the main scale 1 and the auxiliary scale 2 are equal in height, a first small measuring jaw 4 and a first large measuring jaw 5 are respectively arranged on the upper side and the lower side of the main scale 1, grooves 13 used for being connected with the auxiliary scale 2 are further formed in the upper side and the lower side of the main scale 1, a second large measuring jaw 6 is arranged on the lower portion of the auxiliary scale 2, a second small measuring jaw 3 is arranged on the upper portion of the auxiliary scale 2, a horizontal scale 7 and a fixing device are arranged on the edge of the auxiliary scale 2, two protruding edges 12 extending inwards are further respectively arranged in the middle of the auxiliary scale 2, and the protruding edges 12 are clamped into the grooves 13 and translate along the grooves 13; the upper parts of the first small measuring jaw 4 and the second small measuring jaw 3 are arc-shaped clamping jaws, the level 7 is arranged on the upper side of the secondary ruler 2, the fixing device is arranged on the lower side of the secondary ruler 2 and is far away from one end of the first large measuring jaw 5, the fixing device comprises a gear 10 and a rack 8 meshed with the gear 10, the rack 8 is driven by the gear 10 to move inwards to be tightly abutted against the lower end of the main ruler 1, and the rack 8 locks the secondary ruler 2; the two groups of ribs 12 and grooves 13 between the main scale 1 and the auxiliary scale 2 are respectively arranged along the central axes of the upper end surface and the lower end surface of the auxiliary scale 2 and the main scale 1; the auxiliary ruler 2 is also provided with a depth ruler 11 for measuring depth, and the depth ruler 11 is arranged in a groove 13 on the upper side of the main ruler 1 and connected with the rib 12; under the zero-scale state between the main ruler and the auxiliary ruler, the inner sides of the first large measuring jaw 5 and the second large measuring jaw 6 and the inner sides of the first small measuring jaw 4 and the second small measuring jaw are tightly attached, the end parts of the arc-shaped clamping jaws of the first small measuring jaw 4 and the second small measuring jaw are tightly attached, and the depth ruler 11 is flush with the right side of the main ruler 1; the fixing device further comprises a full-thread stud 9, and the gear 10 and the full-thread stud 9 as well as the full-thread stud 9 and the auxiliary ruler 2 are connected through thread pairs; the full-thread stud 9 is arranged on the lower side of the auxiliary ruler 2 and is far away from one corner of the first large-capacity claw 5, and the gear 10 protrudes out of the edge of the corner where the full-thread stud 9 is located; the level 7 is higher than the scale marked surface of the main scale 1.

The utility model discloses a principle and advantage: when the device is used, a thumb pushes the auxiliary ruler 2 to move on the gear 10, the first large measuring jaw 5 and the second large measuring jaw 6 are used for measuring the length and the outer diameter of an object, the arc-shaped jaw structures of the first small measuring jaw 4 and the second small measuring jaw 3 are used for avoiding touching the minimum inner diameter position of the object, the local width of a curved surface cavity can be measured through the end part of the arc-shaped jaw, the application range of the vernier caliper is expanded, the inner diameter of the object can be measured through measuring the lower parts of the first small measuring jaw 4 and the second small measuring jaw 3, one end of the main ruler 1 is attached to the object to be measured, the gear 10 is pulled backwards to drive the depth ruler 11 on the auxiliary ruler 2 to extend backwards, when the required size is to be measured, the thumb rotates the gear 10 clockwise to drive the rack 8 linked with the gear 10 to extend towards the main ruler 1 until the lower end of the main ruler 1 is tightly abutted against the lower end of the main ruler 1, the auxiliary ruler 2 is locked, the gear 10 is connected with the, by means of the self-locking characteristic of the thread pair, the locking of the auxiliary ruler 2 is further locked, the measuring claw is prevented from being touched when the auxiliary ruler moves, the measured value is changed, the measuring accuracy is improved, the height of the graduated edge of the auxiliary ruler 2 and the height of the graduated edge of the main ruler 1 are equal, the reading is zero, the reading error is reduced, the plane to be processed needs to be horizontal when a workpiece is processed, the vernier caliper can be flatly placed on the plane to be processed, the plane can be used for detecting whether the plane is horizontal, and the user can be facilitated without the help of other tools.

Those of ordinary skill in the art will understand that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A vernier caliper, comprising: the main scale (1) and the auxiliary scale (2) which can slide and is sleeved on the main scale (1) are equal in height, graduated edges of the main scale (1) and the auxiliary scale (2) are equal in height, wherein the upper side and the lower side of the main scale (1) are respectively provided with a first small measuring jaw (4) and a first large measuring jaw (5), the upper side and the lower side of the main scale (1) are further provided with a groove (13) for connecting the auxiliary scale (2), the lower part of the auxiliary scale (2) is provided with a second large measuring jaw (6), the upper part of the auxiliary scale (2) is provided with a second small measuring jaw (3), the edge of the auxiliary scale (2) is provided with a horizontal scale (7) and a fixing device, the middle of the auxiliary scale (2) is further respectively provided with two convex ribs (12) which extend inwards, and the convex ribs (12) are clamped and enter the groove (13) and translate along the groove (13); first little measuring jaw (4) with the upper portion of second little measuring jaw (3) is the arc jack catch, level (7) set up the upside of secondary scale (2), fixing device sets up the downside of secondary scale (2) and keeps away from the one end of first big measuring jaw (5), fixing device include gear (10) and with rack (8) of gear (10) meshing, rack (8) by gear (10) transmission inwardly moved and inseparable butt the lower extreme of main scale (1), rack (8) lock is died secondary scale (2).

2. A vernier caliper as claimed in claim 1, characterized in that said two sets of ridges (12) and grooves (13) between said main scale (1) and said secondary scale (2) are respectively provided along the central axis of the upper and lower end faces of said secondary scale (2) and said main scale (1).

3. A vernier calliper as claimed in claim 2, characterised in that the secondary scale (2) is further provided with a depth gauge (11) for measuring depth, said depth gauge (11) being located in a recess (13) in the upper side of the main scale (1) and connected to said rib (12).

4. A vernier caliper as claimed in claim 3, wherein the inner sides of the first large quantity jaw (5) and the second large quantity jaw (6), the first small quantity jaw (4) and the second small quantity jaw (3) are closely attached, the end parts of the arc-shaped jaws of the first small quantity jaw (4) and the second small quantity jaw (3) are closely attached, and the depth scale (11) is flush with the right side of the main scale (1) in a zero-scale state between the main scale and the auxiliary scale.

5. A vernier calliper as claimed in claim 4, wherein said fixing means further comprises a full threaded stud (9), and the connection between said gear (10) and said full threaded stud (9), and between said full threaded stud (9) and said minor ruler (2) is by means of screw pairs.

6. A vernier calliper as claimed in claim 5, wherein said full threaded stud (9) is provided on the underside of said secondary ruler (2) at a corner remote from said first large jaw (5), said gear (10) protruding beyond the edge of the corner where said full threaded stud (9) is located.

7. A vernier calliper as claimed in claim 6, wherein said level (7) is higher than the graduated face of said main scale (1).