CN213920457U

CN213920457U - Push type gauge locking compasses

Info

Publication number: CN213920457U
Application number: CN202022523648.0U
Authority: CN
Inventors: 韩景; 黄永泉; 郑龙振
Original assignee: Quanzhou Wenbao Light Industry Co ltd
Current assignee: Quanzhou Wenbao Light Industry Co ltd
Priority date: 2020-11-04
Filing date: 2020-11-04
Publication date: 2021-08-10
Anticipated expiration: 2030-11-04

Abstract

The utility model discloses a push type gauge length locking compasses, including the compasses head, the stitch, the lead foot and install setting element, gauge length mechanism and the expanding spring in the compasses head, the setting element includes gliding straight section from top to bottom and the major part of being connected with the straight section, the stitch and the first end of lead foot are installed respectively and are rotated, two rotation pieces are rotatable to be installed on the major part respectively, gauge length mechanism includes the impeller and is used for tightening up and the deformation piece of internal deformation under the extrusion fit of impeller, the impeller is connected with the pressing member, pressing member and impeller are slidable mounting respectively outside the straight section, the deformation piece is located outside the major part to the cover, two rotation pieces are all located the deformation piece; the telescopic spring is sleeved outside the straight section, the telescopic spring is tensioned between the pressing piece and the deformation piece, and the pushing piece is positioned at the head of the compass through the clamping structure. The pushing piece is pressed downwards to press the deformation piece in a pressing mode so that the deformation piece deforms inwards, the rotation piece cannot rotate, and the purpose of locking the distance between the pin and the lead pin is achieved.

Description

Push type gauge locking compasses

Technical Field

The utility model relates to a compasses field, more specifically say and relate to a push type lock is apart from compasses.

Background

Compasses are tools used to draw circles or arcs in mathematics and drawing, and are commonly used in ruler drawing.

Conventional compasses include a compass head and a foot and a lead foot rotatably mounted on the compass head. When drawing a circle, because of stitch and lead foot respectively with compasses head rotatable coupling, when the finger touched stitch or lead foot, thereby the lead foot was easily rotated and is changed the distance between stitch and the lead foot, influences the degree of accuracy of the circle or the circular arc of drawing.

Accordingly, the present inventors have conducted extensive studies and have made the present invention.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a push type gauge length compasses, its mode that adopts to press realizes the distance locking and the distance unblock between stitch and the lead foot to do not influence the effect of drawing the circle or drawing the circular arc, simple structure.

In order to achieve the above purpose, the utility model discloses a solution is:

a press type distance-locking compasses comprises a compasses head, a stitch, a lead foot, and a positioning piece and a distance-locking mechanism which are arranged in the compasses head, wherein the positioning piece comprises a straight section which slides up and down and a big head part which is connected with the straight section; the circular gauge is characterized by further comprising an expansion spring, the expansion spring is sleeved outside the straight section, the expansion spring is respectively tensioned between the deformation piece and the inside of the pressing piece, and the pushing piece is positioned at the head of the circular gauge through a clamping structure in the moving process of the pressing piece.

A first elastic sheet is arranged on the pushing piece or the pressing piece, a clamping block is arranged at the free end of the first elastic sheet, and a first limiting hole and a second limiting hole are respectively formed in the position, corresponding to the first elastic sheet, on the compass head from top to bottom; the upper part of the compass head is provided with a second elastic sheet, the free end of the second elastic sheet is provided with a bearing block matched with the clamping block in a clamping manner, the bearing block faces the second limiting hole, and the clamping structure comprises the clamping block and the bearing block;

when the telescopic spring is in a compressed state, the clamping block is positioned in the second limiting hole and is in clamping fit with the bearing block; when the telescopic spring is in a natural state, the clamping block is clamped in the first limiting hole.

The compasses head is provided with the lid hole corresponding to first flexure strip department, arrange from top to bottom in the lid hole, the compasses are overhead to be provided with the stopper corresponding to spacing hole department, the stopper will the lid hole is from last to dividing into down in proper order first spacing hole with the spacing hole of second.

The bearing block is three horn shapes, the sharp portion court of bearing block the width direction in spacing hole arranges, be provided with on the joint block with the face is accepted to the downside joint complex of bearing block, the lateral wall of joint block is the arc side, the arc side is from last to the side of incurving extremely down.

The pressing piece is of a hollow rod-shaped structure, and the upper part of the pressing piece extends out of the head of the compass; the upper portion cover of pressing member is equipped with folding pressing sleeve, perhaps the upper end department of pressing member pastes and is equipped with the pressing sheet.

An extrusion convex part is arranged on the pushing part, and one side of the extrusion convex part corresponding to the deformation part is taken as a matching side;

the matching side of the extrusion convex part is provided with a first inclined part which is arranged from outside to inside upwards in an inclined manner; or the upper part of the outer side wall of the deformation piece is respectively provided with a second inclined part corresponding to the two extrusion convex parts, and the second inclined parts are obliquely arranged from inside to outside; or the matching sides of the two extrusion convex parts are respectively provided with a first inclined part which is obliquely arranged from outside to inside upwards, one end of the deformation part close to the extrusion convex parts is respectively provided with a third inclined part, and the two first inclined parts are respectively matched with the corresponding three phases of the inclined parts.

The deformation piece includes annular portion and cooperation section one, annular portion is provided with the confession the breach that straight section passed, the both ends of annular portion are provided with along the punishment respectively cooperation section one, two rotate the piece and all be located the surrounding range of annular portion, wherein, the upper portion of deformation piece is cooperation section one.

The two side walls of the annular part, which are away from each other, are respectively provided with a limiting groove, the lead pin is in limiting fit with one of the limiting grooves, and the pin is in limiting fit with the other limiting groove.

The pushing piece comprises a sleeve part and two matching sections II which are arranged oppositely, one ends of the two matching sections II are arranged on the sleeve part respectively, the lower end of the pressing piece is connected to the upper side of the sleeve part, the sleeve part and the pressing piece are sleeved outside the straight section respectively, each matching section is divided into two groups, each matching section I in each group is matched with the same matching section II, and the other end of each matching section II is provided with the extrusion convex part respectively.

The outer side walls of the two rotating pieces are respectively provided with a plurality of clamping teeth, and the clamping teeth are respectively arranged outside the corresponding rotating pieces in a surrounding mode.

After the structure is adopted, the utility model discloses following beneficial effect has:

1. when stitch and lead foot are opened required angle through the rotation of the rotation piece that corresponds respectively, press down the pressing piece, in order to drive the impeller and sticis deformation piece downwards so that deformation piece inwards tightens up and inwards warp, make expanding spring compressed, make deformation piece hold two rotation pieces tightly simultaneously and make two rotation pieces can't rotate, the activity of stitch and lead foot has been restricted, then adopt the joint structure to fix a position the impeller, in order to avoid the expanding spring that compressed to reset, with this purpose that reaches the distance between locking stitch and the lead foot, avoided influencing the effect of drawing a circle or drawing a circular arc because of external force touches and changes the distance between the two between stitch and the lead foot, and, the lock distance simple structure, and convenient operation.

2. The clamping matching of the clamping block and the bearing block is adopted, and the bearing surface of the clamping block is abutted against the upper side wall of the first limiting hole in the unlocking state; at the gauge length in-process, press down the pressing part so that the impeller moves down downwards, thereby make the joint piece downstream on the first elastic sheet, at the first butt of joint piece downstream in-process its arcwall face in stopper department, inwards deform under the effect of arcwall face when the joint piece is in the same direction as smooth movement, leave the stopper so that the joint piece recovers and enters into the spacing hole of second until the joint piece, and the butt is in the downside department of bearing the piece, with this location that realizes the impeller, joint simple structure, and need not to use too big external force just can realize the location of impeller.

3. The upper part of the pressing piece is provided with a pressing sleeve or a pressing sheet so as to provide comfortable touch feeling for a user and increase the use feeling.

4. Two rotate and set up arranging of a plurality of latches on the piece respectively, increased deformation and two friction forces that rotate between the piece to this friction force when having increased stitch and lead foot and rotating, deformation is inseparabler when the piece is inwards taken place to warp holds two rotation pieces tightly, ensures that two rotation pieces can't rotate.

Drawings

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

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

fig. 3 is a side view of the present invention;

FIG. 4 is a cross-sectional view of FIG. 3;

FIG. 5 is a schematic view of the engagement of the urging member and the deforming member;

fig. 6 is an exploded view of the present invention.

In the figure:

10-a compass head; 11-a column;

111-a limiting hole; 12-a mounting mouth;

13-a first cover; 132-a first retaining hole;

133-a second retaining hole; 14-a second cover;

15-a containment chamber; 21-stitch;

22-lead feet; 31-straight section;

32-big head; 321-strip-shaped positioning holes;

322-a convex part; 40-a rotating member;

41-latch; 42-rotation hole;

43-piece positioning hole; 51-a pusher;

511-a sleeve portion; 512-fitting section two;

5121-bevel one; 513-crush lobes;

52-a deformation member; 521-a ring-shaped portion;

5211-a notch; 5213-a recess;

522-fitting segment one; 5221-inclined part three;

53-pressing; 60-a telescopic spring;

71-a first elastic sheet; 711-a card block;

7111-bearing surface; 72-a second elastic sheet;

721-a receiving block; 80-a limiting recess;

and 90-pressing the sleeve.

Detailed Description

In order to further explain the technical solution of the present invention, the present invention is explained in detail by the following embodiments.

The utility model provides a push type lock is apart from compasses, for convenient the description to the position under the compasses user state is the utility model discloses a reference direction.

As shown in fig. 1-6, the press type pitch-locking compasses comprise a compass head 10, compass legs, a positioning piece and a pitch-locking mechanism which are arranged in the compass head 10. The compass leg comprises a stitch 21 with a compass needle arranged at the bottom and a lead foot 22 with a lead core arranged at the bottom. The stitch 21 can adopt a stitch structure shown by a commercially available compass, the lead foot 22 can adopt a lead foot structure shown by a commercially available compass, and the installation of the compass needle and the lead core is the same as that of the conventional compass, so the description is not repeated.

The positioning piece comprises a large head part 32 and a straight part 31 which is arranged up and down, the lower end of the straight part 31 is fixedly connected with the large head part 32, the straight part 31 and the large head part 32 are arranged in a segmented mode or are of an integrated structure, and the straight part 31 and the large head part 32 are of the integrated structure in the embodiment; the first ends (i.e., the upper ends) of the pin 21 and the lead pin 22 are respectively provided with a rotating member 40, and the two rotating members 40 are respectively rotatably mounted on the large head portion 32 and are respectively disposed at two sides of the large head portion 32. The locking distance mechanism comprises a pushing piece 51 and a deformation piece 52, the top of the pushing piece 51 is connected with a pressing piece 53, the upper part of the pressing piece 53 extends out of the head of the circular gauge, the straight section 31 is inserted in the pressing piece 53 in a mode of sliding up and down relative to the pressing piece 53, the pushing piece 51 is sleeved outside the straight section 31 in a sliding mode, the large head part 32 is installed in the deformation piece 52 in a mode of sliding up and down, and the two rotating pieces 40 are located in the surrounding range of the deformation piece 52. Wherein the deformation member is adapted to be tightened to be deformed inwardly by the press-fit of the pushing member 51.

The utility model discloses still including the expanding spring 60 of arranging from top to bottom, this expanding spring 60 cover is established outside straight section 31, and expanding spring 60's upper portion stretches into the inside of pressing piece 53, and expanding spring 60 tensioning is between the top in deformation 52 and the pressing piece, and impeller 51 is fixed a position in compasses head department through the joint structure at the removal in-process of pressing piece 53 (when expanding spring 60 is in compression state or natural state promptly).

In this embodiment, for convenience of description, the straight section 31 of the positioning member is located inward, and the direction away from the center of the straight section 31 is outward.

Specifically, the top of the compass head 10 is provided with a limiting hole 111, and the limiting hole 111 is used for inserting the pressing member 53. The inside of the compass head 10 is provided with a containing cavity 15, the containing cavity 15 is located at the lower part of the compass head 10, the containing cavity 15 is communicated with the limiting hole 111, the lower part of the side wall of the compass head 10 is provided with an installation opening part 12, the installation opening part 12 is communicated with the containing cavity 15, and the installation opening part is used for free movement of a stitch 21 and a lead foot 22. Wherein the compass head 10 may be of an integrally formed construction.

Preferably, in order to facilitate the assembly and disassembly of the compass, the compass head 10 is separately arranged, specifically, the compass head 10 includes a first cover 13 and a second cover 14 which are mutually covered, the mounting structure between the first cover 13 and the second cover 14 is a known structure, such as a clamping structure, a clamping hole is formed on the first cover 13, a mounting post is arranged on the second cover 14, the mounting post is in clamping fit with the clamping hole, and in addition, a conventional bolt structure may be adopted, and the like. The lower part of the first cover 13 and the second cover 14 after being covered with each other forms the accommodating cavity 15, the top of the first cover 13 is provided with the column 11 having a columnar structure, the limiting hole 111 is opened at the column 11, and the second cover 14 is provided with a mounting concave part corresponding to the column 11, so that the first cover 13 and the second cover are matched after being covered with each other, and the first cover 13 and the second cover 14 are more tightly covered with each other.

Further, the specific positioning structure of the pushing member is as follows: the clamping structure includes the clamping block 711 and the receiving block 721, the pressing member 53 is a hollow rod-shaped structure, one side of the pressing member 53 facing the first cover 13 is provided with a first elastic sheet 71, an upper end of the first elastic sheet 71 is fixedly connected to a lower portion of the pressing member 53, the outer side wall of a free end (i.e., a lower end) of the first elastic sheet 71 is provided with the clamping block 711, in this embodiment, the first elastic sheet 71 and the pressing member 53 are an integral structure; the outer side wall of the upper portion of the first cover 13 is provided with a second elastic sheet 72, the upper end of the second elastic sheet 72 is fixedly connected to the upper portion of the first cover 13, the inner side wall of the free end (i.e. the lower end) of the second elastic sheet 72 is provided with a receiving block 721, the clamping block 711 can be matched with the receiving block 721 in a clamping manner, and the second elastic sheet 72 and the first cover 13 can be an integrated structure in this embodiment. The first cover 13 has a first limiting hole 132 and a second limiting hole 133 formed in the position corresponding to the first elastic sheet 71 from top to bottom, wherein the receiving block 721 extends into the second limiting hole 133. When the first cover 13 is opened, a cover hole is formed in the first cover 13 corresponding to the first elastic piece 711, the cover hole is vertically arranged, a limit block is disposed on the first cover 13 corresponding to the cover hole, the limit block divides the cover hole into the first limit hole 132 and the second limit hole 133, and the first limit hole 132 is located right above the second limit hole 133. An annular limiting table is arranged inside the pressing piece 53, and the upper end of the extension spring 60 abuts against the annular limiting table.

When the extension spring 60 is in a compressed state, that is, the two ends of the extension spring 60 respectively abut against the top of the deformation member and the annular limiting table of the pressing member, the clamping block 711 abuts against the second limiting hole 133 and is clamped and matched with the receiving block 721, so that the pressing member 53 is positioned to position the pressing member, and the extension spring 60 cannot be reset.

When the extension spring 60 is in the natural state, the clamping block 711 abuts against the first limiting hole 132, so that the entire pitch mechanism is stabilized.

Preferably, the clamping block 711 is provided with a receiving surface 7111, the receiving surface 7111 is engaged with the outer side wall of the first elastic sheet 711, when the external force is removed, the retractable spring 60 is reset and drives the pressing member 53 to move upwards until the clamping block 711 is received at the upper side wall of the first limiting hole 132 through the receiving surface 7111, so as to limit the first elastic sheet 711 to move upwards continuously, and prevent the pressing member 53 from being ejected; moreover, the outer side wall of the clamping block 711 is an arc-shaped side, the arc-shaped side is the side which is bent inwards from top to bottom, when the first elastic sheet 71 moves downwards by pressing the part 53 downwards, the clamping block 711 smoothly transitions into the second limiting hole 133 due to the arrangement of the arc-shaped side, and the operation is more convenient and faster. The receiving block 721 is triangular, that is, the receiving block 721 has a tip and a bottom surface, the bottom surface of the receiving block 721 is disposed at the inner sidewall of the free end of the second elastic sheet 72, and the tip of the receiving block 721 faces the width direction of the cover hole, so that two inclined surfaces of the receiving block 721 are respectively disposed up and down, and the tip extends into the second limiting hole 133.

Thus, the pressing member 53 is pressed downward to move the first elastic sheet 71 downward, so that the clamping block 711 extends into the second limiting hole 133, and the bearing surface 7111 of the clamping block 711 abuts against the lower side surface of the bearing block 721, so that the pushing member is positioned, and the pushing member cannot move continuously; after the inward pushing force is applied to the bearing block 72, the bearing block 72 pushes the clamping block 71 to move inward, the clamping block 71 is separated from the bearing block 72 to move upward under the action of the telescopic spring 60, and the clamping block 71 extends into the first limiting hole 132 again under the elastic action of the clamping block 71 and is supported on the upper side wall of the first limiting hole 132.

Preferably, the upper portion of the pressing member 53 is sleeved with a foldable pressing sleeve 90, which is made by the prior art, such as a silicone sleeve or a plastic sleeve, and the bottom of the pressing sleeve 90 abuts against the head of the compass during the downward pressing process, so that the pressing sleeve 90 is folded, thereby ensuring that the pressing member 53 can be folded when pressed downward, without affecting the use, and increasing the use comfort. In addition, the upper portion of the pressing member 53 may be a pressing piece made of a soft material, such as a silicone material, and the upper side of the pressing piece may be a side made of a soft material, such as a fluff surface.

In the present invention, the pressing member 53 may be disposed on the pushing member 51.

In the present invention, the first elastic sheet 71 and the second elastic sheet 72 are made of known elastic materials, for example, the first elastic sheet 71 and the second elastic sheet 72 are plastic sheets.

Further, the aforementioned straight section 31 is a rod-shaped structure, the large end portion 32 is a sheet/block-shaped structure adapted to the internal structure of the deformation member, in this embodiment, the straight section 31 is taken as a positioning rod, and the large end portion 32 is taken as a positioning piece for example, in other words, the positioning piece includes a positioning rod and a positioning piece, the lower end of the straight section 31 is fixedly connected to the large end portion 32, the upper end of the straight section 31 is inserted into the pressing member 53, the outer diameter of the straight section 31 is smaller than the inner diameter of the pressing member 53, that is, the diameter of the hollow portion of the straight section 31, so that the straight section 31 slides up and down relative to the pressing member 53, in other words, the pressing member 53 slides up and down relative to the straight section 31, so that the movement of the straight section 31 and the pressing member 53 does not affect each other. The straight section 31 and the big head portion 32 can be an integrally formed structure or a split structure, and when the straight section 31 and the big head portion 32 are split structures, the straight section 31 and the big head portion 32 are connected with each other by a conventional known structure, such as the straight section 31 is spirally connected to the big head portion 32, and further such as a clamping structure.

Further, a lower end of an inner side wall of the pusher 51 of the pitch mechanism is provided with a pressing protrusion 513, a fitting side of the pressing protrusion 513 is a first inclined portion 5121, the fitting side refers to a side that is fitted with the first fitting section 522, the first inclined portion 5121 is arranged to be inclined upward in an axial direction (i.e., an outer-to-inner direction) close to the through hole, and the fitting side of the pressing protrusion 513 and the outer side wall of the pusher 51 are smoothly transited. Thus, the pushing member 51 is deformed inward by pressing the engaging side of the protrusion 513 to tighten the deforming member 52 inward during the downward sliding. Wherein the pressing protrusion 513 may have a ring shape; alternatively, there are a plurality of pressing projections 513, and each pressing projection 513 is arranged around the lower end of the pusher 51. Two squeeze projections 513 will be described below as an example.

Specifically, the distance locking mechanism is located in the accommodating cavity 15 of the circular gauge head 10, and the deformation member 52 of the distance locking mechanism comprises an annular portion 521 and a first matching section 522 arranged above and below, wherein the annular portion 521 is an annular structure provided with a notch 5211, such as an annular ring or an annular sheet. The notch 5211 is located at the upper portion of the annular portion 521, and the notch 5211 is used for the insertion of the straight section 31, wherein the large head portion 32 can move up and down in the annular portion 521. The annular portion 521 is formed with two end edges due to the arrangement of the notch 5211, and the two end edges of the annular portion 521 are respectively provided with the first matching sections 522, that is, the first matching sections 522 are two, and the first matching sections 522 are arranged oppositely. The large head portion 32 and the two rotating members 40 are located within the surrounding range of the annular portion 521. In this embodiment, the annular portion 521 and the first mating segment 522 are integrally formed. When the deformation element 52 is in an undeformed state, the outer side walls of the two rotation elements 40 are in clearance fit or relative rotation fit with the inner side walls of the annular portion 521 respectively.

The utility model discloses in, aforementioned two rotation pieces 40 are the rotor plate, and the shape of two rotor plates all coincide each other with the shape of annular portion 521, and two rotation pieces 40 divide the both sides of locating big head 32. The two rotating members 40 may also be other structures, such as block structures or ring structures, and the structure of the rotating member 40 is not limited in this embodiment.

The utility model discloses in, the massive structure or the lamellar structure that deformation 52 was made for adopting the elastic deformation material, if deformation 52 is plastics deformation etc..

The pushing member 51 includes a sleeve portion 511 and two second matching sections 512, the upper end of each second matching section 512 is respectively fixed at the edge of the sleeve portion 511, the sleeve portion 511 can be a block structure or a sheet structure, the sleeve portion 511 is sleeved outside the straight section 31 of the positioning member, and the specific installation structure of the sleeve portion 511 is as follows: the upper side of the sleeve portion 511 is provided with a through hole, the lower end of the pressing piece 53 is fixedly connected to the upper side of the sleeve portion 511, the through hole and the pressing piece 53 are coaxially arranged, the hollow portion of the pressing piece 53 is communicated with the through hole, the diameter of the through hole is larger than the outer diameter of the straight section 31, the straight section 31 is inserted outside the through hole so that the pushing piece 51 is arranged outside the straight section 31 in a surrounding manner, and the pushing piece 51 can slide up and down along the straight section 31. The two second fitting sections 512 are oppositely arranged and respectively disposed at two sides of the straight section 31, and the lower ends of the two second fitting sections 512 are respectively provided with the extruding convex parts 513 in a protruding manner, and the two extruding convex parts 513 are oppositely arranged. In this way, the second engaging section 512 is in press fit with the corresponding first engaging section 522 through the engaging sides of the two pressing protrusions 513 during downward sliding, so that each first engaging section 522 is drawn inward to cause the annular portion 521 to be tightened inward and deformed inward.

In this embodiment, the sleeve portion 511 and the second fitting sections 512 are integrally formed.

Preferably, in order to ensure the stability of the pushing member 51 and to avoid the pushing member 51 from shaking, the pushing member 51 is retained in the upper part of the accommodating chamber 15 of the circular gauge head 10, i.e. the shape of the upper part of the accommodating chamber 15 matches the shape of the pushing member 51.

In addition, in this embodiment, two inclined portions may be provided at positions corresponding to the two pressing protrusions 513 on the upper portion of the outer side wall of the deformation member 52, the two inclined portions are arranged oppositely, and the two inclined portions are side surfaces arranged obliquely downward from inside to outside, and at the same time, the mating sides of the two pressing protrusions 513 are not provided as inclined sides. For unfolding, the outer side walls of the first two matching sections 522 are respectively provided with the second inclined parts, so that the second matching sections 512 are respectively in extrusion fit with the corresponding first matching sections 522 through the extrusion convex parts 513 in the downward sliding process, and the first matching sections 522 are inwards closed.

Preferably, the engaging sides of the two extruding protrusions 513 are respectively provided with a first inclined portion, and the upper end of the deformation member 52 is respectively provided with a third inclined portion. For unfolding, the upper end of each first matching section 522 (i.e. the upper end of the deformation piece 52) is provided with a third inclined part 5221, the matching side of each first extrusion convex part 513 is provided with a first inclined part 5121, each third inclined part 5221 is arranged in a downward inclination manner along the direction (from inside to outside) away from the notch, each first inclined part 5121 is arranged in an upward inclination manner along the axial direction (from outside to inside) close to the through hole, and the matching sides of each first extrusion convex part 513 are respectively matched with the third inclined parts 5221 of the corresponding first matching sections 522, so that the guiding effect is achieved on one hand, and in the downward movement process of the pushing piece 51, the first matching sections 522 are extruded to enable the first matching sections 522 to be close to each other and deform.

Preferably, the notch 5211 is extended outwardly, so that the circumferential surface of the annular portion 521 is located in the range of the notch 5211 corresponding to the big head portion 32, so that the big head portion 32 can enter and exit the annular portion 521 through the notch 5211, and the sliding of the big head portion 32 up and down is not limited. Moreover, the annular portion 521 is formed with four end edges through the notch 5211, and the four end edges of the annular portion 521 are respectively provided with the first matching sections 522, that is, there are four first matching sections 522; the four first matching sections 522 are respectively grouped in pairs, and the two first matching sections 522 in the same group are matched with the two second matching sections 512 so as to ensure that the two first matching sections 522 in the same group are respectively opposite to the extrusion convex parts 513 on the two second matching sections 512 in the downward sliding process of the pushing piece 51; the four engagement sections 522 are circumferentially arranged with the straight section 31 as a center line when the shape-changing member 52 is mounted on the positioning member.

Preferably, in order to facilitate the annular portion 521 to deform inwardly when the second engaging segments 522 of the deformation element 52 are tightened inwardly, a recess 5213 is formed in the inner side wall of the annular portion 521 corresponding to the notch, the recess 5213 faces the notch, the recess 5213 is an arc-shaped recess, and the recess 5213 and the inner side wall of the annular portion 521 are in smooth transition; accordingly, a large convex part is protruded downwards at the outer side wall of the large head part 32 corresponding to the concave part 5213, and the large convex part is matched with the concave part 5213.

The process of the pressing type locking distance of the pin 21 and the lead pin 22 is as follows: when the pins 21 and the lead pins 22 are opened to a desired angle, the pressing member 53 is pressed downward to drive the pushing member 51 to slide downward relative to the straight section 31, so that the matching sides of the extrusion convex parts 513 on the two matching sections two 512 are respectively abutted against the inclined parts of the corresponding matching sections one 522, in the process of continuous downward pressing, the extension spring 60 continuously contracts, meanwhile, the matching sides of the two extrusion convex parts 513 respectively apply inward extrusion force to the corresponding matching sections one 522, so that the four matching sections one 522 are respectively closed in pairs in the mutually approaching direction, due to the plastic deformation of the deformation member under the action of external force, the annular part 521 is tightened and deformed inward under the mutual closing action of the matching sections one 522 in pairs, so that the inner side wall of the deformation member 52 is tightly attached to the outer side walls of the two rotation members 40, so that the two rotation members 40 are tightly held by the deformation member 52 and cannot rotate, and the clamping block 711 on the first elastic sheet 71 extends into the second limiting hole 133, and is in clamping fit with the bearing block 721 on the second elastic sheet 72, so as to position the pushing piece 51, so that the pin 21 and the lead foot 22 can not be opened or closed any more, thereby achieving the purpose of locking the pin 21 and the lead foot 22, and further locking the distance between the pin 21 and the lead foot 22.

The process of the push type unlocking of the pin 21 and the lead pin 22 is as follows: the lower end of the second elastic piece 72 is pressed inwards by external force to push the first elastic piece 71 to move inwards, so that the clamping block 711 on the first elastic piece 71 and the bearing block 721 of the second elastic piece 72 are separated from each other and leave the second limiting hole 133, at this time, the expansion spring 60 is not acted by external force any longer to reset the expansion spring 60, so that under the action of the expansion spring 60, the pushing piece 51 moves upwards relative to the straight section 31 to enable the deformation piece to return to the natural state again, but the first elastic piece 71 moves outwards under the action of the elasticity of the first elastic piece 71 and extends into the first limiting hole 132, so that the distance between the unlocking pin 21 and the lead foot 22 is realized, and the distance between the pin 21 and the lead foot 22 is convenient to adjust.

Preferably, a plurality of latches 41 are respectively disposed on the outer sidewalls of the two rotating members 40, and in the same rotating member 40, each latch 41 is disposed around the center of the rotating member 40, so as to increase the friction force of the two rotating members 40 with respect to the annular portion 521 when the deformation member 52 is deformed, i.e., increase the friction force of the opening and closing of the pins 21 and the leads 22, so that the annular portion 521 tightly locks the two rotating members 40, thereby ensuring that the two rotating members 40 cannot rotate.

The utility model discloses in, two rotate the piece 40 and rotate through transmission structure respectively and install in the major part portion 32 department of setting element, transmission structure specifically is: the middle portion of the large head portion 32 is provided with a bar-shaped positioning hole 321, the bar-shaped positioning hole 321 is vertically arranged, the two rotating members 40 are respectively provided with rotating holes 42 corresponding to each other, the bar-shaped positioning hole 321 corresponds to the two rotating holes 42, and the bar-shaped positioning hole 321 and the two rotating holes 42 are jointly inserted with a locking assembly, which in this embodiment includes a bolt and a nut in a screw fit. Moreover, the large head 32 is provided with two convex portions 322, the two convex portions 322 are respectively disposed on two sides of the strip-shaped positioning hole 321, the two convex portions 322 are convex points or convex columns, the two rotating members 40 are respectively provided with the member positioning holes 43, the two positioning holes 43 are both arranged along the direction close to the strip-shaped positioning hole 321, the two positioning holes 43 and the two convex portions 322 are respectively disposed in a one-to-one manner, and the two convex portions 322 are respectively inserted into the corresponding member positioning holes 43. Wherein, the two positioning holes 43 are blind holes.

Preferably, the two side walls of the annular portion 521 are respectively opened with a limiting concave portion 80, where the side walls refer to the side surfaces of the annular portion 521 that are away from each other. One of the limiting concave parts 80 is in limiting fit with the pin 21, the other limiting concave part 80 is in limiting fit with the lead foot 22, wherein the position of the one limiting concave part 80 is overlapped with the other limiting concave part 80 after rotating 180 degrees along the axis of the straight section 31, in addition, the length of the one limiting concave part 80 and the position on the annular part 521 are set according to the movable range of the pin 21, and the length of the other limiting concave part 80 and the position on the annular part 521 are set according to the movable range of the lead foot 22. Thus, the maximum opening angle of the pin 21 and the lead leg 22 is set.

The installation process of the two rotating members 40 is as follows: the bar-shaped positioning holes 321 and the two rotation holes 42 are aligned with each other, then the two protrusions 322 are inserted into the corresponding member positioning holes 43, then the bolt is inserted into one of the rotation holes 42, the bar-shaped positioning holes 321, and the other rotation hole 42 in sequence, and then the nut is screwed on the bolt, thereby restraining the large head portion 32 and the two rotation pieces within the annular portion 521 of the deformation member 52.

The opening process of the pins 21 and the lead pins 22 is as follows: when the pin 21 and the lead foot 22 are pulled, the pin 21 and the lead foot 22 both rotate around the rotation hole, the pin 21 and the lead foot 22 move oppositely, the two positioning holes 43 respectively rotate along with the pin 21 and the lead foot 22, and the two protrusions 322 are respectively limited in the corresponding positioning holes 43, so that the positioning element is driven to move upwards relative to the deformation element 52. When the pin 21 and the lead pin 22 are opened to the maximum angle, the locking assembly is located at the lower end of the strip-shaped positioning hole 321. Similarly, the closing process of the pin 21 and the lead pin 22 is the same in principle, and therefore will not be described again.

The utility model discloses in, the lock is apart from mechanism still can be other well-known structures, as long as can realize that impeller 51 moves down so that the deformation piece inwards tightens up and takes place inside deformation, holds two rotor plates tightly and makes both unable rotations. For example, the deformation member is a deformation sleeve, the pushing member is a pushing sleeve, and the pushing sleeve can be sleeved on the upper portion of the deformation sleeve, wherein an inner side wall of the pushing sleeve or the deformation sleeve is provided with an inclined side which is arranged to be inclined downward from inside to outside, so that the deformation sleeve is deformed, and the like.

The above description is only a preferred embodiment of the present invention, and all equivalent changes and modifications made within the scope of the claims of the present invention should belong to the scope of the claims of the present invention.

Claims

1. The utility model provides a push type gauge locking compasses which characterized in that: the gauge head comprises a gauge head, a stitch, a lead foot, a positioning part and a lock distance mechanism, wherein the positioning part and the lock distance mechanism are arranged in the gauge head, the positioning part comprises a straight section which slides up and down and a big head part which is connected with the straight section, rotating parts are respectively arranged at first ends of the stitch and the lead foot, the two rotating parts are respectively arranged on the big head part in a rotatable mode, the lock distance mechanism comprises a pushing part and a deformation part which is used for being tightened under the extrusion fit of the pushing part and deforming inwards, a pressing part is connected onto the pushing part, the pressing part and the pushing part are respectively arranged outside the straight section in a manner of sliding relative to the straight section, the deformation part is sleeved outside the big head part, and the two rotating parts are both positioned in the deformation part; the circular gauge is characterized by further comprising an expansion spring, the expansion spring is sleeved outside the straight section, the expansion spring is respectively tensioned between the deformation piece and the inside of the pressing piece, and the pushing piece is positioned at the head of the circular gauge through a clamping structure in the moving process of the pressing piece.

2. The push type gauge locking compass of claim 1, wherein: a first elastic sheet is arranged on the pushing piece or the pressing piece, a clamping block is arranged at the free end of the first elastic sheet, and a first limiting hole and a second limiting hole are respectively formed in the position, corresponding to the first elastic sheet, on the compass head from top to bottom; the upper part of the compass head is provided with a second elastic sheet, the free end of the second elastic sheet is provided with a bearing block matched with the clamping block in a clamping manner, the bearing block faces the second limiting hole, and the clamping structure comprises the clamping block and the bearing block;

3. The push type gauge locking compass of claim 2, wherein: the compasses head is provided with the lid hole corresponding to first flexure strip department, arrange from top to bottom in the lid hole, the compasses are overhead to be provided with the stopper corresponding to spacing hole department, the stopper will the lid hole is from last to dividing into down in proper order first spacing hole with the spacing hole of second.

4. The push type gauge compasses of claim 2 or 3, wherein: the bearing block is three horn shapes, the sharp portion court of bearing block the width direction in spacing hole arranges, be provided with on the joint block with the face is accepted to the downside joint complex of bearing block, the lateral wall of joint block is the arc side, the arc side is from last to the side of incurving extremely down.

5. The push type pitch lock compass according to any one of claims 1 to 3, wherein: the pressing piece is of a hollow rod-shaped structure, and the upper part of the pressing piece extends out of the head of the compass; the upper portion cover of pressing member is equipped with folding pressing sleeve, perhaps the upper end department of pressing member pastes and is equipped with the pressing sheet.

6. The push type pitch lock compass according to any one of claims 1 to 3, wherein: an extrusion convex part is arranged on the pushing part, and one side of the extrusion convex part corresponding to the deformation part is taken as a matching side;

7. The push type gauge locking compass of claim 6, wherein: the deformation piece includes annular portion and cooperation section one, annular portion is provided with the confession the breach that straight section passed, the both ends of annular portion are provided with along the punishment respectively cooperation section one, two rotate the piece and all be located the surrounding range of annular portion, wherein, the upper portion of deformation piece is cooperation section one.

8. The push type gauge locking compass of claim 7, wherein: the two side walls of the annular part, which are away from each other, are respectively provided with a limiting groove, the lead pin is in limiting fit with one of the limiting grooves, and the pin is in limiting fit with the other limiting groove.

9. The push type gauge locking compass of claim 7, wherein: the pushing piece comprises a sleeve part and two matching sections II which are arranged oppositely, one ends of the two matching sections II are arranged on the sleeve part respectively, the lower end of the pressing piece is connected to the upper side of the sleeve part, the sleeve part and the pressing piece are sleeved outside the straight section respectively, each matching section is divided into two groups, each matching section I in each group is matched with the same matching section II, and the other end of each matching section II is provided with the extrusion convex part respectively.

10. The push type gauge locking compass of claim 6, wherein: the outer side walls of the two rotating parts are respectively provided with a plurality of clamping teeth, and the clamping teeth are respectively arranged outside the corresponding rotating parts in a surrounding mode.