CN106705779A

CN106705779A - Tape core

Info

Publication number: CN106705779A
Application number: CN201710168924.6A
Authority: CN
Inventors: 周晓刚
Original assignee: NINGBO HONGDI MEASURING TAPE INDUSTRY Co Ltd
Current assignee: NINGBO HONGDI MEASURING TAPE INDUSTRY Co Ltd
Priority date: 2017-03-21
Filing date: 2017-03-21
Publication date: 2017-05-24

Abstract

The invention relates to a tape core, comprising a core seat and a disc-like core cover, wherein the core seat comprises a cylindrical body, one end of the body is covered by a base plate, the other end of the body is open, at least three radial convex blocking pieces are arranged circumferentially at the open end, the core cover is buckled into the opening, the core cover is concavely provided with pits for clamping the blocking pieces, the outer side of each pit forms an axial convex blocking wall, and a barb buckled with the blocking wall is arranged at the tail end of the blocking piece; at least three radial convex inserts are arranged on the peripheral edge of the core cover, the inserts are arranged in the circumferential direction of the core cover, and insertion holes for inserting the inserts are formed correspondingly in the side wall of the body. Compared with the prior art, the tape core has the advantages that the core cover is connected with the core seat firmly and the core cover in stress is effectively prevented from dropping from the core seat by radial and axial connection, so that the structure of the core is firmer.

Description

A kind of measuring tape core

Technical field

The present invention relates to tape measure art, more particularly to a kind of measuring tape core.

Background technology

Tape measure generally comprises chi box, spacing chi core rotatable in chi box, the wind spring of chi in-core and wound on chi core On tape, wherein chi core includes chi core print seat and the chi core cap that can be fastened on chi core print seat, and chi core print seat include chassis and with bottom The connected cylinder of disk, chi core cap is in the form of annular discs, and its external diameter is identical with the external diameter on chassis, after chi core cap is fastened with chi core print seat, both Medial surface it is just relative.In tape measure process, now wind spring is put into the cavity of chi core print seat, then chi core cap is fastened on chi On core print seat, so as to wind spring is fixed in chi core print seat.It is provided with the edge of the cylinder of general chi core print seat and chi core cap fastening Fastening piece, the fastening piece may pass through the perforation being correspondingly disposed on chi core cap so that chi core cap is closely fastened with chi core print seat.It is existing Some fastening pieces typically have the edge of cylinder to extend radially inward to form, i.e., existing fastening piece is only capable of realizing with the cooperation of perforation Axial is spacing, and the backrush pretightning force of wind spring is larger, and during use, chi core is susceptible to footpath under the tension force effect of wind spring To deformation, so as to cause chi core cap to depart from chi core print seat.

The content of the invention

The technical problems to be solved by the invention are directed to prior art and provide a kind of chi core cap and be difficult to take off with chi core print seat From measuring tape core.

The present invention solve the technical scheme that is used of above-mentioned technical problem for：A kind of measuring tape core, including chi core print seat and circle The chi core cap of plate-like, the chi core print seat includes cylindric body, and one end of the body is covered by chassis, and the other end is opened Mouthful, the openend is circumferentially arranged the catch of at least three radial direction convexes, it is characterised in that the chi core cap is fastened on this In opening, the chi core cap corresponding position is arranged with the pit snapped in for above-mentioned catch, and the outboard end of each pit is formed with axial evagination Retaining wall, and the end of catch be provided with can with the retaining wall fasten barb；The periphery of the chi core cap is convexly equipped with along upper radial direction At least three inserted sheets, the inserted sheet is circumferentially disposed along chi core cap, and the corresponding position of described body sidewall is offered for inserted sheet insertion Jack.

Preferably, the pit and the spaced setting of inserted sheet.The connection between chi core cap and chi core print seat can so be made It is more uniformly stressed, so that the internal structure of chi core is more consolidated.

Preferably, setting breach on the side wall of the body open end and at least three pieces connections circumferentially being formed along body Piece, the end and both sides of each connection sheet is hanging, and the catch is arranged on the end of the connection sheet.Not only facilitate setting for catch Put, and the barb on catch can be made to be formed with the retaining wall on pit and be preferably connected.

Further, open up the second breach and the catch be divided into the first lamellar body and the second lamellar body in the middle part of the catch, And then barb is divided into the first coupler body and the second coupler body, accordingly, the pit is set along the outer shroud of chi core cap, the retaining wall On offer the 3rd breach and the retaining wall be divided into the first wall body and the second wall body, and first wall body and the second wall body difference Snapped connection with the first coupler body, the second coupler body.Retaining wall can so formed with barb to be more firmly connected, so that chi core The connection that lid is radially gone up with chi core print seat is more consolidated.

Further, the corresponding position with the 3rd breach is provided with convex tendon on the bottom surface of the pit, the convex tendon and pit Side wall, the first wall body and the second wall body enclose the accommodation space for setting and forming accommodating first lamellar body and the second lamellar body respectively.

Compared with prior art, the advantage of the invention is that：On the one hand, fastened by the barb on catch and retaining wall, from And cause that chi core cap diametrically forms firm connection with chi core print seat, and on the other hand, inserted sheet and this body sidewall on chi core cap On jack form slotting company so that chi core cap and chi core print seat are being axially formed firm connection；So by radially, axially On connection so that chi core cap is connected firmly with chi core print seat, is come off from chi core print seat when being prevented effectively from chi core cap stress so that chi The structure of core is more firm；Additionally, barb and the slotting company of the fastening, inserted sheet and jack of retaining wall, can increase radially resistance, this Sample can effectively prevent the radial distortion of chi core, the service life of extending ruler core.

Brief description of the drawings

Fig. 1 is the structural representation of measuring tape core in the embodiment of the present invention；

Fig. 2 is the structural representation of the other direction of Fig. 1；

Fig. 3 is the structure decomposition figure of measuring tape core in the embodiment of the present invention；

Fig. 4 is the enlarged drawing of part A in Fig. 3；

Fig. 5 is the enlarged drawing of part B in Fig. 3；

Fig. 6 is the enlarged drawing of C portion in Fig. 3；

Fig. 7 is the sectional view of measuring tape core in the embodiment of the present invention；

Fig. 8 is the enlarged drawing of D parts in Fig. 7；

Fig. 9 is the enlarged drawing of E parts in Fig. 7.

Specific embodiment

The present invention is described in further detail below in conjunction with accompanying drawing embodiment.

As shown in Fig. 1~9, a kind of measuring tape core, it includes chi core print seat 1 and discoid chi core cap 2, wherein, chi core print seat 1 Including cylindric body 11, one end of the body 11 is covered by chassis 12, another end opening.

The end of above-mentioned perforated wall is provided with the catch 3 of at least three radial direction convexes, and the catch 3 is circumferentially all provided with along opening. In the present embodiment, the catch 3 is three, specifically, is arranged at intervals with the first breach 8 on the side wall of body 11, two adjacent the This body sidewall between one breach 8 forms the hanging connection sheet 4 in end, and catch 3 is arranged on the end of the connection sheet 4.

Accordingly, above-mentioned chi core cap 2 is fastened in the openings, and the corresponding position of chi core cap 2 is arranged with and is snapped in for above-mentioned catch 3 Pit 5, the outboard end of each pit 5 is formed with the retaining wall 51 of axial evagination, and be provided with can be with the retaining wall 51 for the end of catch 3 The barb 34 of fastening.When chi core cap 2 inserts the opening of body 11, barb 34 is snapped connection with retaining wall 51, so that chi core Lid 2 and chi core print seat 1 are firmly connected being formed radially.

Further, the middle part of catch 3 opens up the second breach 33 and the catch 3 is divided into the first lamellar body 31 and the second lamellar body 32 (the first lamellar body 31 and the second lamellar body 32 are identical structure in the present embodiment), and then barb 34 is divided into the first coupler body and the Two coupler bodies (the first coupler body and the second coupler body are identical structure in the present embodiment).Accordingly, pit 5 sets along the outer shroud of chi core cap 2 Put, the 3rd breach 52 offered on retaining wall 51 and the retaining wall 51 is divided into the first wall body 511 and the second wall body 512, and this One wall body 511 and the second wall body 512 are snapped connection with the first coupler body, the second coupler body respectively.Retaining wall 51 and barb 34 can so be made Formation is more firmly connected, so that the connection that chi core cap 2 is radially gone up with chi core print seat 1 is more consolidated.

Additionally, the periphery of chi core cap 2 is convexly equipped with least three inserted sheets 6 along upper radial direction, each inserted sheet 6 is circumferential along chi core cap 2 If the corresponding position of this body sidewall offers the jack 7 for the inserted sheet 6 insertion.In the present embodiment, the inserted sheet 6 is three, and respectively Inserted sheet 6 distinguishes spaced setting with above-mentioned pit 5.When chi core cap 2 inserts the opening of body 11, each inserted sheet 6 inserts corresponding In jack 7, so that chi core cap 2 and chi core print seat 1 are firmly connected being axially formed.

Claims

1. a kind of measuring tape core, including chi core print seat (1) and discoid chi core cap (2), the chi core print seat (1) include cylindrical shape Body (11), one end of the body (11) is covered by chassis (12), another end opening, and the openend is circumferentially arranged to be had The catch (3) of at least three radial direction convexes, it is characterised in that the chi core cap (2) fastens in the openings, and the chi core cap (2) corresponding position is arranged with the pit (5) snapped in for above-mentioned catch (3), and the outboard end of each pit (5) is formed with axial evagination Retaining wall (51), and the end of above-mentioned catch (3) is provided with the barb (34) that can be fastened with the retaining wall (51)；

The periphery of the chi core cap (2) is convexly equipped with least three inserted sheets (6) along upper radial direction, and each inserted sheet (6) is circumferential along chi core cap (2) Set, the corresponding position of described body sidewall offers the jack (7) for the inserted sheet (6) insertion.

2. measuring tape core as claimed in claim 1, it is characterised in that the pit (5) and inserted sheet (6) spaced setting.

3. measuring tape core as claimed in claim 1 or 2, it is characterised in that set on the side wall of body (11) openend First breach (8) and at least three bump contacted chips (4) are circumferentially formed along body (11), the end and both sides of each connection sheet (4) hang Sky, the catch (3) is arranged on the end of the connection sheet (4).

4. measuring tape core as claimed in claim 1 or 2, it is characterised in that the second breach (33) is opened up on the catch (3) and The catch (3) is divided into the first lamellar body (31) and the second lamellar body (32), and then barb (34) is divided into the first coupler body and Two coupler bodies；

Accordingly, the pit (5) is set along the outer shroud of chi core cap (2), and the 3rd breach (52) is offered on the retaining wall (51) And the retaining wall (51) is divided into the first wall body (511) and the second wall body (512), and first wall body (511) and the second wall body (512) snapped connection with above-mentioned first coupler body, the second coupler body respectively.

5. measuring tape core as claimed in claim 4, it is characterised in that on the bottom surface of the pit (5) with the 3rd breach (52) corresponding position is provided with convex tendon (54), the side wall of the convex tendon (54) and pit (5), the first wall body (511) and the second wall Body (512) encloses the accommodation space (53) for setting and forming accommodating first lamellar body (31) and the second lamellar body (32) respectively.