CN211213587U

CN211213587U - Novel pressing shaft

Info

Publication number: CN211213587U
Application number: CN201920456428.5U
Authority: CN
Inventors: 李成军
Original assignee: Foshan City Duoyimei Medical Equipment Co ltd
Current assignee: Foshan City Duoyimei Medical Equipment Co ltd
Priority date: 2019-04-07
Filing date: 2019-04-07
Publication date: 2020-08-11
Anticipated expiration: 2029-04-07

Abstract

The utility model discloses a novel press shaft, the bearing post of the column axle sleeve form that link up including both ends, the inner wall indent of bearing post forms the spacing space of installation, the spacing space from the bottom up of installation is overlapped in proper order and is equipped with elastic component, holder, compresses tightly piece and button. The utility model discloses a structural design of open flume type has simplified structure and operation, has improved the degree of safety, has rational in infrastructure, elasticity, pressing force, add the controllable advantage of holding power, take self-locking function, only need little elasticity just can avoid flying the needle, press down comfortablely simultaneously, concentricity between the part is high, the effectual mechanical vibration who prevents the during operation.

Description

Novel pressing shaft

Technical Field

The utility model relates to an oral medical instrument field especially relates to a novel pressing shaft.

Background

The pressing shaft is one of the key accessories of a dental handpiece which is a common medical instrument in the department of stomatology. Currently, there are two ways of clamping the shaft on the market:

1. a slotted pressing shaft, for example, a dental handpiece pressing shaft disclosed in patent document with publication number CN207575262U, includes a shaft core, in the shaft core, a through hole is axially provided, a clamping piece for clamping a grinding needle is provided in the shaft core, a pressing member is provided at the upper end of the clamping piece, the clamping piece is a clamping tube, a convex part for clamping the grinding needle is provided on the inner wall of the upper end of the clamping tube, a cut angle is provided on the inner edge of the top surface of the clamping tube, a cut angle is provided on the outer edge of the bottom surface of the pressing member, a gap is provided between the upper end of the clamping tube and the through hole of the shaft core, a slot is provided on the side surface of the upper end of the clamping tube, and the gap and the opening allow the. However, when the clip is clamped, the clip is easily deformed without a protection device, and a needle-flying medical accident is easily caused.

2. Spring type pressing shaft, for example, a novel pressing shaft of a dental handpiece disclosed in patent document CN203749609U, comprising: the car needle, fixed cover, the spring, the centre gripping post, the grip block, the overcoat, the centre gripping post on be equipped with two centre gripping mouths, two centre gripping mouths are equipped with two mobilizable grip blocks, grip block and centre gripping mouth coincide each other, the grip block inner wall be equipped with unsmooth texture, the thickness of grip block from the one end to the other end that leans on the spring for the formula design that diminishes gradually, overcoat inner wall diameter from the one end of the centre gripping post of packing into to the other end for the formula design that diminishes gradually. When the clamping block is in clamping action, needle flying accidents need to be avoided, larger elastic force is needed to realize the needle flying accidents, and clamping force is not controlled when the elastic force is too large, so that the needle is taken tightly, meanwhile, the whole device is complex in structure, low in yield and too high in manufacturing cost.

SUMMERY OF THE UTILITY MODEL

The utility model discloses an overcome above-mentioned prior art at least one defect (not enough), provide a novel axle of pressing, the structural design through the fluting has simplified structure and operation, has improved the degree of safety, has rational in infrastructure, elasticity, pressing force, add the controllable advantage of holding power, take self-locking function, only need little elasticity just can avoid flying the needle, press down comfortable simultaneously, concentricity between the part is high, the effectual mechanical oscillation who prevents the during operation.

In order to solve the technical problem, the technical scheme of the utility model as follows:

the utility model provides a novel pressing shaft, includes the bearing post of the column axle sleeve shape that both ends link up, the inner wall indent of bearing post forms the spacing space of installation, the spacing space from the bottom up of installation overlaps in proper order and is equipped with elastic component, holder, compresses tightly piece and button spare, the axis of bearing post, the spacing space of installation, elastic component, holder, compressing tightly piece and button spare is on a straight line. The clamping piece can move along the installation limiting space, and the button piece can move along the pressing piece and the installation limiting space; the peripheral wall of the clamping piece can be elastically deformed along the radial direction of the clamping piece so as to realize clamping and loosening actions, the pressing piece and the elastic assembly are respectively positioned at the upper end and the lower end of the installation limiting space, and the button piece is sleeved in the pressing piece and partially extends out of the upper end surface of the bearing column; the elastic assembly forms tension to enable the clamping piece to have a trend of moving towards the pressing piece, so that the pressing piece is enabled to jack the clamping piece to enable the peripheral wall of the clamping piece to be elastically deformed inwards along the radial direction of the peripheral wall, and clamping action of the clamping piece is achieved; pressing the button member causes the button member to have a tendency to move toward the holder member, thereby causing the button member to urge against the holder member to elastically deform the peripheral wall of the holder member radially outwardly to effect release of the holder member.

As preferred technical scheme, the holder include by with basal portion and the clamping function portion of elastic component contact constitute, the clamping function portion with form the clearance that can carry out elastic deformation between the inner wall of bearing post.

As preferred technical scheme, the internal diameter of grip function portion is less than the apparatus that needs the centre gripping, makes grip function portion utilizes the preliminary centre gripping of the elastic deformation of self to need the apparatus of centre gripping.

As preferred technical scheme, the utility model discloses follow the up end of the perisporium of holder forms first interior concave surface and the first protruding face of cross-section for "V" shape, the number of first interior concave surface and first protruding face is two respectively, first interior concave surface is located the centre, and first protruding face is located both sides, first interior concave surface and first protruding face form the structure that the interface is "M" form jointly, follow the lower extreme facial features of the perisporium of compressing tightly the piece forms the second interior concave surface that the cross-section is "V" shape, the number of second interior concave surface is two, forms the second protruding face that the cross-section is "V" shape along the lower extreme facial features of the perisporium of button spare, the second interior concave surface with the second concave surface staggers each other to do not influence with first interior concave surface and first protruding face complex action, the number of second protruding face is two, first interior concave surface and second protruding face cooperation make the holder radially outwards elastic deformation in order to realize with real The action of releasing the clamping piece; the first protruding surface and the second concave surface are matched to enable the peripheral wall of the clamping piece to be elastically deformed inwards along the radial direction of the peripheral wall so as to realize the clamping action of the clamping piece.

As preferred technical scheme, be equipped with the slotted hole on the perisporium of holder, it is concrete, be equipped with a groove that runs through the perisporium of holder downwards from the bottom of following first interior concave surface to do benefit to the elastic deformation of the perisporium of holder, thereby be convenient for the action that presss from both sides tightly and loosen of holder.

As an optimized technical scheme, the utility model discloses elastic component is the spring.

As a preferred technical scheme, the inner diameter of the clamping function part of the utility model is smaller than the instrument to be clamped; the tail end of the slotted hole is round, peach heart-shaped or sector.

Compared with the prior art, the utility model discloses technical scheme's beneficial effect is:

the utility model discloses a structural design of open flume type has simplified structure and operation, has improved the degree of safety, has rational in infrastructure, elasticity, pressing force, add the controllable advantage of holding power, take self-locking function, only need little elasticity just can avoid flying the needle, press down comfortablely simultaneously, concentricity between the part is high, the effectual mechanical vibration who prevents the during operation.

Drawings

The accompanying drawings, which form a part of the present application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 is a sectional view of the present invention.

Fig. 2 is an exploded view of the present invention.

Detailed Description

The following is a detailed description of the present invention with reference to specific preferred embodiments, and it should not be understood that the embodiments of the present invention are limited to these descriptions, and it should be noted that the features of the examples and examples in the present application may be combined with each other without conflict.

With reference to fig. 1 and 2, the novel pressing shaft of the present embodiment includes a cylindrical sleeve-shaped bearing column 1 with two through ends, an installation limiting space 1a is formed by an inner wall of the bearing column being concave, and an elastic component 2, a clamping component 3, a pressing component 4 and a button component 5 are sequentially sleeved in the installation limiting space from bottom to top; the peripheral wall of the clamping piece can be elastically deformed along the radial direction of the clamping piece so as to realize clamping and loosening actions, the pressing piece and the elastic assembly are respectively positioned at the upper end and the lower end of the installation limiting space, and the button piece is sleeved in the pressing piece and partially extends out of the upper end surface of the bearing column; the elastic assembly forms tension to enable the clamping piece to have a trend of moving towards the pressing piece, so that the pressing piece is enabled to jack the clamping piece to enable the peripheral wall of the clamping piece to be elastically deformed inwards along the radial direction of the peripheral wall, and clamping action of the clamping piece is achieved; pressing the button member causes the button member to have a tendency to move toward the holder member, thereby causing the button member to urge against the holder member to elastically deform the peripheral wall of the holder member radially outwardly to effect release of the holder member.

As a preferred embodiment, the clamping member of this embodiment comprises a base portion 31 contacting the elastic component and a clamping function portion 32, and an elastically deformable gap is formed between the clamping function portion and the inner wall of the bearing column. The circumferential wall of the clamping piece is provided with a slotted hole 3a, and specifically, the slotted hole is formed in the circumferential wall of the clamping piece in a downward penetrating mode along the bottom end of the first concave surface. The inner diameter of the clamping function part is smaller than that of an instrument to be clamped; the tail end of the slotted hole is round, peach heart-shaped or sector.

As a preferable embodiment, the present embodiment forms a first inner concave surface 3b and a first protruding surface 3c with a "V" shaped section along the upper end surface of the peripheral wall of the clamping member, a second inner concave surface 4a with a "V" shaped section along the lower end surface of the peripheral wall of the pressing member, and a second protruding surface 5a with a "V" shaped section along the lower end surface of the peripheral wall of the button member, and the first inner concave surface and the second protruding surface cooperate to make the peripheral wall of the clamping member elastically deform outwards along the radial direction thereof to realize the action of loosening the clamping member; the first protruding surface and the second concave surface are matched to enable the peripheral wall of the clamping piece to be elastically deformed inwards along the radial direction of the peripheral wall so as to realize the clamping action of the clamping piece.

In a preferred embodiment, the elastic component is a spring.

To the utility model belongs to the technical field of ordinary technical personnel, do not deviate from the utility model discloses under the prerequisite of design, can also make a plurality of simple deductions or replacement, all should regard as belonging to the utility model discloses a protection scope.

Claims

1. The novel pressing shaft is characterized by comprising a cylindrical shaft sleeve-shaped bearing column with two through ends, wherein the inner wall of the bearing column is recessed inwards to form an installation limiting space, and an elastic component, a clamping piece, a pressing piece and a button piece are sequentially sleeved in the installation limiting space from bottom to top; the peripheral wall of the clamping piece can be elastically deformed along the radial direction of the clamping piece so as to realize clamping and loosening actions, the pressing piece and the elastic assembly are respectively positioned at the upper end and the lower end of the installation limiting space, and the button piece is sleeved in the pressing piece and partially extends out of the upper end surface of the bearing column; the elastic assembly forms tension to enable the clamping piece to have a trend of moving towards the pressing piece, so that the pressing piece is used for pressing the clamping piece to enable the peripheral wall of the clamping piece to be elastically deformed inwards along the radial direction of the peripheral wall so as to realize the clamping action of the clamping piece; the button member is pressed to cause the button member to have a tendency to move toward the holding member, so that the button member abuts against the holding member to elastically deform the peripheral wall of the holding member radially outwardly to effect the releasing action of the holding member.

2. The novel pressing shaft as claimed in claim 1, wherein the clamping member comprises a base portion contacting the elastic member and a clamping function portion, and an elastically deformable gap is formed between the clamping function portion and an inner wall of the bearing column.

3. The novel pressing shaft as claimed in claim 1, wherein a first concave surface and a first convex surface with a V-shaped section are formed along the upper end surface of the peripheral wall of the clamping member, a slot hole is formed on the peripheral wall of the clamping member and penetrates downwards along the bottom end of the first concave surface, a second concave surface with a V-shaped section is formed along the lower end surface of the peripheral wall of the pressing member, a second convex surface with a V-shaped section is formed along the lower end surface of the peripheral wall of the button member, and the first concave surface and the second convex surface are matched to enable the peripheral wall of the clamping member to be elastically deformed outwards along the radial direction of the peripheral wall of the button member so as to realize the action of loosening the clamping member; the first protruding surface and the second concave surface are matched to enable the peripheral wall of the clamping piece to be elastically deformed inwards along the radial direction of the peripheral wall so as to realize the clamping action of the clamping piece.

4. The novel pressing shaft as claimed in claim 2, wherein the inner diameter of the clamping function part is smaller than that of the instrument to be clamped.

5. The novel pressing shaft as claimed in claim 3, wherein the slot ends in a circular, heart-shaped or sector shape.

6. The novel pressing shaft as claimed in claim 1, wherein the elastic member is a spring.

7. The novel pressing shaft as claimed in claim 1, wherein the axes of the bearing column, the installation limiting space, the elastic component, the clamping member, the pressing member and the button member are aligned.