阅读说明：本技术 用于高速手机的偏心夹紧型车针夹持机构 (Eccentric clamping type pin clamping mechanism for high-speed mobile phone ) 是由 解辽波 于 2019-12-12 设计创作，主要内容包括：提供一种用于高速手机的偏心夹紧型车针夹持机构,在芯轴内腔中由下至上依次设有弹簧、楔形推动件、锁紧块和上端伸出芯轴的压套,锁紧块两侧位于芯轴两侧壁上的定位口内,车针上端穿过光孔、弹簧、楔形推动件和锁紧块后伸入压套内并抵于挡销上,压套下压推动楔形推动件下移或弹簧复位推动楔形推动件上移实现锁紧块移位后对车针松开换针或偏心夹持。本发明通过压套下压推动楔形推动件下移或弹簧复位推动楔形推动件上移实现锁紧块移位后对车针松开换针或偏心夹持,达到车针的有效夹持,消除车针由于经常摩擦容易松动、打滑的弊端,避免车针向外的张力易出现变形、松动等现象,夹持可靠稳固,挡销可有效防止治疗过程中车针后退,夹持效果好。(The eccentric clamping type needle clamping mechanism for the high-speed mobile phone is characterized in that a spring, a wedge-shaped pushing piece, a locking block and a pressing sleeve of which the upper end extends out of a core shaft are sequentially arranged in an inner cavity of the core shaft from bottom to top, two sides of the locking block are located in positioning ports on two side walls of the core shaft, the upper end of a needle penetrates through a unthreaded hole, the spring, the wedge-shaped pushing piece and the locking block and then extends into the pressing sleeve and is abutted against the blocking pin, the pressing sleeve is pressed downwards to push the wedge-shaped pushing piece to move downwards or the spring resets to push the wedge-shaped pushing piece to move upwards to. The invention realizes the loosening and needle changing or eccentric clamping of the needle after the shift of the locking block by pushing the wedge-shaped pushing piece downwards by the pressing sleeve or pushing the wedge-shaped pushing piece upwards by the spring reset, thereby achieving the effective clamping of the needle, eliminating the defect that the needle is easy to loosen and skid due to frequent friction, avoiding the phenomena of deformation, looseness and the like of the outward tension of the needle, ensuring reliable and stable clamping, effectively preventing the needle from retreating in the treatment process by the stop pin and having good clamping effect.)

1. A eccentric clamping type car needle fixture for high-speed cell-phone, including pressing cover (1), dabber (3) and spring (6), its characterized in that: the mandrel (3) is of a hollow structure with an opening at the upper end, the bottom surface of the mandrel (3) is provided with a unthreaded hole (7) which is convenient for a sewing needle (9) to penetrate, a spring (6), a wedge-shaped pushing piece (5), a locking block (4) and a pressing sleeve (1) with the upper end extending out of the mandrel (3) are sequentially arranged in the inner cavity of the mandrel (3) from bottom to top, a stop pin (2) used for limiting the pressing sleeve (1) is fixed at the upper end of the mandrel (3), and the two sides of the locking block (4) are positioned in the positioning openings (8) on the two side walls of the core shaft (3), the upper end of the needle (9) passes through the unthreaded hole (7), the spring (6), the wedge-shaped pushing piece (5) and the locking block (4) and then extends into the pressing sleeve (1) and is propped against the stop pin (2), the pressing sleeve (1) is pressed downwards to push the wedge-shaped pushing piece (5) to move downwards or the spring (6) is reset to push the wedge-shaped pushing piece (5) to move upwards to realize needle replacement or eccentric clamping of the machine needle (9) by loosening after the locking block (4) is displaced.

2. The eccentric clamping type needle clamping mechanism for a high-speed hand phone according to claim 1, wherein: wedge impeller (5) constitute and adapter sleeve (5-1) and wedge (5-2) formula structure as an organic whole by adapter sleeve (5-1) of lower extreme and wedge (5-2) of locating adapter sleeve (5-1) up end border department, wedge (5-2) lateral wall is the arc structure the same with the outer circumferential wall radian of adapter sleeve (5-1) hookup location department, wedge (5-2) inside wall is the inclined plane that leans out, latch segment (4) above adapter sleeve (5-1) are located wedge (5-2) inboard, wedge impeller (5) are shifted up and are promoted latch segment (4) and move left by wedge (5-2) and clamp needle (9) after eccentric with needle (9), wedge impeller (5) move down and are separated with latch segment (4) and are loosened after the clamping force of latch segment (4) to needle (9) is eliminated to the clamp And (4) maintaining.

3. The eccentric clamping type needle clamping mechanism for a high-speed hand phone according to claim 2, wherein: the locking piece (4) are the planes that are parallel to each other for annular structure and locking piece (4) both sides wall cutting, the other both sides cambered surface of locking piece (4) is located location mouth (8) on dabber (3) both sides wall, wedge (5-2) and the setting of locking piece (4) one side plane homonymy.

4. The eccentric clamping type needle clamping mechanism for a high-speed hand phone according to claim 1, 2 or 3, wherein: one side wall of the pressing sleeve (1) is provided with a strip-shaped hole (10) which penetrates through the other side wall, and the end part of the stop pin (2) which penetrates through the through hole on the side wall of the upper end of the mandrel (3) and the strip-shaped hole (10) is fixed on the mandrel (3).

Technical Field

The invention belongs to the technical field of medical instruments, and particularly relates to an eccentric clamping type needle clamping mechanism for a high-speed mobile phone.

Background

The most common types of dental handpieces are slow handpieces and high-speed handpieces, the slow handpieces are mainly used for cleaning and polishing teeth, the high-speed handpieces are used for grinding and cutting teeth clinically, and the slow handpieces or the high-speed handpieces have very high rotating speed of a needle on a handpiece regardless of the type of the dental handpieces, particularly the high-speed handpieces, the rotating speed is usually more than 20 ten thousand revolutions per minute, so that decayed tissues can be removed by cutting teeth, porcelain teeth can be prepared, false teeth can be ground, and the like.

Disclosure of Invention

The technical problems solved by the invention are as follows: the utility model provides an eccentric clamping type car needle fixture for high-speed cell-phone, utilize toper structural feature and combine eccentric centre gripping principle, push down through the pressure cover and promote wedge impeller to move down or spring reset promotes wedge impeller to shift up and realize that the latch segment shifts back to loosen needle changing or eccentric centre gripping, reach the effective centre gripping of car needle, eliminate the car needle because frequent friction is easy not hard up, the drawback of skidding, avoid the outward tension of car needle easily to appear warping, phenomenon such as not hard up, simple structure, the modern design, the centre gripping is reliable firm, the stopper pin can effectively prevent in the treatment process that the car needle from retreating to the spacing of car needle, the centre gripping is effectual.

The technical scheme adopted by the invention is as follows: the eccentric clamping type needle clamping mechanism for the high-speed mobile phone comprises a pressing sleeve, a mandrel and a spring, wherein the mandrel is of a hollow structure with an opening at the upper end, a unthreaded hole for a needle to penetrate through is formed in the bottom surface of the mandrel, a spring, a wedge-shaped pushing piece, a locking block and a pressing sleeve with the upper end extending out of the mandrel are sequentially arranged in an inner cavity of the mandrel from bottom to top, a stop pin used for limiting the pressing sleeve is fixed at the upper end of the mandrel, two sides of the locking block are located in positioning holes in two side walls of the mandrel, the upper end of the needle penetrates through the unthreaded hole, the spring, the wedge-shaped pushing piece and the locking block and then extends into the pressing sleeve and abuts against the stop pin, and the pressing sleeve pushes the wedge-shaped pushing piece to move downwards or the spring resets to push.

Wherein, the wedge impeller comprises the adapter sleeve of lower extreme and the wedge block of locating the upper end face border department of adapter sleeve and wedge block formula structure as an organic whole, the wedge lateral wall be with the arc structure that the outer circumferential wall radian is the same of adapter sleeve hookup location department, the inclined plane of wedge inside wall for leaning out, the latch segment of adapter sleeve top is located the wedge inboard, the wedge impeller shifts up and promotes the latch segment by the wedge and remove the needle clamp after eccentric with the needle, the wedge impeller moves down and makes the latch segment loosen the centre gripping after the clamping-force elimination of latch segment to the needle.

Further, the latch segment is the plane that annular structure and latch segment both sides wall cutting were parallel to each other, the other both sides cambered surface of latch segment is located the locating hole on the dabber both sides wall, wedge and the setting of latch segment one side plane homonymy.

Furthermore, a strip-shaped hole penetrating to the other side wall is formed in one side wall of the pressing sleeve, and the end part of the stop pin penetrating through the through hole in the side wall of the upper end of the mandrel and the strip-shaped hole is fixed on the mandrel.

Compared with the prior art, the invention has the advantages that:

1. according to the technical scheme, the needle is loosened and replaced or eccentrically clamped after the locking block is shifted by pushing the wedge-shaped pushing piece downwards by the pressing sleeve or pushing the wedge-shaped pushing piece upwards by the spring reset by utilizing the characteristics of a conical structure and combining an eccentric clamping principle, so that the needle is effectively clamped, the defect that the needle is easy to loosen and slip due to frequent friction is overcome, and the phenomena that the outward tension of the needle is easy to deform and loosen and the like are avoided;

2. according to the technical scheme, the stop pin fixedly connected to the core shaft is arranged at the upper end of the pressing sleeve, so that the pressing sleeve can be prevented from falling off due to the pushing of the spring to realize a clamping function, the needle can be limited, the needle can be effectively prevented from retreating in the treatment process, and the stability of needle clamping is kept;

3. according to the technical scheme, the clamping structure formed by the wedge-shaped block with the outward-inclined inner side wall and the locking block with the planar side wall is adopted, so that locking, fixing, dismounting and replacing of the sewing needle can be quickly realized, the oral treatment time is shortened, and the oral treatment efficiency is improved;

4. this technical scheme simple structure, the modern design, the centre gripping is reliable firm, and the centre gripping is effectual, experiences effectually, and treatment process car needle stability is good.

Drawings

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

FIG. 2 is a schematic side view of the internal structure of the present invention;

FIG. 3 is a schematic view of the locking block structure of the present invention;

FIG. 4 is a schematic view of the wedge-shaped pusher member configuration of the present invention;

fig. 5 is a sectional view taken along line a-a in fig. 4.

Detailed Description

In the following, an embodiment of the present invention will be described in conjunction with fig. 1 to 5, so as to clearly and completely describe the technical solutions, and it is obvious that the described embodiment is only a part of the embodiment of the present invention, not the whole embodiment.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

An eccentric clamping type needle clamping mechanism for a high-speed mobile phone comprises a pressing sleeve 1, a mandrel 3 and a spring 6, the mandrel 3 is a hollow structure with an opening at the upper end, the bottom surface of the mandrel 3 is provided with a unthreaded hole 7 which is convenient for a needle 9 to penetrate, a spring 6, a wedge-shaped pushing piece 5, a locking block 4 and a pressing sleeve 1 with the upper end extending out of the mandrel 3 are sequentially arranged in the inner cavity of the mandrel 3 from bottom to top, a stop pin 2 used for limiting the pressing sleeve 1 is fixed at the upper end of the mandrel 3, and two sides of the locking block 4 are positioned in positioning openings 8 on two side walls of the core shaft 3, the upper end of the needle 9 passes through the unthreaded hole 7, the spring 6, the wedge-shaped pushing piece 5 and the locking block 4 and then extends into the pressing sleeve 1 and abuts against the stop pin 2, the pressing sleeve 1 is pressed downwards to push the wedge-shaped pushing piece 5 to move downwards or the spring 6 is reset to push the wedge-shaped pushing piece 5 to move upwards to realize that the needle changing or eccentric clamping is released for the sewing needle 9 after the locking block 4 is shifted; specifically, the wedge-shaped pushing piece 5 consists of a connecting sleeve 5-1 at the lower end and a wedge block 5-2 arranged at the edge of the upper end face of the connecting sleeve 5-1, the connecting sleeve 5-1 and the wedge block 5-2 are of an integrated structure, the outer side wall of the wedge block 5-2 is of an arc structure with the same radian as the outer circumferential wall at the connecting position of the connecting sleeve 5-1, the inner side wall of the wedge block 5-2 is an inclined surface inclined outwards, the locking block 4 above the connecting sleeve 5-1 is positioned at the inner side of the wedge block 5-2, the wedge-shaped pushing piece 5 moves upwards, the locking block 4 is pushed by the wedge block 5-2 to move leftwards and is eccentric with the needle 9 to clamp the needle 9, the wedge-shaped pushing piece 5 moves downwards and is separated from the locking block 4 to enable the clamping force of the locking block 4 on; specifically, the locking block 4 is of an annular structure, two side walls of the locking block 4 are cut into planes which are parallel to each other, the arc surfaces of the other two sides of the locking block 4 are positioned in positioning openings 8 on the two side walls of the mandrel 3, and the wedge-shaped block 5-2 and the locking block 4 are arranged on the same side of the plane on one side; specifically, a strip-shaped hole 10 penetrating to the other side wall is formed in one side wall of the pressing sleeve 1, and the end portion of the stop pin 2 penetrating through the through hole in the side wall of the upper end of the mandrel 3 and the strip-shaped hole 10 is fixed on the mandrel 3.

When a needle 9 is loaded, the pressing sleeve 1 is pressed downwards, the pressing sleeve 1 acts on the wedge-shaped block 5-2 to enable the wedge-shaped pushing piece 5 to move downwards, then the spring 6 is compressed, at the moment, the upper end of the needle 9 sequentially penetrates through the unthreaded hole 7, the spring 6, the wedge-shaped pushing piece 5 and the locking block 4 to extend into the pressing sleeve 1 and abut against the stop pin 2, the upper end of the needle pushes the wedge-shaped pushing piece 5 to move upwards under the action of the spring 6, the wedge-shaped block 5-2 pushes the locking block 4 to move leftwards in the moving-up process, the locking block 4 and the needle 9 are eccentric and then clamp the needle 9, when the needle 9 is disassembled (replaced), the pressing sleeve 1 is pressed downwards according to the steps to enable the wedge-shaped pushing piece 5 to move downwards to be separated from the locking block 4, and after the lateral force of the wedge-shaped pushing piece 5 to the locking block 4 disappears, and then the eccentric clamping force of the locking block 4.

The technical scheme utilizes the characteristics of a conical structure and combines an eccentric clamping principle, the pressing sleeve 1 is pressed downwards to push the wedge-shaped pushing piece 5 to move downwards or the spring 6 is reset to push the wedge-shaped pushing piece 5 to move upwards to realize the needle changing or eccentric clamping of the needle 9 after the displacement of the locking block 4, thereby achieving the effective clamping of the needle 9, eliminating the defects that the needle 9 is easy to loosen and slip due to frequent friction, avoiding the phenomena that the outward tension of the needle 9 is easy to deform and loosen, and the like, on one hand, the pressing sleeve 1 can be prevented from falling off due to the pushing of the spring 6 by arranging the stop pin 2 fixedly connected on the mandrel 3 at the upper end of the pressing sleeve 1 to realize the clamping function, on the other hand, the needle 9 can be limited, effectively preventing the needle 9 from retreating in the treatment process, keeping the clamping stability of the needle 9, and adopting a clamping structure formed by the wedge-shaped blocks 5-2 with the outward inclined, can realize fast that the locking to car needle 9 is fixed and dismantle the change to shorten oral treatment time, improve oral treatment efficiency, simple structure, the modern design, the centre gripping is reliable firm, and the centre gripping is effectual, experiences effectually, and treatment process car needle stability is good.

The above-mentioned embodiments are merely preferred embodiments of the present invention, which are not intended to limit the scope of the present invention, and therefore, all equivalent changes made by the contents of the claims of the present invention should be included in the claims of the present invention.