CN101084841A - Dental high-speed mobile phone press-type holding mechanism - Google Patents

Abstract

The present invention relates to a dental high-speed mobile phone pressing clamping mechanism, which comprises: a hollow rotating shaft, a cartridge and a push button arranged in the hollow rotating shaft. The push button has two grooves arranged opposite to each other, and two first protrusions are arranged adjacent to the two grooves. The two first protrusions are arranged on different sides, and the cartridge has a groove and a protrusion arranged in a complementary manner with the first joint portion. It can improve the positioning effect of the cartridge and the push button, thereby extending the service life. The present invention is suitable for dental diagnosis and treatment instruments.

Description

Dental high-speed mobile phone press-type holding mechanism

technical field

The invention relates to a press-type clamping mechanism for a high-speed dental handpiece, in particular to a press-type clamping mechanism for a high-speed dental handpiece that can improve the positioning effect of collets and push buttons.

Background technique

Generally speaking, the items that dentists diagnose and treat patients include tooth decay repair, molars, etc. Among the many diagnostic tools used for patients, mobile phones can be equipped with many diagnostic tool heads, such as drills and molar heads, so mobile phones the highest frequency of use. During the dentist's diagnosis and treatment, since most of the diagnosis and treatment tool heads must work in the patient's oral cavity, the aforementioned tool heads must be accurately and stably positioned and driven to rotate. Conversely, if the tool head comes loose during the operation of the dentist, it will cause great patient danger.

The known tool head positioning method is that a collet is installed in the hollow rotating shaft, the outer surface of the collet adjacent to one end is thicker than the other end, the aforementioned tool head is clamped in the collet, and the tool head is fixed by pressing the collet through the rotating shaft; the hollow rotating shaft There is a push button, and there is a linkage part between the push button and the collet, which can be linked to the collet to rotate with the rotating shaft; the dentist squeezes the push button to make the thicker part of the collet withdraw from the hollow rotating shaft to achieve unloading. The purpose of opening the tool head.

However, in the aforementioned technology, because the collet and the push button only rely on the linkage part to link the two, the clamping force is insufficient, so the collet may withdraw, and the tool head is not easy to be firmly fixed. Tool heads not held securely will cause wear between the tool head and the collet due to vibrations during operation. If in order to improve the bonding force between the tool head and the collet, it is necessary to increase the dimensional precision and material requirements of the collet and the tool head, and the cost will be relatively increased.

Contents of the invention

The main purpose of the present invention is to provide a high-speed dental handpiece press-type clamping mechanism, which can improve the positioning effect of the collet and the push button, thereby prolonging the service life.

In order to achieve the aforementioned purpose, the present invention adopts the following technical solutions:

A dental high-speed mobile phone press-type holding mechanism, which includes:

A hollow rotating shaft has an accommodating hole axially penetrating through it. The axial ends of the rotating shaft respectively define a first end and a second end that are relatively far away from each other. The first end has a retracted abutting portion, the abutting portion surrounds and forms a hexagonal hole;

A push button, having a first combining portion and a fixing portion integrally connected with the first combining portion, the first combining portion surrounds and forms a first combining hole;

The first combining portion has two oppositely disposed grooves away from the fixing portion, the first combining portion has two first protrusions adjacent to the two grooves, and the two first protrusions are arranged opposite to each other. On the other side, the push button has a blocking portion protruding from the surface of the fixing portion at a position adjacent to the fixing portion; the push button is accommodated in the accommodation hole of the hollow rotating shaft, and the blocking portion abuts against the first end part of the abutment part;

The fixing part cooperates with the hexagonal hole formed by the abutting part, and thus has a corresponding outer hexagonal cut surface, and the fixing part is exposed through the hexagonal hole, so that there is no gap between the push button and the hollow rotating shaft. produces a relative pivot;

A collet, accommodated in the accommodating hole of the hollow rotating shaft, the collet has a second joint part, the second joint part surrounds a second joint hole, and the second joint part has a joint with the first joint part grooves and bosses configured in a complementary manner, and the collet has a friction portion adjacent to the second joint, the thickness of the friction portion is higher than the surface of the second joint, and the collet is far away from the second joint The part has a blocking part connected with the friction part, the thickness of the blocking part is greater than the inner diameter of the accommodating hole of the hollow rotating shaft, and the blocking part abuts against the second end of the hollow rotating shaft.

The advantages of the present invention will be described below by taking the installation of a drill as an example: the drill is inserted from the second joint hole of the collet into the first joint hole of the push button, and the friction part of the collet is pressed by the second end of the hollow shaft. Make the collet fit closely with the hollow rotating shaft; similarly, the drill pin will also press against the first joint part of the push button, so that the first joint part is stretched and deformed, and resists the hollow rotating shaft, so the drill pin and the hollow rotating shaft and Good friction is obtained between the push buttons, resulting in an increased positioning effect. In addition, the convex column of the push button is embedded in the groove of the collet, and the convex column of the collet is embedded in the groove of the push button, so that the positioning between the collet and the push button is more accurate, and the transmission is more stable.

It can be seen from the above description that it can improve the positioning effect of the collet and the push button, thereby prolonging the service life.

Description of drawings

Fig. 1 is a three-dimensional appearance view of the present invention (the rotating shaft is represented by a dotted line).

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

Fig. 3 is a three-dimensional appearance view of the collet and push button of the present invention.

Fig. 4 is a schematic diagram of a partial structure of the present invention.

Fig. 5 is a schematic diagram of the implementation state of the present invention (the situation of installing a drill).

Detailed ways

Please refer to Fig. 1 to Fig. 3, the structure of the selected embodiment of the present invention is shown in the figure, which is only for illustration, and is not limited by this structure in the patent application.

The push-type clamping mechanism for the mobile phone in this embodiment includes: a hollow rotating shaft 1 , a push button 2 and a collet 3 .

The hollow rotating shaft 1 has an accommodating hole 10 axially penetrating through it, and the rotating shaft 1 defines a first end 11 and a second end 12 which are relatively far away from its axial ends respectively, and the first end 11 has A retracted abutting portion 111 surrounds a hexagonal hole 112 .

The push button 2 has a first coupling portion 21 and a fixing portion 22 integrally connected with the first coupling portion 21, and the first coupling portion 21 surrounds and forms a first coupling hole 211;

The first combining portion 21 has two oppositely disposed grooves 23 away from the fixing portion 22, the first combining portion 21 has two first protrusions 24 adjacent to the two grooves 23, and the two first The protrusions 24 are arranged on different sides from each other, and the push button 2 has a stopper 25 protruding from the surface of the fixed part 22 at a position adjacent to the fixed part 22; the push button 2 is accommodated in the hollow rotating shaft 1 The hole 10 , and the blocking portion 25 abuts against the abutting portion 111 of the first end portion 11 .

The fixing part 22 cooperates with the hexagonal hole 112 formed by the abutment part 111, thus has an outer hexagonal cut surface 221 corresponding thereto, and the fixing part 22 is exposed through the hexagonal hole 112, so that the push button 2 and the There is no relative pivoting between the two hollow shafts 1 .

The collet 3 is also accommodated in the accommodating hole 10 of the hollow rotating shaft 1, the collet 3 has a second joint portion 31, and the second joint portion 31 surrounds a second joint hole 32, the second joint The part 31 has a groove 33 and a post 34 which are complementary to the first joint part 21, and the collet 3 has a friction part 35 adjacent to the second joint part 31, and the thickness of the friction part 35 is smaller than that of the second joint part 31. The surface of the second coupling portion 31 is high, and the collet 3 is away from the second coupling portion 31 and has a blocking portion 36 connected to the friction portion 35, the thickness of the blocking portion 36 is greater than that of the accommodating hole 10 of the hollow shaft 1 inner diameter, and the blocking portion 36 abuts against the second end portion 12 of the hollow rotating shaft 1 . In the second coupling hole 32 of the collet 3 , an annular groove 37 is defined between the blocking portion 36 and the friction portion 35 along the inner peripheral surface of the second coupling hole 32 (as shown in FIG. 4 ).

Please refer to Fig. 4 to Fig. 5, taking the drill installation as an example, the drill 4 is inserted into the first combination hole 211 extending from the second combination hole 32 of the collet 3 to the first combination hole 211 of the push button 2, and the friction part 35 of the collet 3 is The second end 12 of the hollow rotating shaft 1 is pressed so that the collet 3 and the hollow rotating shaft 1 are tightly fitted; while the second joint 31 of the collet 3 is stretched by the pressing force of the drill bit 4 and resists the hollow rotating shaft 1 ; Similarly, the drill 4 will also press against the first joint 21 of the push button 2, so that the first joint 21 is stretched and deformed, and resists the hollow shaft 1, so the drill 4 and the hollow shaft 1 and the push button 2 Good friction is obtained between them, which increases the positioning effect. In addition, the protrusion 24 of the push button 2 is embedded in the groove 33 of the collet 3, and the protrusion 34 of the collet 3 is embedded in the groove 23 of the push button 2, so that the positioning between the collet 3 and the push button 2 is more accurate , more stable transmission.

If the dentist wants to withdraw the drill 4, he only needs to press the fixing part 22 of the push button 2, so that the protrusion 24 of the push button 2 presses the collet 3, and the friction part 35 of the collet 3 leaves the hollow shaft 1 The accommodating hole 10, then completes the action of retreating, and the operation is very convenient.

Claims (2)

1. A dental high-speed mobile phone press-type holding mechanism, characterized in that it includes: A hollow rotating shaft has an accommodating hole axially penetrating through it. The axial ends of the rotating shaft respectively define a first end and a second end that are relatively far away from each other. The first end has a retracted abutting portion, the abutting portion surrounds and forms a hexagonal hole; A push button, having a first combining portion and a fixing portion integrally connected with the first combining portion, the first combining portion surrounds and forms a first combining hole; The first combining portion has two oppositely disposed grooves away from the fixing portion, and the first combining portion has two first protrusions adjacent to the two grooves, and the two first protrusions are arranged at different positions from each other. side, the push button has a stop protruding from the surface of the fixed part at the position adjacent to the fixed part; the push button is accommodated in the accommodation hole of the hollow shaft, and the stop part abuts against the first end part against the part; The fixing part cooperates with the hexagonal hole formed by the abutting part, and has an outer hexagonal cut surface corresponding thereto, and the fixing part is exposed through the hexagonal hole; A collet, accommodated in the accommodating hole of the hollow rotating shaft, the collet has a second joint part, the second joint part surrounds a second joint hole, and the second joint part has a joint with the first joint part grooves and bosses configured in a complementary manner, and the collet has a friction portion adjacent to the second joint, the thickness of the friction portion is higher than the surface of the second joint, and the collet is far away from the second joint The part has a blocking part connected with the friction part, the thickness of the blocking part is greater than the inner diameter of the accommodating hole of the hollow rotating shaft, and the blocking part abuts against the second end of the hollow rotating shaft. 2. The pressing clamping mechanism of dental high-speed handpiece according to claim 1, characterized in that: in the second coupling hole of the collet, between the blocking part and the friction part along the second An annular groove is arranged on the inner peripheral surface of the combining hole.

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