CN219230176U

CN219230176U - Novel clearance-increasing tappet

Info

Publication number: CN219230176U
Application number: CN202320097998.6U
Authority: CN
Inventors: 张欣珂; 郝伟江; 李建军; 徐浩杰
Original assignee: Chengdu Face To Face Health Technology Co ltd
Current assignee: Chengdu Face To Face Health Technology Co ltd
Priority date: 2023-02-01
Filing date: 2023-02-01
Publication date: 2023-06-23
Anticipated expiration: 2033-02-01

Abstract

The utility model discloses a novel gap-increasing tappet blade, which comprises a shell and a tappet, wherein a cavity for accommodating the tappet is formed in the shell; the tappet limiting device is arranged in the shell and can move relative to the shell, and when the tappet limiting device moves to a working position, the tappet limiting device clamps the tappet which cannot be taken out from the shell; when the tappet limiting device moves to the non-working position, the tappet limiting device does not clamp the tappet, and the tappet can be taken out from the shell.

Description

Novel clearance-increasing tappet

Technical Field

The utility model relates to the technical field of medical equipment, in particular to a novel clearance-increasing sharp edge applied to dentistry.

Background

The gap increasing means that the gap between the tooth and the alveolar bone wall is mechanically promoted to increase, the connection between the tooth and the alveolar bone is separated, the resistance of the crown, the neck or the root is reduced, and the function of preparing space for the insertion of the dental elevator and the supporting point can be also realized.

Most of the existing gap increaser is manual and some electric, for example, chinese patent document 200510031849.6 discloses an ultrasonic gap increaser, which utilizes ultrasonic waves to drive a tappet to vibrate at high frequency so as to expand tooth gaps.

But other implementations are possible in addition.

Disclosure of Invention

The utility model aims to provide a novel gap-increasing tappet blade, which adopts a novel structure to enable the tappet blade to work at high frequency so as to expand tooth gaps.

In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:

a novel gap-increasing tappet blade comprises a shell and a tappet, wherein a cavity for accommodating the tappet is formed in the shell, one end of the tappet is inserted into the shell and can reciprocate in the shell along the axial direction of the shell, a reciprocating piece is arranged in the shell, and the reciprocating piece hits the tappet; the tappet limiting device is arranged in the shell and can move relative to the shell, and when the tappet limiting device moves to a working position, the tappet limiting device clamps the tappet which cannot be taken out from the shell; when the tappet limiting device moves to the non-working position, the tappet limiting device does not clamp the tappet, and the tappet can be taken out from the shell.

As a preferred mode, the reciprocating driving piece is a cylinder, and a piston rod of the cylinder stretches and moves to hit the tappet.

As a preferred mode, the tappet limiting device comprises a directional screw sleeve provided with external threads, the inner wall of a shell is provided with internal threads, the directional screw sleeve is in threaded connection with the shell, a channel for inserting the tappet is arranged on the directional screw sleeve, a first limiting channel is arranged on the directional screw sleeve, a second limiting channel is arranged in the shell, the radial cross-section structures of the first limiting channel and the second limiting channel are identical, the projection of the first limiting channel in the axial direction rotates for 90 degrees and then coincides with the second limiting channel, and the radial cross-section structure of the first limiting channel is of a non-circular structure; one end of the tappet inserted into the shell is provided with a limiting section, the radial cross-sectional structure of the limiting section is the same as that of the first limiting channel and the second limiting channel,

when the tappet limiting device is positioned at the working position, one end of the limiting section is inserted into the second limiting channel, and a gap smaller than the length of the second limiting channel is formed between the other end of the limiting section and the end face of the first limiting channel;

when the tappet limiting device is positioned at the working position, the limiting section is separated from the second limiting channel; the distance between the opposite surfaces of the first limiting channel and the second limiting channel is not smaller than the length of the limiting section.

As a preferable mode, the shell comprises an outer taper sleeve and a locking screw sleeve capable of rotating relative to the outer taper sleeve, the locking screw sleeve is in threaded connection with the directional screw sleeve, a guide groove is further formed in the outer wall of the directional screw sleeve, and a guide strip matched with the guide groove is arranged in the shell.

As a preferred mode, the shell further comprises an inner taper sleeve, the inner taper sleeve is positioned in the outer taper sleeve, one end of the locking screw sleeve extends into the outer taper sleeve and is positioned between the outer taper sleeve and the inner taper sleeve, and the second limiting channel is arranged on the inner taper sleeve.

As a preferred form, the guide strip is provided on the inner cone sleeve.

Compared with the prior art, the method has the following beneficial effects: the utility model provides a pneumatically controlled blade lifting structure, which ensures that a blade lifting can be limited in a shell and has a back and forth movement space through the cooperation of a limiting section and a limiting channel, and the blade lifting can be detached and is convenient to disinfect and clean.

Drawings

Fig. 1 is a cross-sectional view of the present utility model.

Fig. 2 is a schematic structural view of the inner cone sleeve.

Fig. 3 is a schematic structural view of the directional nut.

Fig. 4 is a schematic structural view of the tappet.

Fig. 5 is a cross-sectional view of the directional insert.

Wherein reference numerals are as follows: the novel high-pressure air cylinder comprises a 1-tappet, a 2-locking screw sleeve, a 3-directional screw sleeve, a 4-inner taper sleeve, a 5-outer taper sleeve, a 6-striking head, a 7-cylinder body, an 8-air source connector, a 9-guide strip, a 10-second limiting channel, a 11-guiding groove, a 12-limiting section and a 13-first limiting channel.

Detailed Description

The utility model aims to overcome the defects of the prior art and provides a novel clearance-increasing tappet, and the utility model is further described in detail below with reference to the embodiment.

Example 1

A novel clearance-increasing tappet blade comprises a tappet head 1, an outer cone sleeve 5, a locking screw sleeve 2, a directional screw sleeve 3, an inner cone sleeve 4, a cylinder body 7, a piston rod, an air source connector 8, an air outlet pipe and an air inlet pipe.

The outer taper sleeve 5 is a cylindrical cavity structure with front and rear openings. The front end of the outer taper sleeve 5 is provided with a circle of annular limiting table extending towards the axis, and the rear end of the locking screw sleeve 2 is provided with a limiting bulge at one end of the outer edge ring. The rear end of the locking screw sleeve 2 stretches into the front end of the outer taper sleeve 5, and the limiting bulge is blocked by the annular limiting table, so that the locking screw sleeve 2 cannot be separated from the outer taper sleeve 5. The inner taper sleeve 4 is further arranged in the outer taper sleeve 5, and the limiting protrusion of the locking screw sleeve 2 is positioned between the annular limiting table of the outer taper sleeve 5 and the end face of the inner taper sleeve 4, so that the locking screw sleeve 2 cannot be displaced in the axial direction of the outer taper sleeve 5, but the locking screw sleeve 2 can rotate relative to the outer taper sleeve 5.

The cutting edge of the front end of the tappet 1, the rear end of the tappet 1 is provided with a limiting section 12, and the cross-section structure of the limiting section 12 is not round.

The inner wall of the locking screw sleeve 2 is provided with an internal thread, the outer wall of the directional screw sleeve 3 is provided with an external thread, and the locking screw sleeve 2 is in threaded connection with the directional screw sleeve 3. The locking screw sleeve 2 is provided with a channel which axially penetrates through the body of the locking screw sleeve for the tappet 1 to pass through.

Specifically, a first limiting channel 13 is arranged on a channel of the locking screw sleeve 2 penetrating through the body; the front end of the inner taper sleeve 4 is provided with a second limiting channel 10. The radial sectional structure of the first limiting channel 13 and the second limiting channel 10 is identical to the limiting section 12 of the tappet 1. The projection of the first limiting channel 13 in the axial direction rotates 90 degrees and then coincides with the second limiting channel 10 (the projection of the first limiting channel 13 and the second limiting channel 10 are in cross staggered arrangement).

The outer wall of the directional screw sleeve 3 is also provided with a guide groove 11 along the axial direction, and the front end of the inner cone sleeve 4 is also provided with a guide strip 9 which stretches into the locking screw sleeve 2 and is matched with the guide groove 11. The guide groove is provided with a limiting part, so that the guide strip 9 cannot be separated from the guide groove.

When the tappet 1 is installed and can work, at this time, one end of the limiting section 12 of the tappet 1 is inserted into the second limiting channel 10, and a small gap is formed between the other end of the limiting section 12 of the tappet 1 and the end face of the first limiting channel 13 (the gap is far smaller than the length of the second limiting channel 10, and is used as a reciprocating space when the tappet 1 works). Because the first limiting channel 13 and the second limiting channel 10 are arranged in a cross staggered manner, the limiting section 12 cannot pass through the first limiting channel 13 and cannot be taken out from the directional swivel nut 3.

When the tappet 1 is to be taken out, the locking screw sleeve 2 is rotated, the locking screw sleeve 2 is meshed with the directional screw sleeve 3, but the guide groove of the locking screw sleeve 2 is matched with the guide strip 9, the guiding locking screw sleeve 2 cannot rotate and can only axially displace, so that the distance between the opposite end surfaces of the first limiting channel 13 and the second limiting channel 10 becomes far (namely, the distance is not smaller than the length of the limiting section 12 of the tappet 1). At this time, the limiting section 12 can be pulled out from the second limiting channel 10 and is located between the two opposite end faces, and the dental tappet is rotated for 90 degrees at this time, so that the limiting section 12 can pass through the first limiting channel 13, and the tappet 1 can be pulled out for disinfection and cleaning.

During installation, the tappet 1 is firstly passed through the first limiting channel 13 and then rotated 90 degrees according to the reverse operation described above, so that the limiting section 12 is inserted into the second limiting channel 10, and then the locking nut is reversely rotated to return the locking screw sleeve 2, so that the tappet 1 cannot be pulled out.

Further, an air cylinder is further arranged in the inner taper sleeve 4, a piston rod of the air cylinder is connected with the striking head 6, and the striking head 6 faces the second limiting channel 10 (when the tappet 1 is installed, the rear end face of the tappet 1 should exceed the second channel, so that the rear end face of the tappet 1 can be in contact with the striking head 6).

The rear end of the outer taper sleeve 5 is provided with an internal thread, the outer wall of the rear part of the air source connector 8 is provided with an external thread, and the outer taper sleeve 5 is in threaded connection with the air source connector 8. The front part of the air source joint 8 is provided with external threads, and the front size of the air source joint 8 is smaller than the rear size. The inner wall of the rear end of the inner taper sleeve 4 is provided with an internal thread, and the air source joint 8 is in threaded connection with the inner taper sleeve 4. After the air source connector 8 is installed in a threaded connection mode, an air inlet channel and an air outlet channel of the air inlet pipe and the air outlet pipe are arranged on the air source connector 8 and just butt against the air inlet channel and the air outlet channel of the air cylinder, and the air source connector 8 presses against the air cylinder. Because the inner wall of the inner taper sleeve 4 is also provided with a circle of cylinder placement steps, the cylinder is propped between the cylinder joint and the placement steps, and the position is stable.

The working principle of the embodiment is as follows: the air inlet pipe on the air source joint 8 is connected to an air source, the air source supplies air to the air cylinder, and the piston rod performs a reciprocating linear motion, so that the tappet 1 is hit, the tappet 1 is placed at a tooth gap, and the gap between teeth and the bone wall of a tooth socket is increased under the action of the edge end of the tappet 1. The force of the spring back of the tappet 1 is the reaction force given to the tappet 1 by the teeth. The cylinder continuously works to make the dental elevator strike in a reciprocating way.

The present utility model can be well implemented according to the above-described embodiments. It should be noted that, based on the above structural design, even if some insubstantial modifications or color-rendering are made on the present utility model, the essence of the adopted technical solution is still the same as the present utility model, so it should be within the protection scope of the present utility model.

Claims

1. The novel gap-increasing tappet blade is characterized by comprising a shell and a tappet, wherein a cavity for accommodating the tappet is formed in the shell, one end of the tappet is inserted into the shell and can reciprocate in the shell along the axial direction of the shell, a reciprocating piece is arranged in the shell, and the reciprocating piece hits the tappet; the tappet limiting device is arranged in the shell and can move relative to the shell, and when the tappet limiting device moves to a working position, the tappet limiting device clamps the tappet which cannot be taken out from the shell; when the tappet limiting device moves to the non-working position, the tappet limiting device does not clamp the tappet, and the tappet can be taken out from the shell.

2. The novel gap-increasing tappet of claim 1, wherein the reciprocating driving member is a cylinder, and the piston rod of the cylinder moves in a telescopic manner to strike the tappet.

3. The novel gap-increasing tappet according to claim 1, wherein the tappet limiting device comprises a directional screw sleeve provided with external threads, the inner wall of the housing is provided with internal threads, the directional screw sleeve is in threaded connection with the housing, a channel for inserting the tappet is arranged on the directional screw sleeve, a first limiting channel is arranged on the directional screw sleeve, a second limiting channel is arranged in the housing, the radial cross-section structures of the first limiting channel and the second limiting channel are identical, the projection of the first limiting channel in the axial direction rotates 90 degrees and then coincides with the second limiting channel, and the radial cross-section structure of the first limiting channel is a non-circular structure; one end of the tappet inserted into the shell is provided with a limiting section, the radial cross-sectional structure of the limiting section is the same as that of the first limiting channel and the second limiting channel,

4. The novel gap-increasing tappet according to claim 3, wherein the housing comprises an outer taper sleeve and a locking screw sleeve capable of rotating relative to the outer taper sleeve, the locking screw sleeve is in threaded connection with the directional screw sleeve, a guide groove is further formed in the outer wall of the directional screw sleeve, and a guide strip matched with the guide groove is arranged in the housing.

5. The novel gap-increasing tappet of claim 4, wherein the housing further comprises an inner sleeve, the inner sleeve is positioned in the outer sleeve, one end of the locking sleeve extends into the outer sleeve and is positioned between the outer sleeve and the inner sleeve, and the second limiting passage is positioned on the inner sleeve.

6. The novel increased clearance stiffening blade of claim 5, wherein the guide bar is disposed on the inner cone sleeve.