A dental contra-angle machine with quick-locking grinding head

Abstract

The present invention discloses a dental bending machine with a grinding head that can be quickly locked, comprising a machine head, wherein the machine head comprises a shell and a movement, wherein the movement comprises a grinding head, and the movement is accommodated in the shell. The dental bending machine with a grinding head that can be quickly locked also comprises a locking structure, wherein the locking structure comprises a push block, wherein the push block is slidably mounted on the shell, wherein the push block is provided with a locking hole, wherein the locking hole comprises a small end and a large end, wherein the small end is connected with the large end, wherein when the grinding head is accommodated in the small end, the grinding head is locked with the shell, and when the push block moves relative to the shell to make the grinding head move from the small end to the large end, the grinding head is unlocked with the shell, and the grinding head can be detached from the shell to be replaced, and when the push block moves relative to the shell to make the grinding head move from the large end to the small end, the grinding head is quickly locked with the shell, and the operation is simple.

Description

Technical Field

[0001] The invention relates to medical equipment, in particular to a dental contra-angle machine with a grinding head that can be quickly locked. Background Art

[0002] Dental handpieces are the most common medical devices in the dental industry, and are divided into high-speed dental handpieces and low-speed dental handpieces. High-speed dental handpieces have a rotation speed of 350,000-420,000 revolutions per minute, and are mainly used for treatment and repair such as drilling and cutting; low-speed dental handpieces are mainly used for drilling and cutting treatments. Among them, low-speed handpieces are divided into straight handpieces and curved handpieces. Straight handpieces are used for grinding and polishing, and are mainly used for extraoral treatment, while curved handpieces are mainly used for intraoral treatment.

[0003] Currently, most dental handpieces are contra-angle handpieces. Existing dental low-speed contra-angle handpieces have two types of locking needle structures. The first type is a slider press locking structure, and the second type is a paddle locking structure. Both mechanisms have the problem of needle locking structure failure, resulting in needle falling off during work, and it is not easy to find the correct position when replacing the grinding head, and the efficiency of replacing the grinding head is not high. Summary of the invention

[0004] In order to overcome the deficiencies of the prior art, the present invention aims to provide a dental contra-angle machine with an easy-to-replace grinding head and quick-locking capability.

[0005] The purpose of the present invention is achieved by the following technical solutions:

[0006] A dental contra-angle machine with a quick-locking grinding head comprises a machine head, the machine head comprises a shell and a movement, the movement comprises a grinding head, the movement is accommodated in the shell, the dental contra-angle machine with a quick-locking grinding head also comprises a locking structure, the locking structure comprises a push block, the push block is slidably mounted on the shell, the push block is provided with a locking hole, the locking hole comprises a small end and a large end, the small end is communicated with the large end, when the grinding head is accommodated in the small end, the grinding head is locked with the shell, when the push block moves relative to the shell to move the grinding head from the small end to the large end, the grinding head is unlocked with the shell, and the grinding head can be detached from the shell for replacement.

[0007] Furthermore, the locking hole is gourd-shaped.

[0008] Furthermore, the shell is provided with a slide groove and a receiving hole, the slide groove and the receiving hole are communicated, the grinding head is received in the receiving hole, and the push block is slidably installed in the slide groove.

[0009] Furthermore, an extension direction of the slide groove is perpendicular to an extension direction of the receiving hole.

[0010] Further, the locking structure includes a limiting piece, the push block is provided with a fixing hole, the shell is provided with a limiting groove, the limiting piece is fixed to the fixing hole and extends into the limiting groove, the extension direction of the limiting groove is the same as the extension direction of the sliding groove, and the limiting groove limits the moving distance of the push block to prevent the push block from detaching from the shell.

[0011] Furthermore, the locking structure also includes an elastic member, and two ends of the elastic member are respectively in contact with the shell and the push block.

[0012] Furthermore, the elastic member is a spring.

[0013] Furthermore, the shell is provided with a receiving hole, the push block includes a guide column, and the elastic member is sleeved on the guide column and partially received in the receiving hole.

[0014] Furthermore, the movement also includes a bearing and a main shaft, the bearing is sleeved on the outer surface of the main shaft, the grinding head is accommodated in the main shaft, the head also includes a mounting cover, the bearing and the main shaft are located in the housing, and the mounting cover is fixed to the end of the housing to prevent the bearing and the main shaft from detaching from the housing.

[0015] Furthermore, the dental bending machine with quick locking of the grinding head also includes a bending machine body, and the machine head also includes a center transmission shaft, a flange and a fastener, the center transmission shaft is accommodated in the shell and cooperates with the bending machine body, the flange is fixed to the shell, and the fastener cooperates with the flange and is fixed to the bending machine body.

[0016] Compared with the prior art, the locking structure of the dental bending machine with quick locking of the grinding head of the present invention includes a push block, which is slidably installed on the shell, and the push block is provided with a locking hole, which includes a small end and a large end, and the small end is connected with the large end. When the grinding head is accommodated in the small end, the grinding head is locked with the shell, and when the push block moves relative to the shell to move the grinding head from the small end to the large end, the grinding head is unlocked with the shell, and the grinding head can be detached from the shell to be replaced, and when the push block moves relative to the shell to move the grinding head from the large end to the small end, the grinding head is quickly locked with the shell, and the operation is simple. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A three-dimensional diagram of a dental contra-angle machine with a quick-locking grinding head according to the present invention;

[0018] Figure 2 for Figure 1 A stereoscopic view of the dental contra-angle machine head with a quick-locking grinding head;

[0019] Figure 3 for Figure 2 Exploded view of the nose;

[0020] Figure 4 for Figure 3 A three-dimensional view of a housing of a machine head;

[0021] Figure 5 for Figure 3 A stereoscopic view of the push block of the machine head;

[0022] Figure 6 for Figure 2 A cross-sectional view of the nose of the aircraft;

[0023] Figure 7 for Figure 6 An enlarged view of the nose A.

[0024] In the figure: 10, bending machine body; 20, machine head; 21, housing; 210, mounting hole; 211, limiting groove; 212, slide groove; 213, receiving hole; 22, center transmission shaft; 23, flange; 24, fastener; 25, movement; 250, bearing; 251, grinding head; 2510, fixed end; 26, mounting cover; 27, locking structure; 270, push block; 2701, locking hole; 2702, small end; 2703, large end; 2704, fixing hole; 2705, guide column; 271, elastic member; 272, limiting member. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] It should be noted that when a component is referred to as being "fixed to" another component, it may be directly on the other component or there may be another intermediate component through which it is fixed. When a component is considered to be "connected to" another component, it may be directly connected to the other component or there may be another intermediate component at the same time. When a component is considered to be "set on" another component, it may be directly set on the other component or there may be another intermediate component at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0027] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0028] See also Figures 1 to 7 The present invention discloses a dental contra-angle machine with a quick-locking grinding head, which includes a contra-angle machine body 10 and a machine head 20.

[0029] The machine head 20 includes a housing 21 , a central transmission shaft 22 , a flange 23 , a fastener 24 , a movement 25 , a mounting cover 26 and a locking structure 27 .

[0030] The housing 21 is provided with a mounting hole 210, a limiting groove 211, a slide groove 212 and a receiving hole 213. The mounting hole 210 and the limiting groove 211 are arranged at the bottom of the slide groove 212, and the slide groove 212 is connected with the mounting hole 210 and the limiting groove 211. The extending direction of the mounting hole 210 is perpendicular to the extending direction of the slide groove 212. The extending direction of the limiting groove 211 is the same as the extending direction of the slide groove 212. The receiving hole 213 is located at one side of the limiting groove 211 and the extending direction of the receiving hole 213 is the same as the extending direction of the limiting groove 211.

[0031] The fastener 24 is a locking nut. The movement 25 includes a bearing 250, a main shaft and a grinding head 251. The bearing 250 is sleeved on the main shaft, and the grinding head 251 is accommodated in the main shaft. A fixed end 2510 is provided at the end of the grinding head 251, and the fixed end 2510 is provided with a groove. The mounting cover 26 is a nut cover.

[0032] The locking structure 27 includes a push block 270, an elastic member 271 and a limit member 272. The push block 270 is provided with a locking hole 2701 and a fixing hole 2704. The locking hole 2701 includes a small end 2702 and a large end 2703, and the diameter of the large end 2703 is larger than the diameter of the small end 2702. The small end 2702 is connected to the large end 2703. The locking hole 2701 is gourd-shaped as a whole. The fixing hole 2704 is a threaded hole. The guide column 2705 is located at the bottom of the push block 270, and the extension direction of the guide column 2705 is the same as the extension direction of the slide groove 212. The elastic member 271 is a spring. The limit member 272 is a screw.

[0033] When assembling a dental contra-angle machine with a grinding head that is quickly locked, the bearing 250 is sleeved on the outside of the main shaft, the grinding head 251 is received in the main shaft to form a movement 25, and the movement 25 is received in the mounting hole 210 of the housing 21. The mounting cover 26 is fixed to the end of the housing 21 by threads. The mounting cover 26 prevents the bearing 250 from being separated from the housing 21. The push block 270 is slidably mounted in the slide groove 212 of the housing 21. One end of the elastic member 271 is sleeved on the guide column 2705, and the other end is received in the receiving hole 213. The limiting member 272 is fixed to the fixing hole 2704 of the push block 270 and extends into the limiting groove 211. The limiting member 272 slides in the limiting groove 211 to control the sliding distance of the push block 270 relative to the housing 21 to prevent the push block 270 from being separated from the housing 21. At this time, the fixed end 2510 of the grinding head 251 is located in the locking hole 2701. The middle transmission shaft 22 is received in the housing 21 and cooperates with the contra-angle machine body 10. The flange 23 is fixed to the housing 21, and the fastener 24 cooperates with the flange 23 and is fixed to the contra-angle machine body 10. At this time, the fixed end 2510 of the grinding head 251 is located at the small end 2702, and the grinding head 251 is in a locked state.

[0034] When the grinding head 251 needs to be replaced, the push block 270 is pushed, and the push block 270 slides on the slide groove 212 of the housing 21. When the push block 270 is pushed forward, the fixed end 2510 of the grinding head 251 slides from the small end 2702 to the large end 2703. At this time, the grinding head 251 is unlocked from the housing 21. The grinding head 251 can be withdrawn from the main shaft of the bending machine movement 25 for replacement. When the push block 270 is released, the elastic member 271 will push the push block 270 back, and the newly replaced grinding head 251 moves from the large end 2703 to the small end 2702 for locking, which is easy to operate.

[0035] The above embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the present invention, which are equivalent modifications and improvements made to the above embodiments based on the essential technology of the present invention, and all of them belong to the protection scope of the present invention.

Claims

1. A dental contra-angle machine with a grinding head that can be quickly locked, comprising a machine head, the machine head comprising a housing and a movement, the movement comprising a grinding head, the movement being accommodated in the housing, characterized in that: The dental contra-angle machine with quick-locking of the grinding head also includes a locking structure, which includes a push block, which is slidably mounted on the shell, and the push block is provided with a locking hole, which includes a small end and a large end, and the small end is communicated with the large end. When the grinding head is accommodated in the small end, the grinding head is locked with the shell, and when the push block moves relative to the shell to move the grinding head from the small end to the large end, the grinding head is unlocked with the shell, and the grinding head can be detached from the shell to be replaced; The locking hole is gourd-shaped; The housing is provided with a slide groove and a receiving hole, the slide groove and the receiving hole are in communication, the grinding head is received in the receiving hole, and the push block is slidably mounted in the slide groove; The extending direction of the slide groove is perpendicular to the extending direction of the receiving hole; The locking structure includes a limiting piece, the push block is provided with a fixing hole, the shell is provided with a limiting groove, the limiting piece is fixed to the fixing hole and extends into the limiting groove, the extension direction of the limiting groove is the same as the extension direction of the sliding groove, and the limiting groove limits the moving distance of the push block to prevent the push block from detaching from the shell.

2. The dental contra-angle machine with quick-locking grinding head according to claim 1, characterized in that: The locking structure further comprises an elastic member, two ends of which are respectively in contact with the housing and the push block.

3. The dental contra-angle machine with quick-locking grinding head according to claim 2, characterized in that: The elastic member is a spring.

4. The dental contra-angle machine with a quick-locking grinding head according to claim 3, characterized in that: The housing is provided with a receiving hole, the push block comprises a guide column, the elastic member is sleeved on the guide column and partially received in the receiving hole.

5. The dental contra-angle machine with a quick-locking grinding head according to claim 1, characterized in that: The movement also includes a bearing and a main shaft, the bearing is sleeved on the outer surface of the main shaft, the grinding head is accommodated in the main shaft, the head also includes a mounting cover, the bearing and the main shaft are located in the housing, and the mounting cover is fixed to the end of the housing to prevent the bearing and the main shaft from detaching from the housing.

6. The dental contra-angle machine with a quick-locking grinding head according to claim 1, characterized in that: The dental bending machine with quick locking of the grinding head also includes a bending machine body, and the machine head also includes a center transmission shaft, a flange and a fastener. The center transmission shaft is accommodated in the shell and cooperates with the bending machine body, the flange is fixed to the shell, and the fastener cooperates with the flange and is fixed to the bending machine body.

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