CN217724014U - Be used for dentistry chair balance arm to press from both sides tight damping structure of transferring - Google Patents
Be used for dentistry chair balance arm to press from both sides tight damping structure of transferring Download PDFInfo
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- CN217724014U CN217724014U CN202221918115.5U CN202221918115U CN217724014U CN 217724014 U CN217724014 U CN 217724014U CN 202221918115 U CN202221918115 U CN 202221918115U CN 217724014 U CN217724014 U CN 217724014U
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- balance arm
- balance
- shaft sleeve
- pressure piece
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Abstract
The utility model relates to a be used for tight damping structure of transferring of dentistry chair balance arm clamp, include: a balance shaft arm; the shaft sleeve is sleeved on the balance shaft arm and can adjust the clamping force; the shaft sleeve hoop is sleeved on the outer edge of the shaft sleeve and provided with an opening, and at least one side edge of the opening is provided with a stress part which applies pressure to the stress part to adjust the inner diameter of the shaft sleeve hoop so as to enable the shaft sleeve hoop to be shrunk or loosened; the balance arm sleeve is connected with the shaft sleeve clamp inside in a sleeved mode, a pressure piece is arranged in the balance arm sleeve, the end portion of the pressure piece is in contact with the stress portion of the shaft sleeve clamp, the pressure piece can be arranged in the balance arm sleeve in an adjustable mode, the position of the pressure piece in the balance arm sleeve is changed, and the pressure of the pressure piece on the stress portion can be adjusted. A be used for dentistry chair balance arm to press from both sides tight accent damping structure, the axle sleeve atress is even, the bump that prevents that axle sleeve plastic deformation from forming can be along with the increase of use number of times and wearing and tearing and lead to the not long problem of axle sleeve life.
Description
Technical Field
The utility model belongs to the technical field of damping adjustment structure and specifically relates to a be used for tight damping adjustment structure of dentistry chair balance arm clamp.
Background
The dental chair is provided with a plurality of transmission adjusting structures, such as backrest adjustment, balance arms commonly used in the transmission adjusting structures, and balance arm damping adjusting structures.
Disclosure of Invention
The utility model discloses an overcome the problem that exists among the above-mentioned, provide one kind and be used for the tight damping structure of transferring of dentistry chair balance arm clamp, the axle sleeve atress is even, prevents that the bump that axle sleeve plastic deformation formed from can wearing and tearing and lead to the not long problem of axle sleeve life along with the increase of use number of times.
The utility model provides a technical scheme that its technical problem adopted is: a balance arm clamp damping adjustment structure for a dental chair, comprising: a balance shaft arm;
the shaft sleeve is sleeved on the balance shaft arm and can adjust the clamping force;
the shaft sleeve hoop is sleeved on the outer edge of the shaft sleeve and provided with an opening, and at least one side edge of the opening is provided with a stress part, so that the internal diameter of the shaft sleeve hoop can be adjusted by applying pressure to the stress part, and the shaft sleeve hoop is contracted or loosened;
the balance arm sleeve is used for sleeving the shaft sleeve clamp inside, a pressure piece is arranged in the balance arm sleeve, the end part of the pressure piece is in contact with the stress part of the shaft sleeve clamp, the pressure piece can be adjustably arranged in the balance arm sleeve, the position of the pressure piece in the balance arm sleeve is changed, and the pressure of the pressure piece on the stress part can be adjusted.
Preferably, two ends of the opening of the shaft sleeve hoop are respectively provided with limiting lugs protruding outwards, and the limiting lugs on one side form the stress part.
Preferably, the balance arm sleeve is provided with a notch corresponding to the limiting lug, two sides of the notch are provided with positioning walls protruding outwards, and the positioning walls on the two sides are respectively attached to the two limiting lugs; the pressure piece is arranged on one side of the positioning wall, and the pressure piece exerts thrust on the stress part after penetrating through the positioning wall.
Preferably, the positioning wall on one side is screwed with the pressure piece, and the positioning wall on the other side is fixed with the limit lug attached to the positioning wall through a screw.
Preferably, the shaft sleeve is of an open structure, and the shaft sleeve can contract or expand along the open part after being stressed, so that the inner diameter is changed.
Preferably, the outer edge of the shaft sleeve is provided with a positioning bump, the shaft sleeve hoop is provided with a positioning groove, and the positioning bump is clamped into the positioning groove.
Preferably, the balance arm sleeve further comprises an extension sleeve sleeved on the outer edge of the balance shaft arm.
Preferably, the extending sleeve and the balance shaft arm have a gap therebetween.
Preferably, the pressure piece is a top thread with a thread on the outer edge, and the end part of the top thread is provided with a polygonal adjusting hole.
The beneficial effects of the utility model are that: a clamping and damping-adjusting structure for a balance arm of a dental chair has uniform stress on a shaft sleeve, and prevents the problem that the service life of the shaft sleeve is not long due to abrasion of salient points formed by plastic deformation of the shaft sleeve along with the increase of the use times; the shaft sleeve is sleeved by the shaft sleeve hoop, and the jackscrew pressure piece does not directly apply point pressure to the shaft sleeve, so that the salient points formed by the plastic deformation of the shaft sleeve are prevented from being worn along with the increase of the use times; the jackscrew pressure spare exerts some pressure to the axle sleeve clamp, and the axle sleeve clamp evenly exerts pressure to the axle sleeve, improves the life of axle sleeve.
Drawings
The present invention will be further explained with reference to the drawings and examples.
Fig. 1 is a schematic view of the overall structure of a balance arm clamping damping adjusting structure for a dental chair according to the present invention;
fig. 2 is a schematic cross-sectional view of a balance arm clamping damping adjusting structure for a dental chair according to the present invention;
fig. 3 is an exploded view of a balance arm clamping damping adjusting structure for a dental chair according to the present invention;
fig. 4 is a schematic view of the structure of the shaft sleeve and the shaft sleeve clamp used for the balance arm clamping damping adjusting structure of the dental chair.
Detailed Description
The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic drawings and illustrate the basic structure of the present invention only in a schematic manner, and thus show only the components related to the present invention.
Examples
As shown in fig. 1, 2 and 3, the shaft sleeve hoop 3 is adopted to sleeve the shaft sleeve 2, the top thread pressure piece 5 does not directly apply point pressure to the shaft sleeve 2, and a salient point formed by the plastic deformation of the shaft sleeve 2 is prevented from being worn along with the increase of the use times; the top thread pressure spare 5 exerts some pressure to axle sleeve clamp 3, and axle sleeve clamp 3 evenly exerts pressure to axle sleeve 2, improves the life of axle sleeve.
The shaft sleeve 2 is sleeved on the balance shaft arm 1 and can adjust clamping force, the shaft sleeve 2 is of a disconnected circular ring structure, an opening is formed in one side of the shaft sleeve, and the shaft sleeve 2 can contract or expand along the opening after being stressed, so that the inner diameter is changed. The clamping force to the balance shaft arm 1 can be increased after the balance shaft arm is stressed and contracted.
The axle sleeve clamp 3, the cover is followed outside axle sleeve 2, and axle sleeve clamp 3 has an opening, and the opening both sides of axle sleeve clamp 3 are provided with respectively along the spacing ear that outside outstanding direction extends, and spacing ear is toward outer protrusion. The limiting lug on one side forms the stress part 31, and the fixing part 32 on the other side; the inner diameter of the sleeve clamp 3 can be adjusted by applying pressure to the force receiving portion 31, and the sleeve clamp 3 can be contracted. Wherein the shaft sleeve hoop 3 corresponds to the opening of the shaft sleeve 2.
Balance arm cover 4 cup joints axle sleeve clamp 3 inside, is provided with pressure piece 5 in the balance arm cover 4, and the tip of pressure piece 5 contacts with the atress portion 31 of axle sleeve clamp 3, and pressure piece 5 is adjustable to be set up in balance arm cover 4, changes the position of pressure piece 5 in balance arm cover 4, can adjust the pressure of pressure piece 5 to atress portion 31. In this embodiment, the pressure piece 5 is a jackscrew with threads on the outer edge, and the end of the jackscrew is provided with a polygonal adjusting hole, so that the rotation adjustment is facilitated.
The balance arm sleeve 4 is provided with a gap corresponding to the limiting lug, two sides of the gap are provided with positioning walls 41 protruding outwards, and the positioning walls 41 on the two sides are respectively attached to the two limiting lugs; wherein, the pressure piece 5 is screwed on one side positioning wall 41, the side positioning wall is attached to the force receiving part 31, and the pressure piece 5 passes through the positioning wall 41 and then applies thrust to the force receiving part 31.
One side positioning wall 41 is screwed with the pressure piece 5, and the other side positioning wall 41 is fixed with the fixing part 32 attached to the other side positioning wall through a screw 6.
In this embodiment, referring to fig. 4, the outer edge of the shaft sleeve 2 is provided with a positioning protrusion 21, and the positioning protrusion 21 is in a ring structure and is located at the top of the shaft sleeve 2. The top of the shaft sleeve hoop 3 is provided with a positioning groove 33, and the positioning lug 21 is clamped into the positioning groove 33, so that the positioning is convenient.
The balance arm sleeve 4 further comprises an extension sleeve sleeved on the outer edge of the balance shaft arm 1. The extending sleeve balance shaft arms 1 have gaps between them. As shown in fig. 1 to 3, the positioning wall 41 is located at one end of the balance arm sleeve 4, and the extension sleeve is located at the other end of the balance arm sleeve 4, and the extension sleeve is also understood as an extended part of the balance arm sleeve 4.
A be used for dentistry chair balance arm to press from both sides tight accent damping structure, the axle sleeve atress is even, the bump that prevents that axle sleeve plastic deformation from forming can be along with the increase of use number of times and wearing and tearing and lead to the not long problem of axle sleeve life.
In light of the foregoing, it will be apparent to those skilled in the art from this disclosure that various changes and modifications can be made without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (9)
1. A clamping and damping adjusting structure for a balance arm of a dental chair is characterized by comprising:
a balance shaft arm;
the shaft sleeve is sleeved on the balance shaft arm and can adjust the clamping force;
the shaft sleeve hoop is sleeved on the outer edge of the shaft sleeve and provided with an opening, and at least one side edge of the opening is provided with a stress part, so that the internal diameter of the shaft sleeve hoop can be adjusted by applying pressure to the stress part, and the shaft sleeve hoop is contracted or loosened;
the balance arm sleeve is connected with the shaft sleeve clamp inside in a sleeved mode, a pressure piece is arranged in the balance arm sleeve, the end portion of the pressure piece is in contact with the stress portion of the shaft sleeve clamp, the pressure piece can be arranged in the balance arm sleeve in an adjustable mode, the position of the pressure piece in the balance arm sleeve is changed, and the pressure of the pressure piece on the stress portion can be adjusted.
2. The balance arm clamp damping structure for a dental chair of claim 1, wherein: the both ends of axle sleeve clamp opening are provided with outside outstanding spacing ear respectively, and the spacing ear of one side wherein forms atress portion.
3. The balance arm clamp damping structure for a dental chair of claim 2, wherein: the balance arm sleeve is provided with a gap corresponding to the limiting lugs, two sides of the gap are provided with positioning walls protruding outwards, and the positioning walls on the two sides are respectively opposite to the two limiting lugs; the pressure piece is arranged on one side of the positioning wall, and thrust is applied to the stress part after the pressure piece penetrates through the positioning wall.
4. A balance arm clamp damping adjustment structure for a dental chair according to claim 3, wherein: wherein, one side positioning wall is screwed with the pressure piece, and the other side positioning wall is fixed with the corresponding limit lug through a screw.
5. The balance arm clamping and damping adjustment structure for the dental chair as claimed in claim 1, wherein: the shaft sleeve is of an open structure, and can be contracted or expanded along the open part after being stressed, so that the inner diameter is changed.
6. The balance arm clamp damping structure for a dental chair of claim 5, wherein: the outer edge of the shaft sleeve is provided with a positioning lug, the shaft sleeve hoop is provided with a positioning groove, and the positioning lug is clamped into the positioning groove.
7. A balance arm clamping and resistance adjusting structure for a dental chair as claimed in claim 4 or 6, wherein: the balance arm sleeve further comprises an extension sleeve sleeved on the outer edge of the balance shaft arm.
8. The balance arm clamp damping structure for a dental chair of claim 7, wherein: the extending sleeve and the balance shaft arm are provided with a gap.
9. The balance arm clamp damping structure for a dental chair of claim 4, wherein: the pressure piece is the jackscrew that outer edge has the screw thread, and jackscrew tip has polygon regulation hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221918115.5U CN217724014U (en) | 2022-07-21 | 2022-07-21 | Be used for dentistry chair balance arm to press from both sides tight damping structure of transferring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221918115.5U CN217724014U (en) | 2022-07-21 | 2022-07-21 | Be used for dentistry chair balance arm to press from both sides tight damping structure of transferring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217724014U true CN217724014U (en) | 2022-11-04 |
Family
ID=83849267
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221918115.5U Active CN217724014U (en) | 2022-07-21 | 2022-07-21 | Be used for dentistry chair balance arm to press from both sides tight damping structure of transferring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217724014U (en) |
-
2022
- 2022-07-21 CN CN202221918115.5U patent/CN217724014U/en active Active
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