CN206268399U - Ball nut - Google Patents
Ball nut Download PDFInfo
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- CN206268399U CN206268399U CN201621342776.2U CN201621342776U CN206268399U CN 206268399 U CN206268399 U CN 206268399U CN 201621342776 U CN201621342776 U CN 201621342776U CN 206268399 U CN206268399 U CN 206268399U
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- ball
- shovel
- storage tank
- nut
- nut body
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Abstract
The utility model discloses a kind of ball nut, it includes a nut body, two circuiting end caps and multiple balls, nut body has through hole and is formed in the spiral ball groove of its inner hole wall, and the biend of nut body is respectively equipped with the storage tank for being axially concaved and being communicated in inner hole wall；Particularly, the storage tank is axially concaved the depth at an axial groove bottom of the inner hole wall of through hole, and an axial depth for pitch (Pitch) is goed deep into again after the first Luo Gou is reached, and makes to form a notch part adjacent to second Luo Gou of the first Luo Gou；The circuiting end caps have a shovel pearl block for integrally moulded, the end for shoveling pearl block abuts to the axial groove bottom of storage tank, and shovel pearl block is provided with a circulation canal and a linking Luo Gou, and circulation canal one end is connected to the first Luo Gou, linking Luo Gou is filled up in the notch part of the second Luo Gou, and the second Luo Gou is filled up into complete.Whereby, ball nut of the present utility model, can improve the excessively thin problem of circulation canal lateral sulcus wall caused by low helical pitch ball nut.
Description
Technical field
The utility model sets about a kind of ball nut, espespecially a kind of circuiting end caps combining structure at the end of ball nut two
Meter.
Background technology
The ball nut for being matched with ball screw now is used for linear moving mechanism, turns ball screw using motor and makes
Ball nut moves linearly, and during its movement and by the ball set by the spiral grooves of ball nut, makes the ball can be in ball spiral shell
Infinite Cyclic is rolled between the spiral grooves of cap and the spiral grooves of ball screw.The design of existing ball-recirculation return flow path
Scheme, including outer circulation ball, interior circulation ball and end cap circulating ball isotype, wherein end cap circulating ball is in nut body
Two ends assemble a circuiting end caps respectively, circuiting end caps have the cyclic track of a bending, cyclic track connection nut body
Spiral grooves and a backflow duct, therefore ball Infinite Cyclic is rolled.
Refering to shown in Fig. 1, it is axially recessed that existing nut body 10 is provided with one in order to accommodate the circuiting end caps 20, from its end face
The storage tank 102 for entering, makes the spiral grooves 101 of the nut body 10 extend to the side wall of storage tank 102, when the circuiting end caps
20 are embedded in after the storage tank 102, one end of cyclic track 201 of the circuiting end caps 20 is engaged on the of the spiral grooves 101
One mouth end 1012 of spiral shell ditch 1011, therefore ball can roll into the cyclic track 201 from the mouth end 1012 of the spiral grooves 1011,
Or roll into the spiral grooves 101 from the cyclic track 201.
However, the depth of the above-mentioned storage tank 102 only arrives first Luo Gou of the spiral grooves 101 of the nut body 10
Between 1011 and second spiral shell ditch 1013, and the circuiting end caps 20 are the block of plastic ejection moulding, the one of the cyclic track 201
Hold to correspond to the mouth end 1012 of first spiral shell ditch 1011, it is necessary to implement into the one end very close to the circuiting end caps 20
Face, so causes the thickness of a lateral sulcus wall 202 between the adjacent end face of circuiting end caps 20 of the cyclic track 201 excessively thin, holds
Easily there is warped plastic or the deformation of lateral sulcus wall 202, therefore the smooth degree that obstruction ball is rolled through repeatedly.It is particularly low
Be susceptible in the ball nut of helical pitch, the ball nut of so-called low helical pitch refer to the spiral grooves 101 pitch (Pitch) compared with
Short, because pitch (Pitch) is shorter, the lateral sulcus wall 202 is in order to just implement in first spiral shell ditch 1011 and second Luo Gou
Between 1013, and cyclic track 201 will result in the thickness mistake of the lateral sulcus wall 202 very close to the end face of circuiting end caps 20
It is thin.
Utility model content
The purpose of this utility model is providing a kind of ball nut, its composite construction for passing through nut body and circuiting end caps
Design, the problem that existing lateral sulcus wall can be overcome excessively thin, and then reaching prevents deformation and the ball from smooth can roll through circuiting end caps
Purpose.
In order to achieve the above object, the utility model provides a kind of ball nut, comprising a nut body, two circuiting end caps
And multiple balls, wherein：The nut body has the through hole of a connection biend, and one is formed in the spiral of the inner hole wall of the through hole
Ball groove, one is located at the through hole on one side and connects the backflow duct of the nut body biend, and is respectively formed at the nut
One storage tank at the end of body two, the storage tank is recessed from the end face axial of the nut body and is communicated in the endoporus of the through hole
Wall, the spiral ball groove one end forms a ball entrance end in the side cell wall of the storage tank；The circuiting end caps one into
Type has a shovel pearl block for being used to match and be entrenched in the storage tank, and the shovel pearl block has the rolling for connecting the spiral ball groove
Pearl entrance end and the circulation canal of the backflow duct one end, the multiple balls of circulation canal guiding are in the spiral ball groove
With circulating rolling in the backflow duct, it is characterised in that：
The depth that the storage tank is axially concaved an axial groove bottom of the inner hole wall of the through hole reaches the ball entrance end
Go deep into an axial depth for pitch after the first affiliated Luo Gou again, make the one of the adjacent pitch of the ball entrance end
Two Luo Gou form a notch part；The end of the shovel pearl block of the circuiting end caps abuts to the axial groove bottom of the storage tank, the circulation
A linking Luo Gou is formed with the shovel pearl block of one side of passage, linking Luo Gou is filled up in the notch part, and by second Luo Gou
Fill up complete.
Wherein a positioning sleeve is protruded in the end of the shovel pearl block, and the expansion that the positioning sleeve is embedded in the backflow duct one end connects hole,
The circulation canal one end extends to the positioning sleeve and connects the backflow duct.
Wherein the nut body has a locating slot, and the locating slot is recessed from the end face axial of the nut body and is communicated in
The side wall of the storage tank；The one side of the shovel pearl block of the circuiting end caps is integrally formed with a locating convex block, and the locating convex block is embedding
Close in the locating slot.
The axial length of the wherein locating convex block is shorter than the axial length of the shovel pearl block.
Wherein locating convex block and the end surface shape of the shovel pearl block is in ＜ shapes.
Ball nut of the present utility model, can improve the circulation canal lateral sulcus wall mistake caused by low helical pitch ball nut
Thin problem, and then reach the purpose for preventing that deformation and ball from smooth can roll through circuiting end caps.
Brief description of the drawings
Fig. 1 is the generalized section of the nut body with circuiting end caps composite construction of existing ball nut.
Fig. 2 is the schematic perspective view that the utility model ball nut is applied on screw rod.
Fig. 3 is the schematic perspective view of each component decomposing state of the utility model ball nut.
Fig. 4 is the schematic perspective view of the utility model nut body section and circuiting end caps decomposing state.
Fig. 5 is the schematic side view of the utility model nut body section and circuiting end caps decomposing state.
Fig. 6 is the positive schematic perspective view of the utility model circuiting end caps.
Fig. 7 is the schematic perspective view of the utility model circuiting end caps reverse side.
Fig. 8 is the front schematic view of the utility model circuiting end caps.
Fig. 9 is the reverse side schematic diagram of the utility model circuiting end caps.
In figure：
100 screw rods；1 nut body；
11 through holes；12 spiral ball grooves；
121 ball entrance ends；122 first Luo Gou；
123 second Luo Gou；1231 notch parts；
13 end faces；14 backflow ducts；
141 expansions connect hole；15 storage tanks；
151 axial groove bottoms；16 locating slots；
2 circuiting end caps；21 shovel pearl blocks；
22 circulation canals；23 linking Luo Gou；
24 positioning sleeves；25 locating convex blocks；
3 balls.
Specific embodiment
The utility model is described in further detail with specific embodiment below in conjunction with the accompanying drawings, so that those skilled in the art
The utility model can be better understood from and can be practiced, but illustrated embodiment is not as to restriction of the present utility model.
Refering to shown in Fig. 2, the ball nut that the utility model is provided, for being screwed on a screw rod 100, can be by the screw rod
100 drive and the ball nut of linear slide, and referring again to shown in Fig. 3, Fig. 4 and Fig. 5, its preferably specific embodiment includes a spiral shell
Cap body 1, two circuiting end caps 2 and multiple balls 3, wherein：The nut body 1 is one end or middle with a flange (flange)
Hollow sleeve columnar structure, it has the through hole 11 of a connection biend, and one is formed in the spiral ball of the inner hole wall of the through hole 11
Groove 12, one is located at the through hole 11 on one side and connects the backflow duct 14 of the biend 13 of nut body 1, and is respectively formed at this
One storage tank 15 at the end of nut body 1 two, the storage tank 15 is axially concaved and is communicated in this from the end face 13 of the nut body 1
The inner hole wall of through hole 11, makes the one end of spiral ball groove 12 form a ball in the side cell wall of the storage tank 15 and passes in and out whereby
Mouth end 121；The circuiting end caps 2 are integrally moulded, and it is constructed with a shovel for being used to match and be entrenched in the storage tank 15
Pearl block 21, the shovel pearl block 21 has the ball entrance end 121 for connecting the spiral ball groove 12 and the backflow duct 14
The circulation canal 22 of one end, the circulation canal 22 guides multiple balls 3 in the spiral ball groove 12 and the backflow duct 14
Middle circulating rolling.
Of the present utility model to be characterised by referring again to shown in Fig. 4 and Fig. 5, the above-mentioned storage tank 15 is axially concaved the through hole
The depth at one axial groove bottom 151 of 11 inner hole wall, reaches after the first spiral shell ditch 122 belonging to the ball entrance end 121 again
Go deep into an axial depth for pitch (Pitch), make 121 adjacent one second spiral shell ditches 123 of pitch of the ball entrance end
Form a notch part 1231.Referring again to shown in 6, Fig. 7, Fig. 8 and Fig. 9, and the end of the shovel pearl block 21 of the above-mentioned circuiting end caps 2 is supported
The axial groove bottom 151 of the storage tank 15 is come to, and one is formed with the surface of shovel pearl block 21 of one side of the circulation canal 22
Linking spiral shell ditch 23, makes the linking spiral shell ditch 23 fill up in the notch part 1231, and the second spiral shell ditch 123 is filled up into complete whereby.
Referring again to shown in Fig. 6, Fig. 7, Fig. 8 and Fig. 9, the end protrusion one of the above-mentioned shovel pearl block 21 of the utility model is cylindric
Positioning sleeve 24, when the shovel pearl block 21 be embedded in the nut body 1 storage tank 15 when, the positioning sleeve 24 is embedded in the return port
One expansion of the one end of road 14 connects hole 141, one end of the circulation canal 22 is extended to the positioning sleeve 24 and is communicated in the backflow whereby
The one end in duct 14.
Referring again to shown in Fig. 4, the above-mentioned nut body 1 preferably being implemented with a locating slot 16, the locating slot 16 from
The end face 13 of the nut body 1 is axially concaved and is communicated in the opposite side wall of the storage tank 15；And the shovel of the above-mentioned circuiting end caps 2
Integrally formed with a locating convex block 25, the axial length of the locating convex block 25 is shorter than the axial direction of the shovel pearl block 21 to the one side of pearl block 21
Length, and make the locating convex block 25 be in ＜ shapes with the end surface shape of the shovel pearl block 21, whereby when the shovel pearl block 21 is embedded in the nut
During the storage tank 15 of body 1, while making the locating convex block 25 to be entrenched in the locating slot 16, firm combination circulation end is reached
Lid 2 and prevent its loosen effect.
Embodiment described above is only the preferred embodiment lifted to absolutely prove the utility model, the utility model
Protection domain not limited to this.Equivalent substitute or change that those skilled in the art are made on the basis of the utility model
Change, within protection domain of the present utility model.Protection domain of the present utility model is defined by claims.
Claims (5)
1. a kind of ball nut, comprising a nut body, two circuiting end caps and multiple balls, wherein：The nut body has one
The through hole of biend is connected, one is formed in the spiral ball groove of the inner hole wall of the through hole, and one is located at the through hole on one side and connects
The backflow duct of the nut body biend, and be respectively formed at a storage tank at the end of nut body two, the storage tank from this
The end face axial of nut body is recessed and is communicated in the inner hole wall of the through hole, and the spiral ball groove one end is in the storage tank
Side cell wall forms a ball entrance end；The circuiting end caps are integrally formed with a shovel for being used to match and be entrenched in the storage tank
Pearl block, the circulation that the shovel pearl block has the ball entrance end and the backflow duct one end for connecting the spiral ball groove is led to
Road, circulation canal guiding multiple balls circulating rolling in the spiral ball groove and the backflow duct, it is characterised in that：
The depth that the storage tank is axially concaved an axial groove bottom of the inner hole wall of the through hole is reached belonging to the ball entrance end
The first Luo Gou after go deep into an axial depth for pitch again, make one second spiral shell of the adjacent pitch of the ball entrance end
Ditch forms a notch part；The end of the shovel pearl block of the circuiting end caps abuts to the axial groove bottom of the storage tank, the circulation canal
One side shovel pearl block on be formed with a linking Luo Gou, linking Luo Gou is filled up in the notch part, and second Luo Gou is filled up
Completely.
2. ball nut as claimed in claim 1 a, it is characterised in that wherein positioning sleeve is protruded in the end of the shovel pearl block, this is determined
One expansion of the embedded backflow duct one end of position set connects hole, and the circulation canal one end extends to the positioning sleeve and connects the return port
Road.
3. ball nut as claimed in claim 1, it is characterised in that wherein the nut body has a locating slot, the locating slot
It is recessed from the end face axial of the nut body and be communicated in the side wall of the storage tank；The one side of the shovel pearl block of the circuiting end caps
Integrally formed with a locating convex block, the locating convex block is entrenched in the locating slot.
4. ball nut as claimed in claim 3, it is characterised in that the axial length of the wherein locating convex block is shorter than the shovel pearl block
Axial length.
5. ball nut as claimed in claim 3, it is characterised in that the wherein locating convex block is equal with the end surface shape of the shovel pearl block
In ＜ shapes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621342776.2U CN206268399U (en) | 2016-12-08 | 2016-12-08 | Ball nut |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621342776.2U CN206268399U (en) | 2016-12-08 | 2016-12-08 | Ball nut |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206268399U true CN206268399U (en) | 2017-06-20 |
Family
ID=59044623
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621342776.2U Active CN206268399U (en) | 2016-12-08 | 2016-12-08 | Ball nut |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206268399U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111075896A (en) * | 2019-12-31 | 2020-04-28 | 慈兴集团有限公司 | Ball screw with guide pipe |
-
2016
- 2016-12-08 CN CN201621342776.2U patent/CN206268399U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111075896A (en) * | 2019-12-31 | 2020-04-28 | 慈兴集团有限公司 | Ball screw with guide pipe |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 5th floor, 101 Zhongcheng Road, Da'an Li, Tucheng District, Xinbei City, Taiwan, China Patentee after: International Seiko Co.,Ltd. Address before: Taiwan New Taipei City Tucheng China tadatsugu Road No. 101 5 floor Patentee before: AMA TECH Corp. |