CN201327364Y - Steel ball structure tape measure - Google Patents
Steel ball structure tape measure Download PDFInfo
- Publication number
- CN201327364Y CN201327364Y CNU2008202039504U CN200820203950U CN201327364Y CN 201327364 Y CN201327364 Y CN 201327364Y CN U2008202039504 U CNU2008202039504 U CN U2008202039504U CN 200820203950 U CN200820203950 U CN 200820203950U CN 201327364 Y CN201327364 Y CN 201327364Y
- Authority
- CN
- China
- Prior art keywords
- steel ball
- tape measure
- plastics
- wheel rim
- central shaft
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model relates to a steel ball structure tape measure, belonging to the technical field of the tap measure and aims at overcoming the defects that when a too big gap is left between the central axis and the axis hole of the prior tape measure, a plastic rim swings too much, but when a too small gap is left between the same, the plastic rim can not swing flexibly. The steel ball structure tape measure comprises a plastic tape measure shell (1), a central axis (2) and a plastic rim (3); the plastic rim (3) is provided with two side surfaces (4); a round ring (5) is arranged between the two side surfaces (4); the round ring is internally provided with a spring tape coiling (6), and two ends of the spring tape coiling (6) are respectively fixed on the central axis (2) and the plastic rim (3); a tape (7) is wound outside the round ring (5), and each side surface of the tape (7) is provided with at least three concave pits (8); two side walls of the plastic tape measure shell (1) are correspondingly provided with annular grooves (10); and steel balls are correspondingly arranged among the concave pits (8) and the annular grooves (10) and are supported against the concave pits (8) and the annular grooves (10).
Description
Technical field
The utility model belongs to the tape measure technical field.
Background technology
Existing tape measure comprises the plastics Flexible rule case, is provided with central shaft in the plastics Flexible rule case, is with the plastics wheel rim on central shaft.Described plastics wheel rim has two sides, and described two sides are provided with axis hole, and central axis is in axis hole.Be provided with annulus between described two sides, be provided with two ends in the annulus and be separately fixed at spring winding on central shaft and the plastics wheel rim, annulus is wound with the chi band outward.
When outside pulling chi band or when unclamping the chi band of pulling out, the plastics wheel rim can be around the central shaft quick rotation, and can relatively rotate between central shaft and the axis hole this moment.
If 1. the problem that this tape measure exists is that the gap between central shaft and the axis hole is too big, then the plastics wheel rim can swing too big.If 2. the gap between central shaft and the axis hole is too little, friction force between central shaft and the axis hole is increased, it is dumb to cause the plastics wheel rim to rotate on central shaft, must increase the number of turns that the spring winding is reeled on the other hand, to overcome overcome friction, cause the length of spring winding to increase again, and the space in the annulus is corresponding also will increase, causes volume to increase.If 3. the gap between central shaft and the axis hole is proper, because two lateral thickness of plastics wheel rim are limited, the long-term use can produce wearing and tearing in the process of rotation, reduced serviceable life, also can cause the gap between central shaft and the axis hole if increase.If 4. plastics wheel rim fast rotational on central shaft, the gap between central shaft and the axis hole is too tight, also can cause between the two plastics to melt because of the high speed rotary grinding heating and cause adhesion.Therefore, the size of gap design is a contradiction between central shaft and the axis hole.
The utility model content
The purpose of this utility model is to provide a kind of plastics wheel rim slow-roll stabilization, steel ball structure tape measure flexibly in the plastics Flexible rule case.
For realizing the purpose of this utility model, described steel ball structure tape measure, comprise the plastics Flexible rule case, in the plastics Flexible rule case, be provided with central shaft, be enclosed within the plastics wheel rim on the central shaft, described plastics wheel rim has two sides, be provided with annulus between described two sides, be provided with two ends in the annulus and be separately fixed at spring winding on central shaft and the plastics wheel rim, annulus is wound with the chi band outward, is provided with at least three pits on each side, and correspondence is provided with annular groove on two sidewalls of described plastics Flexible rule case, the corresponding steel ball that is provided with between described pit and annular groove, described steel ball withstands on pit and the annular groove.
Owing to be respectively equipped with at least three pits in two sides of plastics wheel rim, correspondence is provided with annular groove on two sidewalls of described plastics Flexible rule case, the corresponding steel ball that is provided with between described pit and annular groove, described steel ball withstands on pit and the annular groove, therefore the plastics wheel rim can rotate on two sidewalls of plastics Flexible rule case, rotate around central shaft the prior art and needn't resemble, overcome the friction force between the plastics wheel rim and central shaft in the prior art.Steel ball between pit and the annular groove can significantly reduce friction force, and it is more flexible to make that the plastics wheel rim can rotate in the plastics Flexible rule case.The area that distributes on plastics wheel rim and plastics Flexible rule case of steel ball can be bigger in addition, and it is more steady to make that the plastics wheel rim can rotate in the plastics Flexible rule case, has significantly reduced local wearing and tearing, and serviceable life can be longer.
Description of drawings
The drawing of accompanying drawing is described as follows:
Fig. 1 is the structural drawing of the utility model steel ball structure tape measure.
Fig. 2 is the three-dimensional wiring layout after the utility model steel ball structure tape measure removes spring winding and chi band figure.
Fig. 3 is the structural drawing of plastics wheel rim.
Fig. 4 is the stereographic map of end cap.
Fig. 5 is the stereographic map of plastics wheel rim.
Embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the utility model steel ball structure tape measure is described in further detail:
Shown in Fig. 1,2, steel ball structure tape measure described in the utility model comprises plastics Flexible rule case 1, and plastics Flexible rule case 1 is made up of two halves, is provided with central shaft 2 in half plastics Flexible rule case 1 therein, is enclosed within the plastics wheel rim 3 on the central shaft 2.Shown in Fig. 3,5, described plastics wheel rim 3 has the side 4 of two annulars, is provided with annulus 5 between described two sides 4.Be provided with two ends in the annulus 5 and be separately fixed at spring winding 6 on central shaft 2 and the plastics wheel rim 3, the annulus 5 outer chi bands 7 that are wound with, on each side 4, be provided with three pits 8 that 120 degree distribute on the annulus of a diameter R, the corresponding concentric circles annular groove 10 that to be provided with two diameters be R on two sidewalls 9 of described two half plastics Flexible rule cases 1, the corresponding steel ball 11 that is provided with between described pit 8 and annular groove 10 amounts to 6 steel balls 11.Described steel ball 11 withstands on pit 8 and the annular groove 10, makes the two ends of plastics wheel rim 3 can't be to two side shiftings.When plastics wheel rim 3 rotated, steel ball 11 rotated rotation in pit 8 on the other hand on the one hand around the axle center in annular groove 10.Because annular groove 10 limits steel ball 11 and rotates in diameter is the annulus track of R, and pit 8 makes each side 4 can be seated on the steel ball 11, therefore can there be bigger supporting surface each side 4 on sidewall 9, makes plastics wheel rim 3 rotate and becomes steady.The revolution of steel ball 11 and rotation can reduce the friction force between plastics Flexible rule case 1 and the plastics wheel rim 3 widely, it is very freely suitable that plastics wheel rim 3 is rotated in plastics Flexible rule case 1, therefore the length of spring winding 6 can reduce, the number of turns that spring winding 6 is reeled on central shaft 2 correspondingly also can reduce, the also corresponding minimizing of elastic force of nature backrush, but still can make 3 backrush of plastics wheel rim, like this volume of plastics Flexible rule case 1 can make littler.The value of R is big more, and the revolution track of steel ball 11 is also just long more, and is also just more little to the wearing and tearing of annular groove 10.
As shown in Fig. 2,4, one of them side 4 of described plastics wheel rim 3 is provided with the end cap 12 that can cover on annulus 5 end faces, and described pit 8 is provided with on the end cap 12.The side of end cap 12 is provided with three fixture blocks 13, and the lid oral-lateral limit correspondence of plastics wheel rim 3 is provided with draw-in groove 14, and after end cap 12 covered in the lid mouth, fixture block 13 dropped in the draw-in groove 14, in case not-go-end lid 12 falls into the lid mouth.Open end cap 12, spring winding 6 can be installed in the annulus 5.
Claims (2)
1. steel ball structure tape measure, comprise plastics Flexible rule case (1), in plastics Flexible rule case (1), be provided with central shaft (2), be enclosed within the plastics wheel rim (3) on the central shaft (2), described plastics wheel rim (3) has two sides (4), be provided with annulus (5) between described two sides (4), be provided with two ends in the annulus (5) and be separately fixed at spring winding (6) on central shaft (2) and the plastics wheel rim (3), the outer chi band (7) that is wound with of annulus (5), it is characterized in that on each side (4), being provided with at least three pits (8), go up correspondence at two sidewalls (9) of described plastics Flexible rule case (1) and be provided with annular groove (10), the corresponding steel ball (11) that is provided with between described pit (8) and annular groove (10), described steel ball (11) withstand on pit (8) and the annular groove (10).
2. steel ball structure tape measure according to claim 1 is characterized in that described side (4) is provided with the end cap (12) that can cover on annulus (5) end face, and described pit (8) is provided with on the end cap (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202039504U CN201327364Y (en) | 2008-11-25 | 2008-11-25 | Steel ball structure tape measure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202039504U CN201327364Y (en) | 2008-11-25 | 2008-11-25 | Steel ball structure tape measure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201327364Y true CN201327364Y (en) | 2009-10-14 |
Family
ID=41179336
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008202039504U Expired - Fee Related CN201327364Y (en) | 2008-11-25 | 2008-11-25 | Steel ball structure tape measure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201327364Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101889413B1 (en) | 2018-04-06 | 2018-08-17 | 주식회사 베이글랩스 | Length measuring device |
| CN109458890A (en) * | 2018-12-22 | 2019-03-12 | 宁波潘易园林工具有限公司 | Tape measure |
-
2008
- 2008-11-25 CN CNU2008202039504U patent/CN201327364Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101889413B1 (en) | 2018-04-06 | 2018-08-17 | 주식회사 베이글랩스 | Length measuring device |
| WO2019194370A1 (en) * | 2018-04-06 | 2019-10-10 | 주식회사 베이글랩스 | Length measuring apparatus |
| CN109458890A (en) * | 2018-12-22 | 2019-03-12 | 宁波潘易园林工具有限公司 | Tape measure |
| CN109458890B (en) * | 2018-12-22 | 2021-02-19 | 宁波潘易园林工具有限公司 | Measuring tape |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091014 Termination date: 20091225 |