CN2651696Y - Speed-variable transmission of band tape - Google Patents
Speed-variable transmission of band tape Download PDFInfo
- Publication number
- CN2651696Y CN2651696Y CN 03208399 CN03208399U CN2651696Y CN 2651696 Y CN2651696 Y CN 2651696Y CN 03208399 CN03208399 CN 03208399 CN 03208399 U CN03208399 U CN 03208399U CN 2651696 Y CN2651696 Y CN 2651696Y
- Authority
- CN
- China
- Prior art keywords
- handle
- band tape
- chi
- rotating disk
- gear
- 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
A speed changing mechanism for band tape is provided, which has the structure that: a handle is connected to a rotor disc via a pin shaft and can overturn around the pin shaft; the rotor disc is positioned in a supporting hole on the shell body of the band tape; a gear is positioned on the rotor disc and coordinates with a pinion; the pinion is connected solidly to a band tape core that is positioned on a support column on the shell body of the band tape. When the user rocks the handle, the band tape can be driven to rotate, so as to coil up the band tape; when the user pulls the handle, the band tape can be driven to make fast coiling movement, so as to bring much facility to the user; when the band tape is pulled, the handle can rotate in low speed, so as to ensure safety for the user.
Description
Affiliated technical field
The utility model relates to a kind of variable transmission mechanism of tape measure, is to the common improvement that waits speed driving mechanism of tape measure.
Background technology
The common gear train of tape measure is the constant speed transmission in the market, and in waiting speed driving mechanism, handle is connected with rotating disk by bearing pin, and rotating disk is connected with the chi band.When the user rotates rotating disk when pulling moving chi band, drive handle with 1: 1 speed then and rotate; Otherwise, when with hand fixed handle, also drive the chi band and produce the motion of reeling with equal speed.This design has brought inconvenience under certain conditions user's rolling campaign, that is, when the chi strip length is longer, must shakes handle for a long time and could take in the chi band fully in the chi shell.
Summary of the invention
Just must shake the shortcoming that can finish the rolling campaign for a long time in order the handle of speed driving mechanism such as to overcome, the utility model provides a kind of variable transmission mechanism of tape measure.Can drive the motion of produce reeling of chi band when this mechanism makes the user with hand fixed handle fast, but affect handle to make it rotation with low speed when pulling moving chi band.
The utility model in order to realize the technical scheme that the speed change transmission is adopted is, not being to make to fixedly connected by the parts of the hand moving parts and the chi band that is used to reel, but mesh by gear mesh, promptly, respectively establish a gear on two parts, wherein be provided with gear wheel by hand moving parts, the parts of the chi band that is used to reel are provided with pinion wheel, gear mesh has also produced the speed ratio between driving link and the driven member in transmitting movement.
The beneficial effects of the utility model are, because by the parts of hand moving parts and coiling chi band driving link and driven member each other, also there is a speed ratio between principal and subordinate's moving part simultaneously, thereby when pulling chi band, can reduces the rotating speed of handle, make the user safer; When turning handle, can accelerate the rolling of chi band, make the user more convenient.
Description of drawings
The utility model is described in further detail below in conjunction with drawings and Examples.
Fig. 1 waited the speed driving mechanism structural drawing in the past.
Fig. 2 is the utility model variable transmission mechanism structural drawing,
Fig. 3 is another embodiment of the utility model variable transmission mechanism.
1. handles among the figure, 2. rotating disk, 3. chi core, 4. bearing pin, 5. housing one,
51. supported hole, 6. chi band, 7. housing two, 71. support columns,
8. gear wheel, 9. pinion wheel, 10. gland bonnet, 11. screws.
Embodiment
Owing to Fig. 2 is developed by Fig. 1, narration at first describes Fig. 1 for convenience.
Handle among Fig. 1 (1) is connected with rotating disk (2) by bearing pin (4), and handle (1) can overturn around bearing pin (4).Rotating disk (2) firmly is connected with chi core (3), does not have relative motion between the two.Housing one (5) and housing two (7) are provided with supported hole (51) and support column (71).Rotating disk (2)-chi core (3) assembly is installed on supported hole (51) and the support column (71), can rotates thereon.When the rolling state, shake handle (1), handle (1) drives rotating disk (2) by bearing pin (4) and chi core (3) rotates, and chi band (6) is wound on the chi core (3), realizes the rolling purpose.Otherwise, when stretching chi band (6), also can make chi core (3) by same drive path, rotating disk (2) and handle (1) rotate with same velocity reversal.The purpose of this patent will change the constant speed drive connection between handle (1) in these two kinds of motions-rotating disk (2) assembly and the chi core (3) just.
Fig. 2 is embodiment of the present utility model.It is connected Fig. 1 turntable (2) and chi core (3) direct to change into by a pair of gear and is connected with a joggle, and its turntable (2) is gone up and firmly connected gear wheel (8), and chi core (3) is gone up and firmly connected pinion wheel (9).Gear wheel in the present embodiment (8) is an annular wheel, and pinion wheel (9) is an outer rotor.The environment for use of considering tape measure is likely the more places of dust such as open air or building ground, and long chi (chi that the chi strip length is long) uses under this type of environment basically exactly, in order to prevent the deleterious effect of dust to gearing mesh, present embodiment is provided with gland bonnet (10), by screw (11) gland bonnet (10) closely is connected with housing one (5), forms a gear cavity jointly.Gear wheel (8) and pinion wheel (9) are in the gear cavity with extraneous relative isolation and are protected, and have guaranteed the normal operation of gear train.
Below describe in two kinds of situation.
Situation one:
When shaking handle (1), drive rotating disk (2)-gear wheel (8) assembly by bearing pin (4) and rotate, gear wheel (8) promotes pinion wheel (9)-chi core (3) assembly and rotates, and chi band (6) just is wound on the chi core (3), realizes the rolling purpose.Because gear wheel (8) is a driving wheel, pinion wheel (9) is an engaged wheel, so gear train realizes accelerated motion, that is, shakes the purpose that handle (1) can be realized quick rolling.
Situation two:
When pulling chi band (6), drive chi core (3)-pinion wheel (9) assembly and rotate, pinion wheel (9) promotes gear wheel (8)-rotating disk (2) assembly and rotates.Rotating disk (2) drives handle (1) by bearing pin (4) and makes backward rotation.Because pinion wheel (9) is a driving wheel, gear wheel (8) is an engaged wheel, so gear train realizes retarded motion, that is, pulling chi band (6) makes handle (1) make backward rotation with slower speed.
By situation one and situation two as seen, the motion transmission by gear train can realize: make chi band (6) produce the fast winding motion during turning handle (1), affect handle (1) to make backward rotation with slower speed during pulling chi band (6).In both cases, in the transmittance process of motion, the variation of movement velocity is arranged all, so the utility model design is a kind of variable transmission mechanism.
Figure 3 shows that another embodiment.In this embodiment, gear wheel (8) changes outer rotor into by annular wheel.
Claims (4)
1. the variable transmission mechanism of a tape measure, handle fuses by bearing pin and rotating disk, and rotating disk is installed on the housing of tape measure, can rotate thereon; The chi core is connected with the chi band, and the chi core is installed on the housing of tape measure, can rotate thereon.It is characterized in that: rotating disk is provided with a gear, and the chi core is provided with a gear, and two gears intermesh, and constitutes pinion unit.
2. the variable transmission mechanism of tape measure according to claim 1, its feature also is: the number of teeth of set gear is greater than the number of teeth of set gear on the chi core on the rotating disk.
3. the variable transmission mechanism of tape measure according to claim 1, its feature also is: on the rotating disk on set gear and the chi core set gear meshing mode can be external toothing.
4. the variable transmission mechanism of tape measure according to claim 1, its feature also is: on the rotating disk on set gear and the chi core set gear meshing mode can be interior engagement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03208399 CN2651696Y (en) | 2003-09-04 | 2003-09-04 | Speed-variable transmission of band tape |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03208399 CN2651696Y (en) | 2003-09-04 | 2003-09-04 | Speed-variable transmission of band tape |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2651696Y true CN2651696Y (en) | 2004-10-27 |
Family
ID=34324799
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03208399 Expired - Fee Related CN2651696Y (en) | 2003-09-04 | 2003-09-04 | Speed-variable transmission of band tape |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2651696Y (en) |
-
2003
- 2003-09-04 CN CN 03208399 patent/CN2651696Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: NINGBO CHANGCHENG PRECISION INDUSTRY CO.,LTD. Free format text: FORMER NAME OR ADDRESS: NINGBO GRATE WALL PRECISION MEASURING TAPE MANUFACTURING CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Patentee after: Changcheng Jinggong Industry Co., Ltd., Ningbo Patentee before: Ningbo Great Wall Precision Roll Ruler Manufacturing Co., Ltd. |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20041027 |