CN204177456U - A kind of balance - Google Patents
A kind of balance Download PDFInfo
- Publication number
- CN204177456U CN204177456U CN201420656850.2U CN201420656850U CN204177456U CN 204177456 U CN204177456 U CN 204177456U CN 201420656850 U CN201420656850 U CN 201420656850U CN 204177456 U CN204177456 U CN 204177456U
- Authority
- CN
- China
- Prior art keywords
- screw rod
- vernier
- spiral shell
- shell tooth
- scale
- 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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- Length-Measuring Instruments Using Mechanical Means (AREA)
Abstract
The utility model relates to a kind of balance, comprise support (1), scale (2), carrying disk (3) and vernier (4), described balance also comprises the screw rod (5) with screw rod spiral shell tooth (51), described scale two ends arrange screw bracket (6) respectively, described vernier top arranges vernier spiral shell tooth (43), described screw rod spiral shell tooth can engage coupling with vernier spiral shell tooth, described screw rod is mobilizable to be arranged on screw bracket, and is controlled to be meshed with vernier spiral shell tooth or to be separated by screw bracket.Balance tool of the present utility model has the following advantages: 1, can weigh more accurately; 2, decrease finger and the duration of contact of vernier, avoid vernier to be corroded.
Description
Technical field
The utility model relates to biology and chemical field, relates to a kind of balance specifically, relates to a kind of balance with spiro rod regulating device in particular.
Background technology
Balance is biological and a kind of conventional weighing apparatus tool of chemical field, and its degree of accuracy is most important for experimental result.If error is large in chemical reaction, even unpredicted loss can be caused.Tradition balance vernier is slide to move on scale, when weighing, and experimenter's direct armrest abutment vernier, and stir vernier to the left and right with finger.Due to sliding friction, vernier is made to be difficult to move on scale accurately.Vernier relative target scale is often caused to offset.In addition, experimenter, when doing last trickle adjustment, pointed contact vernier of a specified duration, and easily make finger perspires due to spiritual high concentration, accelerate the oxidation corrosion of vernier, this reduce further the accuracy of balance undoubtedly, even has a strong impact on the serviceable life of balance.
In order to solve above-mentioned prior art problem, special proposition balance of the present utility model.
Utility model content
The utility model object is to provide a kind of balance, and balance of the present utility model can weigh more accurately, and decrease finger contact with the direct of vernier.
To achieve these goals, the utility model provides a kind of balance, comprise support 1, scale 2, carrying disk 3 and vernier 4, described balance also comprises the screw rod 5 with screw rod spiral shell tooth 51, described scale two ends arrange screw bracket 6 respectively, and described vernier top arranges vernier spiral shell tooth 43, and described screw rod spiral shell tooth can engage coupling with vernier spiral shell tooth, described screw rod is mobilizable to be arranged on screw bracket, and is controlled to be meshed with vernier spiral shell tooth or to be separated by screw bracket.
According to balance described in the utility model, to be meshed with vernier spiral shell tooth to make screw rod spiral shell tooth and to contact, the position that can contact with screw rod at vernier arranges the spiral shell tooth outwardly relative to vernier; Even in the position of contact, inwardly groove can be set, and vernier spiral shell tooth 43 is set in groove surfaces.
According to balance described in the utility model, be understandable that, screw rod can be arranged on below scale relative to scale, also can be arranged on above scale; When being arranged on below scale, controlling screw rod by screw bracket and move up and engage with vernier spiral shell tooth contact; When being arranged on above scale, controlling screw rod by screw bracket and move down and engage with vernier spiral shell tooth contact;
Wherein be understandable that, when above screw rod is arranged on scale, vernier spiral shell tooth is arranged on the top of vernier; When screw rod is arranged on below scale, vernier spiral shell tooth is arranged on the bottom of vernier.
According to a preferred embodiment of the present utility model, described screw rod is arranged on the top of scale, and arc groove 42 is offered along screw rod direction in vernier top, and groove inside surface arranges screw rod spiral shell tooth.
Wherein be understandable that, described screw rod direction is the axial direction of screw rod, and namely observer in the face of sky at ordinary times, the Width of balance.
According to balance described in the utility model, described groove square section can be any arc matched with screw diameter; Screw rod spiral shell tooth mates so that can be meshed with vernier spiral shell tooth;
In order to better engage coupling, according to preferred embodiment of the present utility model, described groove square section is semicircle;
Wherein be understandable that, described semicircle should be the semicircle that diameter and screw diameter match;
Wherein will also be appreciated that described square section refers to when observer is when the balance front view of Fig. 1, along the square section with paper vertical direction.
According to balance described in the utility model, the movement that described screw bracket can control screw rod with art methods is meshed with vernier spiral shell tooth to make screw rod spiral shell tooth.For example can control the position of screw rod by offering the through hole be interconnected in screw bracket, or be controlled the movement of screw rod by rotatable connecting rod.
According to preferred embodiment of the present utility model, described screw bracket offers inverted L-shaped through hole 61 along screw rod direction, through-hole diameter is free to slide in through-holes for holding screw rod, when screw rod slides into the nearest edge of through hole vertical direction distance scale in through hole, the screw rod spiral shell tooth that screw rod is arranged can be mediated mutually with scale, and when screw rod slides into the coboundary of through hole in through hole, screw rod spiral shell tooth and scale are separated.
Wherein be understandable that, describedly offer inverted L shape through hole along screw rod direction, refer to the axis level mutually of the axis of through hole and screw rod.
Wherein it will also be appreciated that, described inverted L shape through hole, refer to and offer the first through hole 62 and the second through hole 63 respectively at screw bracket, the diameter of the first through hole and the second through hole is not less than the diameter of screw rod, wherein preferably the diameter of the first through hole and the second through hole closes with screw diameter phase, screw rod can be rotated in the first through hole and the second through hole, wherein the first through hole is positioned at directly over vernier, the lower limb of the first through hole in the horizontal direction with vernier spiral shell tooth level mutually, the vertical height of the lower limb of the second through hole and the lower limb of the first through hole is not less than the radius (being preferably not less than the diameter of screw rod) of screw rod, and the second through hole center of circle and the first through hole center of circle horizontal range are not less than the diameter of screw rod, be not less than the channel connection of screw diameter by width between first through hole and the second through hole, screw rod can be slided between the first through hole and the second through hole by this passage freely, and when making screw rod be positioned at the first through hole, screw rod spiral shell tooth can be meshed with vernier spiral shell tooth and contact, and when screw rod is positioned at the second through hole, screw rod spiral shell tooth and vernier spiral shell tooth are separated.
From the side, the first through hole, the second through hole and the passage that is communicated with form inverted L shape.
According to another preferred embodiment of the present utility model, described screw bracket comprises the horizon bar 71 be fixed on scale, horizon bar is relative to the other end pivot joint motion bar 72 connecting scale one end, motion bar is rotatable relative to the other end being articulated in horizon bar one end arranges screw rod, on the top of horizon bar pivot joint motion bar one end, barrier plate 73 is set, wherein start at from horizon bar and motion bar pivot joint axle center, motion bar is equal from the horizontal range of this pivot joint axle center and vernier spiral shell tooth perpendicular bisector with horizon bar to the length in screw rod axle center from this pivot joint axle center.
Make when motion bar be rotated down fall time, screw rod spiral shell tooth can be meshed with vernier spiral shell tooth and contact.
According to balance described in the utility model, the square section in described barrier plate face is trapezoidal, and bottom contacts with horizon bar, inclined-plane facing movament bar.
By arranging this barrier plate, make when screw rod spiral shell tooth and vernier spiral shell tooth are separated, motion bar can be fixed on specific position.
Balance of the present utility model in use, first screw rod spiral shell tooth and vernier spiral shell tooth are separated, stir vernier to roughly equilibrium position with hand, and then screw rod spiral shell tooth is meshed with vernier spiral shell tooth, rotating screw bolt handle 7, makes vernier move left and right under screw acting and finely tunes.
Balance tool of the present utility model has the following advantages:
1, can weigh more accurately;
2, decrease finger and the duration of contact of vernier, avoid vernier to be corroded.
Accompanying drawing explanation
Fig. 1 is the front view of the balance of embodiment 1; 1 be support, 2 be wherein scale, 3 be carrying disk, 4 be vernier, 5 be screw rod, 6 be screw bracket, 7 for screw handle;
Fig. 2 is the side view of vernier, 41 be the scale passage, 42 offered in vernier is wherein groove, 43 for vernier spiral shell tooth;
Fig. 3 is the vertical view of vernier;
Fig. 4 is the schematic diagram of screw rod, and wherein 51 is screw rod spiral shell tooth;
Fig. 5 is the screw bracket offering inverted L shape through hole, and wherein 61 is the second through hole for inverted L-shaped through hole, 62 is the first through hole, 63;
Fig. 6 is the screw bracket arranging motion bar and horizon bar, 71 be horizon bar, 72 is wherein motion bar, 73 for barrier plate.
Embodiment
By embodiment, in more detail explanation is explained to technical scheme of the present invention below, but it is not limitation of the present invention.
Embodiment 1
As Figure 1-5, the balance of the present embodiment comprises: support 1, scale 2, carrying disk 3, vernier 4, screw rod 5, and described screw rod 5 has screw rod spiral shell tooth 51, and described screw rod is arranged on the top of scale, and arc groove 42 is offered along screw rod direction in vernier top, groove inside surface arranges screw rod spiral shell tooth.Described groove square section can be any arc matched with screw diameter; Screw rod spiral shell tooth mates so that can be meshed with vernier spiral shell tooth.Can embed in arc groove when screw rod spiral shell tooth is moved downward, and screw rod spiral shell tooth is meshed with vernier spiral shell tooth and contacts.
Described scale two ends arrange screw bracket 6 respectively, described screw bracket offers inverted L-shaped through hole 61 along screw rod direction, that is: the first through hole 62 and the second through hole 63 is offered respectively at screw bracket, the diameter of the first through hole and the second through hole mates with screw diameter, screw rod can be rotated in the first through hole and the second through hole, wherein the first through hole is positioned at directly over vernier, the lower limb of the first through hole in the horizontal direction with vernier spiral shell tooth level mutually, the vertical height of the lower limb of the second through hole and the lower limb of the first through hole is substantially equal to the diameter of screw rod, and the second through hole center of circle and the first through hole center of circle horizontal range are substantially equal to the diameter of screw rod, roughly equal with the screw diameter channel connection of width is passed through between first through hole and the second through hole, screw rod can be slided between the first through hole and the second through hole by this passage freely, and when making screw rod be positioned at the first through hole, screw rod spiral shell tooth can be meshed with vernier spiral shell tooth and contact, and when screw rod is positioned at the second through hole, screw rod spiral shell tooth and vernier spiral shell tooth are separated.
In use, weighed object and counterweight is put well respectively in carrying disk, determine that screw rod is arranged in after the second through hole 63 makes screw rod spiral shell tooth be separated with vernier spiral shell tooth, stir vernier extremely roughly equilibrium position with hand, then screw rod is slided into the first through hole 62 from the second through hole, screw rod spiral shell tooth is engaged with vernier spiral shell tooth and contacts, rotating screw bolt, slider position is finely tuned, until Balance, reads reading.
Embodiment 2
The present embodiment is another preferred embodiment of the present utility model, and as shown in Figure 6, miscellaneous part is identical with embodiment 1 for wherein said screw rod.Described screw bracket comprises the horizon bar 71 be fixed on scale, horizon bar is relative to the other end pivot joint motion bar 72 connecting scale one end, motion bar is rotatable relative to the other end being articulated in horizon bar one end arranges screw rod, arranging square section on the top of horizon bar pivot joint motion bar one end is trapezoidal baffle plate 73, wherein start at from horizon bar and motion bar pivot joint axle center, motion bar is equal from the horizontal range of this pivot joint axle center and vernier spiral shell tooth perpendicular bisector with horizon bar to the length in screw rod axle center from this pivot joint axle center.Make when motion bar be rotated down fall time, screw rod spiral shell tooth can be meshed with vernier spiral shell tooth and contact.
Claims (7)
1. a balance, comprise support (1), scale (2), carrying disk (3) and vernier (4), it is characterized in that, described balance also comprises the screw rod (5) with screw rod spiral shell tooth (51), described scale two ends arrange screw bracket (6) respectively, described vernier top arranges vernier spiral shell tooth (43), described screw rod spiral shell tooth can engage coupling with vernier spiral shell tooth, described screw rod is mobilizable to be arranged on screw bracket, and is controlled to be meshed with vernier spiral shell tooth or to be separated by screw bracket.
2. balance according to claim 1, is characterized in that, described screw rod is arranged on the top of scale, and arc groove (42) is offered along screw rod direction in vernier top, and groove inside surface arranges vernier spiral shell tooth (43).
3. balance according to claim 2, is characterized in that, described groove square section is semicircle.
4. balance according to claim 1, it is characterized in that, screw bracket offers inverted L-shaped through hole (61) along screw rod direction, through-hole diameter is free to slide in through-holes for holding screw rod, when screw rod slides into the nearest edge of through hole vertical direction distance scale in through hole, the screw rod spiral shell tooth that screw rod is arranged can be mediated mutually with scale, and when screw rod slides into the coboundary of through hole in through hole, screw rod spiral shell tooth and scale is separated.
5. balance according to claim 1, it is characterized in that, described screw bracket comprises the horizon bar (71) be fixed on scale, horizon bar is relative to the other end pivot joint motion bar (72) connecting scale one end, motion bar is rotatable relative to the other end being articulated in horizon bar one end arranges screw rod, on the top of horizon bar pivot joint motion bar one end, barrier plate (73) is set, wherein start at from horizon bar and motion bar pivot joint axle center, motion bar is equal from the horizontal range of this pivot joint axle center and vernier spiral shell tooth perpendicular bisector with horizon bar to the length in screw rod axle center from this pivot joint axle center.
6. balance according to claim 5, is characterized in that, the square section in described barrier plate face is trapezoidal, and bottom contacts with horizon bar, inclined-plane facing movament bar.
7. balance according to claim 1, is characterized in that, the length of described screw rod spiral shell tooth is no less than scale label length.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420656850.2U CN204177456U (en) | 2014-11-05 | 2014-11-05 | A kind of balance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420656850.2U CN204177456U (en) | 2014-11-05 | 2014-11-05 | A kind of balance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204177456U true CN204177456U (en) | 2015-02-25 |
Family
ID=52566262
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420656850.2U Expired - Fee Related CN204177456U (en) | 2014-11-05 | 2014-11-05 | A kind of balance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204177456U (en) |
-
2014
- 2014-11-05 CN CN201420656850.2U patent/CN204177456U/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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150225 Termination date: 20151105 |
|
| EXPY | Termination of patent right or utility model |