A unit adjustable scale

Abstract

The invention discloses a unit adjustable scale, and relates to the technical field of scales. The unit adjustable scale comprises a telescopic connecting rod and an hour scale, wherein the telescopic connecting rod comprises a connecting rod assembly, an intermediate shaft and an end shaft, a scale block is sleeved on the end shaft, and the scale block is provided with hour scales, and a telescopic rod is fixedly provided between every two opposite scale blocks. The unit adjustable scale combines the principle of a telescopic bracket with a scale, and the range of the scale can be changed by adjusting the telescopic length or opening and closing angle of the telescopic bracket, thereby greatly improving the range quantity retention rate when converting from a small unit to a large unit.

Description

Technical Field

[0001] The invention relates to the technical field of scales, in particular to a scale with adjustable units. Background Art

[0002] A ruler is a tool that uses length units as standard to mark scale marks and measure the length of an object. The scale is usually 1mm, and the general student range is 10cm, 15cm, and 20cm. Measuring length with a ruler is a basic skill in physics experiments and is also the basis for the correct reading of other measuring instruments.

[0003] However, the traditional scale has a shorter range and fewer units (usually two units are set on both sides of the scale), such as Figure 1 , especially when converting the units of the ruler, since the length of the ruler is immutable, when converting from a smaller unit (such as centimeters) to a larger unit (such as inches), the scale range will be reduced under the larger unit, such as Figure 1 In the illustrated scale, when inches are selected as the unit of measurement, only the 3-inch range is available.

[0004] In order to facilitate the study of the degree of change in the number of ranges when a ruler is converted from small units to large units, the concept of range number retention rate is proposed. The range number retention rate is equal to the number of ranges of small units of a ruler of equal length divided by the number of ranges of large units. For example, a ruler with a range of 10 cm is only 3 inches when converted to inches, so the range number retention rate of this ruler after unit conversion is 30%.

[0005] The existing utility model with application number CN200720007022.6 discloses an automatic positioning folding ruler.

[0006] Although the utility model solves some problems, there are still the following problems that need to be solved during use:

[0007] Although the utility model increases the measuring range of the ruler by folding and also increases the measuring range when converted to larger units, the measuring range improvement for larger units is still small under the limited length of the ruler. For example, the unfolded measuring range of the ruler of the utility model is 30 cm, so when converted to inches, it is still only 11 inches (the measuring range retention rate is 37%).

[0008] Therefore, the inventors provide a unit-adjustable scale based on the principle of equidistant (equal-proportional) telescopic extension of the telescopic bracket, in order to achieve the purpose of having greater practical value. Summary of the invention

[0009] 1. Technical issues to be resolved

[0010] In view of the deficiencies of the prior art, the present invention provides a unit-adjustable ruler, which solves the problem that when a traditional ruler is converted from a smaller unit (such as centimeters) to a larger unit (such as inches), the scale range is reduced under the larger unit.

[0011] (II) Technical solution

[0012] To achieve the above objectives, the present invention is implemented through the following technical solutions: a unit adjustable scale, including a telescopic connecting rod and an integral point scale, the telescopic connecting rod includes a connecting rod assembly, an intermediate shaft and an end shaft, a scale block is sleeved on the end shaft, the scale block is provided with an integral point scale, and a telescopic rod is fixedly arranged between every two relative scale blocks.

[0013] Preferably, a secondary telescopic connecting rod is fixedly connected to the intermediate shaft, and a scale component is provided on the secondary telescopic connecting rod.

[0014] Preferably, the secondary telescopic connecting rod includes a secondary connecting rod assembly, a secondary end shaft and a secondary intermediate shaft, the scale assembly includes a telescopic rod assembly, a connecting head and a half-point scale block, the half-point scale block is sleeved on the telescopic rod assembly, and one end of the telescopic rod assembly is hinged to the half-point scale block through the secondary end shaft.

[0015] Preferably, a half-point scale block is provided at one end of the telescopic rod assembly.

[0016] Preferably, half-point scale blocks are provided at both upper and lower ends of the telescopic rod assembly.

[0017] Preferably, a telescopic rod assembly is provided between the group of secondary end shafts, a connecting head is provided in the middle of the telescopic rod assembly, and a half-point scale is provided on the half-point scale block.

[0018] Preferably, the connecting head and the intermediate shaft are integrally formed.

[0019] Preferably, the end of the half-point scale block is flush with the end of the scale block.

[0020] Preferably, a positioning structure is provided on the connecting rod assembly, which can fix the distance between the whole point scales.

[0021] (III) Beneficial effects

[0022] The present invention provides a unit adjustable scale having the following beneficial effects:

[0023] The unit adjustable scale combines the principle of the telescopic bracket with the scale. The scale range can be changed by adjusting the telescopic length or opening and closing angle of the telescopic bracket, which greatly improves the range quantity retention rate when converting from small units to large units. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the structure of the scale in the prior art;

[0025] Figure 2 It is a front view of the structure of the present invention;

[0026] Figure 3 It is a rear view of the structure of the present invention;

[0027] Figure 4 Schematic diagram of the secondary telescopic connecting rod structure;

[0028] Figure 5 Front view of the structure of the present invention (including the auxiliary telescopic connecting rod and the scale assembly);

[0029] Figure 6 It is a front view of the structure of the present invention;

[0030] Figure 7 This is a rear view of the structure of the present invention;

[0031] Figure 8 This is a front view of the structure of the present invention (including the secondary telescopic connecting rod and the scale assembly);

[0032] Fig. 9 This is a rear view of the structure of the present invention when it is unfolded (a half-point scale block is arranged on one side).

[0033] In the figure: 1. connecting rod assembly; 2. intermediate shaft; 3. end shaft; 4. scale block; 5. telescopic rod; 6. telescopic rod assembly; 7. connecting head; 8. secondary connecting rod assembly; 9. half-point scale block; 10. secondary end shaft; 11. secondary intermediate shaft. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] The following examples (contracted state) and comparative examples are all scales with a range of 10 cm. Finally, the advantages of the examples over the traditional scales are compared by the range retention rate (the range retention rate is calculated based on centimeters to inches).

[0036] Example 1: A scale that can adjust units without reducing the number of units

[0037] The telescopic connecting rod comprises a connecting rod assembly 1, an intermediate shaft 2 and an end shaft 3. A scale block 4 is sleeved on the end shaft 3. The scale block 4 is provided with an hour scale. A telescopic rod 5 is fixedly arranged between every two opposite scale blocks 4. A positioning structure is arranged on the connecting rod assembly 1. The telescopic rod 5 can prevent the scale block 4 from rotating when the telescopic connecting rod is in motion and keep the end of the scale block 4 flush. At the same time, the telescopic rod 5 can also adjust the distance between the telescopic connecting rod and the relative scale block 4 when the telescopic connecting rod is in motion.

[0038] The unit of the scale can be determined by adjusting the degree of opening and closing of the connecting rod assembly 1. When the scale is in a fully retracted state (such as Figure 2 ), the distance between the whole point scale is 0.5cm, which can be used as a centimeter ruler (accuracy is 0.5cm); when adjusting the opening connecting rod assembly 1 (such as Figure 6 ), the distance between each whole point scale can be increased, thereby converting to a larger range unit.

[0039] Embodiment 2: Further improving the measurement accuracy of one side of the scale

[0040] In order to further improve the measurement accuracy of the scale, a secondary telescopic connecting rod is fixedly connected to the intermediate shaft 2, and a scale assembly is arranged on the secondary telescopic connecting rod. The secondary telescopic connecting rod includes a secondary connecting rod assembly 8, a secondary end shaft 10 and a secondary intermediate shaft 11. The scale assembly includes a telescopic rod assembly 6, a connector 7 and a half-point scale block 9. The half-point scale block 9 is sleeved on the telescopic rod assembly 6. One end of the telescopic rod assembly 6 is hinged to the half-point scale block 9 through the secondary end shaft 10. One end of the telescopic rod assembly 6 is provided with a half-point scale block 9. A telescopic rod assembly 6 is arranged between a group of secondary end shafts 10, a connecting head 7 is arranged in the middle of the telescopic rod assembly 6, a half-point scale block 9 is arranged with a half-point scale, the connecting head 7 is integrally formed with the intermediate shaft 2, the end of the half-point scale block 9 is flush with the end of the scale block 4, and the half-point scale block 9 arranged at one end of the telescopic rod assembly 6 can adjust the half-point scale block 9 as the telescopic link is opened. At the same time, the connecting head 7 is integrally formed with the intermediate shaft 2, so that the secondary telescopic link can be synchronously driven when the telescopic link moves.

[0041] The unit of the scale can be determined by adjusting the degree of opening and closing of the connecting rod assembly 1. When the scale is in a fully retracted state (such as Figure 5 ), the distance between the full point scale and the half point scale is 0.25cm, which can be used as a centimeter ruler (accuracy is 0.25cm); when adjusting the opening connecting rod assembly 1 (such as Fig. 9 ), the distance between each whole point scale can be increased, thereby converting to a larger range unit. The setting of the half-point scale also improves the accuracy of the scale.

[0042] Embodiment 3: Further improving the measurement accuracy on both sides of the scale

[0043] On the basis of Example 2, half-point scale blocks 9 are provided at both ends of the telescopic rod assembly 6, which can improve the measurement accuracy of both sides of the scale. Figure 8 .

[0044] Comparative Example 1: Traditional dual unit scale (such as Figure 1 )

[0045] The following table compares the implementation effects of various embodiments and comparative examples.

[0046] project Accuracy Range quantity retention rate Example 1 0.5cm 100％ Example 2 0.25cm (one side) 100％ Example 3 0.25cm (both sides) 100％ Comparative Example 1 0.1cm 30％

[0047] In summary, the unit adjustable scale combines the principle of the telescopic bracket with the scale, and can change the scale range by adjusting the telescopic length or opening and angle of the telescopic bracket, which greatly improves the range quantity retention rate when converting from small units to large units.

[0048] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0049] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A unit adjustable scale, comprising a telescopic connecting rod and an integral point scale, characterized in that: The telescopic connecting rod comprises a connecting rod assembly (1), an intermediate shaft (2) and an end shaft (3); a scale block (4) is sleeved on the end shaft (3); the scale block (4) is provided with hour scales; a telescopic rod (5) is fixedly provided between every two opposing scale blocks (4); The telescopic rod (5) can prevent the scale block (4) from rotating when the telescopic connecting rod moves and can keep the ends of the scale block (4) flush; When the connecting rod assembly (1) is adjusted, the distance between each integral scale mark can be increased, thereby converting to a larger range unit.

2. A unit adjustable scale according to claim 1, characterized in that: A secondary telescopic connecting rod is fixedly connected to the intermediate shaft (2), and a scale assembly is provided on the secondary telescopic connecting rod.

3. A unit adjustable scale according to claim 2, characterized in that: The secondary telescopic connecting rod comprises a secondary connecting rod assembly (8), a secondary end shaft (10) and a secondary intermediate shaft (11); the scale assembly comprises a telescopic rod assembly (6), a connecting head (7) and a half-point scale block (9); the half-point scale block (9) is sleeved on the telescopic rod assembly (6); one end of the telescopic rod assembly (6) is hinged to the half-point scale block (9) via the secondary end shaft (10).

4. A unit adjustable scale according to claim 3, characterized in that: A half-point scale block (9) is provided at one end of the telescopic rod assembly (6).

5. A unit adjustable scale according to claim 3, characterized in that: Half-point scale blocks (9) are provided at both the upper and lower ends of the telescopic rod assembly (6).

6. A unit adjustable scale according to claim 4 or 5, characterized in that: A telescopic rod assembly (6) is arranged between a group of secondary end shafts (10), a connecting head (7) is arranged in the middle of the telescopic rod assembly (6), and a half-point scale block (9) is provided with a half-point scale.

7. A unit adjustable scale according to claim 6, characterized in that: The connecting head (7) and the intermediate shaft (2) are integrally formed.

8. A unit adjustable scale according to claim 7, characterized in that: The end of the half-point scale block (9) is flush with the end of the scale block (4).

9. The unit adjustable scale according to claim 1, characterized in that: The connecting rod assembly (1) is provided with a positioning structure, which can fix the distance between the hour scales.

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