Table type lifting adjusting ruler

Abstract

The utility model discloses a table type lifting adjusting ruler which comprises a base, a lifting assembly is fixedly arranged in the middle of the right side of the top of the base, a right-angle turning assembly is fixedly arranged at the upper end of the lifting assembly, a graduated scale is connected to the right side of the right-angle turning assembly in an inserted mode, and a card sliding plate containing block is arranged on the graduated scale in a sliding and sleeving mode. A forehead support assembly is fixedly arranged on the right side of the graduated scale. The utility model has the advantages that the device can be operated by a single person, does not need to be held by hands, improves the working efficiency, is very convenient to use, improves the comfort of a detected person, is convenient to quickly replace different examination cards according to different examination requirements, and is suitable for being used by more age groups.

Description

Technical Field

[0001] The utility model relates to the technical field of ophthalmic visual function examination, in particular to a desktop adjustable lifting ruler. Background Art

[0002] The adjustment ruler is a commonly used ophthalmic visual function examination instrument in ophthalmic clinics, mainly used for examining the accommodation amplitude, accommodation response, convergence near point, fusional amplitude, near-distance positive and negative fusional vergence, accommodation facility, positive and negative relative accommodation, reading distance of presbyopia, fine adjustment examination of accommodation far point and near point, and comparison with the normal values corresponding to the actual age.

[0003] At present, the existing adjustment rulers need two people to operate during use, cannot be operated by a single person, and need to be held by hand. There is no support point during use, which is very inconvenient. Content of the Utility Model

[0004] The purpose of the utility model is to provide a desktop adjustable lifting ruler, which has the advantages of single-person operation, no need to hold by hand, improved work efficiency, very convenient use, improved comfort of the examinee, easy to quickly replace different examination cards for different examination needs, and suitable for more age groups.

[0005] The above technical purpose of the utility model is achieved through the following technical solutions:

[0006] A desktop adjustable lifting ruler includes a base. A lifting component is fixedly arranged at the middle position on the right side of the top of the base. The upper end of the lifting component is fixedly provided with a right-angle turning component. A scale ruler is inserted on the right side of the right-angle turning component. A card slide placing block is slidably sleeved on the scale ruler. A forehead support component is fixedly arranged on the right side of the scale ruler.

[0007] The preferred solutions are as follows:

[0008] Preferably, the base is a square block, and a vertically arranged first screw rod is fixedly arranged at the middle position on the right side of the top of the base;

[0009] The lifting component includes a lower sleeve, a lifting rod, and a pagoda hand-tightening sleeve. The lower sleeve is a circular tube. An internal thread is arranged at the lower end inside the lower sleeve. The lower sleeve is threadedly connected with the first screw rod. The lifting rod is vertically inserted into the lower sleeve. The pagoda hand-tightening sleeve is sleeved between the lower sleeve and the lifting rod.

[0010] Preferably, a vertically arranged second screw rod is fixedly arranged at the top of the lifting rod;

[0011] The right-angle turning component includes a first fixing block, a hand-tightening nut, a first bolt, and a first nut. The first fixing block is a square block. A first circular perforation is provided in the middle position on the left side of the top of the first fixing block. A square groove is provided on the right side of the first fixing block. The first fixing block is inserted onto the second screw through the first circular perforation. The bottom of the first fixing block abuts against the top of the lifting rod. A hand-tightening nut is threadedly connected to the top of the second screw. The bottom of the hand-tightening nut abuts against the top of the first fixing block;

[0012] The scale is a rectangular strip. A square groove is provided on the right side of the first fixing block. The left side of the scale is inserted into the square groove;

[0013] A second circular perforation is provided on the right side of the top of the first fixing block. The second circular perforation communicates with the square groove. The first nut is fixedly located at the second circular perforation on the top of the first fixing block. The first bolt is threadedly connected and fixed to the first nut. The first bolt abuts against the top of the scale.

[0014] Preferably: The longitudinal vertical section of the card slide placing block is an isosceles trapezoid. A slider with a vertical section in the shape of a "return" is fixedly provided on the top of the card slide placing block. The slider is slidably sleeved on the scale;

[0015] A "T"-shaped groove is provided on the front side of the card slide placing block.

[0016] Preferably: The forehead support component includes an arc-shaped plate body, a second fixing block, a second nut, and a second bolt. The second fixing block is a square block. A slot is provided on the left side of the second fixing block. The arc-shaped opening of the arc-shaped plate body faces right. The left side of the arc-shaped plate body is fixedly connected to the right side of the second fixing block. A third circular perforation is provided on the top of the second fixing block. The second nut is fixedly located at the third circular perforation on the top of the second fixing block. The second fixing block is inserted into the right side of the scale through the slot. The second bolt is threadedly connected to the second nut. The second bolt abuts against the right side of the top of the scale.

[0017] Preferably: A sponge buffer pad is fixedly provided on the right side of the arc-shaped plate body.

[0018] Preferably: The scale is engraved with scales and marks.

[0019] In summary, the present utility model has the following beneficial effects:

[0020] 1. It is fixedly connected and fixed on the base through the threaded connection of the first screw and the lower sleeve. The lower sleeve and the lifting rod are connected through a pagoda hand-tightening sleeve. The scale is connected to the lifting rod through the right-angle turning component. It does not require two people to operate and does not require manual support during use, improving work efficiency and being very convenient to use;

[0021] 2. The scale is printed with scales and marks. The marks include the inspection normal reference values, the conversion values of diopter and accommodation power, as well as the accommodation distance and the corresponding values for age, which makes it more convenient and efficient to use.

[0022] 3. The right side of the arc-shaped plate body of the forehead support assembly is covered with a sponge cushion, which greatly improves the comfort of the person being examined.

[0023] 4. A movable card slide placement block is arranged on the scale, which can facilitate its quick sliding back and forth. At the same time, a groove is arranged on the card slide placement block to facilitate the quick replacement of different inspection cards according to different inspection needs.

[0024] 5. The lifting rod and the lower sleeve are connected by a pagoda hand-tightening sleeve. By loosening or tightening the pagoda hand-tightening sleeve, the height of the scale can be quickly adjusted to suit the person being examined of different heights. Tightening the pagoda hand-tightening sleeve can fix the adjusted height of the scale, making it more convenient to use and providing a more comfortable experience for the person being examined. Description of the Drawings

[0025] Figure 1 is the schematic diagram of the overall structural shape of the embodiment;

[0026] Figure 2 is the schematic diagram of the structure of the base and the first screw rod of the embodiment;

[0027] Figure 3 is the cross-sectional view of the lifting assembly and the right-angle turning assembly of the embodiment;

[0028] Figure 4 is the supporting inspection card set.

[0029] In the figure, 1, base; 2, lifting assembly; 3, right-angle turning assembly; 4, scale; 5, card slide placement block; 6, forehead support assembly; 111, first screw rod; 211, lower sleeve; 212, lifting rod; 213, pagoda hand-tightening sleeve; 214, second screw rod; 311, first fixing block; 312, hand-tightening nut; 313, first bolt; 314, first nut; 511, slider; 611, arc-shaped plate body; 612, second fixing block; 613, second nut; 614, second bolt; 615, sponge cushion. Detailed Description of the Embodiment

[0030] The following further details the present invention with reference to the accompanying drawings.

[0031] Among them, the same parts are denoted by the same reference numerals. It should be noted that the terms "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to the directions in the drawings.

[0032] A desktop adjustable lifting ruler, as Figures 1-4 shown, which includes a base 1. At the middle position on the right side of the top of the base 1, a lifting component 2 is fixedly provided. At the upper end of the lifting component 2, a right-angle turning component 3 is fixedly provided. A scale 4 is inserted into the right side of the right-angle turning component 3. A card slide placing block 5 is slidably sleeved on the scale 4. At the right side of the scale 4, a forehead support component 6 is fixedly provided.

[0033] The base 1 is a square block. At the middle position on the right side of the top of the base 1, a vertically arranged first screw rod 111 is fixedly provided;

[0034] The lifting component 2 includes a lower sleeve 211, a lifting rod 212, and a pagoda hand-tightening sleeve 213. The lower sleeve 211 is a circular tube. At the lower end inside the lower sleeve 211, internal threads are provided. The lower sleeve 211 is threadedly connected to the first screw rod 111. The lifting rod 212 is vertically inserted into the lower sleeve 211. The pagoda hand-tightening sleeve 213 is sleeved between the lower sleeve 211 and the lifting rod 212. The pagoda hand-tightening sleeve 213 is an external locking positioner for telescopic rods. After loosening, the lifting rod 212 can be conveniently lifted and lowered inside the lower sleeve 211.

[0035] In order to facilitate the fixation of the right-angle turning component, a vertically arranged second screw rod 214 is fixedly provided at the top of the lifting rod 212;

[0036] The right-angle turning component includes a first fixing block 311, a hand-tightening nut 312, a first bolt 313, and a first nut 314. The first fixing block 311 is a square block. At the middle position on the left side of the top of the first fixing block 311, a first circular through-hole is opened. At the right side of the first fixing block 311, a square groove is opened. The first fixing block 311 is inserted onto the second screw rod 214 through the first circular through-hole. The bottom of the first fixing block 311 abuts against the top of the lifting rod 212. A hand-tightening nut 312 is threadedly connected to the top of the second screw rod 214. The bottom of the hand-tightening nut 312 abuts against the top of the first fixing block 311. Through the hand-tightening nut 312, the fixation of the first fixing block 311 and the lifting rod 212 can be completed.

[0037] The scale 4 is a cuboid strip. The scale 4 is engraved with scales and marks. The marks include inspection normal reference values, diopter and adjustment power conversion values, as well as adjustment distances and age corresponding values, so as to facilitate more convenient use.

[0038] A square groove is opened at the right side of the first fixing block 311. The left side of the scale 4 is inserted into the square groove;

[0039] On the upper right side of the top of the first fixing block 311, a second circular perforation is provided, which is communicated with the square groove. The first nut 314 is fixedly located at the second circular perforation on the top of the first fixing block 311. The first bolt 313 is threadedly connected and fixed to the first nut 314. The first bolt 313 abuts against the top of the scale 4. By tightening the first bolt 313, the fixing of the adjusting ruler and the first fixing block 311 can be completed.

[0040] The longitudinal vertical section of the card slide placing block 5 is an isosceles trapezoid. On the top of the card slide placing block 5, a slider 511 with a "return" - shaped vertical section is fixedly provided. The slider 511 is slidably sleeved on the scale 4.

[0041] On the front side of the card slide placing block 5, a "T" - shaped groove is provided, and a matching inspection card set is inserted into the groove. The matching inspection card set includes a children's visual acuity card set and an adult visual acuity card set, which is suitable for use in more age groups.

[0042] The forehead support assembly 6 includes an arc - shaped plate body 611, a second fixing block 612, a second nut 613, and a second bolt 614. The second fixing block 612 is a square block. On the left side of the second fixing block 612, a slot is provided. The arc - shaped opening of the arc - shaped plate body 611 faces right. The left side of the arc - shaped plate body 611 is fixedly connected to the right side of the second fixing block 612. On the top of the second fixing block 612, a third circular perforation is provided. The second nut 613 is fixedly located at the third circular perforation on the top of the second fixing block 612. The second fixing block 612 is inserted into the right side of the scale 4 through the slot. The second bolt 614 is threadedly connected to the second nut 613, and the second bolt 614 abuts against the upper right side of the top of the scale 4. A sponge buffer pad 615 is fixedly provided on the right side of the arc - shaped plate body 611.

[0043] Specific installation process:

[0044] Step 1: The pagoda hand - tightened sleeve 213 is sleeved on the upper end of the outer side wall of the lower sleeve 211. The lifting rod 212 is inserted into the interior of the lower sleeve 211. Rotate the pagoda hand - tightened sleeve 213 to fix the lifting rod 212.

[0045] Step 2: Threadedly connect the lower sleeve 211 to the first screw rod 111 of the base 1.

[0046] Step 3: Insert the first fixing block 311 through the first circular perforation onto the second screw rod 214, making the opening of the square groove of the first fixing block 311 face right. Thread a hand - tightened nut 312 onto the second screw rod 214. The bottom of the hand - tightened nut 312 abuts against the top of the first fixing block 311, and fix the first fixing block 311 between the lifting rod 212 and the hand - tightened nut 312.

[0047] Step 4: Insert the scale 4 into the square groove, and rotate the first bolt 313. The first bolt 313 presses the scale 4 tightly.

[0048] Step 5: Place the card slide placing block 5 on the scale 4 through the slider 511.

[0049] Step 6: Insert the second fixing block 612 into the right side of the scale 4 through the slot, so that the arc-shaped plate body 611 is fixed on the right side of the scale 4. Tighten the second bolt 614, and the second bolt 614 abuts against the top right side of the scale 4.

[0050] Specific implementation process:

[0051] 1. Adjust the instrument before inspection

[0052] If the person to be examined has refractive error, they need to wear glasses with full refractive correction. Adjust the height of the scale 4 to a suitable height for the person to be examined by loosening or tightening the hand-twisted pagoda sleeve until it reaches a comfortable height for the person to be examined.

[0053] 2. Check the accommodation amplitude

[0054] Insert the visual acuity chart in the supporting inspection card set into the groove of the card slide placing block 5. Lean the arc-shaped plate body 611 against the forehead of the person to be examined, place the visual acuity chart horizontally at the farthest distance that the person to be examined can see clearly, fix their gaze on the line above the maximum corrected visual acuity on the visual acuity chart, and then slowly move the card slide placing block 5 towards the eyes, always keeping the image clear.

[0055] When the visual acuity chart becomes blurred, record the value of the position of the visual acuity chart on the scale 4. This value is the accommodation near point of the person to be examined.

[0056] 3. Check the convergence near point

[0057] Open both eyes, insert the visual acuity chart in the supporting inspection card set into the groove of the card slide placing block 5, lean the arc-shaped plate body 611 against the forehead of the person to be examined, and slowly move the card slide placing block 5 towards the eyes of the person to be examined until the visual acuity chart appears broken. Record the value on the scale 4 at this time. This point is the convergence near point of the person to be examined. Measure three times repeatedly and take the average value.

[0058] 4. Use the prism flipper to cooperate in checking the fusional vergence amplitude

[0059] 1. Find the visual acuity chart line above the best near visual acuity of the person to be examined.

[0060] 2. Use the 3 / 12 prism flipper for cooperation.

[0061] 3. Keep both eyes open. Adjust the 3 / 12 prism flipper to the same pupillary distance as the subject. Adjust the visual acuity chart in the supporting examination card set to a distance of 40 cm from the subject. First, place the 3BI lens bar in front of the subject's eyes and let the subject read the direction of the first visual acuity target. Then flip it to 12BO and let the subject read the direction of the second visual acuity target. Repeat this cycle until 1 minute is up and record the passed values. One positive and one negative count as a group.

[0062] The normal value of convergence and divergence sensitivity is: FVF: 13 - 15 cpm;

[0063] V: Use the double-row BI and BO prism bar to cooperate with the near positive and negative fusional vergence examination

[0064] 1. Find the ascending visual acuity target of the subject's best near visual acuity.

[0065] 2. Use the double-row BI and BO prism bar in cooperation.

[0066] 3. Keep both eyes open. Adjust the double-row BI and BO prism bar to the same pupillary distance as the subject. Adjust the visual acuity chart in the supporting examination card set to a distance of 40 cm from the subject. Place the BI lens bar in front of the subject's eyes and push it downwards until the subject reports: blurry. Record the prism diopter value of both eyes at this time. Then push it downwards again until the subject reports: "break". Record the prism diopter value of both eyes at this time. Note that at this time, it needs to be pushed upwards until the subject says that the visual acuity target has become one again, and record the binocular prism value at this time as the "recovery point".

[0067] 4. Place the BO lens bar in front of the subject's eyes and push it downwards and then pull it downwards until the subject reports: "blurry". Record the prism diopter value of both eyes at this time. Then pull it downwards again until the subject reports: "break", and record the prism diopter value of both eyes at this time. Note that at this time, it needs to be pushed upwards until the subject says that the visual acuity target has become one again, and record the binocular prism value at this time as the "recovery point".

[0068] This specific embodiment is only an explanation of the present invention, and it is not a limitation of the present invention. Those skilled in the art can make modifications to this embodiment without creative contributions according to needs after reading this specification, but as long as it is within the scope of the claims of the present invention, it is protected by the patent law.

Claims

1. A desktop adjustable lifting ruler, characterized in that: It includes a base (1). At the middle position on the right side of the top of the base (1), a lifting component (2) is fixedly provided. At the upper end of the lifting component (2), a right-angle turning component (3) is fixedly provided. A scale (4) is inserted into the right side of the right-angle turning component (3). A card slide placing block (5) is slidably sleeved on the scale (4). A forehead support component (6) is fixedly provided at the right side of the scale (4).

2. The desktop lift-adjustable ruler according to claim 1, wherein: The base (1) is a square block. At the middle position on the right side of the top of the base (1), a vertically arranged first screw rod (111) is fixedly provided; The lifting component (2) includes a lower sleeve (211), a lifting rod (212), and a pagoda hand-tightening sleeve (213). The lower sleeve (211) is in a circular tube shape. At the lower end inside the lower sleeve (211), an internal thread is provided. The lower sleeve (211) is threadedly connected to the first screw rod (111). The lifting rod (212) is vertically inserted into the lower sleeve (211). The pagoda hand-tightening sleeve (213) is sleeved between the lower sleeve (211) and the lifting rod (212).

3. The desktop adjustable lifting ruler according to claim 2, characterized in that: At the top of the lifting rod (212), a vertically arranged second screw rod (214) is fixedly provided; The right-angle turning component (3) includes a first fixing block (311), a hand-tightening nut (312), a first bolt (313), and a first nut (314). The first fixing block (311) is a square block. At the middle position on the left side of the top of the first fixing block (311), a first circular through-hole is opened. At the right side of the first fixing block (311), a square groove is opened. The first fixing block (311) is inserted onto the second screw rod (214) through the first circular through-hole. The bottom of the first fixing block (311) abuts against the top of the lifting rod (212). A hand-tightening nut (312) is threadedly connected to the top of the second screw rod (214). The bottom of the hand-tightening nut (312) abuts against the top of the first fixing block (311); The scale (4) is in a rectangular strip shape. A square groove is opened at the right side of the first fixing block (311). The left side of the scale (4) is inserted into the square groove; A second circular through-hole is opened at the right side of the top of the first fixing block (311). The second circular through-hole is communicated with the square groove. The first nut (314) is fixedly located at the second circular through-hole at the top of the first fixing block (311). The first bolt (313) is threadedly connected and fixed to the first nut (314). The first bolt (313) abuts against the top of the scale (4).

4. The desktop lift-adjustable ruler according to claim 3, characterized in that: The longitudinal vertical section of the card slide placing block (5) is an isosceles trapezoid. At the top of the card slide placing block (5), a slider (511) with a "return" - shaped vertical section is fixedly provided. The slider (511) is slidably sleeved on the scale (4); A "T" - shaped groove is opened at the front side of the card slide placing block (5).

5. The desktop adjustable lifting ruler according to claim 3, characterized in that: The forehead support assembly (6) includes an arc-shaped plate body (611), a second fixing block (612), a second nut (613), and a second bolt (614). The second fixing block (612) is in the shape of a square block, and a slot is provided in the left side portion of the second fixing block (612). The arc-shaped opening of the arc-shaped plate body (611) faces right, and the left side portion of the arc-shaped plate body (611) is fixedly connected to the right side portion of the second fixing block (612). A third circular perforation is provided at the top of the second fixing block (612), and the second nut (613) is fixedly located at the third circular perforation at the top of the second fixing block (612). The second fixing block (612) is inserted into the right side portion of the scale (4) through the slot. The second bolt (614) is threadedly connected to the second nut (613), and the second bolt (614) abuts against the top right side of the scale (4).

6. The desktop lift-adjustable ruler according to claim 5, characterized in that: A sponge buffer pad (615) is fixedly provided on the right side portion of the arc-shaped plate body (611).

7. The desktop lift-adjustable ruler according to claim 2, wherein: Scales and marks are engraved on the scale (4).

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