CN217186082U

CN217186082U - Vision test instrument

Info

Publication number: CN217186082U
Application number: CN202220421662.6U
Authority: CN
Inventors: 朱孟军
Original assignee: Ningbo Zheding Education Technology Co ltd
Current assignee: Ningbo Zheding Education Technology Co ltd
Priority date: 2022-02-28
Filing date: 2022-02-28
Publication date: 2022-08-16
Anticipated expiration: 2032-02-28

Abstract

The utility model relates to a vision test instrument relates to the field of check out test set, and it includes the host computer and the wireless direction selector of being connected with the host computer, be provided with the clamping component who supplies wireless direction selector to place on the lateral wall of host computer, clamping component includes butt rod, two first supporting rods and clamping jaw, two the one end of first supporting rod all rotates with the same end of butt rod and connects, two the other end and the clamping jaw of first supporting rod are connected, the other end fixedly connected with of butt rod supplies the butt claw of wireless direction selector butt. The problem of the mesa of host computer and the frictional force between the selector less, place easy landing after and damage is improved, this application has and makes even the selector bumps also can be difficult for rocking and dropping under the gravity of selector self, has improved the life's of selector effect.

Description

Vision test instrument

Technical Field

The application relates to the field of detection equipment, in particular to a vision test instrument.

Background

Along with the development of society, people pay more and more attention to the protection of eyes, so to the relevant test instrument of eyesight more and more, and the tradition is to the inspection of eyesight, adopts the vision tester to carry out preliminary inspection usually, and the vision tester collection is the instrument of multiple advantages such as collection precision, convenience, multifunctionality in an organic whole.

In the related art, the vision testing device comprises an intelligent host and a peripheral, wherein the intelligent host is connected with the peripheral in a wireless communication mode, and the peripheral comprises a wireless sighting target display and a wireless direction selector. The utility model discloses in, adopt wireless technology, the equal wireless connection of host computer, wireless sighting mark display and wireless direction selector adopts lithium battery powered, and the scene does not have any connecting wire harness, and is safer convenient, combines intelligent software, can realize extensive crowd's test, and automatic recording and statistics are printed. After the test is finished, the wireless direction selector is directly placed on the table board of the host machine for the next user to use.

In view of the above-mentioned related art, the inventor believes that the friction between the table top of the main body and the selector is small, and the main body is easy to slide and damage after being placed, and has room for improvement.

SUMMERY OF THE UTILITY MODEL

In order to improve the problem that the mesa of host computer and the frictional force between the selector are less, place the easy landing and damage of back, this application provides an eyesight test instrument.

The application provides a vision test instrument adopts following technical scheme:

the utility model provides a vision testing instrument, includes host computer and the wireless direction selector of being connected with the host computer, be provided with the clamping component that supplies wireless direction selector to place on the lateral wall of host computer, clamping component includes butt joint pole, two first supporting rod and clamping jaw, two first supporting rod rotates respectively to be connected on the lateral wall of host computer, two the one end of first supporting rod all rotates with the one end of butt joint pole to be connected, two the other end and the clamping jaw of first supporting rod are connected, the butt joint claw that the other end fixedly connected with of butt joint pole supplied the wireless direction selector butt.

Through adopting above-mentioned technical scheme, through setting up clamping component for when wireless direction selector is placed on clamping component, clamping jaw cooperation movable support presss from both sides wireless direction selector tightly and is difficult for dropping, even the collision also can be difficult for rocking and dropping under the gravity of selector self, has improved the life of selector.

Optionally, the side wall of the main frame is rotatably connected with two first sliding cylinders, and the two first sliding cylinders are sleeved on the first clamping rods in a one-to-one correspondence manner.

Through adopting above-mentioned technical scheme, through setting up a slip section of thick bamboo for first supporting rod both can with the host computer between take place to slide, also can take place to rotate, first supporting rod is more nimble, has improved clamping component's smoothness nature.

Optionally, one side fixedly connected with rotation post that first sliding cylinder is close to the host computer, fixedly connected with supplies to rotate post male installation section of thick bamboo on the lateral wall of host computer, fixedly connected with joint ring on the circumference lateral wall of rotation post, be provided with on the inside wall of installation section of thick bamboo and supply the joint ring to inlay the annular of establishing the joint.

Through adopting above-mentioned technical scheme, through setting up the joint ring, the joint ring inserts in the installation section of thick bamboo and inlays and establish the joint in the annular for the rotation post is difficult to break away from in the installation section of thick bamboo, has improved the installation effectiveness of a slip section of thick bamboo.

Optionally, a second sliding barrel for the abutting rod to penetrate through and to slide up and down is fixedly connected to the side wall of the main machine.

Through adopting above-mentioned technical scheme, the relative position of butt-joint pole has been restricted in the setting of second slip section of thick bamboo, and the butt pole can only reciprocate and is difficult for controlling and rock for butt-joint pole and two first supporting rod in-process remain the symmetric state throughout, thereby make two first supporting rods carry out the centre gripping to the selector simultaneously and be difficult for leaning on one side and turn on one's side, improved the stability of movable support activity.

Optionally, a supporting plate is fixedly connected to the side wall of the main machine, a compression spring is arranged on the supporting plate, and one end, far away from the supporting plate, of the compression spring is abutted to the abutting claw.

By adopting the technical scheme, the arrangement of the compression spring provides the selector to support force on one hand, so that when a user takes the selector, the holding force can be reduced by virtue of the force of one part of the compression spring; on the other hand, when the abutting claw is not provided with the selector, the abutting claw moves upwards to open the two clamping jaws, so that the selector is conveniently placed in.

Optionally, the abutting claw is fixedly connected with a guide post, and the guide post penetrates through the compression spring.

Through adopting above-mentioned technical scheme, the setting of guide post for compression spring is difficult for controlling the wrench movement and buckles or even fracture at last under compression and the extension in-process, has improved compression spring's availability factor and life.

Optionally, the clamping jaw is rotatably connected to one end, away from the butt joint rod, of the first clamping rod, and the gravity block is fixedly connected to the lower side of the clamping jaw.

Through adopting above-mentioned technical scheme, the setting of gravity piece for the clamping jaw is moving the in-process and is keeping vertical state all the time, and the claw arm of in-process clamping jaw near the selector is horizontal migration all the time, has improved the stability of clamping jaw centre gripping.

Optionally, the clamping jaw includes dwang and second supporting rod, the dwang rotates to be connected on first supporting rod, the one end that first supporting rod was kept away from to second supporting rod fixed connection in the dwang, form the space that supplies wireless direction selector to place between first supporting rod and the second supporting rod, one side that second supporting rod is close to first supporting rod is equipped with the spigot surface, the spigot surface is located the one end that the dwang was kept away from to the second supporting rod.

Through adopting above-mentioned technical scheme, the setting of spigot surface for the opening of clamping jaw increases, and in the wireless direction selector of guide got into the space, the efficiency of clamping jaw centre gripping has been improved.

Optionally, the clamping assembly further comprises:

the detection module is used for detecting the pressure between the butting claw and the wireless direction selector and converting a physical pressure quantity into a pressure detection signal;

the reference module is used for generating a reference signal for the comparison module;

the comparison module is connected with the detection module and the reference module and used for receiving the detection signal and the reference signal and outputting a comparison signal;

the indicating module is connected with the comparing module and used for receiving the comparing signal and responding to the comparing signal to realize indication;

when the detection signal is smaller than the reference signal, the comparison module outputs a comparison signal, and the indication module is conducted to realize light emission after receiving the comparison signal;

when the detection signal is larger than the reference signal, the comparison module does not output, and the indication module does not receive the comparison signal and does not emit light.

By adopting the technical scheme, the detection signal and the reference signal are compared, and if the voltage value of the detection signal is greater than that of the reference signal, the output end of the comparison module can output a high-level comparison signal, so that the circuit of the indicator lamp is conducted to control the indicator lamp to emit light. The setting of reference signal makes the unable normal work that influences the pilot lamp of some external touching, has improved the stability of pilot lamp when using.

Optionally, the indicating module includes:

the indicating unit is arranged on the host machine and used for receiving the conducting signal, and when the conducting signal is received, the indicating unit emits light;

and the control unit is connected to the comparison module and used for receiving the comparison signal and outputting a conducting signal when receiving the comparison signal.

Through adopting above-mentioned technical scheme, the setting of instruction unit and the control unit for when detecting pressure, when detecting the lateral wall butt of selector promptly on the dwang, the pilot lamp lights, and the instruction is placed normally, makes placing of selector more visual, has improved the accuracy that the selector was placed.

In summary, the present application includes at least one of the following beneficial technical effects:

by arranging the movable support and the clamping jaw, the selector is not easy to shake and fall under the gravity of the selector even if collision occurs, and the service life of the selector is prolonged;

the arrangement of the second sliding barrel enables the two first clamping rods to simultaneously clamp the selector and not to incline to one side to turn over, so that the stability of the movement of the movable support is improved;

the setting of indicating device for the placing of selector is more visual, has improved the accuracy that the selector was placed.

Drawings

Fig. 1 is a schematic structural diagram of a vision testing apparatus in an embodiment of the present application.

Fig. 2 is an exploded schematic view of a clamping assembly in an embodiment of the present application.

Fig. 3 is a schematic structural diagram of a main unit and a mounting barrel in an embodiment of the present application.

Fig. 4 is a circuit diagram of an indicating apparatus according to an embodiment of the present application.

Description of reference numerals: 1. a host; 11. a clamping assembly; 111. a butting rod; 1111. a butting claw; 112. a first clamping rod; 113. a clamping jaw; 1131. rotating the rod; 1132. a second clamping rod; 11321. a guide surface; 1133. a gravity block; 1134. anti-collision rubber; 12. mounting the cylinder; 121. a ring groove; 13. rotating the column; 131. a snap ring; 14. a first slipping cylinder; 15. a second slipping cylinder; 16. a support plate; 17. a compression spring; 18. a guide post; 2. a wireless display; 3. a wireless direction selector; 4. a detection module; 5. a reference module; 6. a comparison module; 7. an indication module; 71. a control unit; 72. and an indication unit.

Detailed Description

The present application is described in further detail below with reference to figures 1-4.

The embodiment of the application discloses a vision test instrument. Referring to fig. 1, the vision testing apparatus includes a host 1, a wireless display 2, and a wireless direction selector 3.

The host 1, the wireless display 2 and the wireless direction selector 3 are connected in a wireless communication mode. The main body 1 is provided with a clamping component 11, and the wireless direction selector 3 is placed on the clamping component 11 to prevent falling.

Referring to fig. 2 and 3, the clamping assembly 11 includes an abutment bar 111, two first clamping bars 112 and a clamping jaw 113. Two mounting cylinders 12 are fixedly connected to one side of the main body 1. All wear to be equipped with in two installation section of thick bamboos 12 and rotate post 13, installation section of thick bamboos 12 and rotate the coaxial setting of post 13 for rotate the post 13 can with the installation section of thick bamboo 12 between take place relative rotation. Fixedly connected with joint ring 131 on the circumference lateral wall of rotation post 13, joint ring 131 and the coaxial setting of rotation post 13 have annular 121 on the inside wall of installation cylinder 12, when rotating in post 13 inserts the installation cylinder 12, joint ring 131 inlays and establishes and the joint in annular 121 for it breaks away from in installation cylinder 12 not easily to rotate post 13. One side of the rotating column 13, which is far away from the host 1, is fixedly connected with the first sliding barrel 14, and the two first clamping rods 112 penetrate through the first sliding barrel 14 in a one-to-one correspondence manner, so that the first clamping rods 112 can rotate around the mounting barrel 12 and can slide along the length direction of the first sliding barrel 14.

Referring to fig. 2, the jaw 113 includes a rotating bar 1131 and a second clamping bar 1132. The rotating rod 1131 is rotatably connected to one end of the first clamping rod 112, in this embodiment, the rotating rod 1131 is located at the upper end of the first clamping rod 112, the rotating rod 1131 and the first clamping rod 112 are arranged perpendicular to each other, and the second clamping rod 1132 is fixedly connected to one end of the rotating rod 1131 far away from the first clamping rod 112, so that the first clamping rod 112, the rotating rod 1131 and the second clamping rod 1132 are matched to form a space for placing the wireless direction selector 3.

In order to keep the second clamping bar 1132 horizontally disposed all the time during the rotation of the first clamping bar 112, a weight 1133 is fixedly connected to the lower side of the clamping jaw 113, where the weight 1133 is located on the second clamping bar 1132. The weight 1133 is here biased to the side away from the second clamping rod 1132, so that the centre of gravity of the entire clamping jaw 113 is in the vertical plane of the swivelling rod 1131.

One side of the second clamping rod 1132 near the first clamping rod 112 has a guide surface 11321, and the guide surface 11321 further extends to one end of the second clamping rod 1132 away from the rotating rod 1131, so that the space on the side away from the rotating rod 1131 is large, and the wireless direction selector 3 is guided to enter the space.

Still bond on the clamping jaw 113 and have crashproof rubber 1134, crashproof rubber 1134 is installed in one side that second clamping bar 1132 is close to first clamping bar 112 and one side that dwang 1131 is close to wireless direction selector 3, namely on the inside wall in space for when wireless direction selector 3 gets into in the space difficult and dwang 1131 and second clamping bar 1132 between bump.

One end that the clamping jaw 113 was kept away from to two first clamping bars 112 all rotates with the same one end of butt pole 111 to be connected and uses butt pole 111 to set up as symmetry axis symmetry, and when butt pole 111 reciprocated, first clamping bar 112 rotated and slided for two first clamping bars 112 keep away from mutually the one end of butt pole 111 or are close to.

Referring to fig. 2, in order to enable the abutting rod 111 to move up and down only along the vertical direction, a second sliding barrel 15 is further fixedly connected to the side wall of the main body 1, the upper end wall and the lower end wall of the second sliding barrel 15 penetrate through the side wall, and the abutting rod 111 is arranged in the second sliding barrel 15 in a penetrating manner to limit the moving direction of the abutting rod 111.

The abutting claw 1111 is fixedly connected to an end of the abutting rod 111 far away from the first clamping rod 112, and the abutting claw 1111 is disposed in an inverted hook shape, so that the wireless direction selector 3 is not easily slipped off when abutting against the abutting claw 1111.

Still fixedly connected with backup pad 16 on the lateral wall of host computer 1, install compression spring 17 on the backup pad 16, compression spring 17's one end butt is on backup pad 16, and compression spring 17's the other end butt is on butt claw 1111 for when wireless direction selector 3 is not the butt on butt claw 1111, compression spring 17 orders about butt claw 1111 and butt pole 111 to shift up and orders about the one end that two first clamping rods 112 kept away from butt pole 111 to keep away from each other. In this embodiment, when the wireless direction selector 3 abuts on the abutting claw 1111, the supporting force of the compression spring 17 is smaller than the gravity of the wireless direction selector 3 to contract and clamp the wireless direction selector 3, and when there is no wireless direction selector 3, the compression spring 17 drives the abutting rod 111 to move upwards to increase the distance between the two rotating rods 1131, thereby facilitating the insertion of the wireless direction selector 3.

In order to make the compression spring 17 not easy to bend in the contraction process, a guide post 18 is fixedly connected to the lower side of the abutting claw 1111, and the guide post 18 is inserted into the compression spring 17 to limit the bending of the compression spring 17.

Referring to fig. 2 and 4, the clamping assembly 11 further comprises a detection module 4, a reference module 5, a comparison module 6 and an indication module 7. The detection module 4 comprises a pressure sensitive resistor RF and a third resistor R3. One end of the piezoresistor RF is connected to the first direct current V1, and the other end is connected in series with the third resistor R3 and then grounded; wherein a detection signal is generated between the piezo-resistor RF and the third resistor R3. The reference module 5 includes a first resistor R1 and a second resistor R2. One end of the first resistor R1 is connected to the second dc power V2, and the other end is connected in series with the second resistor R2 and then grounded. Wherein a reference signal is generated between the first resistor R1 and the second resistor R2. The comparison module 6 includes a comparator N having an in-phase input terminal, an inverted input terminal and an output terminal, the in-phase input terminal is connected to the output terminal of the reference module 5 for receiving the reference signal, the inverted input terminal is connected to the output terminal of the detection module 4 for receiving the detection signal, and the output terminal outputs the comparison signal. The indication module 7 includes a control unit 71 and an indication unit 72. The control unit 71 may be an NPN transistor Q, the indicating unit 72 may be an indicator light LED, a base of the NPN transistor Q is connected to the output end of the comparator N for receiving the comparison signal and emitting the conducting signal, an emitter of the NPN transistor Q is grounded, the third direct current V3 is connected in series with the indicator light LED and the collector, and when the indicator light LED receives the conducting signal, the indicator light LED is energized to emit light. In this embodiment, the indication module 7 is disposed on a PCB and is disposed on the host 1, and the host 1 is provided with an area for mounting the PCB. The detection module 4, the reference module 5 and the comparison module 6 are disposed on another PCB and disposed on the rotating rod 1131, and the rotating rod 1131 is disposed with an area for mounting the PCB to receive the pressure signal.

The indicating device of the embodiment of the application has the technical effects that: the piezoresistor RF outputs a detection signal to a reverse input end of the comparator N after receiving the pressure, the detection signal is compared with a reference signal in a same-direction input end of the comparator N, if the voltage value of the detection signal is larger than the voltage value of the reference signal, the output end of the comparator N outputs a low-level signal, if the voltage value of the detection signal is smaller than the voltage value of the reference signal, the output end of the comparator N outputs a high-level comparison signal, the high-level comparison signal is received by a base electrode of the NPN triode Q, the NPN triode Q is in a conducting state, a circuit connected with the indicator light LED is conducted at the moment, and the indicator light LED emits light.

The implementation principle of the vision testing instrument in the embodiment of the application is as follows: when the wireless direction selector 3 is not used, the wireless direction selector 3 is placed in the clamping assembly 11, the wireless direction selector 3 is abutted on the abutting claw 1111 to drive the abutting claw 1111 to move downwards, the abutting rod 111 connected with the abutting claw 1111 drives the first clamping rod 112 to move and rotate under the guidance of the first sliding barrel 14, so that the two clamping jaws 113 are close to each other to clamp the wireless direction selector 3, and when the rotating rod 1131 is abutted on the wireless direction selector 3, the pressure dependent resistor RF receives pressure, so that the indicator light LED is turned on, thereby prompting that the wireless direction selector 3 is placed completely.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a vision test instrument, includes host computer (1) and the wireless direction selector (3) of being connected with host computer (1), its characterized in that: be provided with clamping component (11) that supply wireless direction selector (3) to place on the lateral wall of host computer (1), clamping component (11) are including butt joint pole (111), two first supporting rod (112) and clamping jaw (113), two first supporting rod (112) rotate respectively and connect on the lateral wall of host computer (1), two the one end of first supporting rod (112) all rotates with the same end of butt joint pole (111) to be connected, two the other end and clamping jaw (113) of first supporting rod (112) are connected, butt joint pole (111)'s other end fixedly connected with supplies butt joint claw (1111) of wireless direction selector (3) butt.

2. A vision testing apparatus as defined in claim 1, wherein: the side wall of the main machine (1) is rotatably connected with two first sliding cylinders (14), and the two first sliding cylinders (14) are sleeved on the first clamping rods (112) in a one-to-one correspondence manner.

3. A vision testing apparatus as defined in claim 2, wherein: first slip section of thick bamboo (14) are close to one side fixedly connected with rotation post (13) of host computer (1), fixedly connected with supplies to rotate post (13) male installation section of thick bamboo (12) on the lateral wall of host computer (1), fixedly connected with joint ring (131) on the circumference lateral wall of rotation post (13), be provided with on the inside wall of installation section of thick bamboo (12) and supply joint ring (131) to inlay annular (121) of establishing the joint.

4. A vision testing apparatus as defined in claim 1, wherein: and a second sliding barrel (15) which is used for the penetration of the abutting rod (111) and slides up and down is fixedly connected to the side wall of the main machine (1).

5. A vision testing apparatus as defined in claim 1, wherein: fixedly connected with backup pad (16) on the lateral wall of host computer (1), be equipped with compression spring (17) on backup pad (16), one end butt that backup pad (16) were kept away from in compression spring (17) is on butt claw (1111).

6. A vision testing apparatus as defined in claim 5, wherein: the abutting claw (1111) is fixedly connected with a guide post (18), and the guide post (18) penetrates through the compression spring (17).

7. A vision testing apparatus as defined in claim 1, wherein: the clamping jaw (113) is rotatably connected to one end, far away from the abutting rod (111), of the first clamping rod (112), and the gravity block (1133) is fixedly connected to the lower side of the clamping jaw (113).

8. A vision testing apparatus as defined in claim 7, wherein: clamping jaw (113) includes dwang (1131) and second clamping rod (1132), dwang (1131) is rotated and is connected on first clamping rod (112), the one end of first clamping rod (112) is kept away from in dwang (1131) second clamping rod (1132) fixed connection, form the space that supplies wireless direction selector (3) to place between first clamping rod (112) and second clamping rod (1132), one side that second clamping rod (1132) are close to first clamping rod (112) is equipped with spigot surface (11321), spigot surface (11321) are located the one end that dwang (1131) was kept away from in second clamping rod (1132).

9. A vision testing apparatus as defined in claim 8, wherein: the clamping assembly (11) further comprises:

the detection module (4) is used for detecting the pressure between the abutting claw (1111) and the wireless direction selector (3) and converting a pressure physical quantity into a pressure detection signal;

a reference module (5) for generating a reference signal to the comparison module (6);

the comparison module (6) is connected with the detection module (4) and the reference module (5) and is used for receiving the detection signal and the reference signal and outputting a comparison signal;

the indicating module (7) is connected with the comparing module (6) and is used for receiving the comparison signal and responding to the comparison signal to realize indication;

10. A vision testing apparatus as defined in claim 9, wherein: the indication module (7) comprises:

the indicating unit (72) is arranged on the host (1) and used for receiving the conducting signal, and when the conducting signal is received, the indicating unit emits light;

and the control unit (71) is connected to the comparison module (6) and used for receiving the comparison signal and outputting a conducting signal when receiving the comparison signal.