A device for occluding the eye during an ophthalmic refraction examination

Abstract

This utility model relates to the field of ophthalmic optometry technology and proposes a shielding device for ophthalmic optometry examination, including a shielding base; a fixing ring movably connected to the front of the shielding base, with a rubber ring fixedly connected to the front of the fixing ring; an mounting assembly mounted on the shielding base; a threaded seat fixedly connected to the bottom end of the shielding base, with a sliding rod provided at the bottom end of the threaded seat, a sliding cylinder slidably connected to the surface of the sliding rod, and a lifting ring fixedly connected to the bottom end of the sliding cylinder; and a positioning assembly mounted on the upper side of one side of the sliding cylinder. Through the slidable sliding rod and sliding cylinder, when not in use, the sliding rod can be slid into the sliding cylinder, and the sliding rod can thread-disassemble the threaded seat, thereby reducing its overall size, facilitating its carrying or storage, and improving its practicality.

Description

Technical Field

[0001] This utility model relates to the field of ophthalmic optometry technology, specifically to a shielding device for ophthalmic optometry examination. Background Technology

[0002] Refraction examination is a common examination method in ophthalmology. By examining the eyes with relevant instruments, conditions such as myopia, hyperopia, astigmatism, and presbyopia can be detected. This helps to determine the true extent of vision changes during the treatment of eye diseases and to analyze the reasons for the decline in vision in the examined eye. During the ophthalmological refraction examination, the examinee usually needs to use tools such as eye shields to cover their eyes for the subsequent examination.

[0003] A search revealed an existing patent (publication number: CN214073251U) that discloses a light-shielding device for ophthalmologists' refraction examinations. The device includes a light-shielding plate, a decorative mirror, and a support rod. A hanging ring is welded to the bottom of the support rod, and the top of the support rod is connected to a connecting seat via a damping shaft. The light-shielding plate is mounted on the top of the connecting seat via screws. Flexible magnifying eye shields are mounted on one side of the light-shielding plate via screws. Shadow cloth is bonded between the flexible magnifying eye shields using polyurethane adhesive. The decorative mirror is embedded in the other side of the light-shielding plate via a limiting groove. This novel light-shielding device for ophthalmologists' refraction examinations is multifunctional, easy to operate, and convenient to manufacture, meeting various needs in use and suitable for widespread application.

[0004] However, in the above solution, the support rod of the grip part is relatively long because it needs to be held by the user, which in turn results in a long overall size and requires a large space, making it difficult to carry or store.

[0005] In view of this, the present invention proposes a shielding device for ophthalmic optometry examination. Utility Model Content

[0006] This invention proposes a shielding device for ophthalmic optometry, which solves the problem of excessive overall length in related technologies.

[0007] The technical solution of this utility model is as follows: A shielding device for ophthalmic optometry includes a shielding base; a fixing ring movably connected to the front of the shielding base, wherein a rubber ring is fixedly connected to the front of the fixing ring; an installation assembly mounted on the shielding base, wherein the installation assembly is used to detach and assemble the shielding base and the fixing ring; a threaded seat fixedly connected to the bottom end of the shielding base, wherein a sliding rod is provided at the bottom end of the threaded seat, a sliding cylinder is slidably connected to the surface of the sliding rod, and a lifting ring is fixedly connected to the bottom end of the sliding cylinder; and a positioning assembly mounted on the upper side of one side of the sliding cylinder, wherein the positioning assembly is used to limit and fix the sliding rod after it is slidably retracted or unfolded.

[0008] The positioning assembly includes: a positioning groove formed on the upper end of one side inside the sliding cylinder, a positioning block movably connected inside the positioning groove, one end of the positioning block extending into the interior of the sliding cylinder, and a pull rod extending to the outside of the sliding cylinder fixedly connected to the other end of the positioning block; a positioning spring wound around the surface of the pull rod, the two ends of the positioning spring being fixedly connected to the inner wall of the positioning groove and one end of the positioning block, respectively; and positioning holes formed on the upper and lower ends of one side of the sliding rod.

[0009] Preferably, the inner wall of the positioning groove is provided with a sliding groove, and the two ends of one side of the positioning block are fixedly connected with sliders that slide in cooperation with the inside of the sliding groove.

[0010] Preferably, one end of the positioning block and the interior of the positioning hole form an engaging structure, and the depth of the interior of the positioning hole is less than the depth of the interior of the positioning groove.

[0011] Preferably, a limiting groove is formed on the other side of the surface of the sliding rod, and a limiting strip is fixedly connected to the inner wall of the sliding cylinder and slides in cooperation with the inside of the limiting groove.

[0012] Preferably, a threaded block is fixedly connected to the top of the sliding rod, and the threaded block and the interior of the threaded seat form a threaded engagement structure.

[0013] Preferably, the mounting assembly includes: slots symmetrically formed on one side of the shielding seat; a bracket fixedly connected to one side of the top of the shielding seat, wherein a fixing bolt is movably connected at the middle position of the top of the bracket; a plate fixedly connected to one side of the top of the fixing ring, wherein the top of the plate has a bolt hole threaded to the bottom of the fixing bolt; and a block symmetrically fixedly connected to one side of the fixing ring.

[0014] Preferably, one end of the card block and the inside of the card slot form an engaging structure, and the card block and the card slot are symmetrically distributed about the vertical central axis of the shielding seat.

[0015] Preferably, the surface of the sliding cylinder is provided with anti-slip patterns at equal intervals, and the anti-slip patterns are O-shaped.

[0016] The beneficial effects of this utility model are as follows:

[0017] 1. In this utility model, the threaded block and the threaded seat are engaged to realize the disassembly and assembly of the sliding rod and the blocking seat. The positioning component is used to make the sliding rod slide open or retract. When the blocking is needed, the sliding rod and the threaded seat are connected by threads, and the sliding rod and the sliding cylinder are slid open. Conversely, the sliding rod is slid into the sliding cylinder, and the sliding rod and the blocking seat are disassembled and assembled. Thus, when not in use, it can be disassembled and stored, reducing its overall volume, making it convenient for users to carry or store, and improving its practicality.

[0018] 2. In this utility model, the engagement between the card block and the card slot, the insertion between the card plate and the card seat, and the threaded engagement between the bottom of the fixing bolt and the bolt hole enable quick assembly and disassembly of the fixing ring and the shielding seat. This facilitates the cleaning, disinfection, or replacement of the rubber ring, allowing different users to clean and disinfect the rubber ring, avoiding cross-infection and improving its practicality. Attached Figure Description

[0019] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0020] Figure 1 This is a front view structural diagram of the present utility model;

[0021] Figure 2 This is a schematic diagram of the rear view structure of this utility model;

[0022] Figure 3 This is a schematic diagram of the overall and partial explosion structure of this utility model;

[0023] Figure 4 This is a schematic diagram of the exploded structure of the shielding seat of this utility model;

[0024] Figure 5 For the present utility model Figure 3 Enlarged structural diagram at point A in the middle;

[0025] Figure 6 For the present utility model Figure 3 Enlarged structural diagram at point B.

[0026] In the diagram: 1. Mounting component; 101. Bolt hole; 102. Clamping plate; 103. Clamping block; 104. Clamping groove; 105. Clamping seat; 106. Fixing bolt; 2. Rubber ring; 3. Sliding rod; 4. Sliding cylinder; 5. Anti-slip texture; 6. Lifting ring; 7. Limiting groove; 8. Covering seat; 9. Positioning component; 901. Positioning hole; 902. Positioning groove; 903. Positioning block; 904. Pull rod; 905. Positioning spring; 906. Slider; 907. Slide groove; 10. Threaded seat; 11. Limiting strip; 12. Fixing ring; 13. Threaded block. Detailed Implementation

[0027] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this utility model.

[0028] Example 1

[0029] A preferred embodiment of the ophthalmic optometry shielding device provided by this utility model is, for example... Figures 1 to 6 As shown: An ophthalmic optometry examination shielding device includes a shielding base 8; a fixing ring 12 movably connected to the front of the shielding base 8, with a rubber ring 2 fixedly connected to the front of the fixing ring 12; an installation component 1 assembled on the shielding base 8, which is used to detach and assemble the shielding base 8 and the fixing ring 12; a threaded seat 10 fixedly connected to the bottom end of the shielding base 8, with a sliding rod 3 provided at the bottom end of the threaded seat 10, a sliding cylinder 4 slidably connected to the surface of the sliding rod 3, and a hanging ring 6 fixedly connected to the bottom end of the sliding cylinder 4; and a positioning component 9 assembled on the upper side of one side of the sliding cylinder 4, which is used to limit and fix the sliding rod 3 after sliding and retracting or unfolding.

[0030] The positioning component 9 includes: a positioning groove 902 formed on the upper end of one side inside the sliding cylinder 4; a positioning block 903 movably connected inside the positioning groove 902; one end of the positioning block 903 extending into the interior of the sliding cylinder 4; and a pull rod 904 extending to the outside of the sliding cylinder 4 fixedly connected to the other end of the positioning block 903; a positioning spring 905 wound around the surface of the pull rod 904; and two ends of the positioning spring 905 fixedly connected to the inner wall of the positioning groove 902 and one end of the positioning block 903, respectively; and positioning holes 901 formed on the upper and lower ends of one side of the sliding rod 3.

[0031] In this embodiment, when needed, the threaded block 13 and the threaded seat 10 are used to install the sliding rod 3 and the threaded seat 10. Then, the blocking seat 8 is pulled to make the sliding rod 3 slide out. After that, the positioning block 903 is slidably locked into another positioning hole 901 by the elastic force of the positioning spring 905, so as to limit and fix the sliding rod 3 after it slides out, which is convenient for normal use of the anti-slip texture 5. When not in use, the above operations are reversed to reduce its overall size and make it easy to carry or store.

[0032] In a further preferred embodiment of the present invention, a sliding groove 907 is provided on the inner wall of the positioning groove 902, and two ends of one side of the positioning block 903 are fixedly connected to sliders 906 that slide and cooperate with the inside of the sliding groove 907.

[0033] In this embodiment, the smoothness of the back-and-forth sliding of the positioning block 903 is improved by utilizing the sliding between the slider 906 and the inside of the groove 907.

[0034] In a further preferred embodiment of the present invention, one end of the positioning block 903 and the interior of the positioning hole 901 form an engaging structure, and the depth inside the positioning hole 901 is less than the depth inside the positioning groove 902.

[0035] In this embodiment, the positioning block 903 engages with the positioning hole 901 at one end to achieve the limiting and fixing of the sliding rod 3 after it slides up and down.

[0036] In a further preferred embodiment of the present invention, a limiting groove 7 is provided on the other side of the surface of the sliding rod 3, and a limiting strip 11 that slides and cooperates with the inside of the limiting groove 7 is fixedly connected to the inner wall of the sliding cylinder 4.

[0037] In this embodiment, the sliding of the limiting strip 11 and the inside of the limiting groove 7 is used to improve the smoothness of the sliding rod 3 sliding up and down.

[0038] In a further preferred embodiment of the present invention, a threaded block 13 is fixedly connected to the top of the sliding rod 3, and the threaded block 13 and the interior of the threaded seat 10 form a threaded engagement structure.

[0039] In this embodiment, the sliding rod 3 and the shielding seat 8 are disassembled and assembled by using the threaded block 13 and the threaded seat 10.

[0040] Example 2

[0041] Based on Embodiment 1, a preferred embodiment of the ophthalmic optometry shielding device provided by this utility model is, for example... Figures 1 to 6 As shown: the mounting component 1 includes: a slot 104 symmetrically opened on one side of the shielding seat 8; a seat 105 fixedly connected to one side of the top of the shielding seat 8, with a fixing bolt 106 movably connected at the middle position of the top of the seat 105; a plate 102 fixedly connected to one side of the top of the fixing ring 12, with a bolt hole 101 at the top of the plate 102 that is threaded to the bottom of the fixing bolt 106; and a block 103 symmetrically fixedly connected to one side of the fixing ring 12.

[0042] In this embodiment, by loosening the fixing bolt 106 until it is completely disengaged from the bolt hole 101, and then pinching the rubber ring 2 and the fixing ring 12, the locking block 103 is completely disengaged from the slot 104, thereby disassembling the rubber ring 2. This facilitates the cleaning, disinfection, or replacement of the rubber ring 2 and avoids cross-infection when used by different users.

[0043] In a further preferred embodiment of the present invention, one end of the card block 103 and the interior of the card slot 104 form an engaging structure, and the card block 103 and the card slot 104 are symmetrically distributed about the vertical central axis of the shielding seat 8.

[0044] In this embodiment, the engagement between the locking block 103 and the slot 104 is used to improve the initial engagement strength between the fixing ring 12 and the shielding seat 8.

[0045] In a further preferred embodiment of this utility model, anti-slip textures 5 are evenly spaced on the surface of the sliding cylinder 4, and the anti-slip textures 5 are O-shaped.

[0046] In this embodiment, the O-shaped anti-slip texture 5 is used to improve the grip stability of the user's hand on the surface of the sliding cylinder 4.

[0047] The working principle of this utility model is as follows: First, when needed, the threaded engagement between the threaded block 13 and the threaded seat 10 is used to install the sliding rod 3 and the threaded seat 10. Then, the pull rod 904 is pulled to drive the positioning block 903 to slide and compress the positioning spring 905 until it is completely disengaged from one of the positioning holes 901. After that, the blocking seat 8 is pulled to allow the sliding rod 3 to slide and unfold inside the sliding cylinder 4. Then, the pull rod 904 is released, and the elastic force of the positioning spring 905 is used to allow the positioning block 903 to slide and lock into the other positioning hole 901, thereby limiting and fixing the sliding rod 3 after it has slid and unfolded.

[0048] The user then holds the sliding cylinder 4 with their hand and uses the O-shaped anti-slip texture 5 to improve the grip stability between the user's hand and the surface of the sliding cylinder 4. Then, the rubber ring 2 is attached to one of the user's eyes to achieve the blocking action, which facilitates the subsequent optometry operation.

[0049] Meanwhile, when not in use, the above operations can be reversed to slide the sliding rod 3 into the sliding cylinder 4 and then remove the sliding rod 3 from the cover 8, thereby reducing its overall size and making it easier to carry or store.

[0050] Furthermore, by loosening the fixing bolt 106 until it is completely disengaged from the bolt hole 101, and then pinching the rubber ring 2 and the fixing ring 12, the locking block 103 is completely disengaged from the slot 104, thus disassembling the rubber ring 2. This facilitates the cleaning, disinfection, or replacement of the rubber ring 2 and avoids cross-infection between different users. During reinstallation, the locking block 103 is inserted into the slot 104, and the locking plate 102 is inserted into the seat 105. Then, the fixing bolt 106 is tightened so that one end is screwed into the bolt hole 101, thus achieving a secure installation between the fixing ring 12 and the shielding seat 8.

[0051] Those skilled in the art should connect all electrical components and their compatible power supplies in this case via wires, and should select appropriate controllers according to actual conditions to meet control requirements. The specific connection and control sequence should refer to the working principle described above, and the electrical connection should be completed by referring to the working sequence of each electrical component. The detailed connection methods are well-known technologies in the field. The above mainly introduces the working principle and process, and will not describe the electrical control.

[0052] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A shielding device for ophthalmic refraction examination, characterized in that, include: shielding seat (8); A fixing ring (12) is movably connected to the front of the shield (8), and a rubber ring (2) is fixedly connected to the front of the fixing ring (12); A mounting assembly (1) is assembled on the shielding seat (8), the mounting assembly (1) being used to assemble and disassemble the shielding seat (8) and the fixing ring (12); A threaded seat (10) is fixedly connected to the bottom end of the shielding seat (8). A sliding rod (3) is provided at the bottom end of the threaded seat (10). A sliding cylinder (4) is slidably connected to the surface of the sliding rod (3). A lifting ring (6) is fixedly connected to the bottom end of the sliding cylinder (4). The positioning component (9) is mounted on the upper side of the sliding cylinder (4). The positioning component (9) is used to limit and fix the sliding rod (3) after it is slidably stored or unfolded. The positioning component (9) includes: A positioning groove (902) is formed on the upper side of the inner side of the sliding cylinder (4). A positioning block (903) is movably connected inside the positioning groove (902). One end of the positioning block (903) extends into the inner side of the sliding cylinder (4), and the other end of the positioning block (903) is fixedly connected to a pull rod (904) extending into the outer side of the sliding cylinder (4). A positioning spring (905) is wound around the surface of the pull rod (904), and the two ends of the positioning spring (905) are fixedly connected to the inner wall of the positioning groove (902) and one end of the positioning block (903), respectively. Positioning holes (901) are formed at the upper and lower ends of one side of the sliding rod (3).

2. The ophthalmic optometry shielding device according to claim 1, characterized in that, The inner wall of the positioning groove (902) is provided with a sliding groove (907), and the two ends of one side of the positioning block (903) are fixedly connected with sliders (906) that slide in cooperation with the inside of the sliding groove (907).

3. The ophthalmic optometry shielding device according to claim 1, characterized in that, One end of the positioning block (903) forms an engaging structure with the interior of the positioning hole (901), and the depth inside the positioning hole (901) is less than the depth inside the positioning groove (902).

4. The ophthalmic optometry shielding device according to claim 1, characterized in that, A limiting groove (7) is provided on the other side of the surface of the sliding rod (3), and a limiting strip (11) is fixedly connected to the inner wall of the sliding cylinder (4) and slides in cooperation with the inside of the limiting groove (7).

5. The ophthalmic optometry shielding device according to claim 1, characterized in that, The top end of the sliding rod (3) is fixedly connected to a threaded block (13), and the threaded block (13) and the interior of the threaded seat (10) form a threaded engagement structure.

6. The ophthalmic optometry shielding device according to claim 1, characterized in that, The installation component (1) includes: A slot (104) is symmetrically opened on one side of the shield (8); A card holder (105) is fixedly connected to one side of the top of the shielding seat (8), and a fixing bolt (106) is movably connected at the middle position of the top of the card holder (105). A clamping plate (102) is fixedly connected to one side of the top end of the fixing ring (12). The top end of the clamping plate (102) is provided with a bolt hole (101) that is threaded to the bottom end of the fixing bolt (106). A locking block (103) is symmetrically fixed to one side of the fixing ring (12).

7. The ophthalmic optometry shielding device according to claim 6, characterized in that, One end of the card block (103) and the inside of the card slot (104) form an engaging structure. The card block (103) and the card slot (104) are symmetrically distributed about the vertical central axis of the shielding seat (8).

8. The ophthalmic optometry shielding device according to claim 1, characterized in that, The surface of the sliding cylinder (4) is provided with anti-slip textures (5) at equal intervals, and the anti-slip textures (5) are O-shaped.

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