Head supporting and limiting device for eye examination

Abstract

The invention discloses a head supporting and limiting device for eye examination, and belongs to the field of eye examination, the head supporting and limiting device comprises a stabilizing assembly, a moving mechanism and a positioning assembly, the stabilizing assembly comprises a bearing assembly, and the upper end of the bearing assembly is rotatably connected with a limiting assembly; a bearing assembly in the stabilizing assembly is matched with a limiting assembly, so that the body of a patient can be subjected to omnibearing limiting operation, and the safety in the eye examination process of the patient is guaranteed; meanwhile, a supporting assembly in the moving mechanism is matched with a transmission assembly and a fastening assembly, so that the height and the position of a positioning assembly can be adjusted to support and limit patients with different heights and body types, and then the universality of the supporting and limiting device can be enhanced; and finally, the head of the patient can be supported and limited in all directions through an erecting assembly, a first positioning mechanism, a second positioning mechanism and a third positioning mechanism in the positioning assembly, so that the practicability of the supporting and limiting device can be enhanced.

Description

Technical Field

[0001] The present invention relates to the field of eye examinations, and specifically provides a head support and limiting device for eye examinations. Background Art

[0002] When performing eye examinations, a slit lamp microscope is mostly used. Most problems in the front part of the eye can be detected through this instrument. To ensure safety during the examination, it is necessary to support and limit the patient's head, and thus a support and limiting device is required. Among them, the "special support device for ophthalmic examinations in medical use" disclosed in the patent publication number "CN 113712497 B" is also an increasingly mature technology. It "provides a special support device for ophthalmic examinations in medical use with reasonable and reliable structure, convenient adjustment, and support function. It uses a support plate to support the patient for ophthalmic examinations, and has a height adjustment function, which can be used by patients of different heights, enabling patients to maintain a good sitting posture during the examination. At the same time, it has a buffering performance at the support part, improving comfort, and can achieve air circulation, improving the air quality and temperature around the device, and enhancing the comfort of patients during the examination. During use, it can also limit the patient's head, avoiding the problem of inaccurate eye alignment during the examination, facilitating the effective examination by doctors, being suitable for use during examinations of patients with abnormal movements and children. At the same time, it has an adjustment function for examination equipment, which can adjust the position and height of the examination equipment, improving the examination efficiency. During the examination, soft light irradiation is used, which is convenient for doctors to observe and improves the examination efficiency." However, during the use of this support device, there are still the following defects: Although the support device can ensure that the patient maintains a good sitting posture through the set support plate, the above structure has an insufficient body limiting effect on the patient. Based on this, it is necessary to provide a support and limiting device that can ensure sitting posture safety. In addition, although the support device can perform head limiting operations on the patient, the head limiting effect achieved only through the above components is not significant enough.

[0003] Based on this, it is necessary to provide a support and limiting device that can improve the limiting strength and thus enhance the practicality. In addition, this support device is not convenient for performing limiting operations on patients of different heights and body types. Based on this, it is necessary to provide a support and limiting device that is convenient for limiting the heads of patients of different heights and body types and enhances the versatility. Summary of the Invention

[0004] The embodiment of the present invention provides a head support and limiting device for eye examinations, aiming to solve the problem that the existing support and limiting device is not convenient for comprehensively supporting and limiting the bodies and heads of patients of different body types and heights.

[0005] To achieve the above-mentioned purpose, the present invention provides a head support and limiting device for eye examination, comprising a stabilizing component, a moving mechanism and a positioning component; Wherein, a stabilizing component, the stabilizing component comprises a receiving component, the upper end of the receiving component is rotatably connected to the limiting component; A moving mechanism, the moving mechanism comprising a supporting assembly mounted on the upper end of the receiving assembly, a transmission assembly mounted on the lower end of the supporting assembly, and a fastening assembly detachably mounted inside the transmission assembly; The positioning assembly comprises a mounting assembly installed inside the supporting assembly, the side surfaces of the mounting assembly are respectively slidably connected with a first positioning mechanism and a second positioning mechanism, and the upper end of the mounting assembly is detachably mounted with a third positioning mechanism.

[0006] As a preferred solution of the present invention, the receiving assembly includes a bracket, the lower end of the bracket is fixedly connected to a cross frame, and the upper end of the bracket is respectively fixedly connected to a table top and a seat board.

[0007] As a preferred solution of the present invention, the limiting assembly includes two guardrails rotatably connected to the upper ends of the seat plate, two guard nets are arranged inside the two guardrails, positioning rods are inserted into two of the guardrails of the two guardrails, lifting grooves are provided on the side surfaces of the two guardrails, and a toggle rod is fixedly connected to the side surface of the positioning rod.

[0008] As a preferred solution of the present invention, sliding grooves are provided on both sides of the table top, two mounting plates are fixedly connected to the lower end of the table top, two rotating holes and four positioning holes are respectively provided at the upper end of the seat plate, the lower ends of the two guardrails are rotatably connected to the inside of the rotating hole, and the positioning rod is inserted into the inside of the positioning hole.

[0009] As a preferred solution of the present invention, the supporting assembly includes two support rods installed on both sides of the upper end of the table top, the inner walls of the upper ends of the two support rods are fixedly connected with screw tubes, the internal threads of the screw tubes are connected with tightening bolts, the upper ends of the two support rods are provided with plug-in holes, the two sides of the two support rods are provided with fastening holes, the inner walls of the two support rods are fixedly connected with sliders, the sliders are slidably connected to the inside of the slide groove, and the opposite surfaces of the two support rods are provided with connecting grooves.

[0010] As a preferred solution of the present invention, the transmission assembly includes a screw rod and a guide rod respectively installed inside two support rods, one end of the screw rod is fixedly connected to a first synchronous pulley, a servo motor is installed at the lower end of the table top, the output end of the servo motor is connected to a second synchronous pulley, and a synchronous belt is connected between the first synchronous pulley and the second synchronous pulley.

[0011] As a preferred embodiment of the present invention, the fastening assembly includes a connecting rod installed between two support rods. Both ends of the connecting rod are fixedly connected with connecting blocks, and the connecting blocks are inserted into the interior of the connecting grooves. A grip is connected between the two support rods. Both ends of the grip are fixedly connected with connecting bolts. Threaded rods are threadedly connected to the side surfaces of the two connecting bolts. Connecting screw holes are formed on the opposite surfaces of the two threaded rods. The connecting bolts are threadedly connected into the screw holes, and the threaded rods are inserted into the fastening holes.

[0012] As a preferred embodiment of the present invention, the erection assembly includes a support rod inserted into the insertion holes at the upper ends of two support rods. Two grips are sleeved on the lower end of the support rod, and a screw ring is fixedly connected to the upper end of the support rod.

[0013] As a preferred embodiment of the present invention, the first positioning mechanism includes a supporting plate sleeved on the side surface of the support rod. An arc-shaped groove is formed at the upper end of the supporting plate, and a supporting pad is installed inside the arc-shaped groove.

[0014] As a preferred embodiment of the present invention, the second positioning mechanism includes two lifting tubes sleeved on the side surface of the support rod. A forehead limiting piece is fixedly connected between the two lifting tubes. A first limiting belt and a second limiting belt are respectively connected to the side surface of the forehead limiting piece. Hook-and-loop fasteners are respectively arranged on the inner wall of the first limiting belt and the side surface of the second limiting belt.

[0015] As a preferred embodiment of the present invention, the third positioning mechanism includes a top limiting cover. Side plates are fixedly connected to both sides of the top limiting cover. A guiding hole is formed at the upper end of the side plate, and the support rod is inserted into the guiding hole. A fixing ring is fixedly connected to the upper end of the top limiting cover. A bearing is installed inside the fixing ring. A lifting bolt is inserted into the bearing. A rotating handle is fixedly connected to the upper end of the lifting bolt. A plurality of limiting strips are fixedly connected to the inner wall of the bearing. A plurality of strip-shaped grooves are formed on the lower end side surface of the lifting bolt. All the limiting strips are clamped into the strip-shaped grooves, and the lifting bolt is threadedly connected into the screw ring.

[0016] Compared with the prior art, the beneficial effects of the present invention are: 1. When in use, first control the two guardrails to rotate 90° around the rotating hole as the center, so as to control the two guardrails to open, then guide the patient to sit on the upper end of the seat board, and then only control the two guardrails to rotate and close, and then control the toggle rod to bring the positioning rod down and plug it into the positioning hole to install and position the guardrails and the seat board. At this time, the two guardrails cooperate with the protective net to limit the patient. Compared with the support and limit device in the prior art "a special support device for medical ophthalmic examination", the present invention can significantly improve the patient's sitting stability through the above-mentioned structure cooperation, thereby improving the safety of use; 2. When supporting and limiting the patient's head, the patient first sits on the upper end of the seat board, and the patient's head is located inside the frame rod. At this time, the patient's chin can be supported by the support board and the soft support pad at the upper end thereof. At the same time, the patient's forehead fits the forehead limiting piece with an arc-shaped structure, and the patient's head can be initially limited by the forehead limiting piece. At the same time, the first limiting belt and the second limiting belt are passed around the patient's head, and the thorn Velcro and the fur Velcro are bonded to each other. The forehead limiting piece cooperates with the first limiting belt and the second limiting belt to significantly improve the support and limiting operation of the patient's head. At the same time, the top limiting cover can be controlled to limit the patient's head from the top by rotating the handle with the lifting bolt and rotating it clockwise along the screw ring. Compared with the support and limiting device in the prior art "a special support device for medical ophthalmic examination", the present invention can facilitate multiple support and limiting operations on the patient's head through the cooperation of the above structures, thereby enhancing the practicality of the support and limiting device. 3. In supporting and limiting the heads of patients of different heights and body shapes, firstly, the supporting plate is controlled to be lifted and lowered along the frame rod, and at the same time, the lifting tube is controlled to be lifted and lowered along the frame rod, so that it can be used for patients of different heights. At the same time, the lifting bolt is controlled to be lifted and lowered along the screw ring to adjust the height of the top limit cover, so that it is suitable for patients of different heights and body shapes. Finally, the servo motor is started to rotate the second synchronous pulley, and the synchronous belt can rotate the first synchronous pulley and the lead screw, and the guide rod can be controlled to reciprocate along the lead screw and the guide rod respectively, so as to adjust the position of the positioning assembly at the upper end of the table top, so as to facilitate the use of patients of different heights and body shapes. Compared with the support and limiting device in the prior art "a special support device for medical ophthalmic examination", the present invention can facilitate the support and limiting operation of the heads of patients of different heights and body shapes through the cooperation of the above-mentioned structures, thereby enhancing the versatility of the support and limiting device. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the structure of the stabilizing assembly of the present invention; Figure 3 It is a schematic diagram of the structure of the receiving component of the present invention; Figure 4 It is a bottom view of the receiving component structure of the present invention; Figure 5 This is a disassembled diagram of the limit assembly structure of the present invention; Figure 6 It is a schematic diagram of the structure of the mobile mechanism of the present invention; Figure 7 This is a disassembled diagram of the support assembly structure of the present invention; Figure 8 This is a disassembled diagram of the transmission assembly structure of the present invention; Figure 9 This is a disassembled diagram of the fastening assembly structure of the present invention; Figure 10 This is a schematic diagram of the structure of the positioning component of the present invention; Figure 11 This is a disassembled diagram of the assembly structure of the present invention; Figure 12 This is a disassembled diagram of the second positioning mechanism structure of the present invention; Figure 13 This is a disassembled view of the third positioning mechanism structure of the present invention.

[0018] In the figure: 100, stabilizing component; 101, receiving component; 102, limiting component; 1011, bracket; 1012, cross frame; 1013, table board; 1014, seat board; 1021, guardrail; 1022, guard net; 1023, positioning rod; 1024, lifting slot; 1025, toggle rod; 10111, slide slot; 10112, mounting plate; 10113, rotating hole; 10114, positioning hole; 200, moving Mechanism; 201, support assembly; 202, transmission assembly; 203, fastening assembly; 2011, support rod; 2012, screw tube; 2013, tightening bolt; 2014, plug hole; 2015, fastening hole; 2016, slider; 2017, connecting groove; 2021, lead screw; 2022, guide rod; 2023, first synchronous pulley; 2024, servo motor; 2025, second synchronous pulley; 2026, synchronous belt; 2031, connecting rod; 2032, connecting block; 2033, handle; 2034, connecting bolt; 2035, fastening rod; 2036, connecting screw hole; 300, positioning assembly; 301, erection assembly; 302, first positioning mechanism; 303, second positioning mechanism; 304, third positioning mechanism; 3011, erection rod; 3012, handle; 3013, screw ring; 3021, support plate; 3022, arc groove; 30 23. Support pad; 3031. Lifting tube; 3032. Forehead limiting plate; 3033. First limiting belt; 3034. Second limiting belt; 3035. Thorn Velcro; 3036. Fur Velcro; 3041. Top limiting cover; 3042. Side plate; 3043. Guide hole; 3044. Fixing ring; 3045. Bearing; 3046. Lifting bolt; 3047. Turning handle; 3048. Limiting strip; 3049. Strip groove. DETAILED DESCRIPTION

[0019] 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.

[0020] See also Figures 1-13 , the present invention provides a head support and limiting device for eye examination, comprising a stabilizing component 100, a moving mechanism 200 and a positioning component 300; The stabilizing component 100 includes a receiving component 101, and the upper end of the receiving component 101 is transmission-connected to a limiting component 102; The moving mechanism 200 includes a supporting assembly 201 installed on the upper end of the receiving assembly 101, a transmission assembly 202 is installed on the lower end of the supporting assembly 201, and a fastening assembly 203 is detachably installed inside the transmission assembly 202; The positioning assembly 300 includes a mounting assembly 301 installed inside the supporting assembly 201, the side surfaces of the mounting assembly 301 are respectively slidably connected with a first positioning mechanism 302 and a second positioning mechanism 303, and the upper end of the mounting assembly 301 is detachably mounted with a third positioning mechanism 304.

[0021] In a specific embodiment, the receiving component 101 in the stabilizing component 100 cooperates with the limiting component 102 to perform all-round limiting operations on the patient's body, thereby ensuring the safety of the patient during eye examination. At the same time, the supporting component 201 in the moving mechanism 200 cooperates with the transmission component 202 and the fastening component 203 to adjust the height and position of the positioning component 300 so as to facilitate the support and limiting operations on patients of different heights and body shapes, thereby enhancing the versatility of the support and limiting device. Finally, the erection component 301, the first positioning mechanism 302, the second positioning mechanism 303 and the third positioning mechanism 304 in the positioning component 300 can perform all-round supporting and limiting operations on the patient's head, thereby enhancing the practicality of the support and limiting device.

[0022] See also Figure 2 - Figure 4 The receiving assembly 101 includes a bracket 1011, a cross frame 1012 is fixedly connected to the lower end of the bracket 1011, and a table top 1013 and a seat board 1014 are fixedly connected to the upper end of the bracket 1011.

[0023] In a specific embodiment, the horizontal frame 1012 cooperates with the bracket 1011, the table top 1013 and the seat board 1014 to provide support for the patient's body to maintain a sitting position, thereby improving the comfort during the eye examination.

[0024] See also Figure 2 - Figure 5 The limiting assembly 102 includes two guardrails 1021 rotatably connected to the upper end of the seat plate 1014, two guard nets 1022 are arranged inside the two guardrails 1021, two guard bars of the two guardrails 1021 are inserted with positioning rods 1023, and the side surfaces of the two guard bars are provided with lifting grooves 1024, and the side surface of the positioning rod 1023 is fixedly connected with a toggle rod 1025.

[0025] In a specific embodiment, the guardrail 1021 and the guard net 1022 can cooperate to perform an all-round limiting and protecting operation on the patient's body. At the same time, the positioning rod 1023 can improve the installation stability of the guardrail 1021 and the seat board 1014, and assist in ensuring the limiting effect of the support and limiting device on the patient's body.

[0026] Please refer to Figure 2 - Figure 4 , sliding grooves 10111 are provided on both sides of the table board 1013. Two mounting plates 10112 are fixedly connected to the lower end of the table board 1013. Two rotation holes 10113 and four positioning holes 10114 are respectively provided at the upper end of the seat board 1014. The lower ends of the two guardrails 1021 are rotatably connected inside the rotation holes 10113, and the positioning rod 1023 is inserted inside the positioning holes 10114.

[0027] In a specific embodiment, inserting the positioning rod 1023 inside the positioning hole 10114 can position the guardrail 1021. The rotation hole 10113 facilitates the rotational connection of the guardrail 1021, so as to control the rotational opening and closing of the guardrail 1021.

[0028] Please refer to Figure 7 , the support assembly 201 includes two support rods 2011 installed on both sides of the upper end of the table board 1013. The inner walls of the upper ends of the two support rods 2011 are fixedly connected with screw pipes 2012. A tightening bolt 2013 is threadedly connected inside the screw pipe 2012. Insertion holes 2014 are provided at the upper ends of the two support rods 2011. Fastening holes 2015 are provided on both sides of the two support rods 2011. Sliders 2016 are fixedly connected to the inner walls of the two support rods 2011. The sliders 2016 are slidably connected inside the sliding grooves 10111. Connecting grooves 2017 are provided on the opposite surfaces of the two support rods 2011.

[0029] In a specific embodiment, by controlling the threaded connection of the tightening bolt 2013 inside the screw pipe 2012, the support rod 3011 can be tightly fixed, improving the installation stability and disassembly convenience of the support rod 3011. By controlling the sliding connection of the slider 2016 inside the sliding groove 10111, the smoothness and stability of the movement of the support rod 2011 can be improved.

[0030] Please refer to Figure 8 , the transmission assembly 202 includes a lead screw 2021 and a guide rod 2022 respectively installed inside the two support rods 2011. One end of the lead screw 2021 is fixedly connected with a first synchronous pulley 2023. A servo motor 2024 is installed at the lower end of the table board 1013. The output end of the servo motor 2024 is connected with a second synchronous pulley 2025. A synchronous belt 2026 is connected between the first synchronous pulley 2023 and the second synchronous pulley 2025.

[0031] In a specific embodiment, the servo motor 2024 is started to drive the second synchronous pulley 2025 to rotate. In cooperation with the synchronous belt 2026, the first synchronous pulley 2023 and the lead screw 2021 on its surface can be driven to rotate. In cooperation with the guide rod 2022, the two support rods 2011 can be controlled to reciprocate along the lead screw 2021 and the guide rod 2022 respectively, so as to adjust the position of the positioning assembly 300, so as to be used by patients of different heights and body types.

[0032] Please refer to Figure 7 and Figure 9 , the fastening assembly 203 includes a connecting rod 2031 installed between the two support rods 2011. Connecting blocks 2032 are fixedly connected to both ends of the connecting rod 2031. The connecting blocks 2032 are inserted into the connecting grooves 2017. A grip 2033 is connected between the two support rods 2011. Connecting bolts 2034 are fixedly connected to both ends of the grip 2033. Fastening rods 2035 are threadedly connected to the side surfaces of the two connecting bolts 2034. Connecting screw holes 2036 are formed on the opposite surfaces of the two fastening rods 2035. The connecting bolts 2034 are threadedly connected into the connecting screw holes 2036. The fastening rods 2035 are inserted into the fastening holes 2015.

[0033] In a specific embodiment, by inserting the connecting block 2032 into the connecting groove 2017 and cooperating with the connecting rod 2031, the connection strength between the two support rods 2011 can be initially improved. At the same time, by turning the grip 2033 to drive the connecting bolt 2034 to rotate and cooperating with the two fastening rods 2035, the connection strength between the two support rods 2011 can be enhanced.

[0034] Please refer to Figure 11 , the erection assembly 301 includes a rack bar 3011 inserted into the insertion holes 2014 at the upper ends of the two support rods 2011. Two handle grips 3012 are sleeved on the lower end of the rack bar 3011. A screw ring 3013 is fixedly connected to the upper end of the rack bar 3011.

[0035] In a specific embodiment, the rack bar 3011 is convenient for slidingly installing the first positioning mechanism 302, the second positioning mechanism 303 and the third positioning mechanism 304. The handle grips 3012 are convenient for patients to hold, ensuring the stability of the body during the eye examination process.

[0036] Please refer to Figure 11 , the first positioning mechanism 302 includes a supporting plate 3021 sleeved on the side surface of the rack bar 3011. An arc-shaped groove 3022 is formed at the upper end of the supporting plate 3021. A supporting pad 3023 is installed in the arc-shaped groove 3022.

[0037] In a specific embodiment, the supporting plate 3021 and the soft supporting pad 3023 can support the patient's chin, reducing the fatigue of the patient's head.

[0038] Please refer to Figure 12 Figure 12 , the second positioning mechanism 303 includes two lifting tubes 3031 sleeved on the side surface of the frame rod 3011. An forehead limiting piece 3032 is fixedly connected between the two lifting tubes 3031. A first limiting belt 3033 and a second limiting belt 3034 are respectively connected to the side surface of the forehead limiting piece 3032. Thorn magic tapes 3035 and fluff magic tapes 3036 are respectively arranged on the inner wall of the first limiting belt 3033 and the side surface of the second limiting belt 3034.

[0039] In a specific embodiment, by controlling the lifting tube 3031 to lift along the frame rod 3011, the height of the forehead limiting piece 3032 can be adjusted. The forehead limiting piece 3032 can preliminarily limit the head of the patient. At the same time, the first limiting belt 3033 and the second limiting belt 3034 are wound around the head of the patient, and the thorn magic tape 3035 and the fluff magic tape 3036 are adhered to each other to further limit the head of the patient, improving the support and limiting stability.

[0040] Please refer to Figure 13 Figure 13 , the third positioning mechanism 304 includes a top limiting cover 3041. Side plates 3042 are fixedly connected to both sides of the top limiting cover 3041. A guiding hole 3043 is opened at the upper end of the side plate 3042. The frame rod 3011 is inserted into the guiding hole 3043. A fixing ring 3044 is fixedly connected to the upper end of the top limiting cover 3041. A bearing 3045 is installed inside the fixing ring 3044. A lifting bolt 3046 is inserted into the bearing 3045. A rotating handle 3047 is fixedly connected to the upper end of the lifting bolt 3046. A number of limiting strips 3048 are fixedly connected to the inner wall of the bearing 3045. A number of strip-shaped grooves 3049 are opened on the lower end side surface of the lifting bolt 3046. All the limiting strips 3048 are clamped inside the strip-shaped grooves 3049. The lifting bolt 3046 is threadedly connected to the inside of the screw ring 3013.

[0041] In a specific embodiment, by controlling the lifting bolt 3046 to rotate and lift along the screw ring 3013, the height of the top limiting cover 3041 can be adjusted. At the same time, the side plate 3042 lifting along the frame rod 3011 can improve the lifting stability of the top limiting cover 3041. At this time, the top limiting cover 3041 can limit the head of the patient. The presence of the bearing 3045 can prevent the top limiting cover 3041 from rotating when the lifting bolt 3046 rotates, further improving the support and limiting stability of the top limiting cover 3041 to the head of the patient.

[0042] Working principle: The receiving component 101 in the stable component 100 cooperates with the limiting component 102 to perform a full-range limiting operation on the patient's body, thus ensuring the safety during the patient's eye examination. Subsequently, the support component 201 in the moving mechanism 200 cooperates with the transmission component 202 and the fastening component 203 to adjust the height and position of the positioning component 300, and then can perform a support and limiting operation on patients of different heights and body types, so as to enhance the versatility of the support and limiting device. Finally, the erection component 301, the first positioning mechanism 302, the second positioning mechanism 303, and the third positioning mechanism 304 in the positioning component 300 can perform a full-range support and limiting operation on the patient's head, so the practicability of the support and limiting device can be enhanced. When in use, first control the two guardrails 1021 to rotate 90° around the rotation hole 10113 to open the two guardrails 1021. Then guide the patient to sit on the upper end of the seat board 1014, and then control the two guardrails 1021 to rotate and close, and control the toggle lever 1025 to drive the positioning rod 1023 to descend and insert into the positioning hole 10114, so as to install and position the guardrails 1021 and the seat board 1014. The two guardrails 1021 cooperate with the guard net 1022 to limit and protect the patient. When supporting and limiting the heads of patients of different heights and body types, first control the supporting plate 3021 to lift and lower along the support rod 3011, and at the same time control the lifting pipe 3031 to lift and lower along the support rod 3011 for patients of different heights to use. Then control the lifting bolt 3046 to lift and lower along the screw ring 3013, so as to adjust the height of the top limiting cover 3041, thus facilitating the use of patients of different heights and body types. Finally, start the servo motor 2024 to drive the second synchronous pulley 2025 to rotate, and cooperate with the synchronous belt 2026 to drive the first synchronous pulley 2023 to rotate, so as to drive the lead screw 2021 to rotate, and cooperate with the guide rod 2022 to control the two support rods 2011 to reciprocate along the lead screw 2021 and the guide rod 2022 respectively, and then can adjust the position of the positioning component 300 on the upper end of the table board 1013, so as to facilitate the use of patients of different heights and body types. When supporting and limiting the patient's head, first guide the patient to sit on the upper end of the seat board 1014. At this time, the patient's head is inside the support rod 3011. The supporting plate 3021 and the soft supporting pad 3023 on its upper end can support the patient's chin. At this time, the patient's forehead fits against the arc-shaped forehead limiting piece 3032. The forehead limiting piece 3032 can perform a preliminary limit on the patient's head. Then bypass the first limiting belt 3033 and the second limiting belt 3034 around the patient's head, and then bond the thorn magic tape 3035 and the hair magic tape 3036 to each other. The forehead limiting piece 3032 cooperates with the first limiting belt 3033 and the second limiting belt 3034 to significantly improve the support and limiting strength of the patient's head. Finally, turn the turning handle 3047 to drive the lifting bolt 3046 to rotate clockwise and descend along the screw ring 3013,Thus, it is possible to control the top limit cover 3041 to limit the patient's head from the top, and then it is possible to perform an all-round support and limit operation on the patient's head, thereby enhancing the practicality of the support and limit device.

[0043] It should be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article or device.

[0044] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A head support and limit device for eye examination, characterized in that: include: A stabilizing component (100), the stabilizing component (100) comprising a receiving component (101), the upper end of the receiving component (101) being rotatably connected to a limiting component (102); A moving mechanism (200), the moving mechanism (200) comprising a supporting assembly (201) mounted on the upper end of a receiving assembly (101), a transmission assembly (202) mounted on the lower end of the supporting assembly (201), and a fastening assembly (203) detachably mounted inside the transmission assembly (202); A positioning assembly (300), the positioning assembly (300) comprising a mounting assembly (301) installed inside a supporting assembly (201), the side surfaces of the mounting assembly (301) being slidably connected to a first positioning mechanism (302) and a second positioning mechanism (303), and a third positioning mechanism (304) being detachably mounted on the upper end of the mounting assembly (301).

2. The head support and limiting device for eye examination according to claim 1, characterized in that: The receiving assembly (101) comprises a bracket (1011), the lower end of the bracket (1011) is fixedly connected to a cross frame (1012), and the upper end of the bracket (1011) is respectively fixedly connected to a table top (1013) and a seat board (1014).

3. The head support and limiting device for eye examination according to claim 2, characterized in that: The limiting assembly (102) comprises two guardrails (1021) rotatably connected to the upper end of the seat plate (1014), two guard nets (1022) are arranged inside the two guardrails (1021), positioning rods (1023) are inserted into two of the guard bars of the two guardrails (1021), lifting grooves (1024) are provided on the side surfaces of the two guard bars, and a toggle rod (1025) is fixedly connected to the side surface of the positioning rod (1023).

4. The head support and limiting device for eye examination according to claim 3, characterized in that: Slide grooves (10111) are provided on both sides of the table top (1013); the lower end of the table top (1013) is fixedly connected to two mounting plates (10112); the upper end of the seat plate (1014) is respectively provided with two rotating holes (10113) and four positioning holes (10114); the lower ends of the two guardrails (1021) are both rotatably connected to the inside of the rotating hole (10113); and the positioning rod (1023) is inserted into the inside of the positioning hole (10114).

5. The head support and limiting device for eye examination according to claim 2, characterized in that: The support assembly (201) comprises two support rods (2011) mounted on both sides of the upper end of the table top (1013); the inner walls of the upper ends of the two support rods (2011) are fixedly connected with a screw tube (2012); the internal threads of the screw tube (2012) are connected with a tightening bolt (2013); the upper ends of the two support rods (2011) are provided with a plug hole (2014); the two sides of the two support rods (2011) are provided with a fastening hole (2015); the inner walls of the two support rods (2011) are fixedly connected with a slider (2016); the slider (2016) is slidably connected to the inside of the slide groove (10111); and the opposite surfaces of the two support rods (2011) are provided with a connecting groove (2017).

6. The head support and limiting device for eye examination according to claim 5, characterized in that: The transmission assembly (202) comprises a lead screw (2021) and a guide rod (2022) respectively installed inside two support rods (2011); one end of the lead screw (2021) is fixedly connected to a first synchronous pulley (2023); a servo motor (2024) is installed at the lower end of the table top (1013); an output end of the servo motor (2024) is connected to a second synchronous pulley (2025); and a synchronous belt (2026) is connected between the first synchronous pulley (2023) and the second synchronous pulley (2025).

7. The head support and limiting device for eye examination according to claim 5, characterized in that: The fastening assembly (203) comprises a connecting rod (2031) installed between two support rods (2011), both ends of the connecting rod (2031) are fixedly connected with connecting blocks (2032), and the connecting blocks (2032) are inserted into the interior of the connecting groove (2017); a handle (2033) is connected between the two support rods (2011), both ends of the handle (2033) are fixedly connected with connecting bolts (2034), the side surfaces of the two connecting bolts (2034) are threadedly connected with fastening rods (2035), and the opposite surfaces of the two fastening rods (2035) are provided with connecting screw holes (2036), the connecting bolts (2034) are threadedly connected to the interior of the connecting screw holes (2036), and the fastening rods (2035) are inserted into the interior of the fastening holes (215).

8. The head support and limiting device for eye examination according to claim 5, characterized in that: The erection assembly (301) comprises a rack rod (3011) inserted into the interior of the insertion holes (2014) at the upper ends of two support rods (2011); two handles (3012) are sleeved on the lower end of the rack rod (3011); and a screw ring (3013) is fixedly connected to the upper end of the rack rod (3011).

9. The head support and limiting device for eye examination according to claim 8, characterized in that: The first positioning mechanism (302) comprises a supporting plate (3021) sleeved on the side surface of the frame rod (3011), an arc-shaped groove (3022) is formed at the upper end of the supporting plate (3021), and a supporting pad (3023) is installed inside the arc-shaped groove (3022).

10. The head support and limiting device for eye examination according to claim 8, characterized in that: The second positioning mechanism (303) comprises two lifting tubes (3031) sleeved on the side surface of the frame rod (3011), a forehead limiting plate (3032) is fixedly connected between the two lifting tubes (3031), the side surface of the forehead limiting plate (3032) is respectively connected to a first limiting belt (3033) and a second limiting belt (3034), and the inner wall of the first limiting belt (3033) and the side surface of the second limiting belt (3034) are respectively provided with a thorny Velcro (3035) and a fur Velcro (3036); The third positioning mechanism (304) comprises a top limit cover (3041), the top limit cover (3041) is fixedly connected to the side plate (3042) at both ends, the upper end of the side plate (3042) is provided with a guide hole (3043), the frame rod (3011) is inserted into the inside of the guide hole (3043), the upper end of the top limit cover (3041) is fixedly connected to a fixing ring (3044), the fixing ring (3044) is installed with a bearing (3045) inside, and the bearing (3045) is fixedly connected to the side plate (3042). A lifting bolt (3046) is inserted into the interior of the bearing (3045), a rotating handle (3047) is fixedly connected to the upper end of the lifting bolt (3046), a plurality of limit strips (3048) are fixedly connected to the inner wall of the bearing (3045), a plurality of strip grooves (3049) are formed on the side surface of the lower end of the lifting bolt (3046), a plurality of limit strips (3048) are clamped in the interior of the strip grooves (3049), and the lifting bolt (3046) is threadedly connected to the interior of the screw ring (3013).

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