Limiting and fixing device for vision examination of children

Abstract

The utility model provides a limiting and fixing device for vision examination of children, and relates to the technical field of vision examination equipment. The child vision examination limiting and fixing device comprises a vision examination machine arranged on a vision examination frame, a pupil detection area is installed at the front end of the vision examination machine, a display panel is installed at the rear end of the vision examination machine, a limiting and fixing assembly is arranged on the vision examination frame, and the limiting and fixing assembly comprises a supporting frame. According to the limiting and fixing device for children vision examination, the fixing frames on the two sides adjust the distance for fixing the head through the distance adjusting assembly and are located right in front of the pupil detection area to limit and fix the head, the fixing shaft rod supports the lower jaw support and is used for bearing the lower jaw, when the sizes of the heads of children are different, the distance can be adjusted according to requirements, and the head size is adjusted; and when the applicability is ensured, the problem of left-right shaking caused by the fact that a child is not easy to match or a large gap exists is also avoided.

Description

Technical Field

[0001] The utility model relates to a vision testing device, in particular to a limiting and fixing device for children's vision testing, belonging to the technical field of vision testing equipment. Background Art

[0002] Eyes are the guiding factor for people's growth. Usually things are judged by the eyes first, so it is extremely important to protect eyesight. The quality of eyesight is mainly determined by the ability of the retina to resolve images. Eyesight should be checked regularly. In children's vision testing, corresponding vision testing equipment will be used for testing.

[0003] Existing patent number CN213030623U This utility model relates to the technical field of medical equipment, and in particular refers to a head and neck auxiliary support device for children's vision examination, including a U-shaped bracket, the U-shaped bracket is fixedly connected in the installation frame, the top of the installation frame is fixedly connected to the bottom of one end of the horizontal plate, the bottom of the other end of the horizontal plate is vertically connected with a column, the column is vertically connected to the top side of the base, the other side of the top of the base is fixedly connected with a detection device, the bottom of the horizontal plate is slidably connected with a sleeve, the top of the sleeve is fixedly connected with a slider, a slide groove is provided at the corresponding position of the bottom of the horizontal plate, the slider is slidably connected in the slide groove, a seat is provided below the horizontal plate, the bottom of the seat is fixed with an L-shaped rod, the top of the L-shaped rod is slidably connected in the sleeve, the top of the L-shaped rod located in the sleeve is fixedly connected with a limit plate, and a ring plate is coaxially connected on the inner wall of the bottom end of the sleeve. This utility model is not only convenient for users to adjust, but also plays a good protective role for patients, and at the same time improves the detection efficiency of patients.

[0004] Traditionally, during vision tests, children usually have to sit in front of a testing stand, align their eyes with the pupil testing area on the vision tester, and then have their vision on that side tested. During the test, it is particularly important to limit the head. However, the above-mentioned method can only adjust the seat, but children's heads vary in size, and the fixed range cannot be adjusted when the head is fixed. This can improve applicability and avoid the problem of children's difficulty in cooperating during the test, resulting in swaying from side to side. Utility Model Content

[0005] 1. Technical issues to be resolved

[0006] The purpose of the present utility model is to provide a children's vision examination limit fixing device in order to solve the above-mentioned problem, so as to solve the problem that there are differences in the size of children's heads in the prior art and the fixing interval cannot be adjusted when the head is fixed and limited, so as to improve the applicability and avoid the problem that the child is difficult to cooperate during the examination, resulting in shaking left and right.

[0007] (II) Technical solution

[0008] The utility model is realized through the following technical scheme: a limiting and fixing device for checking vision of children.

[0009] It includes a vision test machine arranged on a vision test frame, wherein a pupil detection area is installed at the front end of the vision test machine, and a display panel is installed at the rear end of the vision test machine, a limiting fixing component is provided on the vision test frame, and the limiting fixing component includes a support frame, wherein the support frame is installed at the front end of the vision test machine, a supporting table is installed on the top of the support frame, fixing frames are arranged on both sides of the supporting table, and the distance is adjusted by a distance adjustment component, a fixed shaft rod is installed in the middle of the top end of the supporting table, and a jaw support with a protective component is installed on the top of the fixed shaft rod.

[0010] Preferably, the distance adjustment component includes a reverse threaded rotating rod, a reverse threaded rotating rod is opened inside the support table, the reverse threaded rotating rod is horizontally installed on the inner wall of the inner groove through a bearing, sleeves are provided on both sides of the reverse threaded rotating rod through threaded sleeves, the top of the sleeve passes through the support table and a bottom support frame is movably installed, the fixed frames on both sides are correspondingly installed on the side edges of the matching bottom support frame, and the limit fixing interval between the fixed frames on both sides is adjusted according to the size of the head to improve applicability.

[0011] Preferably, the fixing frames on both sides are symmetrically designed, and the chin support is arc-shaped to better support the chin and ensure comfort.

[0012] Preferably, an arc groove is formed on one side of the bottom support frame close to the fixed shaft rod, and the fixed shaft rod is located inside the arc groove, so as to improve the stability of the connection when the fixed frame is folded.

[0013] Preferably, an anti-slip cover is provided on the outside of the reverse threaded rotating rod handle, and the anti-slip cover is designed with rubber material to prevent the hand from slipping.

[0014] Preferably, a protective layer is provided on both the inner and outer sides of the fixing frame, and limit plates are horizontally installed at the front and rear ends of the top of the support platform, and the bottom support frame is located inside the limit plates at the front and rear ends for movement, thereby performing a limit operation on the bottom support frame that is movable on the support platform.

[0015] Preferably, the protective component includes a pillow pad, which is arranged in the chin support groove, and multiple groups of silicone strips are glued on both sides of the pillow pad. A clamping rod is provided in the middle of the bottom end of the pillow pad, and a clamping socket matching the clamping rod is opened in the middle of the top end of the chin support, and the other end of the clamping rod is inserted into the clamping socket, so that when the chin is in contact with the chin support, the comfort of the contact surface can be improved, friction can be avoided, and protective treatment can be performed.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] 1. The children's vision examination limit fixing device has two fixing frames on both sides that adjust the distance between the fixed heads through the distance adjustment components. The fixing frames are located in front of the pupil detection area to limit the head. The fixed shaft supports the chin rest to support the chin. When the children's head sizes are different, the distance can be adjusted according to the needs to ensure the applicability and avoid the problem of children's difficulty in cooperating or the left and right shaking caused by the presence of a large gap.

[0018] 2. In the children's vision examination limit fixing device, when the two side fixing frames are adjusted to the minimum spacing, a matching arc groove is opened on the side of the bottom support frame facing the fixed shaft rod, so that the fixed shaft rod is located in the arc groove, and then the fixing frame is folded.

[0019] 3. The children's vision examination limit fixing device has a pillow pad that matches the arc shape in the chin rest. The card rod is aligned with the card slot and installed. The pillow pad is installed as a whole. When the chin is in contact with the chin rest, the comfort of the contact surface can be improved, friction can be avoided, and protection can be performed. Silicone strips are located on both sides of the chin to prevent slipping. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model;

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

[0022] Figure 3 It is a schematic diagram of a partial structure of the utility model when viewed from above;

[0023] Figure 4 It is a schematic diagram of the split local structure of the utility model;

[0024] Figure 5 For this utility model Figure 2 A schematic diagram of the local structure of the front section in FIG.

[0025] Figure 6 It is a schematic diagram of the partial structure of the left side cross-section of the utility model.

[0026] In the figure: 1. vision test frame; 101. vision test machine; 102. pupil detection area; 103. display panel; 104. support frame; 105. support table; 106. fixed frame; 107. protective layer; 108. internal groove; 109. reverse threaded rotating rod; 110. sleeve; 111. anti-slip sleeve; 112. bottom support frame; 113. limit plate; 2. fixed shaft rod; 201. chin rest; 202. pillow pad; 203. silicone strip; 204. clamping rod; 205. clamping port; 206. arc groove. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] See also Figure 1 , Figure 2 , Figure 3 and Figure 4 , including a vision test machine 101 arranged on a vision test frame 1, a pupil detection area 102 is installed at the front end of the vision test machine 101, and a display panel 103 is installed at the rear end of the vision test machine 101, a limiting fixing component is provided on the vision test frame 1, and the limiting fixing component includes a support frame 104, the support frame 104 is installed at the front end of the vision test machine 101, a supporting table 105 is installed on the top of the support frame 104, fixing frames 106 are arranged on both sides of the supporting table 105, and the distance is adjusted by a distance adjustment component, a fixed shaft rod 2 is installed in the middle of the top end of the supporting table 105, and a chin support 201 with a protective component is installed on the top of the fixed shaft rod 2.

[0029] When the utility model is in use, the child vision detection device is composed of a vision detection frame 1, a vision inspection machine 101, a pupil detection area 102 and a display panel 103. When a child sits in front of the vision inspection frame 1 and aligns his eyes with the pupil detection area 102, a support frame 104 for supporting a support plate 105 is installed at the front end of the vision inspection machine 101. Symmetrical fixing frames 106 are provided on both sides of the support frame 104. The fixing frames 106 on both sides are used to adjust the distance between the fixed heads through the distance adjustment components. Adjustment is performed to be located in front of the pupil detection area 102 to limit and fix the head. A fixed shaft rod 2 is installed in the middle of the support plate 105 to support the chin support 201. When the head is in the fixed frame 106, the chin is supported to ensure comfort while avoiding left and right movement. When there are differences in the size of children's heads, the spacing inside the fixed frame 106 can be adjusted to ensure applicability while avoiding the problem of children's difficulty in cooperating or shaking left and right due to a large gap.

[0030] Please refer again Figure 3 and Figure 5The distance adjustment component includes a reverse threaded rotating rod 109, a reverse threaded rotating rod 109 is opened inside the support plate 105, and the reverse threaded rotating rod 109 is horizontally installed on the inner wall of the internal groove 108 through a bearing. Sleeves 110 are provided on both sides of the reverse threaded rotating rod 109 through threaded sleeves. The top of the sleeve 110 passes through the support plate 105 and is movably installed with a bottom support frame 112. The fixed frames 106 on both sides are correspondingly installed on the sides of the matching bottom support frame 112.

[0031] When the utility model is in use: by rotating the handle outside the inner groove 108 at the extension of the reverse threaded rotating rod 109, wherein the reverse threaded rotating rod 109 is horizontally installed inside the inner groove 108 through a bearing, and the sleeve 110 is threadedly sleeved on both sides of the reverse threaded rotating rod 109, and is connected to the fixing frame 106 through the corresponding bottom support frame 112, and then under the action force, when the sleeve 110 is driven to rotate inside the inner groove 108, the sleeves 110 on both sides are driven to move away from or to one end of the other side, so that the fixing frame 106 moves in the same direction, and the limit fixing interval between the fixing frames 106 on both sides is adjusted according to the size of the head to improve applicability.

[0032] Please refer again Figure 2 , Figure 3 and Figure 4 The fixing frames 106 on both sides are symmetrically designed, and the chin support 201 is arc-shaped; an arc groove 206 is opened on the side of the bottom support frame 112 close to the fixed shaft rod 2, and the fixed shaft rod 2 is located inside the arc groove 206; an anti-slip cover 111 is provided on the outside of the handle of the reverse threaded rotating rod 109, and the anti-slip cover 111 is designed with rubber material; a protective layer 107 is provided on the inside and outside of the fixing frame 106, and the front and rear ends of the top of the support platform 105 are horizontally installed with limit plates 113, and the bottom support frame 112 is located inside the front and rear end limit plates 113 for movement.

[0033] When the utility model is in use: the chin support 201 is designed to be arc-shaped, which can better support the chin and ensure comfort, so that the chin can be placed in the chin support 201 to prevent left and right deviation; when the fixing frames 106 on both sides are adjusted to the minimum spacing, a matching arc groove 206 is opened on the side of the bottom support frame 112 facing the fixed shaft rod 2, so that the fixed shaft rod 2 is located in the arc groove 206, thereby retracting the fixing frame 106 and improving the stability of the connection; the outside of the handle of the reverse threaded rotating rod 109 is provided with an anti-slip sleeve 111, so that when the reverse threaded rotating rod 109 is rotated When the threaded rotating rod 109 is used as the handle, the anti-skid sleeve 111 will contact the hand, which increases the friction and prevents the hand from slipping; when the bottom support frame 112 is located on the supporting platform 105 for movement, limit plates 113 are provided at its front and rear ends, so that it can move left and right at the inner end of the limit plate 113 to perform a limit operation; the protective layer 107 glued to the inner and outer surfaces of the fixing frame 106 is made of rubber material, and the width of the protective layer 107 is designed to be not less than the width of the fixing frame 106. When the fixing frame 106 is used to fix the head contact, the contact surface can be protected.

[0034] Please refer again Figure 4 , Figure 5 and Figure 6 The protective component includes a pillow pad 202, which is arranged in the groove of the chin support 201. Both sides of the pillow pad 202 are glued with multiple groups of silicone strips 203. A clamping rod 204 is provided in the middle of the bottom end of the pillow pad 202, and a clamping port 205 matching the clamping rod 204 is opened in the middle of the top end of the chin support 201, and the other end of the clamping rod 204 is inserted into the inside of the clamping port 205.

[0035] When the utility model is in use: the chin support 201 is located above the chin support 201 to fix the support of the shaft rod 2. When the head is located in the fixing frame 106 and the chin is supported, a pillow pad 202 matching the arc shape is provided in the chin support 201 on the contact surface with the chin. The outer skin of the pillow pad 202 is made of cotton cloth, etc., and the inner core of the pillow pad 202 is filled with cotton. The clamping rod 204 is connected to the bottom of the pillow pad 202, and the clamping rod 204 is aligned with the clamping port 205 for insertion. The pillow pad 202 is installed as a whole, so that when the chin is in contact with the chin support 201, the comfort of the contact surface can be improved, friction can be avoided, and protection treatment can be performed. At the same time, a plurality of groups of silicone strips 203 are provided at the joints between the chin support 201 and the two sides of the chin to improve the friction of the contact surface and avoid slipping.

[0036] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A positioning and fixing device for children's vision testing, comprising a vision testing machine (101) arranged on a vision testing frame (1), characterized in that: The front end of the vision test machine (101) is provided with a pupil detection area (102), and the rear end of the vision test machine (101) is provided with a display panel (103); a limit fixing component is provided on the vision test frame (1), and the limit fixing component comprises a support frame (104); the support frame (104) is installed at the front end of the vision test machine (101); a support table (105) is installed on the top of the support frame (104); fixing frames (106) are provided on both sides of the support table (105), and the distance is adjusted by a distance adjustment component; a fixed shaft rod (2) is installed in the middle of the top end of the support table (105), and a chin support (201) with a protective component is installed on the top of the fixed shaft rod (2).

2. A children's vision testing limiting and fixing device according to claim 1, characterized in that: The pitch adjustment assembly comprises a reverse threaded rotating rod (109), a reverse threaded rotating rod (109) is provided inside the support platform (105), the reverse threaded rotating rod (109) is horizontally mounted on the inner wall of the internal groove (108) through a bearing, sleeves (110) are provided on both sides of the reverse threaded rotating rod (109) through threaded sleeves, the top of the sleeve (110) passes through the support platform (105) and is movably mounted with a bottom support frame (112), and the fixed frames (106) on both sides are correspondingly mounted on the sides of the matching bottom support frame (112).

3. A children's vision testing limiting and fixing device according to claim 1, characterized in that: The fixing frames (106) on both sides are symmetrically designed, and the chin support (201) is arc-shaped.

4. A children's vision testing limiting and fixing device according to claim 2, characterized in that: An arc-shaped groove (206) is provided on one side of the bottom support frame (112) close to the fixed shaft rod (2), and the fixed shaft rod (2) is located inside the arc-shaped groove (206).

5. A children's vision testing limiting and fixing device according to claim 2, characterized in that: The outside of the handle of the reverse threaded rotating rod (109) is provided with an anti-slip cover (111), and the anti-slip cover (111) is designed with a rubber material.

6. A children's vision testing limiting and fixing device according to claim 1, characterized in that: The fixing frame (106) is provided with a protective layer (107) on both the inner and outer sides, and the top of the supporting platform (105) is horizontally installed with a limiting plate (113) at the front and rear ends, and the bottom support frame (112) is located inside the limiting plates (113) at the front and rear ends for movement.

7. A children's vision testing limiting and fixing device according to claim 1, characterized in that: The protective component comprises a pillow pad (202), the pillow pad (202) is arranged in a groove of a chin support (201), a plurality of groups of silicone strips (203) are glued to both sides of the pillow pad (202), a clamping rod (204) is arranged in the middle of the bottom end of the pillow pad (202), a clamping opening (205) matching with the clamping rod (204) is arranged in the middle of the top end of the chin support (201), and the other end of the clamping rod (204) is inserted into the inside of the clamping opening (205).

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