Head fixing band adjusting device of portable nystagmus view instrument

Abstract

The utility model discloses a head fixing band adjusting device of a portable nystagmus view instrument, which comprises a base, a head fixing band adjusting device and a head fixing band adjusting device, and is characterized in that a groove is formed in the rear side of the base, and a limiting back plate covers the groove in a buckling manner; the axis column is vertically arranged in the groove, and a reset spring and a gear shaft are sequentially mounted on the axis column; the adjusting knob is arranged on the outer wall of the limiting back plate, and a main shaft of the adjusting knob penetrates through the thin wall of the limiting back plate to be connected with the gear shaft; one end of the left anti-slip head band is an adjusting end, the other end of the left anti-slip head band is a connecting end, an adjusting square hole is formed in the adjusting end, and a lower rack is arranged on the side wall of the lower side of the adjusting square hole; one end of the right non-slip head band is an adjusting end, the other end of the right non-slip head band is a connecting end, an adjusting square hole is also formed in the adjusting end, and an upper rack is arranged on the side wall of the upper side of the adjusting square hole; wherein the adjusting ends of the left anti-slip head band and the right anti-slip head band are arranged in the groove after being in lap joint with each other, and the upper rack and the lower rack are respectively meshed on the outer wall gear ring of the gear shaft, so that when the gear shaft rotates, the left anti-slip head band and the right anti-slip head band can be pushed.

Description

Technical Field

[0001] The utility model relates to the technical field of nystagmus imaging instruments, in particular to a head fixing belt adjusting device of a portable nystagmus imaging instrument. Background Art

[0002] During a nystagmography test, it is necessary to ensure that the head-mounted nystagmography device worn by the patient is tight and comfortable. This is because during a nystagmography test, the patient is usually required to cooperate with various frequency head shaking movements or head tilting and tilting movements in a supine position. At this time, it is necessary to ensure that the position of the head-mounted nystagmography device remains unchanged after being worn and calibrated. It is important that the position of the infrared camera relative to the patient's eyeballs cannot shift, otherwise the authenticity and accuracy of the test results will be affected. At the same time, the head-mounted nystagmography device cannot be too tight on the patient's head, otherwise it will cause the patient to feel pressure and discomfort. A VR nystagmus monitor wearing structure with publication number CN 220124666 U includes a VR nystagmus monitor body, wherein a first mounting frame is integrally connected to the middle right sides of the front and rear parts of the VR nystagmus monitor body, and a strap is screwed inside the first mounting frame, wherein the right sides of the strap are respectively connected to a first "S"-shaped strap frame; a connecting plate is integrally connected to the inner sides of the first "S"-shaped strap frames, and a second "S"-shaped strap frame is integrally connected to the upper middle part of the connecting plate; a second mounting frame is integrally connected to the middle right side of the upper part of the VR nystagmus monitor body, and a supporting top strap structure is connected inside the second mounting frame. The arrangement of the cloth cover, the first top strap, the second top strap, the flexible plate, the support rod and the protective cover of the utility model, and the wearing structure still have some problems in the actual use process, such as: the supporting top strap structure of the wearing structure and the straps and the connecting plate are connected by a Japanese-shaped strap frame. When the patient wears and adjusts the tightness of the straps, it is necessary to pull and adjust the straps through the Japanese-shaped strap frame, which is not convenient and may cause discomfort to the patient. During the actual examination process, when the patient shakes his head and other actions, the straps adjusted and fixed by the Japanese-shaped strap frame will become loose due to the lack of a limit, and the nystagmus examination device worn by the patient may be displaced. When the nystagmus examination device is removed after the test is completed, the straps need to be pulled and loosened again through the Japanese-shaped strap frame, which may easily pull the patient's hair. Utility Model Content

[0003] In order to solve the above technical problems, the present invention provides a head fixing strap adjustment device for a portable nystagmus imager.

[0004] In order to achieve the above-mentioned purpose, the technical solution of the present utility model is as follows:

[0005] A head fixing strap adjustment device for a portable nystagmography device, comprising:

[0006] The base has a groove on its rear side, and a limit back plate is buckled on the groove;

[0007] The shaft column is vertically arranged in the groove, and the return spring and the gear shaft are installed on it in sequence;

[0008] The adjusting knob is arranged on the outer wall of the limit back plate, and its main shaft passes through the thin wall of the limit back plate and is connected to the gear shaft;

[0009] The left anti-slip headband has an adjustment end at one end and a connection end at the other end. The adjustment end is provided with an adjustment square hole, and a lower rack is provided on the side wall below the adjustment square hole.

[0010] The right anti-slip headband has an adjustment end at one end and a connection end at the other end. The adjustment end is also provided with an adjustment square hole, and an upper rack is provided on the side wall above the adjustment square hole.

[0011] The adjustment ends of the left and right anti-slip headbands are overlapped and arranged in the groove, and the upper and lower racks are respectively engaged with the gear ring on the outer wall of the gear shaft, so that when the gear shaft rotates, the left and right anti-slip headbands can be pushed;

[0012] The connecting ends of the left anti-slip headband and the right anti-slip headband are connected to the two sides of the shell through adjustable and detachable buckles.

[0013] The front side of the base is provided with base cushioning cotton.

[0014] Two sliding bar holes are provided on the adjustment ends of the left anti-slip headband and the right anti-slip headband, and the two sliding bar holes are respectively corresponding to the left upper limit pin and the right lower limit pin on the rear side wall of the base.

[0015] The buckle comprises:

[0016] A connecting plate, the front end of which is hinged to the outer wall of the shell;

[0017] The card board has card slots on its upper and lower sides, and the card board is plugged into the connecting plate through the card slots;

[0018] Wherein, both the connecting plate and the clamping plate are provided with mounting strip holes and are connected to each other by bolts.

[0019] The utility model also includes:

[0020] The battery is disposed in a battery compartment in the base, and an inlet of the battery compartment is disposed at the bottom of the base;

[0021] The bottom cover of the battery compartment snaps onto the entrance of the battery compartment;

[0022] The upper headband is arranged on the upper part of the base, one end of which is plugged into the plug interface on the top of the base, and the other end is fixed to the shell through the upper headband fixing strip;

[0023] A wire is provided in the upper headband, one end of the wire is connected to the battery, and the other end is connected to the power supply part of the nystagmus imager.

[0024] The beneficial effects of the utility model are:

[0025] 1. The utility model solves the problem of tightness and comfort of patients wearing portable nystagmus during nystagmus examination. The device can be quickly and easily put on, adjust the tightness, take off and position the portable nystagmus. The operation is simple, which can facilitate the operation of medical staff, save examination time, and will not pull the patient's hair when taking it off.

[0026] 2. The base area is large and equipped with base cushioning cotton to reduce the pressure on the head and improve the comfort of the wearer.

[0027] 3. The connection between this device and the portable nystagmography instrument is a snap-on pull-out type, which is very convenient to install and disassemble and can be widely applied to similar products.

[0028] 4. The present invention allows for quick and easy donning, tightness adjustment, positioning, and removal of the portable nystagmography device, and has a position limiting function. After positioning, it is not easy to loosen, and the adjusted tightness can be maintained when the patient performs examinations such as shaking the head, hanging the head in the supine position, or tilting the head. After the test is completed, the device can be easily removed by pressing the unlock button and turning the knob clockwise without pulling the patient's hair. The head fixing strap is made of three layers of material. The inner and outer layers are both made of high-strength solid silicone, and the middle layer is a stress-bearing layer made of PVC. While ensuring comfort, the head fixing strap can be prevented from deformation and loosening due to pulling and tightness adjustment. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0030] Figure 1 It is a structural diagram of the utility model;

[0031] Figure 2 It is an exploded view of the present utility model. DETAILED DESCRIPTION

[0032] To make the objectives, technical solutions, and advantages of the present invention more clearly understood, the present invention is further described below in conjunction with specific embodiments and with reference to the accompanying drawings. It should be understood that these descriptions are merely illustrative and are not intended to limit the scope of the present invention. Furthermore, descriptions of known structures and technologies are omitted in the following description to avoid unnecessary confusion regarding the concepts of the present invention.

[0033] like Figure 1 and Figure 2As shown, a head strap adjustment device for a portable nystagmography device includes: a base 106, a groove provided on the rear side of which is covered with a limit back plate 113; a shaft column 112, vertically arranged in the groove, on which a return spring 109 and a gear shaft 108 are sequentially mounted; an adjustment knob 103, arranged on the outer wall of the limit back plate 113, whose main shaft passes through the thin wall of the limit back plate 113 and is connected to the gear shaft 108; a left anti-slip head strap 101, one end of which is an adjustment end and the other end is a connecting end, the adjustment end is provided with an adjustment square hole, and a lower rack is provided on the side wall below the adjustment square hole; The anti-slip headband 102 has one end as an adjustment end and the other end as a connecting end, and an adjustment square hole is also provided on the adjustment end, and an upper rack is provided on the side wall above the adjustment square hole; wherein, the adjustment ends of the left anti-slip headband 101 and the right anti-slip headband 102 are overlapped with each other and set in the groove, and the upper rack and the lower rack are respectively engaged with the outer wall gear ring of the gear shaft 108, so that when the gear shaft 108 rotates, the left anti-slip headband 101 and the right anti-slip headband 102 can be pushed; wherein, the connecting ends of the left anti-slip headband 101 and the right anti-slip headband 102 are connected to the two sides of the shell 8 through adjustable and detachable buckles.

[0034] like Figure 1 and Figure 2 As shown, a base cushioning cotton 107 is provided on the front side of the base 106 .

[0035] like Figure 1 and Figure 2 As shown, two sliding bar holes are provided on the adjustment ends of the left anti-slip headband 101 and the right anti-slip headband 102, and the two sliding bar holes are respectively corresponding to the left upper limit pin 110 and the right lower limit pin 111 on the rear side wall of the base 106.

[0036] like Figure 1 and Figure 2 As shown, the buckle includes: a connecting plate 7, the front end of which is hinged on the outer wall of the shell 8; a card plate 20, the upper and lower sides of which are respectively provided with card slots 19, and the card plate 20 is plugged into the connecting plate 7 through the card slots 19; wherein, both the connecting plate 7 and the card plate 20 are provided with mounting strip holes 18, and are connected to each other by bolts 17.

[0037] like Figure 1 and Figure 2 As shown, the present invention further includes: a battery 115, which is arranged in a battery compartment in the base 106, and the entrance of the battery compartment is arranged at the bottom of the base 106; a battery compartment bottom cover 114, which is snapped onto the entrance of the battery compartment; an upper headband 104, which is arranged on the upper part of the base 106, one end of which is plugged into the plug interface at the top of the base 106, and the other end is fixed to the shell 8 through the upper headband fixing strip 105; wherein, a wire is arranged in the upper headband 104, one end of the wire is connected to the battery 115, and the other end is connected to the power part of the nystagmus imager.

[0038] The working principle of this utility model is as follows:

[0039] 1. Install the left anti-slip headband 101, the right anti-slip headband 102 and the upper headband 104 to the portable nystagmus imager. The installation method is as follows: connect the buckles at the ends of the left anti-slip headband 101 and the right anti-slip headband 102 to the matching fasteners on the left and right sides of the portable nystagmus imager, fix one end of the upper headband fixing strip 105 to the corresponding position of the portable nystagmus imager with screws, and insert the other end of the upper headband 104 into the corresponding position of the base and lock it in place.

[0040] 2. Wear the portable nystagmography device equipped with a head strap adjustment device on the subject's head, turn on the device and adjust the position of the portable nystagmography device so that the image acquisition device inside the device is aligned with the subject's eyes.

[0041] 3. Press the adjustment knob 103 and turn it counterclockwise to tighten the left anti-slip headband 101 and the right anti-slip headband 102 toward the middle at the same time. The principle is:

[0042] (1) The adjustment slot above the left anti-slip headband 101 is connected to the left upper limit pin ⑩ on the base 106, the adjustment slot below the right anti-slip headband 102 is connected to the right lower limit pin on the base 106, and the middle area of ​​the overlapping part of the left anti-slip headband 101 and the right anti-slip headband 102 is connected to the axis column 112 on the base 106 (the overlapping part of the left anti-slip headband 101 and the right anti-slip headband 102 is the upper and lower racks);

[0043] (2) The adjusting knob 103 passes through the limiting back plate 113 and is connected to the gear shaft 108. The groove connecting the adjusting knob 103 and the gear shaft 108 is a rounded rectangle. The end of the gear shaft 108 connected to the limiting back plate 113 is also a rounded rectangle. By inserting the rounded rectangular end of the gear shaft 108 into the rounded rectangular groove of the limiting back plate 113, the adjusting knob 103 can be used to rotate the gear shaft 108.

[0044] (3) The gear shaft 108 is hollow, and there is a limit step inside the hollow near one end of the rounded rectangle. A return spring 109 is installed in the hollow of the gear shaft 108, and one end of the return spring 109 presses against the limit step inside the hollow;

[0045] (4) Pass the other end of the gear shaft 108 with the return spring 109 through the middle area of ​​the upper and lower racks where the left anti-slip headband 101 and the right anti-slip headband 102 overlap and insert it into the shaft column 112 on the base. At this time, the outer end of the spring inside the gear shaft 108 will press against the shaft column 108.

[0046] (5) Press the limit back plate 113 and install the limit back plate 113 on the base 106 (the limit back plate 113 is connected to the base 106 by a buckle). At this time, the entire linkage device is formed. Half of the gear on the gear shaft 108 will be in the upper and lower racks of the overlapping part of the left anti-slip headband 101 and the right anti-slip headband 102, and the other half will be in the circular limit groove of the limit back plate. In this way, the head fixing strap is locked and adjusted, and the portable nystagmus imager is positioned;

[0047] (6) Press the adjustment knob 103 to shrink the return spring 109, and the gear on the gear shaft 108 will disengage from the circular limit groove on the limit cover 113, that is, unlock the adjustment device. At this time, turn the adjustment knob 103 clockwise to loosen the head fixing belt, and turn the adjustment knob 103 counterclockwise to tighten the head fixing belt again. When the adjustment is completed, release the pressing adjustment knob 103, and the return spring 109 that has shrunk due to the pressing will automatically reset, and the gear on the gear shaft 108 will automatically rebound to the circular limit groove on the limit back plate 113 to lock the limit;

[0048] (7) Because the upper racks and lower racks on the left anti-slip headband 101 and the right anti-slip headband 102 are of overlapping structure, when the adjustment knob 103 is turned counterclockwise, the right anti-slip headband 102 can be tightened to the left and the left anti-slip headband 101 can be tightened to the right, and vice versa.

[0049] This allows for easy donning, removal, and tightness adjustment of the portable nystagmus meter. The left and right anti-slip headbands 101 and 102 are three-layered, with the middle layer being PVC and the top and bottom layers being high-strength silicone. This ensures the hardness and comfort of the left and right anti-slip headbands. The head fixing strap, with a certain degree of hardness, facilitates donning and removal of the portable nystagmus meter.

[0050] The operator's headband does not need to touch the subject's hair when putting on or taking off the headband, and the headband can effectively prevent the subject's hair from being pulled.

[0051] It should be understood that the above-described specific embodiments of the present invention are merely illustrative of or explanation of the principles of the present invention and do not constitute limitations of the present invention. Therefore, any modifications, equivalent substitutions, improvements, etc. made without departing from the spirit and scope of the present invention shall be included within the scope of protection of the present invention. In addition, the appended claims of the present invention are intended to cover all variations and modifications that fall within the scope and metes and bounds of the appended claims, or equivalents thereof.

Claims

1. A head strap adjustment device for a portable nystagmography device, characterized in that: include: The base (106) has a groove on its rear side, and a limit back plate (113) is buckled on the groove; A shaft column (112) is vertically arranged in the groove, and a return spring (109) and a gear shaft (108) are sequentially mounted thereon; An adjusting knob (103) is arranged on the outer wall of the limiting back plate (113), and its main shaft passes through the thin wall of the limiting back plate (113) and is connected to the gear shaft (108); A left anti-slip headband (101) has one end as an adjustment end and the other end as a connection end, an adjustment square hole is provided on the adjustment end, and a lower rack is provided on the side wall below the adjustment square hole; The right anti-slip headband (102) has one end as an adjustment end and the other end as a connection end, the adjustment end is also provided with an adjustment square hole, and an upper rack is provided on the side wall above the adjustment square hole; The adjustment ends of the left anti-slip headband (101) and the right anti-slip headband (102) are overlapped and arranged in the groove, and the upper rack and the lower rack are respectively engaged with the gear ring on the outer wall of the gear shaft (108), so that when the gear shaft (108) rotates, the left anti-slip headband (101) and the right anti-slip headband (102) can be pushed; The connection ends of the left anti-slip headband (101) and the right anti-slip headband (102) are both connected to the two sides of the housing (8) via adjustable and detachable buckles.

2. The head strap adjustment device for a portable nystagmography device according to claim 1, characterized in that: A base cushioning cotton (107) is provided on the front side of the base (106).

3. The head strap adjustment device for a portable nystagmography device according to claim 1, characterized in that: Two sliding bar holes are provided on the adjustment ends of the left anti-slip headband (101) and the right anti-slip headband (102), and the two sliding bar holes are respectively corresponding to the left upper limit pin (110) and the right lower limit pin (111) on the rear side wall of the base (106).

4. The head strap adjustment device for a portable nystagmography device according to claim 1, characterized in that: The buckle includes: A connecting plate (7), the front end of which is hinged to the outer wall of the housing (8); A card plate (20) is provided with card slots (19) on its upper and lower sides, and the card plate (20) is plugged into the connecting plate (7) through the card slots (19); The connecting plate (7) and the clamping plate (20) are both provided with mounting bar holes (18) and are connected to each other via bolts (17).

5. The head strap adjustment device for a portable nystagmography device according to claim 1, characterized in that: Also includes: A battery (115) is disposed in a battery compartment within the base (106), and an inlet of the battery compartment is disposed at the bottom of the base (106); A battery compartment bottom cover (114) snapped onto the entrance of the battery compartment; An upper headband (104) is arranged on the upper part of the base (106), one end of which is plugged into the plug interface at the top of the base (106), and the other end is fixed to the housing (8) via an upper headband fixing strip (105); A wire is provided in the upper headband (104), one end of the wire is connected to the battery (115), and the other end is connected to the power supply part of the nystagmus imager.

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