Double-safety lock for head pillow support of dental comprehensive treatment machine

Abstract

The utility model discloses a dental comprehensive treatment machine head pillow support double-safety lock which comprises a lock body, a through hole is formed in the center of the inner wall of the lock body, the inner wall of the through hole is connected with a Y-shaped key in a sliding mode, the bottom of the Y-shaped key is elastically connected with a reset spring, the top of the Y-shaped key is a round rod, the bottom of the round rod is a sliding rail, and the top of the round rod is provided with a sliding groove. The utility model relates to the technical field of headrest support double-safety locks, in particular to a headrest support double-safety lock, which comprises a left sliding rail and a right sliding rail, sliding grooves are formed in the inner walls of the two sliding rails, and the inner walls of the sliding grooves are connected with locking blocks in a sliding manner. A first gear disc is meshed with the outer wall of a shaft pin mounted on the inner walls of a headrest and a support of a dental comprehensive treatment machine through a second gear disc; and meanwhile, third gear discs are arranged on the outer wall of the bottom end of the rotating shaft and the outer wall of the locking rod for meshing, so that double locking of the two locking points is achieved, dislocation movement can be avoided, and the use safety of the equipment is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a support double insurance lock technical field, specifically is a dental comprehensive treatment machine headrest support double insurance lock. BACKGROUND

[0002] In the dental treatment process, the patient usually needs to lie on the treatment chair, and the stability of the headrest is crucial for the comfort of the patient and the smooth progress of the treatment, the locking of the headrest support of the existing dental treatment chair generally only has one locking point, in the actual use process, the locking point is prone to loosening due to the weight of the patient, the activity of sitting on the treatment chair, thereby causing the misplacement rotation of the headrest support of the dental comprehensive treatment machine, and there is certain safety hazard, which is inconvenient to use. UTILITARY MODEL CONTENT

[0003] The utility model aims at providing a dental comprehensive treatment machine headrest support double insurance lock to solve the problems in the above background technology.

[0004] In order to achieve the above object, the utility model provides the following technical scheme:

[0005] A dental comprehensive treatment machine headrest support double insurance lock,

[0006] In a preferred embodiment of the utility model, the inner wall center position of the lock body is provided with a through hole, the inner wall of the through hole is slidably connected with a Y-shaped key, the bottom of the Y-shaped key is elastically connected with a return spring, the top of the Y-shaped key is a round rod, the bottom of the round rod is a slide rail, the left and right sides of the slide rail are provided with two, the inner wall of the two slide rails is provided with a sliding groove, the inner wall of the sliding groove is slidably connected with a locking block, the bottom of the lock body is fixedly connected with a locking rod on the left and right outer walls, and the locking block is connected with the outer wall of the locking rod.

[0007] In a preferred embodiment of the utility model, the left and right sides of the lock body are circular, the inner wall of the left and right sides of the lock body is provided with a round hole, and the outer wall of the left and right sides of the lock body is fixedly connected with a first gear disc.

[0008] In a preferred embodiment of the utility model, the left and right sides of the two slide rails are symmetrical and in the shape of an eight, and the outer wall of the side of the locking block close to the slide rail is provided with a clamping block for cooperating with the sliding clamping of the sliding groove.

[0009] In a preferred embodiment of the utility model, the inner wall of the locking block is provided with a limiting hole, the outer wall of the side of the locking block away from the slide rail is provided with an arc-shaped groove, and the arc-shaped groove is used for cooperating with the outer wall of the locking rod for clamping locking.

[0010] In a preferred embodiment of the utility model, the bottom outer wall of the round rod is fixed with a first spring limiting rod, the bottom of the lock body is provided with a bottom shell, and the inner wall of the bottom shell is fixedly provided with a second spring limiting rod.

[0011] In a preferred embodiment of the utility model, the first spring limiting rod and the second spring limiting rod are matched for clamping a reset spring, the inner wall of the bottom shell is provided with screw holes, and the left and right screw holes are threadedly connected with screws.

[0012] In a preferred embodiment of the utility model, the inner wall of the lock body is provided with a second screw hole, and the screw is threadedly connected with the second screw hole through the screw hole and the limiting hole.

[0013] In a preferred embodiment of the utility model, the left and right outer walls of the bottom shell are provided with lock holes, the lock block is clamped and locked with the outer wall of the locking rod through the lock hole, and the top of the lock body is fixedly connected with a lock body bin.

[0014] The additional aspects and advantages of the utility model will be partially given in the following description, some will become obvious from the following description, or will be known by the practice of the utility model.

[0015] 1. By setting first gear disc and dental comprehensive treatment machine headrest and support inner wall on the shaft pin outer wall through second gear disc meshing, and setting third gear disc on the bottom end outer wall of the rotating shaft and the outer wall of the locking rod, meshing is realized, so that two locking points are double-locked, the safety of the device is improved after the angle of the dental comprehensive treatment machine headrest and support is adjusted, and displacement movement is avoided, the safety of the device is improved.

[0016] 2. By setting Y-shaped key and lock body, when the lock body and the Y-shaped key are pressed, the upper and lower two locking points can be engaged and released step by step, the angle deflection of the dental comprehensive treatment machine headrest is avoided, and the safety of the operation is improved. BRIEF DESCRIPTION OF DRAWINGS

[0017] The above and / or additional aspects and advantages of the utility model will become apparent and will be easily understood from the description of the embodiments below in conjunction with the following drawings, in which:

[0018] Figure 1 It is a front view structural schematic diagram of a dental comprehensive treatment machine headrest support double insurance lock.

[0019] Figure 2 It is a bottom view structural schematic diagram of a dental comprehensive treatment machine headrest support double insurance lock.

[0020] Figure 3It is a split structure schematic view of a double insurance lock of a headrest support of a dental comprehensive treatment machine;

[0021] Figure 4 It is a structure schematic view of a locking assembly of a double insurance lock of a headrest support of a dental comprehensive treatment machine;

[0022] Figure 5 It is a structure schematic view of a bottom shell of a double insurance lock of a headrest support of a dental comprehensive treatment machine.

[0023] In the figure: lock body 100, lock body bin 110, round hole 120, locking rod 130, second screw hole 140, through hole 150, round rod 200, sliding rail 210, sliding groove 220, first spring limiting rod 230, locking block 240, clamping block 241, limiting hole 242, arc-shaped groove 243, reset spring 250, bottom shell 300, second spring limiting rod 310, lock hole 320, screw 330. DETAILED DESCRIPTION

[0024] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the drawings, wherein the same or similar reference numerals represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present application, and cannot be understood as a limitation of the present application.

[0025] Embodiment 1: as Figures 1-4 , including lock body 100, the inner wall center position of lock body 100 is provided with through hole 150, the inner wall of through hole 150 is slidably connected with Y-shaped button, the bottom of Y-shaped button is elastically connected with reset spring 250, the top of Y-shaped button is round rod 200, the bottom of round rod 200 is sliding rail 210, two sliding rails 210 are arranged on the left and right, the inner wall of two sliding rails 210 is provided with sliding groove 220, the inner wall of sliding groove 220 is slidably connected with locking block 240, the bottom of lock body 100 is fixedly connected with locking rod 130 on the left and right outer walls, locking block 240 is connected with locking rod 130 on the outer wall.

[0026] The specific use scene of this embodiment is: the first gear disc 121 is engaged with the shaft pin outer wall installed on the inner wall of the headrest and support of the dental comprehensive treatment machine, the second gear disc is engaged, and the third gear disc is engaged on the outer wall of the bottom end of the rotating shaft and the outer wall of the locking rod 130, so that two locking points are double-locked, the angle of the headrest and support of the dental comprehensive treatment machine is adjusted, displacement movement is avoided, the safety of equipment use is improved, the Y-shaped button and the lock body 100 are used in cooperation, so that when the lock body 100 and the Y-shaped button are pressed, the upper and lower locking points can be engaged and released step by step, the angle deflection of the headrest of the dental comprehensive treatment machine caused by accidents is avoided, and the safety of operation is improved.

[0027] Embodiment 2: as Figure 1 and Figure 2 The left and right sides of the lock body 100 are circular, the circular inner wall of the left and right sides of the lock body 100 is provided with a round hole 120, and the outer wall of the left and right sides of the lock body 100 is fixedly connected with a first gear disc 121.

[0028] The specific use scene of this embodiment is: the two ends of the lock body 100 are circular, so that the angle is conveniently adjusted after the lock body 100 is connected with the headrest and support of the dental comprehensive treatment machine, and the round hole 120 is used for connecting the rotating shaft, so that the rotating connection between the headrest and support of the dental comprehensive treatment machine and the lock body 100 is facilitated.

[0029] Embodiment 3: as Figures 3-5 The two slide rails 210 are left-right symmetrical and in a spread shape, the locking block 240 is provided with a clamping block 241 on the outer wall of one side close to the slide rail 210, the clamping block 240 is provided with a limiting hole 242 in the inner wall, the outer wall of one side of the locking block 240 away from the slide rail 210 is provided with an arc-shaped groove 243, the arc-shaped groove 243 is used for clamping and locking with the outer wall of the locking rod 130, the bottom outer wall of the round rod 200 is fixed with a first spring limiting rod 230, the bottom shell 300 is installed at the bottom of the lock body 100, the second spring limiting rod 310 is fixedly installed in the inner wall of the bottom shell 300, the first spring limiting rod 230 and the second spring limiting rod 310 are used for clamping the reset spring 250 in cooperation, the inner wall of the bottom shell 300 is provided with two screw holes, the inner wall of the two screw holes is threadedly connected with a screw 330, the inner wall of the lock body 100 is provided with a second screw hole 140, the screw 330 is threadedly connected with the second screw hole 140 through the screw hole and the limiting hole 242, the outer wall of the left and right sides of the bottom shell 300 is provided with a lock hole 320, the locking block 240 passes through the lock hole 320 and is clamped and locked with the outer wall of the locking rod 130, and the top of the lock body 100 is fixedly connected with the lock body bin 110.

[0030] The specific use scene of the embodiment is: when the headrest and support of the dental unit are adjusted in rotation, the lock body bin 110 is pressed at the top of the lock body 100, the lock body bin 110 drives the lock body 100 and the first gear plate 121 to move downward, so that the first gear plate 121 and the second gear plate are disengaged, then the Y-shaped button is pressed, the Y-shaped button drives the locking block 240 to move downward, so that the locking block 240 is retracted into the inside of the lock hole 320, so that the locking block 240 can be disengaged from the outer wall of the locking rod 130, then the headrest and support of the dental unit can be rotated through the shaft pin respectively, after rotating to any angle in the meshing state of the two third gear plates, the adjustment is completed, then the Y-shaped button is released, the Y-shaped button and the locking block 240 are reset under the action of the reset spring 250, the locking block 240 moves upward again, extends out of the lock hole 320, and is matched and clamped with the outer wall of the locking rod 130 through the arc-shaped groove 243 of the limiting hole 242, so as to lock the locking rod 130, avoid the rotation of the locking rod 130, complete the first double insurance locking, then the lock body bin 110 is released, the lock body 100 and the lock body bin 110 are reset, so that the first gear plate 121 and the second gear plate are meshed again, and the double locking is completed.

[0031] The utility model discloses a working principle is: the technical personnel in the field uses, and the dental comprehensive treatment machine headrest and support are respectively through the shaft pin (not shown in the drawing) and the round hole 120 cooperation rotation connection of lock body 100 left and right sides, install the second gear disc for with the first gear disc 121 cooperation meshing on the top of the shaft pin, install the third gear disc respectively on the bottom of the shaft pin and the outer wall of locking rod 130, and the transmission connection of cooperation meshing between two third gear discs, when needing to rotate the adjustment angle of dental comprehensive treatment machine headrest and support, through pressing the lock body storehouse 110 of lock body 100 top, make the lock body storehouse 110 drive lock body 100 and first gear disc 121 move down, thereby make first gear disc 121 and second gear disc between the disengagement, subsequently press Y-shaped button, make Y-shaped button drive locking block 240 move down, thereby make locking block 240 like the inside retraction of lock hole 320, make locking block 240 can with the outer wall of locking rod 130 disengagement, subsequently can rotate dental comprehensive treatment machine headrest and support respectively through the shaft pin, after rotating any angle under the meshing state of two third gear discs, complete the adjustment, subsequently release Y-shaped button, make Y-shaped button and locking block 240 reset under the action of reset spring 250, locking block 240 moves up again, extends lock hole 320, through the arc slot 243 of limiting hole 242 outer wall with the outer wall cooperation of locking rod 130 clamping, thereby lock locking rod 130, avoid locking rod 130 rotation, complete the first heavy insurance locking, subsequently release lock body storehouse 110, make first gear disc 121 and second gear disc again meshing after lock body 100, lock body storehouse 110 reset, complete double locking, improve the convenience of equipment adjustment angle operation and the security of use.

[0032] Although the embodiments of the utility model have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and purposes of the utility model, and the scope of the utility model is defined by the claims and its equivalents.

Claims

1. A double safety lock for headrest support of dental unit, comprising a lock body (100), a through hole (150) is formed in the center of the inner wall of the lock body (100), characterized in that, The through hole (150) inner wall sliding connection Y-shaped key, the bottom of the Y-shaped key elastic connection reset spring (250), the top of the Y-shaped key is a round rod (200), the bottom of the round rod (200) is a slide rail (210), the slide rail (210) is provided with two on the left and right, the slide rail (210) inner wall is provided with a sliding groove (220), the sliding groove (220) inner wall sliding connection locking block (240), the bottom of the lock body (100) left and right outer wall fixed connection locking rod (130), the locking block (240) is connected with the outer wall of the locking rod (130).

2. The dual safety lock for headrest support of a dental unit according to claim 1, wherein The left and right sides of the lock body (100) are circular, the left and right sides of the lock body (100) are provided with a circular hole (120), and the left and right sides of the lock body (100) are fixedly connected with a first gear disc (121).

3. The dual safety lock for headrest support of a dental unit according to claim 1, wherein The two slide rails (210) are left-right symmetrical and eight-shaped, the outer wall of the locking block (240) close to the slide rail (210) is provided with a clamping block (241) matched with the sliding groove (220) for clamping.

4. The dual safety lock for headrest support of a dental unit according to claim 3, wherein The inner wall of the locking block (240) is provided with a limiting hole (242), and the outer wall of the locking block (240) away from the slide rail (210) is provided with an arc-shaped groove (243), which is used for clamping with the outer wall of the locking rod (130).

5. The dual safety lock for headrest support of a dental unit according to claim 4, wherein The bottom outer wall of the round rod (200) is fixed with a first spring limiting rod (230), and the bottom of the lock body (100) is provided with a bottom shell (300), and the inner wall of the bottom shell (300) is fixedly installed with a second spring limiting rod (310).

6. The dual safety lock for headrest support of a dental unit according to claim 5, wherein The first spring limiting rod (230) and the second spring limiting rod (310) are matched for clamping the reset spring (250), and the inner wall of the bottom shell (300) is provided with a screw hole.

7. The dual safety lock for headrest support of a dental unit according to claim 6, wherein The inner wall of the lock body (100) is provided with a second screw hole (140), and the screw (330) is screwed through the screw hole, the limiting hole (242) and the second screw hole (140).

8. The dual safety lock for headrest support of a dental unit according to claim 7, wherein The left and right sides of the bottom shell (300) are provided with a lock hole (320), the outer wall of the locking block (240) is matched with the outer wall of the locking rod (130) for clamping, and the top of the lock body (100) is fixedly connected with a lock body bin (110).

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