Self-locking structure and lifter of lifting table and chair

Abstract

The utility model belongs to the technical field of lifting of tables and chairs, in particular to a self-locking structure and a lifter of a lifting table and chair, which comprises a knob and a synchronizing wheel I. The lower side of the knob is fixed with the upper side of the synchronizing wheel I through a central rod, and the outer side of the synchronizing wheel I is butted with the middle of a synchronous belt. According to the self-locking structure and the lifter of the lifting table and chair, when the height of the lifting table body needs to be adjusted through the lifter, a rotary knob is rotated, an inner solenoid drives a connecting pipe to be lifted, the table top of the lifting table body is adjusted to the proper height, and when the connecting pipe is lifted, a connecting pad is exposed on the inner side of a connecting spring; and the connecting pipe pulls the connecting spring to extend at the same time, so that the connecting spring and the connecting pad are extruded, the friction force between the connecting spring and the connecting pad plays a self-locking role, the lifting structure of the lifter is prevented from accidentally displacing, and a user is not prone to being injured accidentally when using the lifting table main body.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of table and chair lifting, in particular to a self-locking structure and lifter of lifting table and chair. BACKGROUND

[0002] The lifting table and chair is a table and chair combination capable of adjusting height, and the lifting table can adjust the height of the table top according to the height or sitting posture requirement of the user through the lifter, so as to maintain a natural and comfortable sitting posture, reduce the pressure on the spine and shoulder, avoid fatigue caused by improper sitting posture, improve work efficiency and reduce health problems caused by long-time sitting posture, and is usually used in office, learning or home environment to provide more comfortable and flexible use experience.

[0003] After the lifting table and chair is adjusted to a suitable height through the lifter, the lifting structure of the lifter is easily displaced accidentally when affected by external force or other factors during use, such as collision or vibration, so that the height of the table top or seat is easily changed, the use experience is affected, the equipment is unbalanced, and the user is easily injured accidentally, therefore, the self-locking structure and lifter of the lifting table and chair are provided. CONTENT OF THE UTILITY MODEL

[0004] The utility model aims at providing a self-locking structure and lifter of lifting table and chair to solve the problem that the lifting structure of the lifter is easily displaced accidentally and the height of the table top or seat is easily changed, and the user is easily injured accidentally.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a self-locking structure, including knob and synchronous wheel one, the downside of knob is fixed with the upside of synchronous wheel one through center rod, the outside of synchronous wheel one is opposite to the middle part of synchronous belt, the both ends of synchronous belt are respectively butt-jointed with synchronous wheel two, the upside of synchronous wheel two is fixed with the lower end of screw rod through center rod, one end of screw rod is sequentially butt-jointed with inner screw pipe and connecting pipe, and the inner screw pipe is fixed with the connecting pipe, the inside of screw rod is equipped with accommodation groove.

[0006] Preferably, the accommodation groove is opposite to one end of the butt joint rod, and the outside of the butt joint rod is bonded with a connecting pad.

[0007] Preferably, the upper end of the butt joint rod is fixed with the lower end of the connecting rod, and the side close to the butt joint rod of the screw rod is fixed with the lower end of the supporting rod.

[0008] Preferably, the upper end of the supporting rod is fixed with the sliding plate, and the side close to the sliding plate of the connecting pipe is equipped with a sliding groove.

[0009] Preferably, the sliding plate is slidingly connected with the sliding groove, and the inside of the sliding plate is equipped with a through groove.

[0010] Preferably, the upper end of the connecting rod is fixed to the inner side of the connecting pipe through the inner side of the through slot.

[0011] Preferably, the lower end of the connecting spring is fixed to the upper side of the screw rod, and the upper end of the connecting spring is fixed to the inner side of the connecting pipe through the inner side of the through slot.

[0012] Preferably, the first and second synchronous wheels are in engagement with the synchronous belt, and the screw rod is in threaded connection with the inner screw pipe.

[0013] Preferably, the connecting pad is made of deformable rubber material, and the sliding plate is matched with the sliding groove.

[0014] A lifter of a lifting table and chair, comprising a lifting table main body, wherein the lifting table main body is provided with the self-locking structure.

[0015] Compared with the prior art, the self-locking structure and the lifter of the lifting table and chair have the following beneficial effects: when the lifting table main body needs to be adjusted in height by the lifter, the knob is rotated to drive the connecting pipe to be lifted by the inner screw pipe, so that the tabletop of the lifting table main body is adjusted to a suitable height; when the connecting pipe is lifted, the connecting pad is exposed to the inner side of the connecting spring, and the connecting pipe simultaneously pulls the connecting spring to be stretched, so that the connecting spring and the connecting pad are extruded, thereby the friction force between the connecting spring and the connecting pad plays a self-locking role, thereby preventing the lifting structure of the lifter from being accidentally displaced, and preventing the user from being accidentally injured when using the lifting table main body. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a three-dimensional structure schematic view of the lifter of the lifting table and chair and the knob.

[0017] Figure 2 It is a schematic view of the knob, the first synchronous wheel and the connecting structure thereof.

[0018] Figure 3 It is a three-dimensional structure schematic view of the lifter of the lifting table and chair and the knob. Figure 2 It is a local enlarged structure schematic view of position A in the lifter of the lifting table and chair.

[0019] Figure 4 It is a three-dimensional structure schematic view of the lifter of the lifting table and chair and the knob. Figure 2 It is a local enlarged structure schematic view of position B in the lifter of the lifting table and chair.

[0020] Figure 5 It is a three-dimensional structure schematic view of the lifter of the lifting table and chair and the knob. Figure 2 It is a local enlarged structure schematic view of position C in the lifter of the lifting table and chair.

[0021] In the figure: 1, lifting table main body; 2, knob; 201, synchronous wheel one; 202, synchronous belt; 203, synchronous wheel two; 204, screw rod; 205, inner screw pipe; 206, connecting pipe; 207, installation groove; 208, butt joint rod; 209, connecting pad; 210, connecting rod; 211, support rod; 212, sliding plate; 2121, sliding groove; 213, through groove; 214, connecting spring. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0023] Please refer to Figures 1-5 The utility model provides a kind of technical scheme: a self-locking structure, including knob 2 and synchronous wheel one 201, the downside of knob 2 is fixed with the upside of synchronous wheel one 201 by center rod, the outside of synchronous wheel one 201 is opposite with the middle part of synchronous belt 202, the two ends of synchronous belt 202 are respectively butt joint with synchronous wheel two 203, the upside of synchronous wheel two 203 is fixed with the lower end of screw rod 204 by center rod, one end of screw rod 204 is sequentially butt joint with inner screw pipe 205 and connecting pipe 206, and inner screw pipe 205 is fixed with connecting pipe 206, installation groove 207 is set in the inside of screw rod 204, installation groove 207 is opposite with one end of butt joint rod 208, and the outside of butt joint rod 208 is bonded with connecting pad 209, the upper end of butt joint rod 208 is fixed with the lower end of connecting rod 210, the side of screw rod 204 close to butt joint rod 208 is fixed with the lower end of support rod 211, the upper end of support rod 211 is fixed with sliding plate 212, one side of connecting pipe 206 close to sliding plate 212 is provided with sliding groove 2121, sliding plate 212 is slidably connected with sliding groove 2121, and through groove 213 is set in the inside of sliding plate 212, the upper end of connecting rod 210 is fixed with the inside of connecting pipe 206 by penetrating the inside of through groove 213, and connecting spring 214 is sleeved on the outside of connecting rod 210, the lower end of connecting spring 214 is fixed with the upside of screw rod 204, and the upper end of connecting spring 214 is fixed with the inside of connecting pipe 206 by penetrating the inside of through groove 213, synchronous wheel one 201 and synchronous wheel two 203 are engaged with synchronous belt 202, screw rod 204 is threadedly connected with inner screw pipe 205, connecting pad 209 adopts deformable rubber material, and sliding plate 212 is matched with sliding groove 2121.

[0024] In specific implementation, according to Figures 1-5When the lifting table body 1 needs to be adjusted in height by the lifter, the knob 2 is rotated to drive the synchronous wheel one 201 to rotate. At this time, the synchronous wheel one 201 and the synchronous wheel two 203 are in engagement with the synchronous belt 202, so that the synchronous wheel one 201 drives the synchronous wheel two 203 to rotate simultaneously through the synchronous belt 202. At this time, the two screw rods 204 rotate in the same direction, and the inner screw pipe 205 is connected with the screw rod 204 in a threaded manner, so that the inner screw pipe 205 moves upward along the screw rod 204. At this time, the connecting pipe 206 is lifted by the inner screw pipe 205, and the connecting rod 210 is lifted by the connecting pipe 206. The sliding groove 2121 moves with the connecting pipe 206, so that the sliding plate 212 can slide along the sliding groove 2121. The sliding plate 212 and the sliding groove 2121 are matched, so as to enhance the stability of the upward movement of the connecting pipe 206. The connecting rod 210 and the connecting spring 214 move in the inner side of the through slot 213. When the connecting rod 210 moves upward, the connecting pad 209 adhered to the outer side of the connecting rod 210 moves out of the mounting groove 207, and the connecting pad 209 is exposed to the inner side of the connecting spring 214. When the connecting pipe 206 moves upward, the connecting pipe 206 simultaneously stretches the connecting spring 214. At this time, the connecting spring 214 contracts inward, so that the connecting spring 214 and the connecting pad 209 are extruded, so as to make the friction between the connecting spring 214 and the connecting pad 209 play a self-locking role, and enhance the supporting effect of the connecting pipe 206 on the connecting rod 210 and the connecting rod 208. Thus, the lifting structure of the lifter is prevented from moving accidentally, and the user is not easily injured by using the lifting table body 1.

[0025] A lifter of a lifting table and chair, comprising a lifting table body 1, and a self-locking structure installed on the lifting table body 1.

[0026] In summary, when the lifting table body 1 needs to be adjusted in height by the lifter, the knob 2 is rotated to drive the inner screw pipe 205 to lift the connecting pipe 206, so that the tabletop of the lifting table body 1 is adjusted to a suitable height. When the connecting pipe 206 is lifted to drive the connecting rod 210 to move upward, the sliding plate 212 can slide along the sliding groove 2121, so as to enhance the stability of the upward movement of the connecting pipe 206. When the connecting rod 210 moves upward, the connecting pad 209 is exposed to the inner side of the connecting spring 214, and the connecting pipe 206 simultaneously stretches the connecting spring 214 upward. At this time, the connecting spring 214 contracts inward, so that the connecting spring 214 and the connecting pad 209 are extruded, so as to make the friction between the connecting spring 214 and the connecting pad 209 play a self-locking role, and prevent the lifting structure of the lifter from moving accidentally. Thus, the user is not easily injured by using the lifting table body 1. The contents not described in detail in the description belong to the prior art known to those skilled in the art.

[0027] Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments or make equivalent replacement to part of the technical features, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A self-locking structure, comprising a knob (2) and a synchronous wheel I (201), characterized in that: the lower side of the knob (2) is fixed with the upper side of the synchronous wheel I (201) through a center rod, the outer side of the synchronous wheel I (201) is connected with the middle part of a synchronous belt (202), the two ends of the synchronous belt (202) are respectively connected with a synchronous wheel II (203), the upper side of the synchronous wheel II (203) is fixed with the lower end of a screw rod (204) through a center rod, one end of the screw rod (204) is sequentially connected with an inner screw pipe (205) and a connecting pipe (206), and the inner screw pipe (205) and the connecting pipe (206) are fixed, and the inner side of the screw rod (204) is provided with a mounting groove (207).

2. A self-locking structure according to claim 1, characterized in that: The mounting groove (207) is connected with one end of a connecting rod (208), and the outer side of the connecting rod (208) is bonded with a connecting pad (209).

3. A self-locking structure according to claim 2, wherein: The upper end of the connecting rod (208) is fixed with the lower end of a connecting rod (210), and the side of the screw rod (204) close to the connecting rod (208) is fixed with the lower end of a supporting rod (211).

4. A self-locking structure according to claim 3, wherein: The upper end of the supporting rod (211) is fixed with a sliding plate (212), and the side of the connecting pipe (206) close to the sliding plate (212) is provided with a sliding groove (2121).

5. A self-locking structure according to claim 4, wherein: The sliding plate (212) is slidingly connected with the sliding groove (2121), and the inner side of the sliding plate (212) is provided with a through groove (213).

6. A self-locking structure according to claim 3, wherein: The upper end of the connecting rod (210) penetrates through the inner side of the through groove (213) and is fixed with the inner side of the connecting pipe (206), and the outer side of the connecting rod (210) is sleeved with a connecting spring (214).

7. A self-locking structure according to claim 6, wherein: The lower end of the connecting spring (214) is fixed with the upper side of the screw rod (204), and the upper end of the connecting spring (214) penetrates through the inner side of the through groove (213) and is fixed with the inner side of the connecting pipe (206).

8. The self-locking structure of claim 1, wherein: The synchronous wheel I (201) and the synchronous wheel II (203) are meshingly connected with the synchronous belt (202), and the screw rod (204) is threadedly connected with the inner screw pipe (205).

9. The self-locking structure of claim 4, wherein: The connecting pad (209) is made of deformable rubber material, and the sliding plate (212) is matched with the sliding groove (2121).

10. A riser of a lift table chair comprising a lift table main body (1), characterized by, The lifting table body (1) is provided with the self-locking structure according to any one of claims 1-9.

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