CN213664235U - Lifting type learning chair - Google Patents
Lifting type learning chair Download PDFInfo
- Publication number
- CN213664235U CN213664235U CN202021889026.3U CN202021889026U CN213664235U CN 213664235 U CN213664235 U CN 213664235U CN 202021889026 U CN202021889026 U CN 202021889026U CN 213664235 U CN213664235 U CN 213664235U
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- Prior art keywords
- supporting
- guide cylinder
- cylinder
- lifting rod
- chair
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- 230000007246 mechanism Effects 0.000 claims abstract description 30
- 230000005540 biological transmission Effects 0.000 claims abstract description 26
- 230000006872 improvement Effects 0.000 description 5
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 4
- 235000017491 Bambusa tulda Nutrition 0.000 description 4
- 241001330002 Bambuseae Species 0.000 description 4
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 4
- 239000011425 bamboo Substances 0.000 description 4
- 230000006870 function Effects 0.000 description 4
- 208000027418 Wounds and injury Diseases 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 208000014674 injury Diseases 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
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Abstract
The utility model relates to an over-and-under type study chair belongs to study cultural and educational articles for use technical field. Comprises a base frame, a chair seat plate and a backrest plate; the base frame is connected with the chair seat plate by using a lifting adjusting mechanism; the lifting adjusting mechanism comprises a supporting guide cylinder, a lifting rod which is arranged in the supporting guide cylinder and the upper end of which is fixedly provided with a chair plate, and a power mechanism which drives the lifting rod to move up and down; the lower end of the supporting guide cylinder is fixedly connected with the base frame; the lifting rod is inserted in the supporting guide cylinder, and a rack segment is integrally arranged on one end face of the lifting rod; the power mechanism comprises a transmission shaft, a worm wheel and a driving shaft, wherein the two ends of the transmission shaft are fixedly provided with a driving gear through key connection, the worm wheel is fixedly arranged in the middle of the transmission shaft, and the driving shaft is provided with a worm section; the transmission shaft and the driving shaft are sleeved with a supporting protection cylinder, the end part of the supporting protection cylinder is fixedly connected with the supporting guide cylinder, the two ends of the transmission shaft are hinged with the supporting guide cylinder through bearings, and the two ends of the driving shaft are hinged with the supporting protection cylinder through bearings. The utility model is convenient to use.
Description
Technical Field
The utility model relates to an over-and-under type study chair belongs to study cultural and educational articles for use technical field.
Background
The desk and chair is an important article for study, culture and education in class, and students sit on the chair and study on the desk. With the continuous development, the requirements for desks and chairs are gradually increased. As students rise different from each other, the height of the desk and chair needs to be properly adjusted to meet the requirements of different students.
However, the height of the existing desk cannot be adjusted generally. Although some tables and chairs can be adjusted in height, the structure is too simple, and the adjustment is inconvenient. Generally, a connecting rod and a connecting cylinder are used, and the connecting rod is inserted into the connecting cylinder and fastened by a fastening bolt on the outer side of the connecting cylinder. This structure is not only unstable, still has the inconvenient shortcoming of regulation, needs two people to lift the table simultaneously then two people fix both ends simultaneously and just can realize altitude mixture control.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a lifting type study chair convenient to adjust.
In order to realize the purpose, the utility model discloses a technical scheme is:
a lifting learning chair comprises a base frame, a chair seat plate and a backrest plate, wherein the backrest plate is fixed on one side of the chair seat plate through a support rod; the base frame is connected with the chair seat plate by using a lifting adjusting mechanism; the lifting adjusting mechanism comprises a supporting guide cylinder, a lifting rod which is arranged in the supporting guide cylinder and the upper end of which is fixedly provided with a chair plate, and a power mechanism which drives the lifting rod to move up and down; the lower end of the supporting guide cylinder is fixedly connected with the base frame; the lifting rod is inserted in the supporting guide cylinder, and a rack segment is integrally arranged on one end face of the lifting rod; the power mechanism comprises a transmission shaft, a worm wheel and a driving shaft, wherein the two ends of the transmission shaft are fixedly provided with a driving gear through key connection, the worm wheel is fixedly arranged in the middle of the transmission shaft, and the driving shaft is provided with a worm section; the driving gear is meshed with the rack section, and the worm section is meshed with the worm wheel; the outer sides of the transmission shaft and the driving shaft are sleeved with a supporting and protecting cylinder, the end part of the supporting and protecting cylinder is fixedly connected with the supporting and guiding cylinder, two ends of the transmission shaft are hinged with the supporting and guiding cylinder through bearings, and two ends of the driving shaft are hinged with the supporting and protecting cylinder through bearings; one end face of the driving shaft is provided with a connecting shaft structure, and a driving handle is detachably arranged through the connecting shaft structure.
The further improvement is that: the connecting shaft structure comprises a square groove arranged at the end part of the driving shaft and a square head arranged at the end part of the driving handle; the square head is inserted into the square groove to be connected in a matched mode.
The further improvement is that: the upper end and the lower end of the lifting rod are not provided with rack segments and are arranged in a polished rod structure; the upper end of the supporting guide cylinder is closed by an end cover, and a through hole for the polished rod of the lifting rod to pass through is arranged on the end cover.
The further improvement is that: the lower end of the supporting protection cylinder is detachably provided with a cover plate.
The further improvement is that: the lower extreme of supporting the protection section of thick bamboo uses the bolt setting to dismantle and sets up the apron.
The further improvement is that: the inner hole of the supporting guide cylinder is a rectangular hole, the lifting rod is a rectangular rod, and a rack section is arranged on one end face in the width direction; the thickness of the lifting rod is consistent with the width of the inner hole of the supporting guide cylinder.
Since the technical scheme is used, the utility model discloses the technological effect who gains has:
the utility model provides a novel lifting adjusting mechanism for the lifting learning chair to realize the height adjustment of the chair seat plate, the lifting adjusting mechanism is formed by matching a worm-gear pair and a rack-and-pinion pair, the worm of the worm-gear pair is a driving part, and the worm wheel is a driven part; the worm can drive the worm wheel to rotate, and the worm wheel cannot drive the worm, so that a self-locking effect is realized; the lifting adjusting mechanism can be stably, reliably and conveniently parked at any height position.
The utility model discloses set up the support protection section of thick bamboo at transmission shaft and drive shaft outside suit, keep apart protection with both. Simultaneously, can prevent that the student from direct contact to this mechanism, avoid causing mechanical injury. The two ends of the supporting protection cylinder are respectively fixedly connected with the supporting guide cylinder, and the reinforcing effect can be achieved.
The utility model discloses rational in infrastructure, convenient to use, reliable and stable.
Drawings
Fig. 1 is a perspective view of the present invention;
FIG. 2 is a schematic view of the lift adjustment mechanism of the present invention;
the chair comprises a chair seat plate 1, a chair back plate 2, a chair back plate 3, a base frame 4, a support rod 5, a support guide cylinder 6, a lifting rod 7, a rack section 8, a transmission shaft 9, a worm wheel 10, a worm section 11, a driving shaft 12, a driving handle 13, an end cover 14, a support protection cylinder 15 and a driving gear.
Detailed Description
In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand, the present invention is further described below with reference to the following embodiments.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "connected," and the like are to be construed broadly, and for example, "connected" may be either fixedly connected or detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
As shown in fig. 1, the lifting type learning chair is a newly designed lifting type learning chair, which is based on the existing learning chair and comprises a base frame 3, a chair seat plate 1 and a backrest plate 2. Wherein, the backrest plate 2 is fixed at one side of the chair seat plate 1 through a support rod 4. The base frame 3 is connected with the chair seat plate 1 by a lifting adjusting mechanism. The utility model discloses mainly improve lift adjustment mechanism.
As shown in fig. 1 and 2, the lifting adjustment mechanism includes a support guide cylinder 5, a lifting rod 6, and a power mechanism. The supporting guide cylinder 5 is matched with the lifting rod 6 for use, the supporting guide cylinder 5 is hollow, and the lifting rod 6 is inserted into the supporting guide cylinder 5. The inner hole of the supporting guide cylinder 5 is generally set as a rectangular hole, and the lifting rod 6 is set as a rectangular rod; the thickness of the lifting rod 6 is consistent with the width of the inner hole of the supporting guide cylinder 5. The lower end of the support guide cylinder 5 is fixedly mounted on the base frame 3. The upper end surface of the lifting rod 6 is fixedly provided with a chair seat plate 1. The lifting adjusting mechanism is provided with two sets of supporting guide cylinders 5 and lifting rods 6 which are matched for use. The power mechanism is used for driving the lifting rod 6 to move up and down along the supporting guide cylinder 5. And a support protection cylinder 14 is sleeved outside the transmission shaft 8 and the driving shaft 11, and the end parts of the two ends of the support protection cylinder are fixedly connected with the support guide cylinder 5. The supporting protection cylinder 5 mainly has two functions, one is to isolate and protect the driving shaft 8 and the driving shaft 11, and the other is to provide support for the driving shaft 11, and two ends of the driving shaft 11 are hinged with the supporting protection cylinder 14 by using bearings. The support and guard cylinder 14 is typically made of a high strength plastic.
The utility model provides a power unit uses is that worm gear is vice to form with the vice cooperation of rack and pinion, and wherein worm gear is vice to have the function of auto-lock, and security and regulation nature are better.
As shown in fig. 2, the power mechanism of the present invention is a mechanism for driving the lifting rod 6 to move up and down, and the power mechanism mainly includes a transmission shaft 8 and a driving shaft 11, and the transmission shaft 8 and the driving roller shaft 11 are arranged at 90 degrees in a staggered manner. The two ends of the transmission shaft 8 are fixedly provided with a driving gear 15 by key connection, and the middle part of the transmission shaft 8 is fixedly connected with a worm wheel 9. A worm section 10 is fixedly connected to the middle of the drive shaft 11, and a rack section is integrally formed on the end face of one end of the lifting rod 6. During assembly, the driving gear 15 is meshed with the rack section 7, and the worm section 10 is meshed with the worm wheel 9 to form a complete power mechanism, so that power transmission can be realized. The driving shaft 11 drives the worm section 10 to rotate, the worm section 10 transmits power to drive the worm wheel 9 to rotate, the worm wheel 9 drives the driving gear 15 to rotate, and the driving gear 15 drives the rack section 7 and drives the lifting rod 6 to move up and down. The worm wheel and the worm are matched to change the power transmission direction.
As shown in fig. 2, the utility model provides a transmission shaft 8's both ends use the bearing to articulate with supporting guide cylinder 5, and drive shaft 11 both ends use the bearing to articulate with supporting a protection section of thick bamboo. The transmission shaft 8 and the drive shaft 11 can freely and smoothly rotate. Wherein, the one end of drive shaft 11 passes support guide cylinder 5 and outwards extends to set up axle structure at the terminal surface of outer end, set up drive handle 12 through axle structure is dismantled. In a specific implementation, the coupling structure comprises a square groove arranged at the end part of the driving shaft 11 and a square head arranged at the end part of the driving handle, and the square head is inserted into the square groove to be matched and connected when in use. When not in use, the driving handle 12 is taken down.
The utility model discloses in concrete implementation, be with the one section side of the mid portion of lifter 6 set up the rack section, and the upper end of lifter 6 and the part that the lower extreme did not set up the rack section become the polished rod structure setting. The upper end of the support guide cylinder 5 is closed with an end cap 13, and a through hole through which the polish rod of the lift lever 6 passes is provided on the end cap 13. The end cover 13 and the supporting guide cylinder 5 are detachably connected by adopting a screw or bolt mode.
The lifting adjusting mechanism of the lifting learning chair is fine-tuned to the height of the chair seat plate, and the adjusting range is controlled to be 3-12 cm. The lifting learning chair can set the supporting guide cylinders 5 to different heights to distinguish models, so that the requirements of different students for the height of a desk can be met. The supporting guide cylinder 5 is divided into three grades of high, middle and low according to the height, and then is matched with the fine adjustment of the lifting adjusting mechanism.
The utility model discloses, can keep apart protection with both at the support protection section of thick bamboo 14 that transmission shaft 8 and 11 outside suit set up of drive shaft. Simultaneously, can prevent that the student from direct contact to this mechanism, avoid causing mechanical injury. Further, a detachable cover plate is provided on the lower end surface of the supporting shield cylinder 14, and the detachable cover plate is generally fixedly mounted by using bolts. When the maintenance is needed, the cover plate is taken down. The two ends of the supporting and protecting cylinder 14 are respectively fixedly connected with the supporting and guiding cylinder 5, and the reinforcing effect can be achieved.
The utility model discloses a worm gear pair and rack and pinion cooperation form power unit and adjust the height of chair seat board. Because the worm gear pair has the self-locking function, the lifting learning chair has better safety and stability. The utility model discloses an adjustability is good, and safety and stability, performance are good.
The basic principles and the main features of the invention and the advantages of the invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (6)
1. A lifting learning chair comprises a base frame (3), a chair seat plate (1) and a backrest plate (2), wherein the backrest plate (2) is fixed on one side of the chair seat plate (1) through a support rod (4); the base frame (3) is connected with the chair seat plate (1) by a lifting adjusting mechanism; the method is characterized in that: the lifting adjusting mechanism comprises a supporting guide cylinder (5), a lifting rod (6) which is arranged in the supporting guide cylinder (5) and the upper end of which is fixedly provided with the chair seat plate (1), and a power mechanism which drives the lifting rod (6) to move up and down; the lower end of the supporting guide cylinder (5) is fixedly connected with the base frame (3); the lifting rod (6) is inserted in the supporting guide cylinder (5) and one end face of the lifting rod is integrally provided with a rack section (7); the power mechanism comprises a transmission shaft (8) with two ends fixedly provided with a driving gear (15) through key connection, a worm wheel (9) fixedly arranged in the middle of the transmission shaft (8) and a driving shaft (11) provided with a worm section (10); the driving gear (15) is meshed with the rack section (7), and the worm section (10) is meshed with the worm wheel (9); a supporting and protecting cylinder (14) with the end part fixedly connected with the supporting and guiding cylinder (5) is sleeved outside the transmission shaft (8) and the driving shaft (11), two ends of the transmission shaft (8) are hinged with the supporting and guiding cylinder (5) by using bearings, and two ends of the driving shaft (11) are hinged with the supporting and protecting cylinder by using bearings; one end face of the driving shaft (11) is provided with a connecting shaft structure, and a driving handle (12) is detachably arranged through the connecting shaft structure.
2. The lift-type learning chair of claim 1, wherein: the connecting shaft structure comprises a square groove arranged at the end part of the driving shaft (11) and a square head arranged at the end part of the driving handle (12); the square head is inserted into the square groove to be connected in a matched mode.
3. The lift-type learning chair of claim 1, wherein: the upper end and the lower end of the lifting rod (6) are not provided with the rack sections and are arranged in a polished rod structure; the upper end of the supporting guide cylinder (5) is closed by an end cover (13), and a through hole for a polish rod of the lifting rod (6) to pass through is arranged on the end cover (13).
4. The lift-type learning chair of claim 1, wherein: the lower end of the supporting and protecting cylinder (14) is detachably provided with a cover plate.
5. The lift learning chair of claim 4, wherein: the lower end of the supporting protection cylinder (14) is detachably provided with a cover plate by using bolts.
6. The lift-type learning chair of any one of claims 1 to 5, wherein: an inner hole of the support guide cylinder (5) is a rectangular hole, the lifting rod (6) is a rectangular rod, and a rack section (7) is arranged on one end face in the width direction; the thickness of the lifting rod (6) is consistent with the width of the inner hole of the supporting guide cylinder (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021889026.3U CN213664235U (en) | 2020-09-02 | 2020-09-02 | Lifting type learning chair |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021889026.3U CN213664235U (en) | 2020-09-02 | 2020-09-02 | Lifting type learning chair |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213664235U true CN213664235U (en) | 2021-07-13 |
Family
ID=76746121
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021889026.3U Expired - Fee Related CN213664235U (en) | 2020-09-02 | 2020-09-02 | Lifting type learning chair |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213664235U (en) |
-
2020
- 2020-09-02 CN CN202021889026.3U patent/CN213664235U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210713 |