CN220581451U - U-shaped lock catch structure for student desk and chair - Google Patents

Abstract

The utility model discloses a U-shaped locking structure for a student desk and chair, which comprises a leg unit, wherein the leg unit comprises an upper pipe, a lower pipe and a sleeve pipe, the sleeve pipe is clamped in the lower pipe, the upper pipe is movably arranged in the lower pipe in a penetrating way through a U-shaped locking mechanism, a channel is formed in the side wall of the upper pipe along the length direction of the upper pipe, the channel extends to the bottom of the upper pipe, the U-shaped locking mechanism comprises a U-shaped clamping block and a fixing bolt, the fixing bolt penetrates through the U-shaped clamping block and extends into the lower pipe, so that the U-shaped clamping block is fixed between the upper pipe and the lower pipe, an elastic connecting piece is sleeved outside the fixing bolt, and the elastic connecting piece is positioned between the U-shaped clamping block and the lower pipe.

Description

U-shaped lock catch structure for student desk and chair

Technical Field

The utility model belongs to the technical field of desks and chairs, and particularly relates to a U-shaped lock catch structure for a student desk and chair.

Background

The desk and chair are used for students to accept education time, the heights of the traditional desk and chair are mostly fixed and cannot be adjusted, but because the heights of the students are different, the phenomenon that the shorter students and the taller students change the postures of the students to adapt to the desk and chair with the fixed heights exists, the students in the development stage can feel ache of the waist, the neck and the back due to bad sitting postures in the past, not only affects the learning efficiency, but also causes the health problems of lumbar muscle strain, humpback and the like,

the existing student desk and chair with adjustable height penetrates from the lower tube through the fixing bolt, and is locked in a mode of penetrating from the other side after penetrating through the upper tube, so that the upper tube can be stably positioned in the lower tube, the weight of students or the weight of books on the desk can be borne at the same time, a plurality of fixing bolts are needed to be used for completing the adjustment, if the students want to adjust the height of the desk and chair, the fixing bolts need to be screwed out from the upper tube one by one, the fixing bolts are troublesome and low in efficiency, the labor is repeated too much, and for students with the bodies which are not yet developed completely, the fixing bolts are required to be screwed into the lower tube after the height adjustment is completed, the fixing bolts are hard to be lost in the disassembly process, and the fixing bolts are used for fixing, so that deformation and bending can occur under the condition that the fixing bolts bear the weight of the students for a long time, and the fixing bolts are difficult to be screwed out or screwed in. There is thus a need for a solution to the above-mentioned problems.

The foregoing is not necessarily a prior art, and falls within the technical scope of the inventors.

Disclosure of Invention

In order to solve the problems, the utility model aims to provide the U-shaped lock catch structure for the student desk and chair, which is used for locking the upper tube through the cooperation of a single fixing bolt and a U-shaped clamping block, so that the time for adjusting the height and the number of bolts required to be rotated are saved.

In order to achieve the above purpose, the utility model provides a U-shaped locking structure for a student desk and chair, which is characterized by comprising a leg unit, wherein the leg unit comprises an upper pipe, a lower pipe and a sleeve, the sleeve is clamped in the lower pipe, the upper pipe is movably arranged in the lower pipe in a penetrating manner through a U-shaped locking mechanism, a channel is formed in the side wall of the upper pipe along the length direction of the upper pipe, the channel extends to the bottom of the upper pipe, the U-shaped locking mechanism comprises a U-shaped clamping block and a fixing bolt, the fixing bolt penetrates through the U-shaped clamping block and extends into the lower pipe, the U-shaped clamping block is fixed between the upper pipe and the lower pipe, an elastic connecting piece is sleeved outside the fixing bolt, and the elastic connecting piece is positioned between the U-shaped clamping block and the sleeve.

In an example, a plurality of first clamping grooves are formed in the channel along the length of the channel at intervals, through holes and second clamping grooves are formed in the side wall of the lower pipe corresponding to the channel, and two ends of the U-shaped clamping block are movably clamped in the first clamping grooves and the second clamping grooves respectively.

In one example, a height identifier corresponding to the first clamping groove is arranged on one side, away from the channel, of the upper tube.

In one example, the sleeve comprises a ring part and two half-arc parts with the same structure, the ring part is sleeved at the opening of the upper end of the lower pipe, the two half-arc parts are respectively positioned at the two sides of the lower end face of the ring part and are inserted into the lower pipe, a gap is reserved between the two half-arc parts, a fixing plate is arranged at one side, far away from the U-shaped lock catch, of the sleeve, and the fixing plate is positioned in the gap between the two half-arc parts.

In one example, a positioning bolt penetrates through the side wall of the lower tube and extends into the fixing plate of the sleeve at the side, away from the U-shaped locking mechanism, of the lower tube.

In one example, the bottom of the lower pipe is horizontally connected with a bottom rod, and two ends of the bottom rod are respectively connected with foot pads.

In one example, two groups of leg units are arranged, the two leg units are arranged in parallel, the tops of the two leg units are horizontally connected to two sides of the lower end face of the cushion plate, and any side of the cushion plate is connected with the back plate through a bent pipe.

In one example, the leg units are arranged in two groups, the two leg units are arranged in parallel, and the two leg units are respectively arranged at two sides of the desk plate, so that the height of the desk plate can freely and vertically displace along the extending direction of the leg units.

In one example, a link may be provided between the two leg units to prevent the leg units from tilting in different directions.

The U-shaped lock catch structure for the student desk and chair provided by the utility model can bring the following

The beneficial effects are that:

1. the U-shaped clamping block is matched with a first clamping groove in the channel, so that quantitative height adjustment of the leg unit is completed;

2. the structure of the U-shaped clamping block matched with the single fixing bolt replaces the traditional adjusting mode of pure bolt locking, so that the number of bolts which need to be loosened is reduced, the number of bolts which need to be screwed by a user for adjusting the height of the leg unit is reduced, and the purposes of saving the strength of the user, saving the time and the cost and improving the height adjusting efficiency are achieved;

3. through the mode with elastic connection spare setting between sleeve pipe and U type fixture block for after reverse rotation fixing bolt, U type fixture block is released elasticity potential energy by elastic connection spare and is reset automatically, can guarantee to release the locking of U type fixture block to the upper tube, can make U type fixture block still inlay in down intraductal again, prevent that the part in the U type latch mechanism from dropping, the condition that appears losing takes place.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model and do not constitute a limitation on the utility model. In the drawings:

fig. 1 is a schematic structural view of a U-shaped latch structure for a student desk and chair according to the present utility model.

Fig. 2 is a schematic diagram of a clamping structure of an upper tube and a sleeve of a U-shaped locking structure for a student desk and chair according to the present utility model.

Fig. 3 is a schematic structural view of an upper tube of a U-shaped locking structure for a student desk and chair according to the present utility model.

Fig. 4 is a schematic structural view of a lower tube of a U-shaped locking structure for a student desk and chair according to the present utility model.

Fig. 5 is a schematic structural view of a sleeve with a U-shaped locking structure for a student desk and chair according to the present utility model.

Fig. 6 is a schematic structural view of a U-shaped buckle structure of the U-shaped buckle structure for a student desk and chair according to the present utility model.

FIG. 7 is an exploded view of a U-shaped latch for a student desk and chair according to the present utility model.

Fig. 8 is a schematic structural view of the present utility model applied to a student chair.

Fig. 9 is a schematic structural view of the student desk.

Fig. 10 is a schematic view of a two leg unit assembly according to the present utility model.

Detailed Description

In order to more clearly illustrate the general inventive concept, a detailed description is given below by way of example with reference to the accompanying drawings.

In the description of the present utility model, it should be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," "circumferential," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present utility model and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; the device can be mechanically connected, electrically connected and communicated; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. In the description of the present specification, the description with reference to the terms "one aspect," "some aspects," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the aspect or example is included in at least one aspect or example of the present utility model. In this specification, the schematic representations of the above terms are not necessarily for the same scheme or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more aspects or examples.

As shown in fig. 1 to 10, the embodiment of the utility model provides a U-shaped locking structure for a student desk and chair, which comprises a leg unit 1, wherein the leg unit 1 comprises an upper pipe 11, a lower pipe 12 and a sleeve 13, the sleeve 13 is clamped and embedded in the lower pipe 12, the upper pipe 11 is movably arranged in the lower pipe 12 in a penetrating manner through a U-shaped locking mechanism 2, a groove 111 is formed in the side wall of the upper pipe 11 along the length direction of the upper pipe 11, the groove 111 extends to the bottom of the upper pipe 11, the U-shaped locking mechanism 2 comprises a U-shaped clamping block 21 and a fixing bolt 22, the fixing bolt 22 penetrates through the U-shaped clamping block 21 and extends into the lower pipe 12, the U-shaped clamping block 21 is fixed between the upper pipe 11 and the lower pipe 12, an elastic connecting piece 23 is sleeved outside the fixing bolt 22, the elastic connecting piece 23 is positioned between the U-shaped clamping block 21 and the sleeve 13, the upper pipe 11 is adjusted to reach a preset position, the fixing bolt 22 is rotated to drive the U-shaped clamping block 21 to move towards the upper pipe 11 and the lower pipe 12, meanwhile, the elastic connecting piece 23 is compressed, the elastic connecting piece 23 is stressed and the elastic connecting piece is stressed, and finally, the two ends of the U-shaped clamping block 21 are clamped and embedded in the upper pipe 11 and the lower pipe 11 are all the length of the U-shaped clamping block 11 is adjusted, and the elastic connecting piece is reset, and the elastic clamping block is reset and the upper end of the upper end and the U-shaped clamping block 21 is adjusted.

Specifically, a plurality of first clamping grooves 112 are arranged on the channel 111 along the length of the channel 111 at intervals, through holes 121 and second clamping grooves 122 which are in threaded connection with the fixing bolts 22 are formed in the side walls of the lower pipe 12 corresponding to the channel 111, and two ends of the U-shaped clamping block 21 are respectively movably clamped and embedded in the first clamping grooves 112 and the second clamping grooves 122.

Specifically, the side of the upper tube 11 far away from the channel 111 is provided with a height identifier 113 corresponding to the first clamping groove 112, so that a user can more intuitively perform height adjustment, and the step of repeated debugging is omitted.

Specifically, the sleeve 13 includes a ring portion 131 and two half-arc portions 132 with the same structure, the ring portion 131 is sleeved at the opening of the upper end of the lower tube 12, the two half-arc portions 132 are respectively located at two sides of the lower end face of the ring portion 131 and are inserted into the lower tube 12, a gap is left between the two half-arc portions 132, a fixing plate 133 is arranged at one side of the sleeve 13 away from the U-shaped lock catch, and the fixing plate 133 is located in the gap between the two half-arc portions 132.

Specifically, a positioning bolt 123 is arranged on one side of the lower pipe 12 far away from the U-shaped locking mechanism 2 in a penetrating way, and the positioning bolt 123 penetrates through the side wall of the lower pipe 12 and extends into a fixing plate 133 of the sleeve 13, and locking is completed through a nut, so that the sleeve 13 is fixedly connected with the lower pipe 12, and the sleeve 13 is prevented from being driven to displace together in the vertical displacement process of the upper pipe 11.

Specifically, the bottom of the down tube 12 is horizontally connected with the bottom rod 3, and two ends of the bottom rod 3 are respectively connected with the foot pads 31.

Specifically, the two sets of leg units 1 are arranged, the two leg units 1 are arranged in parallel, the tops of the two leg units 1 are horizontally connected to two sides of the lower end face of the cushion plate 4, and any side of the cushion plate 4 is connected with the backboard 42 through the bent pipe 41, so that the height of the cushion plate 4 is free to vertically displace along with the extending direction of the leg units 1.

Specifically, the leg units 1 are provided with two groups, the two leg units 1 are arranged in parallel, and the two leg units 1 are respectively arranged at two sides of the desk plate 5, so that the height of the desk plate 5 can freely and vertically displace along the extending direction of the leg units 1.

Specifically, a link 6 may be provided between the leg units 1, which serves to prevent the leg units 1 from being inclined in different directions.

Working principle: when the height of the leg unit is adjusted, the fixing bolt is reversely rotated, the elastic connecting piece releases elastic potential energy, the upper part of the U-shaped clamping block is driven to reset and deviate from the upper pipe, the locking between the upper pipe and the lower pipe is released, then the upper pipe is pulled according to the requirement, the upper part of the U-shaped clamping block and a first clamping groove with preset height are positioned on the same horizontal plane, then the fixing bolt is rotated, the U-shaped clamping block is driven to move towards the directions of the upper pipe and the lower pipe, meanwhile, the elastic connecting piece and the annular part of the sleeve are mutually extruded, the elastic connecting piece is stressed and stores energy, the elastic connecting piece is finally screwed in the through hole, the upper end of the U-shaped clamping block is clamped in the corresponding first clamping groove in the upper pipe, the length adjustment of the leg unit is completed, and in the process, the pipe diameter of the upper pipe is smaller than that of the lower pipe, the lower end of the U-shaped clamping block is always clamped in the lower pipe, the U-shaped clamping block is prevented from falling off from the whole pipe body, and the height of the sitting plate or the desk is completed.

In this specification, each embodiment is described in a progressive manner, and identical and similar parts of each embodiment are all referred to each other, and each embodiment mainly describes differences from other embodiments. In particular, for system embodiments, since they are substantially similar to method embodiments, the description is relatively simple, as relevant to see a section of the description of method embodiments.

The foregoing is merely exemplary of the present utility model and is not intended to limit the present utility model. Various modifications and variations of the present utility model will be apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the utility model are to be included in the scope of the claims of the present utility model.

Claims (9)

1. A U-shaped lock catch structure for a student desk and chair is characterized by comprising a leg unit, wherein the leg unit comprises an upper pipe, a lower pipe and a sleeve pipe, the sleeve pipe is clamped and embedded in the lower pipe, the upper pipe is movably penetrated in the lower pipe through a U-shaped lock catch mechanism, a channel is formed in the side wall of the upper pipe along the length direction of the upper pipe, the channel extends to the bottom of the upper pipe, the U-shaped lock catch mechanism comprises a U-shaped clamping block and a fixing bolt, the fixing bolt penetrates through the U-shaped clamping block and extends into the lower pipe, the U-shaped clamping block is fixed between the upper pipe and the lower pipe, an elastic connecting piece is sleeved outside the fixing bolt, and the elastic connecting piece is positioned between the U-shaped clamping block and the lower pipe.

2. The U-shaped lock catch structure for a student desk and chair according to claim 1, wherein a plurality of first clamping grooves which are horizontally arranged are formed in the groove channel at intervals along the length of the groove channel, through holes and second clamping grooves are formed in the side wall of the lower pipe corresponding to the groove channel, and two ends of the U-shaped clamping block are movably clamped in the first clamping grooves and the second clamping grooves respectively.

3. The U-shaped locking structure for a student desk and chair according to claim 2, wherein a height mark corresponding to the first clamping groove is arranged on one side of the upper tube away from the groove.

4. The U-shaped lock catch structure for a student desk and chair according to claim 1, wherein the sleeve comprises a ring part and two half-arc parts with the same structure, the ring part is sleeved at the opening of the upper end of the lower pipe, the two half-arc parts are respectively positioned at two sides of the lower end surface of the ring part and are inserted into the lower pipe, a gap is reserved between the two half-arc parts, a fixing plate is arranged at one side of the sleeve away from the U-shaped lock catch, and the fixing plate is positioned in the gap between the two half-arc parts.

5. The U-shaped locking structure for a student desk and chair of claim 4 wherein a positioning bolt is provided through a side of said down tube remote from said U-shaped locking mechanism, said positioning bolt extending through a side wall of said down tube and into said securing plate of said sleeve.

6. The U-shaped locking structure for a student desk and chair according to claim 1, wherein the bottom of the lower tube is horizontally connected with a bottom rod, and two ends of the bottom rod are respectively connected with foot pads.

7. The U-shaped lock catch structure for a student desk and chair according to claim 1, wherein two groups of leg units are arranged, the two leg units are arranged in parallel, the tops of the two leg units are horizontally connected to two sides of the lower end face of a cushion plate, and any side of the cushion plate is connected with a back plate through a bent pipe.

8. The U-shaped locking structure for a student desk and chair according to claim 1, wherein two groups of leg units are arranged, the two leg units are arranged in parallel, and the two leg units are respectively arranged on two sides of the desk plate, so that the height of the desk plate can freely and vertically displace along the extending direction of the leg units.

9. The U-shaped locking structure for a student desk and chair according to any one of claims 7 or 8, wherein a connecting rod is provided between the two leg units, which serves to prevent the leg units from tilting in different directions.