Patent Application
20240099465
This application claims the priority benefit of China application serial no. 202222575706.3, filed on Sept. 28, 2022. The entirety of the above-mentioned patent application is hereby incorporated by reference herein and made a part of this specification.
The present disclosure relates to the technical field of chairs, in particular to a quick-assembly structure for a chassis and a back frame of a chair and a chair.
With the development of science and technology, people have the increasingly high pursuit for the shapes of chairs. At present, some chairs on the market mainly comprise bases and chair backs, wherein each of the bases comprises a chassis and a seat cushion mounted on the chassis, each of the chair backs comprises a back frame and a back cushion mounted on the back frame, and the back frame is connected to the chassis.
With regard to the existing chairs, in order to facilitate packaging and transportation, the back frames and the chassis are usually connected in such a connection manner that screws fit holes, thereby ensuring the detachable connection of the back frames and the chassis. For the chairs with the back frames and the chassis assembled by means of the screws, although mutual assembly and disassembly can be achieved, in the actual application process, the phenomena of deviations of the holes and slippage of the screws appear easily, so that after users receive the chairs, it is difficult for the users to assemble the back frames and the chassis smoothly. In addition, with the adoption of the screw mounting manner, the assembly process is complex and is not convenient enough, and thus there is room for improvement.
In order to solve at least one technical problem mentioned in the background, the present disclosure provides a quick-assembly structure for a chassis and a back frame of a chair.
To achieve the above-mentioned purposes, the present disclosure provides the following technical solution:
Compared with the prior art, the solution has the advantages as follows:
It can be seen therefrom that in the solution, the back frame and the chassis are assembled in an inserting fit manner, compared with a traditional manner for assembly with screws fitting holes, the quick-assembly structure has the advantages as follows: firstly, the quick-assembly structure is easier and more convenient to operate; and secondly, the problem that assembly cannot be realized due to slippage of the screws or deviations of the holes can be avoided. In a word, the user experience can be improved.
Preferably, the locking block comprises a bottom end surface, and a front end of the bottom end surface constitutes the locking end; and a rear side surface of the bump constitutes the abutting surface.
Preferably, a movement direction of the locking block is inclined relative to the extension direction of the inserting port, each of the bottom end surface of the inserting portion and the abutting surface of the bump is of a slope structure, and a plane where the bottom end surface is located is perpendicular to a plane where the abutting surface is located.
Preferably, the inserting portion is provided on the back frame, and the inserting port is provided on the chassis.
Preferably, the chassis comprises an extension portion and a mounting block, the extension portion is connected to the mounting block, and the inserting port is enclosed between the extension portion and the mounting block; and the locking block and the elastic member are arranged on the mounting block.
Preferably, a sliding groove with one end in communication with the inserting port is provided in the mounting block, the locking block is slidably arranged in the sliding groove, and the elastic member is arranged in the sliding groove.
Preferably, the elastic member comprises a spring or an elastic sheet.
Preferably, the locking block comprises an extension section; and one end of the extension section extends out of the top of the mounting block to form a stress portion, or one end of the extension section is connected to a connecting member, and the connecting member at least partially extends out of the top of the mounting block to form a stress portion.
Preferably, a front side wall of the bump is of a slope structure so as to constitute a guide surface.
The present disclosure further provides a chair, comprising a chassis and a back frame, wherein the chassis and the back frame are assembled by means of the above-mentioned
quick-assembly structure. Other advantages and effects of the present disclosure are illustrated in detail in the detailed description of the embodiments.
The technical solutions in embodiments of the present disclosure will be described clearly and completely below. Obviously, the described embodiments are only part of embodiments of the present disclosure, not all of them. On the basis of the embodiments of the present disclosure, all other embodiments obtained by those of ordinary skill in the art without involving any inventive effort should fall within the scope of protection of the present disclosure.
Reference is made to
In view of
As shown in
In an assembled state, the bump 31 is inserted into the inserting port 40 along with the inserting portion 3, the locking block 5 is pushed by means of an elastic force of the elastic member to enter a locking position, and at the locking position, the locking end enters the inserting port 40 and abuts against the abutting surface 311 of the bump 31 so as to restrict the inserting portion 3 from being pulled out in a direction opposite to an inserting direction thereof. It is understandable that the inserting portion 3 has a maximum insertion stroke, that is, after being inserted by the maximum stroke, the inserting portion 3 cannot be continuously inserted forwards into the inserting port 40, for example, a front end of the inserting port 40 is provided with a limiting portion for restricting the maximum insertion stroke of the inserting portion 3, or a bent angle is formed in the middle of the inserting portion 3, and the maximum insertion stroke of the inserting portion 3 is restricted by means of the bent angle.
By means of the above-mentioned configuration, during assembly, as shown in
It can be seen therefrom that in the solution, the back frame 1 and the chassis 2 are assembled in an inserting fit manner, compared with a traditional manner for assembly with screws fitting holes, the quick-assembly structure has the advantages as follows: firstly, the quick-assembly structure is easier and more convenient to operate; and secondly, the problem that assembly cannot be realized due to slippage of the screws or deviations of the holes can be avoided. In a word, the user experience can be improved.
In this embodiment, the specific composition of the locking end and the abutting surface 311 is as follows: as shown in
In order to prevent the phenomenon of clearance loosening due to an assembling clearance between the locking end of the locking block 5 and the abutting surface 311 after assembly of the back frame 1 and the chassis 2, in this embodiment, as shown in
The purpose of perpendicularly setting the plane where the bottom end surface 51 is located and the plane where the abutting surface 311 is located in this embodiment is to enable the locking block 5 to form a return dead point after the locking end abuts against the abutting surface 311 for locking, so that after the locking end of the locking block 5 abuts against the abutting surface 311, the locking block 5 can only move downwards instead of moving upwards, and at this time, the inserting portion 3 can only be inserted in a single direction and is locked in the opposite direction. In other words, the inserting portion 3 can only be inserted forwards in the inserting port 40, if the inserting portion 3 is pulled back, the locking block 5 cannot be jacked upwards by means of the abutting surface 311 due to the dead point design of the locking block 5, thus the inserting portion 3 cannot be pulled back, the phenomenon of clearance loosening can be eliminated, the assembly stability of the inserting portion 3 and the inserting port 40 can be ensured, and then the assembly stability of the back frame 1 and the chassis 2 can be ensured.
The specific composition of the inserting port 40 is as follows: in view of
In order to achieve the sliding of the locking block 5 and hide the elastic member, in this embodiment, a sliding groove 41 with one end in communication with the inserting port 40 is provided in the mounting block 4, the locking block 5 is slidably arranged in the sliding groove 41, the elastic member is arranged in the sliding groove 41, and the sliding groove 41 extends obliquely to guide the sliding of the locking block 5.
As shown in
In order to unlock the locking block 5 to ensure that the inserting portion 3 can be pulled out of the inserting port 40, in this embodiment, as shown in
In this embodiment, the connecting member is a screw 53 provided with a gasket, the screw 53 is in threaded connection at an end portion of the extension section 52, and a cap end and a gasket portion of the screw 53 are located at the top of the mounting block 4, so that when unlocking is needed, all that is required for driving the locking block 5 to move upwards for unlocking is to pull the screw 53 upwards by means of the tool.
Of course, in other optional embodiments, the stress portion may also be formed as follows: one end of the extension section 52 extends out of the top of the mounting block 4 to form the stress portion, and the unlocking operation can also be achieved in such manner.
In order to enable the locking end of the locking block 5 to relatively smoothly pass through the bump 31 to abut against the abutting surface 311 of the bump 31 when the bump 315 is inserted into the inserting port 40 along with the inserting portion 3, a front side wall of the bump 31 is of a slope structure so as to constitute a guide surface 312.
In view of
| Number | Date | Country | Kind |
|---|---|---|---|
| 202222575706.3 | Sep 2022 | CN | national |
