CN115644624A

CN115644624A - Mounting structure between chair bedplate and chair foot

Info

Publication number: CN115644624A
Application number: CN202211632615.7A
Authority: CN
Inventors: 何炯文; 陈建明; 黄龙飞
Original assignee: Foshan Nanhai Shangshi Household Products Co ltd
Current assignee: Foshan Nanhai Shangshi Household Products Co ltd
Priority date: 2022-12-19
Filing date: 2022-12-19
Publication date: 2023-01-31

Abstract

The utility model provides a mounting structure between chair bedplate and chair foot which characterized in that: the chair leg is buckled into the mortise through the tenon, and a locking device is arranged between the tenon and the mortise to fix the tenon and the mortise into a whole. The locking device is a mounting hole formed in the tenon and a screwing hole formed in the mortise, and a fixing screw penetrates through the mounting hole to be screwed with the screwing hole so as to fix the tenon in the mortise. The invention has the beneficial effects that: adopt mortise-tenon joint for main engaging force between chair foot and the bedplate is all undertaken by this mortise-tenon joint, and need not mainly to rely on connecting bolt, for fixing this kind of plane fixed mode with bolted connection alone, what this kind of mortise-tenon joint structure highlighted is that it has the advantage of three-dimensional fastening, only needs a screw or locating pin etc. just can fix the furniture junction in addition, and installation or dismouting are convenient more and required time is short.

Description

Mounting structure between chair bedplate and chair foot

Technical Field

The invention relates to outdoor furniture, in particular to a mounting structure between a chair seat plate and chair legs.

Background

Along with the improvement of quality of life, people's travelling comfort requirement to the living environment is also along with improving, can set up daily leisure point in balcony or little garden in many people's homes, and the desk chair has also become the furniture that leisure point is equipped with, like outdoor metal chair (including iron or cast aluminium's outdoor chair) more liked by modern people, but because one of outdoor metal's characteristic: the weight is heavy (compared with plastic or wooden furniture, the weight difference is more obvious than the weight difference of the plastic or wooden furniture), and the transportation need to consume more manpower and material resources (especially, the transportation cost is higher when selling to the furniture which is saved or abroad, and the transportation cost is not beneficial to the sale of manufacturers), therefore, a plurality of manufacturers provide furniture (such as a chair) with all parts capable of being disassembled and installed, the furniture (such as the chair) is fixed by screws (namely, the parts of the chair are separated from armrests or chair legs by chair seats, and the parts of the chair are fixed by screws), and in order to ensure that all parts of the chair are firmly connected, a plurality of screws are often arranged at each connecting part for fixing, but the screw fixing structure has the following defects: 1. the number of screws is large, and the production cost is increased; 2. the number of the screws is large, so that the time required for mounting or dismounting is relatively longer, and the use by consumers is not facilitated; 3. the screw fixing structure can only solve the stress problem in a single direction, is a plane fixing structure, is applied to furniture and only has one stress part, so that the stress difference is more obvious, and therefore, the screw fixing structure needs to be further improved.

Disclosure of Invention

The invention aims to overcome the defects in the prior art and provide the mounting structure between the chair seat plate and the chair legs, which has simple structure, convenient installation or disassembly and tight connection relationship among all parts.

The object of the invention is achieved in the following way: the utility model provides a mounting structure between chair bedplate and chair foot which characterized in that: the chair leg is buckled into the mortise through the tenon, and a locking device is arranged between the tenon and the mortise to fix the tenon and the mortise into a whole.

The locking device is a mounting hole formed in the tenon and a screwing hole formed in the mortise, and a fixing screw penetrates through the mounting hole to be screwed with the screwing hole so as to fix the tenon in the mortise.

The locking device is a mounting hole formed in the tenon and an anti-falling hole formed in the mortise, and the expansion pin penetrates through the mounting hole and then is connected with the anti-falling hole in a buckling mode.

The expansion pin comprises a connecting shaft and a limiting table arranged at one end of the connecting shaft, a conical guide table with a small front end and a large back end is arranged at the other end of the connecting shaft, the diameter of the large-diameter end of the conical guide table is larger than that of the connecting shaft, a deformation groove extending along the axis direction is formed in the end face of the conical guide table, and the deformation groove penetrates through the cylindrical surface of the connecting shaft.

The locking device is a first pin hole formed in the side wall of the tenon and a second pin hole formed in the side wall of the mortise, the tenon is connected with the mortise after being installed, the first pin hole is communicated with the second pin hole, the positioning pin penetrates through the second pin hole and then penetrates into the first pin hole, and the tenon and the mortise are fixed into a whole.

The positioning pin is arranged in a tapered rod shape.

The cross section of the mortise is in a trapezoid groove shape, and correspondingly, the tenon is in a trapezoid block shape.

The mortise is arranged in a trapezoidal shape with a narrow bottom and a wide face; correspondingly, the tenon is arranged in a trapezoidal shape matched with the inner content surface of the mortise.

The lateral wall of tenon be provided with spacing fender platform, tenon and tongue-and-groove installation back, spacing fender platform supports presses on the lateral wall opening terminal surface of tongue-and-groove.

The beneficial effects of the invention are: 1. simple structure, low in production cost improves market competition. 2. Adopt mortise-tenon joint for main connecting force between chair foot and the bedplate is all undertaken by this mortise-tenon joint, and need not mainly to rely on connecting bolt, for fixing this kind of plane fixed mode with bolted connection alone, what this kind of mortise-tenon joint structure highlighted is that it has the advantage of three-dimensional fastening, only needs a screw or locating pin etc. just can fix the furniture junction in addition, and installation or dismouting are more convenient and required time is short. 3. Still be provided with locking means between the mortise and tenon joint structure, further increase mortise and tenon joint's fastness, locking means's three kinds of locking modes moreover, its applicable usefulness in different demands, extensive applicability.

Drawings

Fig. 1, 2 and 3 are general assembly effect diagrams of the invention.

FIG. 4 is an enlarged view of the portion A of FIG. 3 according to the present invention.

Fig. 5 is a schematic structural diagram of a first embodiment of the locking device in the invention.

Fig. 6 is a schematic structural diagram of a locking device according to a second embodiment of the present invention.

Fig. 7 is a schematic view of the structure of the expansion pin of the present invention.

Fig. 8 is a sectional view of the expansion pin structure of the present invention.

Fig. 9 is a schematic structural diagram of a locking device according to a third embodiment of the present invention.

FIG. 10 is a schematic view of the tenon structure of the present invention.

Detailed Description

The present invention will be further described with reference to the accompanying drawings. The utility model provides a mounting structure between chair bedplate and chair foot which characterized in that: it is including setting up tongue-and-groove 2 on bedplate 1, and locate tenon 4 on chair foot 3, in chair foot 3 goes into tongue-and-groove 2 through this tenon 4 buckle, be provided with locking means between tenon 4 and the tongue-and-groove 2, fixed as an organic whole with tenon 4 and tongue-and-groove 2.

The locking device is a mounting hole 5 formed in the tenon 4 and a screwing hole 6 formed in the mortise 2, and the fixing screw 7 penetrates through the mounting hole 5 to be in screwed connection with the screwing hole 6, so that the tenon 4 is fixed in the mortise 2.

Locking device for setting up mounting hole 5 on tenon 4, and locate the anticreep hole 8 in the tongue-and-groove 2, expansion pin 9 passes behind the mounting hole 5 to be connected with 8 buckles in the anticreep hole.

The expansion pin 9 comprises a connecting shaft 91 and a limiting table 92 arranged at one end of the connecting shaft 91, a conical guide table 93 with a small front end and a large rear end is arranged at the other end of the connecting shaft 91, the diameter of the large-diameter end of the conical guide table 93 is larger than that of the connecting shaft 91, a deformation groove 94 extending along the axis direction is formed in the end face of the conical guide table 93, and the deformation groove 94 penetrates through the cylindrical surface of the connecting shaft 91.

Locking device for setting up at the first pinhole 10 of 4 lateral walls of tenon, and locate the second pinhole 11 of 2 lateral walls of mortise,

tenon

4 and 2 installation backs of mortise, first pinhole 10 switches on with second pinhole 11, in first pinhole 10 is gone into to the interlude after locating pin 12 passes second pinhole 11, fixed as an organic whole tenon 4 and mortise 2.

The positioning pin 12 is arranged in a tapered rod shape.

The cross section of the mortise 2 is in a trapezoid groove shape, and correspondingly, the tenon 4 is in a trapezoid block shape.

The mortise 2 is in a trapezoidal shape with a narrow bottom and a wide face; correspondingly, the tenon is arranged in a trapezoidal shape matched with the inner content surface of the mortise.

The lateral wall of tenon 4 be provided with spacing fender platform, tenon 4 and tongue-and-groove 2 installation back, spacing fender platform supports presses on the lateral wall opening terminal surface of tongue-and-groove.

The working principle is as follows: in the present case, through mortise and tenon structural connection between the chair foot of chair and the bedplate, specifically be mortise 2 on bedplate 1, tenon 4 on chair foot 3, in chair foot 3 gone into mortise 2 through 4 buckles of this tenon, be provided with locking means between tenon 4 and the mortise 2, fixed as an organic whole with tenon 4 and mortise 2. Wherein, the back is connected with the mortise to the tenon, and control between the two, downwards, and forward direction degree of freedom can be injectd by tenon fourth of twelve earthly branches structure itself, and locking means only need inject the tenon and break away from the mortise in, inject the degree of freedom of direction upwards promptly can. The force requirements on the locking device are therefore smaller. In addition, the opening direction of mortise sets up downwards, and under the effect that receives gravity, the gravity that comes from the bedplate all applys the bottom at the mortise through the tenon, consequently, normally takes the in-process at the user, and all gravity all have the tenon to accomplish with the tenon fourth of the twelve earthly branches, and locking means does not need the atress, further reduces the requirement to locking means, and more importantly this kind of mortise-tenon joint structure is for through the fixed mode of bolted connection, and the chair atress is better more steady.

Fig. 5 is a schematic structural view of a first embodiment of the locking device of the present invention. Locking device for setting up mounting hole 5 on tenon 4, and locate the spiro union hole 6 in tongue-and-groove 2, set screw 7 passes mounting hole 5 and the spiro union of spiro union hole 6, fixes tenon 4 in tongue-and-groove 2. Wherein, for the better fixed screw that hides for the chair appearance is neater and more pleasing to the eye, mounting hole 5 in this case is the step hole, and fixed screw 7 is that the countersunk head screw is installed in this step hole. The nut part of the fixing screw is hidden by the depth of the stepped hole. Wherein, the inner screw thread is processed in the screw thread hole by processing methods such as tapping, and the fixing screw 7 can be screwed with the inner screw thread. Wherein, because the tenon fourth of the twelve earthly branches connection structure has been adopted between bedplate and the chair foot, consequently, the atress performance requirement to the set screw direction is not high, so phenomenons such as screw hole damage can not appear.

Fig. 6 is a schematic structural view of a second embodiment of the locking device of the present disclosure. Locking device for setting up mounting hole 5 on tenon 4, and locate the anticreep hole 8 in the tongue-and-groove 2, expansion pin 9 passes behind the mounting hole 5 to be connected with 8 buckles in the anticreep hole. One end of the expansion pin 9 is provided with a tapered guide table 93 with a small front part and a big back part. When a user installs the expansion pin, the conical guide table 93 and the mounting hole are mutually extruded, so that the conical guide table 93 is bent and deformed inwards under the action of the deformation groove 94, and finally after the conical guide table 93 passes through the mounting hole, the conical guide table 93 is reset and buckled on the back of the mounting hole for fixing. Wherein, form the back-off between toper direction platform 93 and the connecting axle 91, so the inflation pin installation back generally can not be dismantled to avoided the chair in the use, led to adapting unit pine to take off because of the screw is not hard up, guaranteed the stability of this chair later stage use.

Fig. 9 is a schematic structural view of a locking device according to a third embodiment of the present invention. Locking device for setting up at the first pinhole 10 of tenon 4 lateral wall, and locate the second pinhole 11 of 2 lateral walls of tongue-and-groove, tenon 4 and tongue-and-groove 2 installation back, first pinhole 10 switches on with second pinhole 11, in the first pinhole 10 of interlude is gone into after passing second pinhole 11 to locating pin 12, fixed as an organic whole tenon 4 and tongue-and-groove 2. The positioning pin 12 is provided in a tapered rod shape. When it with insert, back in second pinhole 11 and the first pinhole 10, and be the interference fit state between the pinhole, can insert the locating pin in the pinhole completely to make it in the use in later stage, can not drop and lead to adapting unit pine to take off because of the locating pin, also played the effect of having guaranteed this chair later stage stability of using.

Further: the mortise 2 in the scheme is arranged in a ladder shape with a narrow bottom and a wide face; correspondingly, the tenon is arranged in a trapezoidal shape matched with the inner content surface of the mortise. Therefore, when the tenon is installed in the mortise, the tenon and the inclined plane of the side wall of the mortise can be mutually matched and extruded, so that the mortise and the tenon are precisely combined, and looseness between the mortise and the tenon is avoided. In addition, the lateral wall of tenon 4 be provided with spacing fender platform, tenon 4 and tongue-and-groove 2 installation back, spacing fender platform supports presses on the lateral wall open end face of tongue-and-groove. Further limiting the lateral displacement between the mortise and tenon.

The application in the scheme can be applied to metal furniture and injection products.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. This need not be, nor should it be exhaustive of all embodiments. And obvious variations or modifications derived therefrom are intended to be within the scope of the invention as claimed in the appended claims.

Claims

1. The utility model provides a mounting structure between chair bedplate and chair foot which characterized in that: the chair comprises a mortise (2) arranged on a seat board (1) and tenons (4) arranged on chair legs (3), wherein the chair legs (3) are buckled into the mortise (2) through the tenons (4), and a locking device is arranged between the tenons (4) and the mortise (2) to fix the tenons (4) and the mortise (2) into a whole.

2. The structure of claim 1, wherein the structure for mounting between the seat plate and the seat leg comprises: locking device for setting up mounting hole (5) on tenon (4) to and locate spiro union hole (6) in tongue-and-groove (2), set screw (7) pass mounting hole (5) and spiro union hole (6) spiro union, fix tenon (4) in tongue-and-groove (2).

3. The structure of claim 1, wherein the structure for mounting between the seat plate and the seat leg comprises: locking device for setting up mounting hole (5) on tenon (4), and locate anticreep hole (8) in tongue-and-groove (2), expansion pin (9) pass behind mounting hole (5) and are connected with anticreep hole (8) buckle.

4. A mounting structure between a seat plate and a leg of a chair as claimed in claim 3, wherein: expansion pin (9) including connecting axle (91), and locate connecting axle (91) wherein spacing platform (92) of one end, connecting axle (91) other one end is provided with big back-to-front's toper direction platform (93), the diameter setting that the big footpath end diameter of toper direction platform (93) is greater than connecting axle (91), the terminal surface of toper direction platform (93) set up along deformation groove (94) that the axis direction extends, deformation groove (94) run through the cylinder setting of connecting axle (91).

5. The structure of claim 1, wherein the structure for mounting the seat plate to the seat leg comprises: locking device for set up first pinhole (10) at tenon (4) lateral wall, and locate second pinhole (11) of tongue-and-groove (2) lateral wall, tenon (4) and tongue-and-groove (2) installation back, first pinhole (10) switch on with second pinhole (11), in first pinhole (10) are alternated after passing second pinhole (11) in locating pin (12), fixed as an organic whole tenon (4) and tongue-and-groove (2).

6. The structure of claim 5, wherein the structure for mounting the seat plate to the seat leg comprises: the positioning pin (12) is arranged in a tapered rod shape.

7. The structure of claim 1, wherein the structure for mounting between the seat plate and the seat leg comprises: the cross section of the mortise (2) is in a trapezoid groove shape, and correspondingly, the tenon (4) is in a trapezoid block shape.

8. The structure of claim 7, wherein the structure for mounting between the seat plate and the seat leg comprises: the mortise (2) is arranged in a trapezoidal shape with a narrow bottom and a wide face; correspondingly, the tenon (4) is arranged in a trapezoidal shape matched with the inner content surface of the mortise.

9. The structure of claim 8, wherein the structure for mounting between the seat plate and the seat leg comprises: the side wall of the tenon (4) is provided with a limiting blocking platform, and after the tenon (4) and the mortise (2) are installed, the limiting blocking platform (41) is pressed on the end face of the opening of the side wall of the mortise.