TWI703946B - Quick locking structure of chair back and chair seat - Google Patents

Abstract

The invention relates to a quick locking structure of a chair back and a chair seat. Primarily, a seat chassis and a backrest bracket are provided with a first connecting portion and a second connecting portion respectively. An assembling slot is formed on the first connecting portion, and a locking hole is provided at a bottom of the assembling slot. Furthermore, the second connecting portion is sleeved with the first connecting portion within the assembling slot from an opening of the assembling slot. Moreover, an elastic pin disposed at a bottom of the second connecting portion is correspondingly inserted into the locking hole of the assembling slot. By the engagement design, not only can the assembly of the backrest bracket and the seat chassis be easily completed, but also the dangers such as unintended loosening of the backrest bracket and the seat chassis during sitting can be reliably prevented.

Description

Quick lock structure for back and seat

The present invention relates to a quick-locking structure of a chair back and a seat, especially a structure that can easily complete the assembly of the seat back support and the seat chassis, and can reliably prevent the seat back support and the seat chassis from unintended loosening during riding Quick lock structure.

Press, chairs are essential furniture for home or office. Generally, chairs are mainly composed of a back and a seat. The seat can be used for the user’s buttocks and the back can be used to support the user’s back. Timely comfort.

In order to reduce the cost of transportation and warehousing of the existing chairs, the industry will separate the back of the chair from the seat and store them separately, and then assemble and combine them when they are delivered to the consumer. Please refer to China Announcement No. 412983, "Improvement of Office Chairs" The existing chair back and seat assembly structure, such as the “office chair base and back structure” of China Announcement No. 527888, and the “Seat Back Bracket Assembly Structure” of China Announcement No. M360631, are mainly used in the seat and chair. Each of the backs is provided with a coupling groove, and the two ends of an L-shaped connecting rod are respectively inserted into the coupling grooves of the chair back and the seat, and the coupling grooves of the chair back and the seat are each provided with a number of lock holes to connect with the L After the lock holes at the two ends of the type connecting rod correspond, screw and other fasteners are used to pass through the lock to assemble and fix the seat back and seat.

Of course, the assembly of the back and the seat of the existing chair is mainly fixed by screw locking. In the assembly, the screws must be rotated one by one with a screwdriver into the corresponding lock holes of the L-shaped connecting rod and the back and the seat. In this case, not only the assembly is troublesome and time-consuming, but after a period of use, the screws that are screwed to the keyholes of the L-shaped link, the back of the chair and the seat are easy because the user repeatedly reclines or swings the chair while riding the chair Such as the back, and unexpected loosening or falling off of the screws, causing danger when riding on the chair.

The reason is that, in view of the lack of assembly of the back and the seat of the existing chair, the inventor used his many years of manufacturing and design experience and knowledge in related fields to develop the present invention through various ingenuity.

The present invention relates to a quick-locking structure for the seat back and the seat. The main purpose of the invention is to provide a simple and easy way to assemble the seat back support and the seat chassis, and can reliably prevent the seat back support and the seat chassis from being inconsistent during riding. The quick lock structure is expected to loosen.

In order to achieve the above-mentioned implementation objectives, the inventor of the present invention developed the following seat back and seat quick lock structure, which mainly includes a seat chassis and a seat back bracket, and a first connecting portion is provided at the rear end of the seat chassis. And the first connecting portion is formed with a set of vertical grooves, and at least one snap hole is provided on the bottom surface of the set of vertical grooves, and the bottom end of the seat back bracket is provided with a second connecting portion, and the second connecting portion is separated from the chair The notch of the assembling groove of the first connecting portion of the seat chassis is correspondingly sleeved in the assembling groove, and at least one elastic pin is provided on the bottom side of the second connecting portion, and the elastic pin and the engaging hole of the assembling groove Corresponding to insert a card switch.

The seat back and seat quick-locking structure as described above, wherein the first connecting portion of the seat chassis is formed with a U-shaped assembly section, and a fixing piece is combined with a cover on the open position above the assembly section for the The cover of the fixing piece forms a one-circle side closure, and only the set of vertical grooves with a notch is left behind.

The seat back and seat quick-locking structure as described above, wherein a lock hole is provided on the fixing piece, a hole corresponding to the position of the lock hole is provided on the bottom surface of the assembling groove, and a locking member is provided to make The fastener passes through the perforation of the assembling groove to be locked and fixed with the keyhole of the fixing piece, so that the fastener is erected in the assembling groove, and the second engagement portion of the seat back bracket is at the center of the front side An embedding concave portion is provided at the position so that the embedding concave portion of the second engaging portion sleeved in the assembling groove is correspondingly fitted and positioned with the locking member in the assembling groove.

The seat back and seat quick lock structure as described above, wherein the elastic tip includes a spring and a tip rod, and the second connecting portion of the seat back bracket is provided with at least one penetrating from the top surface to the bottom surface The through hole of the through hole is formed with a step edge on the hole wall of the through hole, and the tip rod and the spring are sequentially assembled in the through hole, and the bottom end of the tip rod protrudes from the bottom surface of the second connecting portion, In addition, a stop edge is formed on the upper end of the tip rod to stop and locate the step edge of the through hole. A gasket is also provided to fix the gasket on the top surface of the second connecting portion so as to cover the Above the through hole, the two ends of the spring are respectively positioned against the washer and the upper end of the tip rod, and the bottom end of the tip rod of the elastic tip is inserted into the clamping hole of the assembly slot correspondingly.

Thereby, when assembling the seat back bracket and the seat chassis, the second connecting portion of the seat back bracket is correspondingly sleeved in the assembling groove by the notch provided in the assembly groove of the first connecting portion of the seat chassis , And make the elastic pin on the bottom side of the second connecting part correspondingly insert the latch in the latch hole of the assembly slot. According to this latch combination design, it is easy to complete the assembly of the seat back bracket and the seat chassis. It is sure to prevent the risk of unintended loosening of the seat back bracket and seat chassis during riding.

In order to enable the technical means of the present invention and the effects it can achieve to have a more complete and clear disclosure, the detailed description is as follows, please refer to the disclosure drawings and figure numbers together:

First of all, please refer to the first to third figures, which are the quick-locking structure of the back and seat of the present invention, which mainly includes:

A seat chassis (1), so that the rear end of the seat chassis (1) is provided with a first connecting portion (11), the first connecting portion (11) is formed into a U-shaped assembly section (12), and The opening at the top of the assembly section (12) is covered with a fixing piece (13) to form a one-week side closure at the place where the fixing piece (13) is covered, and an assembly groove (14) with a notch (141) is left behind only ), and a lock hole (131) is provided on the fixing piece (13). The lock hole (131) is a screw hole, and a bottom surface of the assembly groove (14) is provided with a lock hole (13). The perforation (142) corresponding to the position of the lock hole (131) is also provided with a lock piece (15). The lock piece (15) includes a knob (151) and a lock lever (152) connected to the knob (151) ), the lock rod (152) is a screw rod, so that the lock rod (152) of the lock piece (15) passes through the perforation (142) of the assembly groove (14) to lock the fixing piece (13) The hole (131) is screwed and locked, and the locking rod (152) of the locking member (15) is vertically erected in the assembly groove (14), and is placed on the bottom surface of the assembly groove (14) adjacent to its notch ( 141) At least one card hole (16) is provided at the position;

A seat back bracket (2) is provided with a second connecting portion (21) at the bottom end of the seat back bracket (2), and a longitudinally embedded recess (22) is arranged at the center of the front side of the second connecting portion (21) ), so that the second connecting portion (21) is correspondingly sleeved in the assembling groove (14) by the notch (141) of the assembling groove (14) of the first connecting portion (11) of the seat chassis (1) The second engaging portion (21) is fitted with the locking rod (152) of the locking member (15) erected in the assembling groove (14) with the front recessed portion (22) of the second engaging portion (21). (21) The bottom side assembly is provided with at least one elastic tip (23). The elastic tip (23) includes a spring (231) and a tip rod (232). The second connecting portion (21) is provided with at least A through hole (24) penetrates longitudinally from its top surface to its bottom surface, and a step edge (241) is formed on the wall of the through hole (24), and the tip rod (232) and spring (231) are The sequence group is arranged in the through hole (24), and the bottom end of the tip rod (232) protrudes from the bottom surface of the second connecting portion (21), and the stop edge (233) of the upper end of the tip rod (232) It stops and locates with the step edge (241) of the through hole (24), and a gasket (25) is provided to fix the gasket (25) on the top surface of the second connecting portion (21) to cover Above the through hole (24), the two ends of the spring (231) are positioned against the washer (25) and the upper end of the pin (232) respectively, so that the elastic pin (23) has its pin (232) The bottom end corresponds to the card hole (16) on the bottom surface of the set of vertical slots (14) to insert a card switch.

Accordingly, when you want to assemble the seat back bracket (2) with the seat chassis (1), please refer to the fourth figure together, and fasten the second connecting part ( 21) The notch (141) of the assembling groove (14) of the first connecting portion (11) of the seat chassis (1) is correspondingly sleeved in the assembling groove (14), and at this time, it stands in the assembling groove The locking member (15) in (14) has a lock lever (152) that engages with the recessed portion (22) on the front side of the second engaging portion (21), and is also assembled on the bottom side of the second engaging portion (21) The tip rod (232) of the elastic tip (23) is retracted and set on the bottom surface of the assembly groove (14). At this time, the spring (231) of the elastic tip (23) is in a compressed state.

Please also refer to the fifth figure. As the second connecting portion (21) of the seat back bracket (2) is continuously inserted into the assembly groove (14) of the seat chassis (1), the second connecting portion (21) The recessed part (22) of) is fitted with the locking rod (152) of the locking member (15) erected in the assembly groove (14), and the tip rod (232) of the elastic tip (23) is also arranged along the assembly The bottom surface of the groove (14) slides to the hole (16). When the hole (16) is reached, the spring (231) of the elastic pin (23) will return to its original shape and reset against the push pin (232) , So that the bottom end of the tip rod (232) is correspondingly inserted into the hole (16) provided on the bottom surface of the assembly groove (14) for positioning. According to this, the seat back bracket (2) and the seat chassis ( 1) Assembly (as shown in the sixth figure).

Since the seat back and seat quick lock structure of the present invention utilizes the snapping structure of the elastic pin (23) and the snap hole (16) to combine the seat back bracket (2) with the seat chassis (1), it can It is indeed avoided that the existing seat back and the seat seat are locked with screws, and the risk of unintended loosening of the screws is prone to occur during riding. Furthermore, when you want to separate the seat back bracket (2) from the seat chassis (1), force the elastic pin (23) inserted in the seat chassis (1) and the snap hole (16) upward Push to make the elastic pin (23) detach from the insertion latch of the locking hole (16), and then the second connecting portion (21) of the seat back bracket (2) is connected to the first connecting portion (21) of the seat chassis (1) The assembly groove (14) of the part (11) is drawn out, and the assembled state of the seat back bracket (2) and the seat chassis (1) can be easily released.

The foregoing embodiments or drawings do not limit the implementation of the seat back and seat quick lock structure of the present invention. Any appropriate changes or modifications made by those with ordinary knowledge in the technical field should be regarded as not departing from the patent of the present invention. category.

In summary, the embodiments of the present invention can indeed achieve the expected effects, and the specific structure disclosed by it has not been seen in similar products, nor has it been disclosed before the application. It is in full compliance with the provisions of the Patent Law and Requirement, Yan filed an application for a patent for invention in accordance with the law, and pleaded for favor of examination, and granted a patent, it would be more virtuous.

１: Chair seat chassis

11: The first link

12: Assembly interval

13: Fixed piece

131: Keyhole

14: Assembly slot

141: Notch

142: Piercing

15: Lock the firmware

151: Knob

152: Lock lever

16: Card hole

2: Chair back bracket

21: The second link

22: Embedded recess

23: Elastic tip

231: Spring

232: Tip pole

233: Stop edge

24: Through hole

241: Class Fate

25: Gasket

Figure 1: The three-dimensional exploded view of the present invention

Figure 2: Another three-dimensional exploded view of the present invention

Figure 3: Anatomical view of the present invention

Figure 4: Sectional view of the assembled state of the present invention (1)

Figure 5: Sectional view of the assembled state of the present invention (2)

Figure 6: A perspective view of the assembled state of the present invention

1: Chair seat chassis

11: The first link

12: Assembly interval

13: fixed piece

14: Assembly slot

141: Notch

15: Lock firmware

16: card hole

2: Chair back bracket

21: The second link

22: recessed part

Claims (4)

A quick-locking structure for a seat back and a seat mainly includes a seat chassis and a seat back support. A first connecting portion is provided at the rear end of the seat chassis, and a set of vertical grooves are formed on the first connecting portion, At least one snap hole is provided on the bottom surface of the assembling groove, and the bottom end of the seat back bracket is provided with a second connecting portion, and the second connecting portion is formed by the seat chassis and the groove of the first connecting portion of the assembly groove The opening is correspondingly sleeved in the assembling slot, and at least one elastic pin is arranged on the bottom side of the second connecting portion, and a latch is inserted into the elastic pin corresponding to the clamping hole of the assembling slot. According to claim 1, the seat back and seat quick lock structure, wherein the first connecting portion of the seat chassis is formed with a U-shaped assembly section, and a fixing piece is combined with a cover at the open above the assembly section, In order to form a peripheral side closure at the cover of the fixing piece, the set of vertical grooves with only a notch is left behind. According to claim 2, the seat back and seat quick lock structure, wherein the fixing piece is provided with a lock hole, and the bottom surface of the assembly groove is provided with a hole corresponding to the position of the lock hole, and a locking member is provided , The fastener is made to pass through the perforation of the assembling groove to be locked and fixed with the keyhole of the fixing piece, so that the fastener is erected in the assembling groove, and the second connecting portion of the seat back bracket is The center of the front side is provided with an embedding recess, so that the embedding recess of the second engaging portion sleeved in the assembly groove is correspondingly engaged and positioned with the locking member in the assembly groove. The seat back and seat quick-lock structure according to claim 1, wherein the elastic tip includes a spring and a tip rod, and the second connecting portion of the seat back bracket is provided with at least one through the top surface The through hole to the bottom surface of the through hole is formed with a step edge on the hole wall of the through hole, and the tip rod and the spring are sequentially assembled in the through hole, and the bottom end of the tip rod protrudes from the second connection On the bottom surface of the second connecting portion, a stop edge is formed at the upper end of the tip rod to stop and locate the step edge of the through hole. A gasket is also provided to fix the gasket on the top surface of the second connecting portion to It covers the upper part of the through hole, and makes the two ends of the spring abut against the washer and the upper end of the tip rod respectively for positioning, and makes the elastic tip and the bottom end of the tip rod corresponding to the clamping hole of the assembly slot to be inserted with a latch.

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