Hidden leg of sofa bed

Abstract

The utility model discloses a hidden leg of a sofa bed. The hidden leg of the sofa bed comprises a base plate, a supporting leg is pivoted to one side of the base plate, a pull rod is pivoted to the other side of the base plate, a driving rod is installed in the middle of the pull rod, a vertical plate is arranged on the side wall, facing the pull rod, of the supporting leg, a lock pin is arranged on the vertical plate, and a sliding way for the lock pin to slide is formed in the pull rod and comprises a long groove. The end, extending to the supporting leg, of the long groove is provided with a concave part turning upwards, and the lock pin is stored in the concave part when the supporting leg is vertical. The problems that in the prior art, stability is poor, and certain potential safety hazards exist are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of home furnishing manufacturing, in particular to a sofa bed with hidden legs. Background Art

[0002] The existing Chinese utility model patent with publication number CN216854252U and titled "A Folding Bed with Bed Legs" discloses that the retractable bed legs include a second base fixed to the inner side of the baffle, a pull rod is arranged on the right side of the second base, the right end of the pull rod is pivotally connected to the second base through the first axis, and the left end is installed with the second axis, and a leg is arranged on the left side of the second base, and the top of the leg is pivotally connected to the second base through the third axis, and a vertical plate is welded to the upper side of the leg, and the vertical plate is provided with a slideway for the second axis to slide, and the middle part of the pull rod is pivotally connected to the driving rod. However, when the retractable bed legs are in the unfolded state, the second axis slides to the lower part of the slideway, and the upper part of the second axis is open at this time, and the restraining force on the second axis is relatively small. When the legs are subjected to lateral force toward the slideway, the second axis is easy to slide upward along the oblique slideway, causing the legs to be retracted inward, and the stability is poor, and there are certain safety hazards. Utility Model Content

[0003] In view of the deficiencies in the prior art, the purpose of the utility model is to provide a sofa bed with hidden legs which improves stability and eliminates potential safety hazards.

[0004] In order to achieve the above-mentioned purpose, the technical solution adopted by the sofa bed of the utility model for hiding the legs is:

[0005] A sofa bed with hidden legs comprises a base plate, a leg is pivotally connected to one side of the base plate, a pull rod is pivotally connected to the other side of the base plate, a driving rod is installed in the middle of the pull rod, a vertical plate is arranged on the side wall of the leg facing the pull rod, a locking pin is arranged on the vertical plate, the pull rod is provided with a slideway for the locking pin to slide, the slideway comprises a long groove, a depression turned upward is arranged on one end of the long groove extending to the leg, and the locking pin is stored in the depression when the leg is vertical.

[0006] Preferably, the base plate is provided with a limit pin for preventing the supporting legs from rotating upward.

[0007] Preferably, a protective pad is provided at the bottom of the leg.

[0008] Preferably, the supporting legs are circular tubes or rectangular tubes.

[0009] Compared with the prior art, the utility model has the following advantages:

[0010] When the legs are vertical, the locking pin is stored in the recess. At this time, when the legs are subjected to lateral force toward the slide, the top of the locking pin is closed and there is no displacement space. The pull rod has a greater restraining force on the locking pin, thereby improving the stability of the sofa bed's hidden legs in the unfolded state, thereby eliminating safety hazards. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a structural schematic diagram of the sofa bed of the utility model when the hidden legs are unfolded;

[0012] Figure 2 It is a structural schematic diagram of the pull rod of the utility model;

[0013] Figure 3 It is a structural schematic diagram of the sofa bed of the utility model when the hidden legs are retracted.

[0014] Among them, 1 is a base plate, 11 is a limit pin, 2 is a first axis, 3 is a support leg, 31 is a protection pad, 32 is a vertical plate, 32 is a locking pin, 4 is a second axis, 5 is a pull rod, 51 is a driving rod, 52 is a slideway, 521 is a long groove, 522 is a recess, and 6 is a stop rod. DETAILED DESCRIPTION

[0015] The present invention is further explained below in conjunction with the accompanying drawings and specific implementation methods. It should be understood that these implementation methods are only used to illustrate the present invention and are not used to limit the scope of the present invention. After reading the present invention, various equivalent forms of modifications to the present invention by those skilled in the art all fall within the scope defined by the claims attached to this application.

[0016] like Figure 1-3 As shown, a sofa bed with hidden legs comprises a base plate 1, a support leg 3 is pivoted to the left side of the base plate through a first axis 2, the support leg is a rectangular tube, a protection pad 31 is installed at the bottom of the rectangular tube, the protection pad is made of nylon, and when the support leg touches the ground, the ground is protected from wear and tear, a pull rod 5 is pivoted to the right side of the base plate through a second axis 4, a driving rod 51 is installed in the middle of the pull rod, a vertical plate 32 is welded to the side wall of the leg facing the pull rod, a locking pin 321 is installed on the vertical plate, a slide 52 for the locking pin to slide is provided on the pull rod, the slide comprises a long groove 521, a depression 522 is provided at one end of the long groove extending to the support leg and turning upward, and the locking pin is stored in the depression when the support leg is vertical, a limit pin 11 is installed on the base plate, the limit pin is adjacent to one side of the second axis, and is used to prevent the support leg from rotating upward to prevent the support leg from turning upward at too large an angle and failing to fall back normally.

[0017] The specific working process and principle of the utility model are as follows: when the sofa bed is unfolded and used as a bed, the legs rotate around the first axis by their own gravity to be in a vertical state, and the locking pin sinks into the concave position to ensure that the legs are in a vertical state; when the sofa bed is folded and used as a sofa, the driving rod contacts the stop rod 6, and the pull rod rotates around the second axis under the reaction force of the stop rod, and the locking pin slides out of the concave position and slides in the long groove, and the legs are completely folded after losing the constraint. The utility model improves the stability of the unfolded state of the hidden legs of the sofa bed through the optimized design of the slideway, thereby eliminating safety hazards.

Claims

1. A sofa bed with hidden legs, comprising a base plate, a leg pivotally connected to one side of the base plate, a pull rod pivotally connected to the other side of the base plate, a driving rod installed in the middle of the pull rod, and a vertical plate arranged on the side wall of the leg facing the pull rod, characterized in that: The vertical plate is provided with a locking pin, the pull rod is provided with a slideway for the sliding movement of the locking pin, the slideway includes a long groove, one end of the long groove extending to the supporting leg is provided with a depression turned upward, and the locking pin is stored in the depression when the supporting leg is vertical.

2. The sofa bed with hidden legs according to claim 1, characterized in that: The base plate is provided with a limiting pin for preventing the supporting legs from rotating upward.

3. The sofa bed with hidden legs according to claim 1, characterized in that: A protection pad is arranged at the bottom of the supporting leg.

4. The sofa bed with hidden legs according to claim 3, characterized in that: The supporting legs are circular tubes or rectangular tubes.

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