Handrail pushing type iron stand with adjustable back-leaning angle

Abstract

The utility model discloses a handrail pushing type iron stand with an adjustable back-leaning angle. The armrest push-type iron stand with the adjustable back-leaning angle comprises a base, stretching assemblies are arranged on the two sides of the base, each stretching assembly comprises a seat frame mechanism, each seat frame mechanism comprises a first seat frame connecting rod, one end of each first seat frame connecting rod is pivoted to the front side of the base, and the other end of each first seat frame connecting rod is movably connected with a second seat frame connecting rod; a seat frame mounting plate is pivoted to the top of the second seat frame connecting rod, a fifth seat frame connecting rod is pivoted to the rear side of the seat frame mounting plate, a sixth seat frame connecting rod is pivoted to the bottom end of the fifth seat frame connecting rod, and a first limiting pin is arranged in the middle of the sixth seat frame connecting rod; a sliding groove allowing the first limiting pin to slide up and down is formed in the middle of the base, the base is detachably connected with a limiting plate, and one end of the limiting plate extends to the upper side of the sliding groove to prevent the first limiting pin from sliding to the top wall of the sliding groove. According to the utility model, the problem in the prior art that a user cannot adjust the back-leaning angle of the backrest according to own conditions is solved.

Description

Technical Field

[0001] The utility model relates to the field of home furnishing manufacturing, in particular to an armrest push-type iron frame with adjustable reclining angle. Background Art

[0002] The existing patent document with publication number CN220494648U and titled "A seat frame bracket and seat frame" discloses that the backrest mechanism and telescopic mechanism of the second posture (lying posture) are fully unfolded, wherein the limiting protrusion moves upward and abuts against the upper surface of the limiting groove, thereby improving the user's comfort. It is not difficult to find that the size of the limiting groove determines the range of motion of the limiting protrusion, which also determines the reclining angle of the backrest in the lying position, that is, the larger the space for the limiting protrusion to move upward, the larger the reclining angle of the backrest in the lying position, and the more it can improve the user's comfort. However, for users with heavier weight, as the reclining angle of the backrest increases, it is easy to tip backwards, and the safety is poor. Utility Model Content

[0003] In view of the deficiencies in the prior art, the purpose of the utility model is to provide a push-type iron frame with an adjustable reclining angle for users to choose, which can avoid backward tipping accidents and improve the safety of use.

[0004] In order to achieve the above-mentioned purpose, the technical solution adopted by the push-type iron frame of the handrail with adjustable reclining angle of the utility model is:

[0005] A push-type iron frame with an adjustable reclining angle, comprising a base, extension components are arranged on both sides of the base, the extension components include a seat frame mechanism, the seat frame mechanism includes a seat frame connecting rod 1, one end of the seat frame connecting rod 1 is pivotally connected to the front side of the base, and the other end is movably connected to the seat frame connecting rod 2, the middle part of the seat frame connecting rod 2 is pivotally connected to the seat frame connecting rod 3 and the seat frame connecting rod 4 through the same rotating shaft, the rear end of the seat frame connecting rod 4 is pivotally connected to the rear side of the base, the top of the seat frame connecting rod 2 is pivotally connected to the seat frame mounting plate, and the front side of the seat frame mounting plate is connected to the seat frame connecting rod 3 A leg mechanism is arranged between the seat frame, a backrest mechanism is arranged between the rear side of the seat frame mounting plate and the rear side of the base, a seat frame connecting rod five is pivotally connected to the rear side of the seat frame mounting plate, a seat frame connecting rod six is ​​pivotally connected to the bottom end of the seat frame connecting rod five, the front side of the seat frame connecting rod six is ​​movably connected to the front side of the base, a first limit pin is arranged in the middle part of the seat frame connecting rod six, a sliding groove for the first limit pin to slide up and down is opened in the middle part of the base, the base is detachably connected to the limit plate, one end of the limit plate extends to the upper side of the sliding groove, blocking the first limit pin from sliding toward the top wall of the sliding groove.

[0006] Preferably, the leg mechanism includes leg link one and leg link two pivotally connected to the front side of the seat frame mounting plate, seat frame link three is pivotally connected to the rear side of leg link one, the front end of leg link one is pivotally connected to leg link three, the rear side of leg link three is pivotally connected to leg link two, the front end of leg link three is pivotally connected to leg link four, and the front ends of leg link four and leg link two are pivotally connected to the same footrest mounting plate.

[0007] Preferably, a safety bracket is provided in the middle of the leg connecting rod three, and a baffle is provided on the safety bracket.

[0008] Preferably, the backrest mechanism includes a backrest mounting plate, the front side of the bottom of the backrest mounting plate is pivotally connected to the rear side of the seat frame mounting plate, the rear side of the bottom of the backrest mounting plate is pivotally connected to a backrest support rod, and the bottom end of the backrest support rod is pivotally connected to the rear side of the base.

[0009] Preferably, the backrest mounting plate is provided with a second limiting pin, and the seat frame mounting plate is provided with a first limiting surface cooperating with the second limiting pin.

[0010] Compared with the prior art, the utility model has the following advantages:

[0011] 1. For users with heavier weight, the limit plate blocks the first limit pin from sliding toward the top wall of the slide slot when the user is lying down, thereby reducing the reclining angle of the backrest mechanism, avoiding accidents of tipping over backwards, and improving safety. For users with lighter weight, the limit plate can be removed, and the first limit pin can slide toward the top wall of the slide slot when the user is lying down, so that the backrest mechanism can obtain a larger reclining angle.

[0012] 2. After the leg mechanism is opened, a certain space will be left at the bottom, and the baffle will prevent curious children from entering the space, so as to prevent users from restoring the iron frame without knowing it and crushing the children, thereby improving safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of a push-type iron frame of an armrest with adjustable reclining angle of the utility model;

[0014] Figure 2 is a back view of the extended assembly in a lying position;

[0015] Figure 3 is a front view of the stretched component in a lying position;

[0016] Figure 4 is a back view of the extension assembly in a lying position after the limit plate is removed;

[0017] Figure 5 is a dorsal view of the extended assembly in a sitting position;

[0018] Among them, 1 base, 11 second limiting surface, 12 slide groove, 13 limiting plate, 2 extension assembly, 21 seat frame mechanism, 211 seat frame connecting rod 1, 2111 first waist-shaped hole, 212 seat frame connecting rod 2, 213 seat frame connecting rod 3, 214 seat frame connecting rod 4, 2141 third limiting pin, 215 seat frame mounting plate, 2151 first limiting surface, 2152 third limiting surface, 216 seat frame connecting rod 5, 21 61 fourth limiting pin, 217 seat frame connecting rod six, 2171 second waist-shaped hole, 2172 first limiting pin, 22 leg mechanism, 221 leg connecting rod one, 222 leg connecting rod two, 223 leg connecting rod three, 224 leg connecting rod four, 225 footrest mounting plate, 226 safety bracket, 23 backrest mechanism, 231 backrest mounting plate, 2311 second limiting pin, 232 backrest support rod, 3 baffle. DETAILED DESCRIPTION

[0019] 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.

[0020] like Figure 1-5As shown, a push-type iron frame with an adjustable reclining angle of the armrest comprises a base 1, and extension components 2 are installed on both sides of the base. The extension components include a seat frame mechanism 21, and the seat frame mechanism includes a seat frame connecting rod 1 211. The rear end of the seat frame connecting rod 1 is pivoted to the front side of the base, and the front end of the seat frame connecting rod 1 is movably connected to the seat frame connecting rod 212. The bottom end of the seat frame connecting rod 2 is fixedly connected to a fifth limit pin (not shown). The front end of the seat frame connecting rod 1 is provided with a first waist-shaped hole 2111 for the sliding movement of the fifth limit pin. The middle part of the seat frame connecting rod 2 is pivotally connected to the seat frame connecting rod 3 213 and the seat frame connecting rod 4 214 through the same rotating shaft (not shown). The rear end of the seat frame connecting rod 4 is pivoted to the rear side of the base, and the front side of the seat frame connecting rod 4 is fixedly connected to the third limit pin 2141. The base is provided with a second limit pin that cooperates with the third limit pin. Surface 11, when sitting, the third limit pin contacts the second limit surface to prevent the seat frame mounting plate from sinking, the top of the seat frame connecting rod 2 is pivotally connected to the seat frame mounting plate 215, and a leg mechanism 22 is installed between the front side of the seat frame mounting plate and the seat frame connecting rod 3, the leg mechanism includes a leg connecting rod 1 221 and a leg connecting rod 2 222 pivotally connected to the front side of the seat frame mounting plate, the seat frame connecting rod 3 is pivotally connected to the rear side of the leg connecting rod 1, the front end of the leg connecting rod 1 is pivotally connected to the leg connecting rod 3 223, the rear side of the leg connecting rod 3 is pivotally connected to the leg connecting rod 2, the front end of the leg connecting rod 3 is pivotally connected to the leg connecting rod 4 224, the front ends of the leg connecting rod 4 and the leg connecting rod 2 are pivotally connected to the same footrest mounting plate 225, a safety bracket 226 is installed in the middle of the leg connecting rod 3, and a baffle 227 is installed on the safety bracket, and the baffle is installed on the two The space reserved when the leg mechanism is unfolded is blocked by the safety brackets on the two sides to prevent curious children from entering the space reserved when the leg mechanism is unfolded, so as to prevent the user from crushing the child when restoring the iron frame, thereby improving safety. A backrest mechanism 23 is installed between the rear side of the seat frame mounting plate and the rear side of the base. The backrest mechanism includes a backrest mounting plate 231. The front side of the bottom of the backrest mounting plate is pivotally connected to the rear side of the seat frame mounting plate. A second limiting pin 2311 is installed on the front side of the bottom of the backrest mounting plate. A first limiting surface 2151 cooperating with the second limiting pin is provided at the tail end of the seat frame mounting plate. When sitting, the second limiting pin contacts the first limiting surface to prevent the backrest from shaking in this state. The rear side of the bottom of the backrest mounting plate is pivotally connected to the backrest support rod 232. The bottom end of the backrest support rod is pivotally connected to the rear side of the base. The rear side of the seat frame mounting plate is pivotally connected to the seat frame connecting rod. Rod five 216, a fourth limit pin 2161 is installed in the middle of the seat frame connecting rod five, and the seat frame mounting plate is provided with a third limit surface 2152 that cooperates with the fourth limit pin. When lying down, the fourth limit pin contacts the third limit surface to improve the stability of the extension component. The bottom end of the seat frame connecting rod five is pivotally connected to the seat frame connecting rod six 217, and the front side of the seat frame connecting rod six is ​​movably connected to the front side of the base. A second waist-shaped hole 2171 is provided at the front end of the seat frame connecting rod six, and a fifth limit pin (not shown) inserted into the second waist-shaped hole is installed on the front side of the base. A first limit pin 2172 is installed in the middle of the seat frame connecting rod six, and a sliding groove 12 for the first limit pin to slide up and down is provided in the middle of the base. The base is detachably connected to the limit plate 13, and the front end of the limit plate extends to the upper side of the sliding groove to prevent the first limit pin from sliding toward the top wall of the sliding groove.

[0021] The specific working process and principle of the utility model: when the iron frame is changed from the TV posture to the lying posture, the hand pushes the armrest forward with both hands, and the back is used to apply force to the backrest, forcing the backrest to flip backward. The first limit pin moves upward in the slide slot, and the limit plate blocks the first limit pin from moving to the top wall of the slide slot, thereby limiting the extreme reclining angle of the backrest (the angle between the upper edge of the backrest mounting plate and the ground is 43°), preventing the accident of backward tipping when the user with a heavier weight uses it, thereby improving safety. Compared with the user with a lighter weight, the limit plate can be removed, and the first limit pin can reach the top wall of the slide slot after losing the blockage, so as to increase the reclining angle of the backrest (the angle between the upper edge of the backrest mounting plate and the ground is 39°).

Claims

The cam is an adjustable seat cushion, and the rear end of the seat frame is connected to the front of the seat frame by a plurality of levers, and the lever is connected to the rear of the seat frame by a plurality of levers. The base is detachably connected to a limit plate, one end of which extends toward the upper side of the slide slot to prevent the first limit pin from sliding toward the top wall of the slide slot.

2. The push-type iron frame with adjustable reclining angle of the armrest according to claim 1, characterized in that: The leg mechanism includes a leg link 1 and a leg link 2 pivotally connected to the front side of the seat frame mounting plate, a seat frame link 3 pivotally connected to the rear side of the leg link 1, a front end of the leg link 1 is pivotally connected to the leg link 3, a rear side of the leg link 3 is pivotally connected to the leg link 2, a front end of the leg link 3 is pivotally connected to the leg link 4, and the front ends of the leg link 4 and the leg link 2 are pivotally connected to the same footrest mounting plate.

3. The push-type iron frame with adjustable reclining angle of the armrest according to claim 2, characterized in that: A safety bracket is arranged in the middle of the leg connecting rod three, and a baffle is arranged on the safety bracket.

4. The push-type iron frame with adjustable reclining angle of the armrest according to claim 1, characterized in that: The backrest mechanism comprises a backrest mounting plate, the front side of the bottom of the backrest mounting plate is pivotally connected to the rear side of the seat frame mounting plate, the rear side of the bottom of the backrest mounting plate is pivotally connected to a backrest support rod, and the bottom end of the backrest support rod is pivotally connected to the rear side of the base.

5. The push-type iron frame with adjustable reclining angle of the handrail according to claim 4, characterized in that: The backrest mounting plate is provided with a second limiting pin, and the seat frame mounting plate is provided with a first limiting surface matched with the second limiting pin.

Images