Sitting-lying conversion mechanism for connecting upper leaning bed and lower sitting bed

Abstract

The utility model relates to a sitting-lying conversion mechanism for connecting an upper leaning berth and a lower sitting berth, and belongs to the technical field of railway carriage equipment. According to the technical scheme, the bottom end of a first connecting rod (12) and the bottom end of a second connecting rod (13) are hinged to the outer end of the short edge of a lower seat bed (2), the top end of the first connecting rod and the top end of the second connecting rod are hinged to the outer end of the short edge of an upper leaning bed (1), and the first connecting rod (12), the short edge of the lower seat bed (2), the second connecting rod (13) and the short edge of the upper leaning bed (1) form a double-rocker mechanism in a planar four-bar mechanism. The first connecting rod and the second connecting rod serve as double rockers to drive the upper backrest (1) to swing and turn over. The multifunctional sleeping berth has the advantages that the lower berth and the turnover backrest are connected through the four-bar mechanism, sitting and lying conversion of the upper leaning berth and the lower sitting berth is achieved, and when the multifunctional sleeping berth is used as a sleeping berth, the upper leaning berth is turned over to the lower sitting berth and used as a berth face, and transverse space above the lower berth is not occupied; and when the chair is used as a seat, the upper backrest is turned into an inclined backrest, so that the sitting comfort is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a sitting and lying conversion mechanism connecting upper lying back and lower seat, belongs to the field of railway passenger car equipment technology. BACKGROUND

[0002] At present, people's comfort requirements for traveling by train are increasing. The lying back is usually used by passengers for lying, but also used as a seat in holidays or special sections. In order to improve the comfort of passengers sitting on the lying back, a fixed backrest is arranged on the lying back wall above the lower bed. However, the fixed backrest of the prior art is perpendicular to the lower bed and separated from the rear end of the lying surface, and in the case of "lying instead of sitting", the riding experience is greatly different from that of the train passenger seat. At the same time, the fixed backrest also occupies the horizontal space above the lower bed, which also affects the user of the lying back. If the backrest on the lying back wall is changed to a fixed inclined backrest, it will further occupy the limited horizontal space of the lower bed. If the backrest on the lying back wall is changed to a reversible backrest, it can be used as a lying back and a seat. When used as a lying back, the backrest is turned over to the lower bed, and when used as a lying surface, it does not occupy the horizontal space above the lower bed. When used as a seat, the backrest is turned over to an inclined backrest to improve the comfort of sitting. However, how to connect the lower bed (also called lower seat) with the reversible backrest (also called upper lying back) to realize the sitting and lying conversion of the upper lying back and the lower seat is a technical problem to be solved in the field. CONTENT OF THE UTILITY MODEL

[0003] The utility model aims at providing a sitting and lying conversion mechanism connecting upper lying back and lower seat, which connects the lower bed with the reversible backrest by a four-bar mechanism to realize the sitting and lying conversion of the upper lying back and the lower seat. When used as a lying back, the upper lying back is turned over to the lower seat, and when used as a lying surface, it does not occupy the horizontal space above the lower bed. When used as a seat, the upper lying back is turned over to an inclined backrest to improve the comfort of sitting. The above technical problems in the background technology are solved.

[0004] The technical scheme of the utility model is:

[0005] A sitting-lying conversion mechanism for connecting an upper reclining bed and a lower seat bed, comprising an upper reclining bed, a lower seat bed, a connecting rod one and a connecting rod two; the lower seat bed is fixed on a floor and a partition wall of a carriage, the upper reclining bed and the lower seat bed are both rectangular, and the two short edges of the upper reclining bed and the lower seat bed are identical in structure; the short edge outer end of the lower seat bed is connected with the short edge outer end of the upper reclining bed through the connecting rod one and the connecting rod two, the bottom end of the connecting rod one and the connecting rod two are both hinged to the short edge outer end of the lower seat bed, the top end of the connecting rod one and the connecting rod two are both hinged to the short edge outer end of the upper reclining bed, the connecting rod one, the short edge of the lower seat bed, the connecting rod two and the short edge of the upper reclining bed together form a double rocker mechanism in a planar four-bar mechanism, and the connecting rod one and the connecting rod two drive the upper reclining bed to swing and overturn as the double rocker; the connecting rod one and the connecting rod two are both curved towards directions away from each other, and the directions of the connecting rod one and the connecting rod two are opposite, so that interference between the connecting rod one and the connecting rod two is avoided.

[0006] A user rotates the upper reclining bed by hand, when the upper reclining bed swings to be parallel to the lower seat bed and close to the upper surface of the lower seat bed, the upper reclining bed is used together with the lower seat bed as a lying bed, and the back of the upper reclining bed is the lying surface of the lying bed; when the upper reclining bed swings to be close to the partition wall, the upper reclining bed is used together with the lower seat bed as a seat, the lower seat bed is the seat surface of the seat, and the front of the upper reclining bed is inclined backward to be the back of the seat.

[0007] The connecting line of the bottom end of the connecting rod one and the connecting rod two is parallel to the lying surface of the lower seat bed.

[0008] The length of the connecting line of the bottom end of the connecting rod one and the connecting rod two is greater than the length of the connecting line of the top end of the connecting rod one and the connecting rod two.

[0009] Side housings are arranged outside the connecting rod one, the connecting rod two, the outer end of the upper reclining bed and the outer end of the lower seat bed, so that the appearance is kept.

[0010] The two ends of the connecting rod one and the connecting rod two are both hole structures, so that the hinge shafts of the double rockers are conveniently rotated.

[0011] The upper reclining bed and the lower seat bed are connected by the four-bar mechanism, the sitting-lying conversion of the upper reclining bed and the lower seat bed is realized, the upper reclining bed is turned over onto the lower seat bed when the upper reclining bed is used as a lying bed, the horizontal space above the lower seat bed is not occupied, the upper reclining bed is turned over as an inclined back when the upper reclining bed is used as a seat, and the sitting comfort is improved. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 It is a front view of a lying state of an embodiment of the utility model;

[0013] Figure 2 It is a left view of a lying state of an embodiment of the utility model;

[0014] Figure 3 It is a front view of a sitting state of an embodiment of the utility model;

[0015] Figure 4This is a left view of the seated state in an embodiment of this utility model;

[0016] Figure 5 This is a schematic diagram of the structure of connecting rod one and connecting rod two in an embodiment of this utility model;

[0017] Figure 6 This is a schematic diagram of a planar four-bar linkage according to an embodiment of the present invention;

[0018] In the diagram: Upper berth 1, Lower seat berth 2, Berth legs 3, Base frame 4, Side cover 5, Locking mechanism 6, Locking seat 7, Link 1 12, Link 2 13, Partition wall 14, Base plate 15. Detailed Implementation

[0019] The present invention will be further described below with reference to the accompanying drawings and examples.

[0020] A seating / lying conversion mechanism connecting an upper berth and a lower seat berth includes an upper berth 1, a lower seat berth 2, a first connecting rod 12, and a second connecting rod 13. The lower seat berth 2 is fixed to the floor 15 and partition 14 of the carriage. Both the upper berth 1 and the lower seat berth 2 are rectangular, and the two short sides of the upper berth 1 and the lower seat berth 2 have identical structures at their outer ends. The outer ends of the short sides of the lower seat berth 2 are connected to the outer ends of the short sides of the upper berth 1 via the first connecting rod 12 and the second connecting rod 13. The bottom ends of the first connecting rod 12 and the second connecting rod 13 are both connected to the short sides of the lower seat berth 2. The outer ends are hinged, and the top ends of connecting rod 12 and connecting rod 23 are both hinged to the outer ends of the short side of the upper backrest 1. Connecting rod 12, the short side of the lower backrest 2, connecting rod 23 and the short side of the upper backrest 1 together form a double rocker mechanism in a planar four-bar linkage. Connecting rod 12 and connecting rod 23 act as double rockers to drive the upper backrest 1 to swing and flip. Both connecting rod 12 and connecting rod 23 are bent in the direction away from each other, and the bending directions of connecting rod 12 and connecting rod 23 are opposite to avoid mutual interference.

[0021] The user rotates the upper bunk 1 by hand. When the upper bunk 1 swings to be parallel to the lower bunk 2 and close to the upper surface of the lower bunk 2, the upper bunk 1 and the lower bunk 2 are used together as a berth, and the back of the upper bunk 1 is the surface of the berth. When the upper bunk 1 swings to be close to the partition 14, the upper bunk 1 and the lower bunk 2 are used together as a seat, the lower bunk 2 is the seat surface of the seat, and the front of the upper bunk 1 tilts backward to form the back of the seat.

[0022] The line connecting the bottom ends of the connecting rod 12 and the connecting rod 2 is parallel to the surface of the lower seat 2.

[0023] The length of the line connecting the bottom ends of the first connecting rod 12 and the second connecting rod 13 is greater than the length of the line connecting the top ends of the first connecting rod 12 and the second connecting rod 13.

[0024] The connecting rod 12, connecting rod 13, the outer end of the upper pad 1 and the outer end of the lower pad 2 are provided with side covers 5 to maintain aesthetics.

[0025] Both ends of the connecting rod 12 and connecting rod 13 are perforated to facilitate the rotation of the hinge shaft of the double rocker.

[0026] In this embodiment, the lower berth 2 is fixed to the floor 15 and partition 14 of the carriage by the lower base frame 4 and the berth legs 3; a locking mechanism 6 is provided on the partition 14 above the lower berth 2, and a locking seat 7 matching the locking mechanism 6 is provided on the side of the upper berth 1. The locking mechanism 6 and the locking seat 7 cooperate to lock the upper berth 1 on the partition 14 above the lower berth 2.

[0027] The locking mechanism 6 and locking seat 7 are common and work together to lock the upper berth 1 onto the partition wall 14 above the lower berth 2. For example, the locking mechanism 6 and locking seat 7 are a pin and a socket.

[0028] Specific operating steps:

[0029] When it needs to be used as a seat: flip the upper bunk 1 upward so that it moves along the trajectory of the double rocker mechanism. When the upper bunk 1 contacts the partition, the locking mechanism 6 is inserted into the locking seat 7 on one side of the upper bunk 1 to lock the upper bunk 1, thus completing the conversion of the berth from a lying position to a sitting position.

[0030] When used as a sleeper berth: the locking mechanism 6 disengages from the locking seat 7, thereby releasing the lock on the upper berth 1. The upper berth 1 flips downwards along the trajectory of the double rocker mechanism until it contacts the lower seat berth 2, completing the transition of the sleeper berth from a sitting to a sleeping position.

Claims

1. A sitting-lying conversion mechanism connecting an upper bunk and a lower seat, characterized in that: It includes an upper berth (1), a lower berth (2), a connecting rod one (12), and a connecting rod two (13); the lower berth (2) is fixed to the floor plate (15) and the partition wall (14) of the carriage. Both the upper berth (1) and the lower berth (2) are rectangular, and the two short sides of the upper berth (1) and the lower berth (2) have the same structure at their outer ends; the outer ends of the short sides of the lower berth (2) are connected to the outer ends of the short sides of the upper berth (1) through the connecting rod one (12) and the connecting rod two (13). The bottom ends of the connecting rod one (12) and the connecting rod two (13) are connected to the outer ends of the short sides of the lower berth (2). The ends are hinged, and the tops of the first (12) and the second (13) are both hinged to the outer end of the short side of the upper backrest (1). The first (12), the short side of the lower backrest (2), the second (13) and the short side of the upper backrest (1) together form a double rocker mechanism in a planar four-bar linkage. The first (12) and the second (13) act as double rockers to drive the upper backrest (1) to swing and flip. The first (12) and the second (13) are both bent in the direction away from each other, and the bending directions of the first (12) and the second (13) are opposite.

2. The sitting / lying conversion mechanism connecting the upper backrest and the lower seat as described in claim 1, characterized in that: The line connecting the bottom ends of the first connecting rod (12) and the second connecting rod (13) is parallel to the surface of the lower seat (2).

3. The sitting / lying conversion mechanism connecting the upper backrest and the lower seat as described in claim 1, characterized in that: The length of the bottom line connecting the first link (12) and the second link (13) is greater than the length of the top line connecting the first link (12) and the second link (13).

4. The sitting / lying conversion mechanism connecting the upper backrest and the lower seat as described in claim 1, characterized in that: The connecting rod 1 (12), connecting rod 2 (13), the outer end of the upper pad (1) and the outer end of the lower pad (2) are provided with side covers (5).

5. A sitting-lying conversion mechanism connecting an upper backrest and a lower seat according to claim 1, characterized in that: Both ends of the connecting rod one (12) and connecting rod two (13) are perforated structures.

Images