Passenger car seat with foldable backrest

Abstract

The utility model discloses a passenger car seat with a foldable backrest. The passenger car seat comprises a folding mechanism and a torsional spring installed in the folding mechanism. A buffering mechanism is arranged at the bottom of the folding mechanism, and the bottom end of the buffering mechanism is fixedly connected to the inner wall of the base. The folding mechanism comprises a base, a first groove is formed in one side of the interior of the base, and a first cylinder is slidably connected to the interior of the first groove; one end of the first cylinder is fixedly connected with a handle, one end of the handle is rotatably connected with a second cylinder, and one end of the second cylinder is fixedly connected with the base; a second groove is formed in the side, close to the first cylinder, of the handle, a third cylinder is slidably connected into the second groove, a backrest of the seat can be rapidly adjusted by arranging the folding mechanism, the practicability of the backrest can be improved, shaking generated in the automobile running process can be reduced by arranging the buffering mechanism, and the practicability of the automobile is improved. And the comfort of the seat is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile seats, in particular to a passenger car seat with a foldable backrest. Background Art

[0002] In order to increase the trunk space, domestic automobile manufacturers currently usually design the rear seats to be foldable and reclining seats, so that more trunk space can be obtained after the seats are folded and reclined.

[0003] Announcement No. CN218785950U discloses a foldable car seat with high safety performance. A right protective device and a left protective device are arranged on the backrest. The right protective device and the left protective device are adjusted by angle so that the right protective device extends out of the right groove and the left protective device extends out of the left groove. Thus, the waist of the passenger can be supported by the support pads on the left and right protective devices, so as to prevent the passenger from tilting and separating from the seat when the vehicle turns, thereby improving the safety of the seat. However, the patent still has the following problems in actual use:

[0004] Although this foldable car seat with high safety performance supports the waist of the passenger through the support pads on the left and right protective devices to prevent the passenger from tilting and separating from the seat when the vehicle turns, thereby improving the safety of the seat, the front passenger seat will block the front view of the rear passengers, which is not conducive to the rear passengers observing the road conditions. In the event of an emergency, it is difficult for the rear passengers to respond in time, resulting in poor passenger safety. In addition, the space in the car is relatively limited, and it is inconvenient for the rear passengers to work when they need to work urgently.

[0005] A passenger vehicle seat with a foldable backrest is proposed to solve the above-mentioned problems. Utility Model Content

[0006] The purpose of the utility model is to provide a passenger car seat with a foldable backrest to solve the problem proposed in the above-mentioned background technology that the waist of the passenger is currently supported by the support pads on the left and right protective devices to prevent the passenger from tilting and separating from the seat when the vehicle is turning, thereby improving the safety of the seat. However, the co-pilot seat will block the front view of the rear passengers, which is not conducive to the rear passengers observing the road conditions. In the event of an emergency, it is difficult for the rear passengers to respond in time, resulting in poor passenger safety. In addition, the space in the car is relatively limited, making it inconvenient for the rear passengers to work when they need to work urgently.

[0007] To achieve the above-mentioned object, the utility model provides the following technical solutions: a passenger vehicle seat with a foldable backrest, comprising a folding mechanism, and a torsion spring installed inside the folding mechanism;

[0008] A buffer mechanism is provided at the bottom of the folding mechanism, and the bottom end of the buffer mechanism is fixedly connected to the inner wall of the base;

[0009] Also includes:

[0010] The folding mechanism comprises a base, a first groove is formed on one side of the base, and a first cylinder is slidably connected to the inside of the first groove;

[0011] One end of the first cylinder is fixedly connected to a handle, one end of the handle is rotatably connected to a second cylinder, and one end of the second cylinder is fixedly connected to the base;

[0012] A second groove is provided on one side of the handle close to the first cylinder, and a third cylinder is slidably connected inside the second groove.

[0013] Preferably, one end of the third cylinder is fixedly connected to a rack, one end of the rack away from the third cylinder is rotatably connected to the base, one side of the rack is meshingly connected to a gear, and one side of the gear is fixedly connected to the first backrest.

[0014] Preferably, the center position of the bottom of the first backrest is rotatably connected to the second cylinder, a torsion spring is fixedly connected to the outer side of the second cylinder, one end of the torsion spring is fixedly connected to the first backrest, and the end of the first backrest away from the torsion spring is rotatably connected to the second backrest.

[0015] Preferably, a third groove is provided on one side of the second backrest, a threaded rod is rotatably connected inside the third groove, one end of the threaded rod is fixedly connected to a worm wheel, one side of the worm wheel is meshingly connected to a worm, one end of the worm is rotatably connected to the second backrest, the outer side of the threaded rod is threadedly connected to a threaded sleeve, one end of the threaded sleeve is rotatably connected to a support connecting rod, and the end of the support connecting rod away from the threaded sleeve is rotatably connected to the first backrest.

[0016] Preferably, the buffer mechanism includes a seat cushion, and the left and right ends of the bottom side of the seat cushion are fixedly connected to support columns, a sleeve is provided on the outer side of the support column, a first spring is provided inside the sleeve, one end of the first spring is fit-connected to the support column, and damping particles are fixedly connected to the top end of the sleeve, and the inside of the damping particles is slidably connected to the support column.

[0017] Preferably, the outer side of the sleeve is fixedly connected to a bottom plate, the bottom of the bottom plate is fixedly connected to the base, a limiting groove is provided at the center position inside the bottom plate, a guide rod is fixedly connected inside the limiting groove, and a second spring is sleeved at the center position of the outer side of the guide rod.

[0018] Preferably, both left and right ends of the second spring are fittedly connected with a sliding sleeve, the interior of the sliding sleeve is slidably connected to the guide rod, the end of the sliding sleeve away from the second spring is fixedly connected to a particle damper, the top of the sliding sleeve is rotatably connected to a support rod, and the end of the support rod away from the sliding sleeve is rotatably connected to the seat cushion.

[0019] Compared with the prior art, the utility model has the following beneficial effects: the backrest of the passenger car seat with foldable backrest can be quickly adjusted by setting a folding mechanism, thereby improving the practicality of the backrest; and the shaking generated during the driving of the car can be reduced by setting a buffer mechanism, thereby improving the comfort of the seat. The specific contents are as follows:

[0020] 1. The folding mechanism can be provided to quickly adjust the backrest of the seat, thereby improving the practicality of the backrest. The handle is rotated around the second cylinder to drive the first cylinder to move in the first groove, thereby driving the position of the second groove. The cooperation between the second groove and the third cylinder is used to drive the rack to rotate around the base, thereby separating the rack from the gear. The restoring force of the torsion spring after stretching can be used to drive the first backrest to rotate around the second cylinder, thereby adjusting the angle of the backrest. When the rear passengers need to work, the worm is rotated to drive the threaded rod to rotate by the meshing action between the worm and the worm wheel. The threaded action between the threaded rod and the threaded sleeve is used to drive the threaded sleeve to move. The support connecting rod, the first backrest and the second backrest form a triangle, thereby supporting the second backrest to make it flat, thereby forming a temporary desk for easy work.

[0021] 2. By setting up a buffer mechanism, the shaking generated during the driving of the car can be reduced and the comfort of the seat can be improved. The first spring is compressed to reduce a part of the shaking force, and then the first spring makes the support column rise and reset. The support column rises and contacts the damping particles to absorb the rebound force, thereby further playing a buffering role. The sliding sleeve is driven to move on the surface of the guide rod through the support rod, and the second spring is compressed to reduce a part of the shaking force, and then the second spring makes the sliding sleeve move and reset. The two sides of the sliding sleeve move and contact the particle damping to absorb the rebound force, thereby improving the comfort of the seat. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the front cross-section structure of the utility model;

[0023] Figure 2 This is a schematic diagram of the structure of the second backrest in the folded state of the utility model;

[0024] Figure 3 This is a schematic diagram of the internal structure of the base of the utility model;

[0025] Figure 4This is a schematic diagram of the structure of the utility model when the handle is pulled upward;

[0026] Figure 5 For this utility model Figure 2 The enlarged structural diagram at A in the middle;

[0027] Figure 6 For this utility model Figure 2 The enlarged structural diagram of the two locations is shown in the figure.

[0028] In the figure: 1. folding mechanism; 101. base; 102. first groove; 103. first cylinder; 104. handle; 105. second cylinder; 106. second groove; 107. third cylinder; 108. rack; 109. gear; 110. first backrest; 111. torsion spring; 112. second backrest; 113. third groove; 114. threaded rod; 115. worm gear; 116. worm; 117. threaded sleeve; 118. supporting connecting rod; 2. buffer mechanism; 201. seat cushion; 202. supporting column; 203. sleeve; 204. first spring; 205. damping particles; 206. bottom plate; 207. limit groove; 208. guide rod; 209. second spring; 210. sleeve; 211. particle damping; 212. supporting rod. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the implementation regulations described are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] See also Figure 1-6 The utility model provides a technical solution: a foldable backrest passenger car seat, comprising a folding mechanism 1, and a torsion spring 111 installed inside the folding mechanism 1; a buffer mechanism 2 is provided at the bottom of the folding mechanism 1, and the bottom end of the buffer mechanism 2 is fixedly connected to the inner wall of the base 101; the folding mechanism 1 comprises a base 101, a first groove 102 is provided on one side inside the base 101, a first cylinder 103 is slidably connected inside the first groove 102, and the first groove 102 can limit the rotation range of the handle 104 by providing the first groove 102;

[0031] One end of the first cylinder 103 is fixedly connected to a handle 104, one end of the handle 104 is rotatably connected to a second cylinder 105, one end of the second cylinder 105 is fixedly connected to the base 101; a second groove 106 is provided on a side of the handle 104 close to the first cylinder 103, a third cylinder 107 is slidably connected inside the second groove 106, and the second groove 106 can limit the rotation range of the rack 108;

[0032] A rack 108 is fixedly connected to one end of the third cylinder 107, and one end of the rack 108 away from the third cylinder 107 is rotatably connected to the base 101, and one side of the rack 108 is meshedly connected to a gear 109, and one side of the gear 109 is fixedly connected to a first backrest 110, and the meshing action between the rack 108 and the gear 109 is used to fix the angle of the first backrest 110;

[0033] The center position of the bottom of the first backrest 110 is rotatably connected to the second cylinder 105, and a torsion spring 111 is fixedly connected to the outer side of the second cylinder 105. One end of the torsion spring 111 is fixedly connected to the first backrest 110, and one end of the first backrest 110 away from the torsion spring 111 is rotatably connected to the second backrest 112. By providing the torsion spring 111, the first backrest 110 can automatically shrink when no external force is applied;

[0034] A third groove 113 is provided on one side of the second backrest 112, and a threaded rod 114 is rotatably connected inside the third groove 113. A worm wheel 115 is fixedly connected to one end of the threaded rod 114, and a worm 116 is meshedly connected to one side of the worm wheel 115. One end of the worm 116 is rotatably connected to the second backrest 112. A threaded sleeve 117 is threadedly connected to the outer side of the threaded rod 114, and one end of the threaded sleeve 117 is rotatably connected to a supporting connecting rod 118. One end of the supporting connecting rod 118 away from the threaded sleeve 117 is rotatably connected to the first backrest 110. The meshing action between the worm 116 and the worm wheel 115 drives the threaded rod 114 to rotate, and the threaded sleeve 117 is driven to move by the thread action between the threaded rod 114 and the threaded sleeve 117.

[0035] The buffer mechanism 2 includes a seat cushion 201, and the left and right ends of the bottom side of the seat cushion 201 are fixedly connected with support columns 202, and a sleeve 203 is sleeved on the outer side of the support column 202. A first spring 204 is arranged inside the sleeve 203, and one end of the first spring 204 is fitted and connected with the support column 202. The top of the sleeve 203 is fixedly connected with damping particles 205, and the inside of the damping particles 205 is slidably connected with the support column 202. By arranging the damping particles 205, the rebound force of the first spring 204 can be absorbed;

[0036] The outer side of the sleeve 203 is fixedly connected with a bottom plate 206, the bottom of the bottom plate 206 is fixedly connected with the base 101, a limiting groove 207 is provided at the center position inside the bottom plate 206, a guide rod 208 is fixedly connected inside the limiting groove 207, and a second spring 209 is sleeved at the center position outside the guide rod 208. By providing the guide rod 208, the movement range of the sliding sleeve 210 can be limited;

[0037] The left and right ends of the second spring 209 are both fittedly connected with a sliding sleeve 210, the interior of the sliding sleeve 210 is slidably connected to the guide rod 208, the end of the sliding sleeve 210 away from the second spring 209 is fixedly connected to the particle damper 211, the top of the sliding sleeve 210 is rotatably connected to a support rod 212, and the end of the support rod 212 away from the sliding sleeve 210 is rotatably connected to the seat cushion 201. The second spring 209 is compressed to reduce a part of the shaking force, and then the second spring 209 moves the sliding sleeve 210 to reset, and the two sides of the sliding sleeve 210 move to contact the particle damper 211 to absorb the rebound force, thereby improving the comfort of the seat.

[0038] Working principle: Before using this kind of foldable backrest passenger car seat, you need to check the overall condition of the device to make sure it can work normally. Figure 1 - Figure 6 As shown, first, the shaking force generated by the automobile during driving drives the seat cushion 201 to compress the first spring 204 downward, and the first spring 204 is compressed to reduce a part of the shaking force. Then, the first spring 204 causes the support column 202 to rise and reset. The support column 202 rises and contacts the damping particles 205 to absorb the rebound force, thereby further playing a buffering role. Then, the support rod 212 drives the sliding sleeve 210 to move on the surface of the guide rod 208 and compress the second spring 209. The second spring 209 is compressed to reduce a part of the shaking force. Then, the second spring 209 causes the sliding sleeve 210 to move and reset. Both sides of the sliding sleeve 210 move and contact the particle damping 211 to absorb the rebound force, thereby improving the comfort of the seat.

[0039] Secondly, when the angle of the first backrest 110 needs to be adjusted, the handle 104 is first pulled upwards, and the handle 104 is rotated around the second cylinder 105, thereby driving the first cylinder 103 to move in the first groove 102, so that the position of the second groove 106 can be changed, and the second groove 106 and the third cylinder 107 are used to cooperate with each other, so as to drive the rack 108 to rotate around the base 101, so that the rack 108 and the gear 109 can be separated, and at the same time, the restoring force of the torsion spring 111 after being stretched can be used to drive the first backrest 110 to rotate around the second cylinder 105, so that the angle of the backrest can be adjusted;

[0040] Finally, when the rear passengers need to work, they first rotate the worm 116, and use the meshing action between the worm 116 and the worm wheel 115 to drive the threaded rod 114 to rotate, and use the threaded action between the threaded rod 114 and the threaded sleeve 117 to drive the threaded sleeve 117 to move, and use the support connecting rod 118 and the first backrest 110 and the second backrest 112 to form a triangle, so as to support the second backrest 112 and make it flat, so as to form a temporary desk for easy work.

[0041] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A passenger vehicle seat with a foldable backrest, comprising a folding mechanism (1), and a torsion spring (111) installed inside the folding mechanism (1); A buffer mechanism (2) is provided at the bottom of the folding mechanism (1), and the bottom end of the buffer mechanism (2) is fixedly connected to the inner wall of the base (101); It is characterized in that Also includes: The folding mechanism (1) comprises a base (101), a first groove (102) is provided on one side of the interior of the base (101), and a first cylinder (103) is slidably connected inside the first groove (102); One end of the first cylinder (103) is fixedly connected to a handle (104), one end of the handle (104) is rotatably connected to a second cylinder (105), and one end of the second cylinder (105) is fixedly connected to the base (101); A second groove (106) is provided on one side of the handle (104) close to the first cylinder (103), and a third cylinder (107) is slidably connected inside the second groove (106).

2. A passenger vehicle seat with a foldable backrest according to claim 1, characterized in that: One end of the third cylinder (107) is fixedly connected to a rack (108), one end of the rack (108) away from the third cylinder (107) is rotatably connected to the base (101), one side of the rack (108) is meshingly connected to a gear (109), and one side of the gear (109) is fixedly connected to a first backrest (110).

3. A passenger vehicle seat with a foldable backrest according to claim 2, characterized in that: The center position of the bottom of the first backrest (110) is rotatably connected to the second cylinder (105), a torsion spring (111) is fixedly connected to the outer side of the second cylinder (105), one end of the torsion spring (111) is fixedly connected to the first backrest (110), and one end of the first backrest (110) away from the torsion spring (111) is rotatably connected to the second backrest (112).

4. A passenger vehicle seat with a foldable backrest according to claim 3, characterized in that: A third groove (113) is provided on one side of the second backrest (112), and a threaded rod (114) is rotatably connected inside the third groove (113), one end of the threaded rod (114) is fixedly connected to a worm wheel (115), one side of the worm wheel (115) is meshingly connected to a worm (116), one end of the worm (116) is rotatably connected to the second backrest (112), the outer side of the threaded rod (114) is threadedly connected to a threaded sleeve (117), one end of the threaded sleeve (117) is rotatably connected to a support connecting rod (118), and one end of the support connecting rod (118) away from the threaded sleeve (117) is rotatably connected to the first backrest (110).

5. The foldable backrest passenger vehicle seat according to claim 1, characterized in that: The buffer mechanism (2) comprises a seat cushion (201), the left and right ends of the bottom side of the seat cushion (201) are fixedly connected to support columns (202), the outer side of the support column (202) is sleeved with a sleeve (203), the interior of the sleeve (203) is provided with a first spring (204), one end of the first spring (204) is fitted and connected to the support column (202), the top end of the interior of the sleeve (203) is fixedly connected to damping particles (205), and the interior of the damping particles (205) is slidably connected to the support column (202).

6. A passenger vehicle seat with a foldable backrest according to claim 5, characterized in that: The outer side of the sleeve (203) is fixedly connected to a bottom plate (206), the bottom of the bottom plate (206) is fixedly connected to the base (101), a limiting groove (207) is provided at the center position inside the bottom plate (206), a guide rod (208) is fixedly connected inside the limiting groove (207), and a second spring (209) is sleeved at the center position outside the guide rod (208).

7. A passenger vehicle seat with a foldable backrest according to claim 6, characterized in that: The left and right ends of the second spring (209) are both fittedly connected with a sliding sleeve (210), the interior of the sliding sleeve (210) is slidably connected to the guide rod (208), one end of the sliding sleeve (210) away from the second spring (209) is fixedly connected to a particle damper (211), the top of the sliding sleeve (210) is rotatably connected to a support rod (212), and one end of the support rod (212) away from the sliding sleeve (210) is rotatably connected to the seat cushion (201).

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