Folding child safety seat with detachable seat back

Abstract

The utility model discloses a foldable child safety seat with a detachable seat back, which belongs to the technical field of child safety seats and comprises the seat back and a movable base, the seat back is connected with the movable base, a clamping hook is arranged below the seat back, an opening is arranged on the clamping hook, and a support is arranged at one end of the movable base close to the seat back. The child safety seat is characterized in that a clamping hook is arranged on the movable base, a mounting shaft is arranged between every two supports, two opposite planes are machined on the portion, close to the supports, of each mounting shaft, the distance between the two planes is equal to the width of an opening in the clamping hook, and the seat back is rotationally mounted on the movable base through the clamping hook. Space is saved, manufacturing cost is low, and adjustment is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of child safety seats, in particular to a folding child safety seat with a detachable backrest. Background Art

[0002] A child safety seat is a seat that protects the safety of infants and young children. It is generally placed on the car seat for use. The child safety seats currently used on the market are generally in an integrated form, which takes up a large space and cannot adjust the angle of the seat back according to usage requirements. In the prior art, an invention patent application with publication number CN108621880A discloses a child safety seat, which adjusts the angle and position of the seat by setting a sliding bearing part and a rotating platform. However, the seat and the seat back of this technical solution are integrated into one, and the seat back angle cannot be adjusted. It cannot be stored when not in use, and takes up a large space. In response to the above technical problems, the present invention proposes a folding child safety seat with a detachable seat back. Summary of the Invention

[0003] In response to the above technical problems, the technical solution adopted by the utility model is: a folding child safety seat with a detachable backrest, comprising a backrest and a movable base, the backrest being connected to the movable base, a hook being provided under the backrest, an opening being provided on the hook, a support being provided at one end of the movable base close to the backrest, an installation shaft being provided between every two supports, and two opposite planes being processed on the part of each installation shaft close to the support, the distance between the two planes being equal to the width of the opening on the hook, and the backrest being rotatably mounted on the movable base by the hook.

[0004] Furthermore, a protrusion is provided below the hook, and a first limiting rib and a second limiting rib are provided on the movable base at a position below the mounting shaft, the second limiting rib is higher than the first limiting rib, and the first limiting rib and the second limiting rib cooperate with the protrusion to realize the limitation of the rotation angle of the chair back; the first limiting rib includes an inner side surface of the first limiting rib and an upper side surface of the first limiting rib, the second limiting rib includes an outer side surface of the second limiting rib and an inner side surface of the second limiting rib, the outer side surface of the second limiting rib is set as an inclined surface, the protrusion includes a first limiting surface and a second limiting surface, and the height of the second limiting surface is less than the height of the first limiting surface.

[0005] Furthermore, when installing the chair back on the movable base, first place the chair back parallel to the movable base, align the opening structure on the hook with the installation axis, press down, and put the hook on the installation axis. At this time, the protrusion is located on the side close to the second limiting rib. Stand the chair back upward, and rotate the protrusion around the installation axis. The second limiting surface on the protrusion first contacts the outer surface of the second limiting rib. As the protrusion deforms, the protrusion passes over the second limiting rib and enters between the first limiting rib and the second limiting rib.

[0006] Furthermore, when the first limiting surface contacts the inner side surface of the second limiting rib, it is used to limit the maximum opening angle between the chair back and the movable base; when the second limiting surface contacts the inner side surface of the first limiting rib, it is used to limit the minimum opening angle between the chair back and the movable base.

[0007] Furthermore, when the chair back is folded relative to the movable base, the second limiting surface first contacts the inner surface of the first limiting rib. As the protrusion deforms, the protrusion passes over the first limiting rib and comes to the side close to the first limiting rib. Armrests are respectively provided on both sides of the movable base. When the chair back is folded above the movable base, the armrests are supported on the inner side of the chair back.

[0008] The support base is fixedly mounted on the vehicle seat, wherein the fixed base is provided with a slide and a limit plate inside the fixed base, the slide comprises an upper surface of the slide and a side surface of the slide, the limit plate comprises a lower stop surface of the stop plate and a side stop surface of the stop plate, and the bottom of the movable base is provided with a support base, the support base comprises a vertical portion of the support base and a horizontal portion of the support base, the horizontal portion of the support base is vertically arranged below the vertical portion of the support base, the vertical portion of the support base comprises an inner side surface of the support base and a bottom surface of the support base, the horizontal portion of the support base comprises an upper stop surface of the support base and a side stop surface of the support base, the inner side surface of the support base contacts the side surface of the slide, the side stop surface of the support base contacts the side stop surface of the limit plate, for realizing limiting the movable base and the fixed base in the left and right directions, the bottom surface of the support base contacts the upper surface of the slide, and the upper stop surface of the support base contacts the lower stop surface of the limit plate, for realizing limiting the fixed base and the movable base in the vertical direction.

[0009] Furthermore, two vertical slide grooves are provided inside the movable base, and baffle rods are slidably installed on the two vertical slide grooves. The sliding direction of the baffle rod on the vertical slide groove is perpendicular to the surface of the movable base. A mounting plate is provided on the lower surface of the movable base, and a sliding plate is slidably installed between the mounting plate and the movable base body. A guide groove is provided on the sliding plate, and the baffle rod is provided inside the guide groove. The angle between the guide groove and the vertical slide groove is greater than 0° and less than 90°. A handle is connected to the end of the sliding plate, and a return spring is provided between the handle and the mounting plate. A positioning plate is provided above the fixed base, and a number of slots are provided on the positioning plate. The positioning plate and the baffle rod cooperate to realize the positioning of the fixed base and the movable base.

[0010] Furthermore, limiting grooves are provided on both sides above the fixed base, and limiting posts are provided on both sides below the movable base, and the limiting posts are slidably installed inside the limiting grooves.

[0011] Compared with the prior art, the present invention has the following advantages: (1) the backrest of the child safety seat disclosed in the present invention can be disassembled and folded when not in use, and the angle of the backrest can be adjusted, which is convenient for users to meet various usage needs, saves space and increases the adaptability; (2) the backrest of the present invention limits the adjustment angle of the backrest through the protrusion, the first limiting rib and the second limiting rib, and has a simple structure, easy operation and convenient manufacturing; (3) the movable base of the present invention can slide on the fixed base and is fixed by the limiting groove, and the limiting groove and the fixed base are integrated to facilitate adjustment. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a structural diagram of the utility model in which the chair back and the movable base are separated.

[0013] Figure 2 It is a structural schematic diagram of the movable base and the fixed base of the utility model.

[0014] Figure 3 for Figure 2 Cross-sectional view in the AA direction.

[0015] Figure 4 for Figure 3 A partial enlarged schematic diagram of point A in the middle.

[0016] Figure 5 This is a structural diagram of the utility model when the chair back is installed.

[0017] Figure 6 for Figure 5 A partial enlarged schematic diagram of point B in the middle.

[0018] Figure 7 This is a structural diagram of the utility model when the chair back is at the minimum opening angle.

[0019] Figure 8 for Figure 7 A partial enlarged schematic diagram of point C in the middle.

[0020] Figure 9 This is a structural schematic diagram of the utility model when the chair back is at the maximum opening angle.

[0021] Figure 10 for Figure 9 A partial enlarged schematic diagram of point D in the middle.

[0022] Figure 11 This is a cross-sectional view of the utility model when the chair back is folded.

[0023] Figure 12 for Figure 11 A partial enlarged schematic diagram of point E in the middle.

[0024] Figure 13 This is a structural diagram of the utility model when the chair back is folded.

[0025] Figure 14 This is a schematic diagram of the structure of the utility model when viewed from above after the fixed base is removed.

[0026] Figure 15 for Figure 14 A partial enlarged schematic diagram of point F in the middle.

[0027] Figure 16 This is a schematic diagram of the fixed base structure of the utility model.

[0028] Figure numbers: 101-backrest; 102-hook; 103-bump; 1031-first limiting surface; 1032-second limiting surface; 201-fixed base; 202-movable base; 203-armrest; 204-support; 205-installation axis; 206-support seat vertical part; 2061-support seat inner side; 2062-support seat bottom; 207-support seat horizontal part; 2071-support seat upper stop surface; 2072-support seat side stop surface; 208-slide; 2081-slide top; 2082-slide side; 20 9-limiting plate; 2091-limiting plate lower stop surface; 2092-limiting plate side stop surface; 210-first limiting rib; 2101-inner surface of the first limiting rib; 2102-upper surface of the first limiting rib; 211-second limiting rib; 2111-outer surface of the second limiting rib; 2112-inner surface of the second limiting rib; 212-blocking rod; 213-vertical slide; 214-sliding plate; 215-guide groove; 216-mounting plate; 217-handle; 218-reset spring; 219-limiting column; 220-limiting groove; 221-positioning plate. DETAILED DESCRIPTION

[0029] The specific implementation of the present invention will be further described below with reference to the accompanying drawings.

[0030] Example: Reference Figures 1-16 A folding child safety seat with a detachable backrest includes a backrest 101 and a movable base 202. The backrest 101 is connected to the movable base 202. A hook 102 is provided under the backrest 101. The hook 102 is provided with an opening. A support 204 is provided at one end of the movable base 202 close to the backrest 101. An installation shaft 205 is provided between every two supports 204. The part of each installation shaft 205 close to the support 204 is processed with two opposite planes. The distance between the two planes is equal to the width of the opening on the hook 102. The backrest 101 is rotatably installed on the movable base 202 through the hook 102.

[0031] refer to Figure 5-Figure 13A protrusion 103 is provided below the hook 102, and a first limiting rib 210 and a second limiting rib 211 are provided on the movable base 202 at a position below the mounting shaft 205. The second limiting rib 211 is higher than the first limiting rib 210. The first limiting rib 210 and the second limiting rib 211 cooperate with the protrusion 103 to limit the rotation angle of the chair back 101; the first limiting rib 210 includes an inner side surface 2101 of the first limiting rib and an upper side surface 2102 of the first limiting rib, the second limiting rib 211 includes an outer side surface 2111 of the second limiting rib and an inner side surface 2112 of the second limiting rib, the outer side surface 2111 of the second limiting rib is set as an inclined surface, the protrusion 103 includes a first limiting surface 1031 and a second limiting surface 1032, and the height of the second limiting surface 1032 is less than the height of the first limiting surface 1031.

[0032] refer to Figure 5-Figure 13 When installing the chair back 101 on the movable base 202, first place the chair back 101 parallel to the movable base 202, align the opening structure on the hook 102 with the installation shaft 205, press down, and put the hook 102 on the installation shaft 205. At this time, the protrusion 103 is located on the side close to the second limiting rib 211. Stand the chair back 101 upward, and the protrusion 103 rotates around the installation shaft 205. The second limiting surface 1032 on the protrusion 103 first contacts the outer surface 2111 of the second limiting rib. As the protrusion 103 deforms, the protrusion 103 passes over the second limiting rib 211 and enters between the first limiting rib 210 and the second limiting rib 211. The protrusion 103 is set to PP material.

[0033] refer to Figure 5-Figure 13 When the first limiting surface 1031 contacts the inner side surface 2112 of the second limiting rib, it is used to limit the maximum opening angle between the chair back 101 and the movable base 202. When the second limiting surface 1032 contacts the inner side surface 2101 of the first limiting rib, it is used to limit the minimum opening angle between the chair back 101 and the movable base 202. In this embodiment, the maximum opening angle between the chair back 101 and the movable base 202 is 180°, and the minimum opening angle between the chair back 101 and the movable base 202 is 81°.

[0034] refer to Figure 5-Figure 13 When the chair back 101 is folded relative to the movable base 202, the second limiting surface 1032 first contacts the inner surface 2101 of the first limiting rib. As the protrusion 103 deforms, the protrusion 103 passes over the first limiting rib 210 and comes to the side close to the first limiting rib 210. Armrests 203 are respectively provided on both sides of the movable base 202. When the chair back 101 is folded above the movable base 202, the armrests 203 are supported on the inner side of the chair back 101.

[0035] refer to Figures 1-4 、 Figure 14-16The child seat also includes a fixed base 201, which is fixedly installed on the car seat. A slide 208 and a limit plate 209 are provided inside the fixed base 201. The slide 208 includes a slide top 2081 and a slide side 2082. The limit plate 209 includes a limit plate lower stop surface 2091 and a limit plate side stop surface 2092. A support seat is provided at the bottom of the movable base 202. The support seat includes a support seat vertical portion 206 and a support seat horizontal portion 207. The support seat horizontal portion 207 is vertically arranged below the support seat vertical portion 206. The support seat vertical portion 206 includes a support seat The inner side surface 2061 and the bottom surface 2062 of the support seat, the horizontal part 207 of the support seat includes an upper block surface 2071 of the support seat and a side block surface 2072 of the support seat, the inner side surface 2061 of the support seat is in contact with the side surface 2082 of the slide, and the side block surface 2072 of the support seat is in contact with the side block surface 2092 of the limit plate, which is used to realize the limitation of the movable base 202 and the fixed base 201 in the left and right directions, the bottom surface 2062 of the support seat is in contact with the upper surface 2081 of the slide, and the upper block surface 2071 of the support seat is in contact with the lower block surface 2091 of the limit plate, which is used to realize the limitation of the fixed base 201 and the movable base 202 in the vertical direction.

[0036] refer to Figures 1-4 、 Figure 14-16 The movable base 202 is provided with two vertical slide grooves 213 inside, and a blocking rod 212 is slidably installed on the two vertical slide grooves 213. The sliding direction of the blocking rod 212 on the vertical slide groove 213 is perpendicular to the surface of the movable base 202. A mounting plate 216 is provided on the lower surface of the movable base 202. A sliding plate 214 is slidably installed between the mounting plate 216 and the main body of the movable base 202. A guide groove 215 is provided on the sliding plate 214. The blocking rod 212 is arranged inside the guide groove 215. The guide groove 215 is perpendicular to the guide groove 215. The angle between the vertical slide grooves 213 is greater than 0° and less than 90°. In this embodiment, the angle between the guide groove 215 and the vertical slide groove 213 is set to 57°. The end of the sliding plate 214 is connected to a handle 217. A return spring 218 is provided between the handle 217 and the mounting plate 216. A positioning plate 221 is provided above the fixed base 201. A plurality of card slots are provided on the positioning plate 221. The positioning plate 221 cooperates with the blocking rod 212 to realize the positioning of the fixed base 201 and the movable base 202.

[0037] refer to Figures 1-4 、 Figure 14-16 Limiting grooves 220 are provided on both sides above the fixed base 201 , and limiting columns 219 are provided on both sides below the movable base 202 , respectively. The limiting columns 219 are slidably installed inside the limiting grooves 220 .

[0038] The method of using the child safety seat disclosed in the present utility model is as follows: when installing, place the seat back 101 parallel to the movable base 202, align the opening structure on the hook 102 with the installation shaft 205, press downward, and put the hook 102 on the installation shaft 205. After pressing into place, stand the seat back 101 upward, and the protrusion 103 rotates around the installation shaft 205. The protrusion 103 passes over the second limiting rib 211 and enters between the first limiting rib 210 and the second limiting rib 211. Adjust the angle between the seat back 101 and the movable base 202 until the seat back 101 rests on the car seat. When the seat is not in use, you only need to press the seat back 101 downward and fold it above the movable base 202.

[0039] When the relative position between the movable base 202 and the fixed base 201 is adjusted, the handle 217 is pulled, and the handle 217 drives the sliding plate 214 to slide on the mounting plate 216, and the guide groove 215 on the sliding plate 214 drives the blocking rod 212 to slide on the vertical sliding groove 213 in the direction away from the fixed base 201, and the blocking rod 212 disengages from the card slot on the positioning plate 221, and the fixed base 201 and the movable base 202 are unlocked, and the movable base 202 is pulled so that the movable base 202 slides on the fixed base 201 to the desired position. After the position is adjusted, the handle 217 is released, and under the action of the return spring 218, the sliding plate 214 slides in the opposite direction, and the blocking rod 212 slides downward on the vertical sliding groove 213, and the blocking rod 212 enters the card slot on the positioning plate 221, and the locking between the fixed base 201 and the movable base 202 is realized again.

Claims

1. A foldable child safety seat with a detachable backrest, characterized in that: The invention comprises a chair back (101) and a movable base (202), wherein the chair back (101) is connected to the movable base (202), a hook (102) is arranged below the chair back (101), an opening is arranged on the hook (102), a support (204) is arranged at one end of the movable base (202) close to the chair back (101), an installation shaft (205) is arranged between every two supports (204), and a part of each installation shaft (205) close to the support (204) is processed with two opposite planes, and the distance between the two planes is equal to the width of the opening on the hook (102), and the chair back (101) is rotatably installed on the movable base (202) through the hook (102).

2. A foldable child safety seat with a detachable backrest according to claim 1, characterized in that: A protrusion (103) is arranged below the hook (102); a first limiting rib (210) and a second limiting rib (211) are arranged on the movable base (202) at a position below the mounting shaft (205); the second limiting rib (211) is higher than the first limiting rib (210); the first limiting rib (210) and the second limiting rib (211) cooperate with the protrusion (103) to limit the rotation angle of the chair back (101); the first limiting rib (210) The invention comprises a first limiting rib inner side surface (2101) and a first limiting rib upper side surface (2102); the second limiting rib (211) comprises a second limiting rib outer side surface (2111) and a second limiting rib inner side surface (2112); the second limiting rib outer side surface (2111) is arranged as an inclined surface; the protrusion (103) comprises a first limiting surface (1031) and a second limiting surface (1032); the height of the second limiting surface (1032) is smaller than the height of the first limiting surface (1031).

3. A foldable child safety seat with a detachable backrest according to claim 2, characterized in that: When the chair back (101) is installed on the movable base (202), the chair back (101) and the movable base (202) are first placed parallel to each other, the opening structure on the hook (102) is aligned with the installation shaft (205), and the hook (102) is pressed downward to sleeve the hook (102) on the installation shaft (205). At this time, the protrusion (103) is located on the side close to the second limiting rib (211), the chair back (101) is erected upward, the protrusion (103) rotates around the installation shaft (205), and the second limiting surface (1032) on the protrusion (103) first contacts the outer side surface (2111) of the second limiting rib. As the protrusion (103) is deformed, the protrusion (103) passes over the second limiting rib (211) and enters between the first limiting rib (210) and the second limiting rib (211).

4. The foldable child safety seat with a detachable backrest according to claim 2, characterized in that: When the first limiting surface (1031) contacts the inner side surface (2112) of the second limiting rib, it is used to limit the maximum opening angle between the chair back (101) and the movable base (202); when the second limiting surface (1032) contacts the inner side surface (2101) of the first limiting rib, it is used to limit the minimum opening angle between the chair back (101) and the movable base (202).

5. The foldable child safety seat with a detachable backrest according to claim 2, characterized in that: When the chair back (101) is folded relative to the movable base (202), the second limiting surface (1032) first contacts the inner side surface (2101) of the first limiting rib, and as the protrusion (103) is deformed, the protrusion (103) passes over the first limiting rib (210) and comes to a side close to the first limiting rib (210). Armrests (203) are respectively provided on both sides of the movable base (202). When the chair back (101) is folded above the movable base (202), the armrests (203) are supported on the inner side of the chair back (101).

6. The foldable child safety seat with a detachable backrest according to claim 2, characterized in that: The child safety seat also includes a fixed base (201), which is fixedly installed on the car seat. A slideway (208) and a limit plate (209) are arranged inside the fixed base (201). The slideway (208) includes a slideway top surface (2081) and a slideway side surface (2082). The limit plate (209) includes a limit plate lower stop surface (2091) and a limit plate side stop surface (2092). A support seat is arranged at the bottom of the movable base (202). The support seat includes a support seat vertical portion (206) and a support seat horizontal portion (207). The support seat horizontal portion (207) is vertically arranged below the support seat vertical portion (206). The support seat vertical portion (206) is provided at the bottom of the movable base (202). ) comprises an inner side surface (2061) of a support seat and a bottom surface (2062) of a support seat, and the horizontal portion (207) of the support seat comprises an upper stop surface (2071) of the support seat and a side stop surface (2072) of the support seat, the inner side surface (2061) of the support seat contacts the side surface (2082) of the slideway, and the side stop surface (2072) of the support seat contacts the side stop surface (2092) of the limiting plate, so as to realize the limitation of the movable base (202) and the fixed base (201) in the left and right directions, the bottom surface (2062) of the support seat contacts the upper surface (2081) of the slideway, and the upper stop surface (2071) of the support seat contacts the lower stop surface (2091) of the limiting plate, so as to realize the limitation of the fixed base (201) and the movable base (202) in the vertical direction.

7. The foldable child safety seat with a detachable backrest according to claim 6, characterized in that: The movable base (202) is provided with two vertical slide grooves (213) inside, and a blocking rod (212) is slidably installed on the two vertical slide grooves (213), and the sliding direction of the blocking rod (212) on the vertical slide groove (213) is perpendicular to the surface of the movable base (202), and a mounting plate (216) is provided on the lower surface of the movable base (202), and a sliding plate (214) is slidably installed between the mounting plate (216) and the main body of the movable base (202), and a guide groove (215) is provided on the sliding plate (214), and the blocking rod (212) is provided with a guide groove (215). The sliding plate (214) is arranged inside the guide groove (215), and the angle between the guide groove (215) and the vertical slide groove (213) is greater than 0° and less than 90°. The end of the sliding plate (214) is connected with a handle (217), and a return spring (218) is arranged between the handle (217) and the mounting plate (216). A positioning plate (221) is arranged above the fixed base (201), and a plurality of slots are arranged on the positioning plate (221). The positioning plate (221) cooperates with the blocking rod (212) to realize the positioning of the fixed base (201) and the movable base (202).

8. The foldable child safety seat with a detachable backrest according to claim 6, characterized in that: Limiting grooves (220) are arranged on both sides above the fixed base (201), and limiting columns (219) are arranged on both sides below the movable base (202), and the limiting columns (219) are slidably installed inside the limiting grooves (220).

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