A seat position adjustment structure and a child safety seat having the same structure

Abstract

This utility model discloses a seat body adjustment structure and a child safety seat with the same structure. The seat body includes a seat body, a backrest, and a seat. The backrest and seat are hinged together. The backrest can move relative to the seat along a set motion trajectory, defined as a first direction. The seat body has an adjustment mechanism. The advantages of this utility model are: the unlocking mechanism moves synchronously with the locking mechanism via a traction rope. The traction rope is located within a guide section, and its first end is guided along a second direction by a first part of the guide section. This allows the unlocking mechanism to be moved out of the position slot of the position plate, enabling the backrest and seat body to move along the first direction, adjusting the angle between the backrest and seat, thus making the infant more comfortable when sitting.

Description

Technical Field

[0001] This utility model relates to the field of child safety seats, and in particular to a seat position adjustment structure and a child safety seat having the structure. Background Technology

[0002] A child safety seat is a child seating device installed and secured inside a vehicle seat. Equipped with a restraint system specifically designed for children, it effectively restrains children in the event of a collision, thus ensuring their safety while traveling in the car. Child safety seats generally used for infants and toddlers in cars are called infant carrier seats. Infant carrier seats typically consist of a seat body (the carrier itself) and a base that allows for permanent fixation to the car seat. The seat body includes the seat frame and backrest.

[0003] The main drawback of most existing infant car seats is that their seat and backrest are designed as a single unit. When adjusting the user's posture, only the tilt angle of the seat relative to the base can be adjusted; because the seat and backrest are integrated, the tilt angle between them cannot be changed. This forces children to maintain a fixed posture for extended periods. Since children of different ages have varying heights and body types, the inability to adjust the tilt angle between the backrest and seat according to the child's size can easily lead to fatigue and reduce comfort.

[0004] Therefore, it is necessary to improve the existing technology. Utility Model Content

[0005] The purpose of this utility model is to address the defects and shortcomings of the existing technology by providing a seat back adjustment structure and a child safety seat with the same structure, which has the advantage of being able to adjust the angle between the seat back and the seat.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A seat body adjustment structure and a child safety seat having the structure, comprising a seat body, the seat body including a backrest and a seat, the backrest and the seat being hinged together, the backrest being capable of moving relative to the seat along a set motion trajectory, the direction of the set motion trajectory being defined as a first direction; The chair body has a gear adjustment mechanism, which includes: A stop plate is fixedly disposed on the seat, and along the first direction, the stop plate is provided with at least two stop grooves; A locking member is movably disposed on the chair back. The direction of movement of the locking member is defined as a second direction. Along the second direction, the locking member can be inserted into or removed from the corresponding stop slot. An elastic element is disposed on the backrest along the second direction, and the elastic element abuts against the locking element, such that the locking element always has a tendency to insert into the corresponding stop groove; An unlocking component is movably disposed on the chair back, and the direction of movement of the unlocking component is defined as a third direction; The traction rope is connected to the locking member via the traction rope. The chair back has a guide portion, through which the traction rope passes. The guide portion enables part of the traction rope to move in the second direction and part to move in the third direction.

[0007] Preferably, the traction rope includes a first end and a second end, the first end is connected to a locking member, the second end is connected to a locking member, and the guide portion includes a first part adjacent to the first end, the first part being capable of guiding at least a portion of the first end to move in a second direction.

[0008] Preferably, the unlocking component includes a sliding plate and a slider, the sliding plate being connected to the traction rope, the slider being fixedly installed on the sliding plate, and the backrest having a first groove extending in a third direction, the slider being slidably engaged within the first groove.

[0009] Preferably, the traction rope includes a wire rope and a wire rope sleeve, with the wire rope sleeve fitted around the outer periphery of the wire rope.

[0010] Preferably, the chair back is provided with a second sliding groove extending in a second direction, the locking member is slidably engaged in the second sliding groove, and the elastic member is installed in the second sliding groove.

[0011] Preferably, the locking member includes a plug plate, the plug plate includes an abutment portion and an insertion portion, the insertion portion is inserted into the stop groove of the stop plate, the plug plate is provided with a connecting groove, the chair back is fixedly provided with a fixing member, the fixing member is slidably engaged with the connecting groove, and the fixing member can limit the travel of the plug plate in the second direction.

[0012] Preferably, one end of the traction rope is provided with a limiting head that cooperates with the locking member, and along the second direction, the abutting part has a first abutting surface, which cooperates with the limiting head for limiting.

[0013] Preferably, the chair back is provided with an arc-shaped groove extending along a first direction, and a guide post is fixedly installed on the stop plate, the guide post slidingly engaging with the arc-shaped groove.

[0014] Preferably, the guide post passes through the arc-shaped groove, and the stop plate is fixedly installed to the seat through the guide post.

[0015] With the above structure, the beneficial effects of this utility model are as follows: In the chair body position adjustment structure and child safety seat of this utility model, the movement of the unlocking member is driven by the traction rope to drive the locking member to move synchronously. The traction rope is set in the guide part, and the first end of the traction rope is guided to move in the second direction through the first part of the guide part, so that the unlocking member can be moved out of the position groove of the position plate, thereby allowing the backrest and the seat to move in the first direction, adjusting the angle between the backrest and the seat, and making the baby more comfortable when sitting. Attached Figure Description

[0016] To more clearly illustrate the specific embodiments of this utility model, the accompanying drawings used in the description of the specific embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a three-dimensional structural schematic diagram of the present invention; Figure 2 for Figure 1 A magnified structural diagram of A in the middle; Figure 3 This is a first-view three-dimensional structural diagram of the chair back of this utility model; Figure 4 This is a second-view three-dimensional structural diagram of the chair back of this utility model; Figure 5 This is a three-dimensional structural diagram of the gear adjustment mechanism of this utility model; Figure 6 This is a three-dimensional structural diagram of the locking component of this utility model; Figure 7 This is a three-dimensional structural diagram of the insert plate of this utility model.

[0018] Figures 1 to 7 The winning number is: 1. Chair back; 100. Guide section; 101. First slide groove; 102. Second slide groove; 103. Arc groove; 104. Insertion hole; 105. Sliding groove; 1001. First part; 1002. Connecting part; 21. Unlocking component; 210. Hook groove; 211. Slide plate; 212. Slider; 213. Handle; 22. Traction rope; 221. Steel wire rope; 222. Steel wire rope sleeve; 223. Hanging ring; 224. Limiting head; 23. Locking component; 230. Insert plate; 2300. Connecting groove; 2301. First groove; 2302. Second groove; 231. Fixing component; 232. Insertion part; 233. Abutment part; 234. Protrusion; 24. Stop plate; 240. Stop groove; 241. Guide post; 3. Elastic component. Detailed Implementation

[0019] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0020] It should be noted that in this utility model, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are mainly for better describing this utility model and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0021] It should be noted that, where there is no conflict, the embodiments and features in the embodiments of this utility model can be combined with each other. The present utility model will now be described in detail with reference to the accompanying drawings and embodiments.

[0022] like Figures 1 to 7 As shown, a seat position adjustment structure and a child safety seat having the structure are disclosed. The seat includes a seat body, which includes a backrest 1 and a seat (not shown in the figure). The backrest 1 and the seat are hinged together by a connecting shaft. The backrest 1 can move relative to the seat along a set motion trajectory. The direction of the set motion trajectory is defined as a first direction, which is the direction in which the backrest 1 rotates around the axis of the connecting shaft. The chair body has a gear adjustment mechanism for adjusting the angle between the backrest 1 and the seat. The gear adjustment mechanism includes an unlocking member 21, a traction rope 22, a locking member 23, a gear plate 24, and an elastic member 3. The gear plate 24 is fixedly installed on the seat. Along the first direction, the gear plate 24 is provided with at least two gear slots 240 arranged along the first direction. The locking member 23 is movably installed on the backrest 1. The moving direction of the locking member 23 is defined as the second direction. Along the second direction, the locking member 23 can be inserted into or removed from the corresponding gear slot 240. The locking member 23 is inserted into the gear slot 240. When the locking member 23 is engaged with different gear slots 240, the angle between the backrest 1 and the seat is also different, thereby realizing the function of adjusting the angle of the backrest 1. The elastic element 3 is disposed on the backrest 1. Along the second direction, the elastic element 3 abuts against the locking element 23. The elastic element 3 makes the locking element 23 always have the tendency to insert into the corresponding stop groove 240. The unlocking element 21 is movably disposed on the backrest 1, and the moving direction of the unlocking element 21 is defined as the third direction. The locking member 23 is connected to the locking member 23 via the traction rope 22. The chair back 1 has a guide part 100, through which the traction rope 22 passes. The guide part 100 enables part of the traction rope 22 to move in a second direction and part to move in a third direction.

[0023] The traction rope 22 includes a first end and a second end. The first end is connected to a locking member 23, and the second end is connected to a locking member 23. The guide part 100 includes a first part 1001, which is adjacent to the first end and can guide the first end to move in a second direction.

[0024] Furthermore, the guide section 100 also has a connecting section 1002, which is arc-shaped and serves to turn the first end of the traction rope 22 to the second direction.

[0025] The chair back 1 is provided with an arc-shaped groove 103 extending in the first direction. The guide post 241 slides in the arc-shaped groove 103. The cooperation between the guide post 241 and the arc-shaped groove 103 can limit the travel of the chair back 1 in the first direction. The arc-shaped groove 103 also serves as a guide. The guide post 241 passes through the arc-shaped groove 103. The stop plate 24 is fixedly installed to the seat through the guide post 241. When force is applied to the unlocking member 21, the locking member 23 is driven to move in the second direction via the traction rope 22, so that it is disengaged from the stop plate 24. Then, the chair back 1 is rotated to move in the first direction, thereby realizing the adjustment of the angle between the chair back 1 and the seat.

[0026] It should be noted that the guide post 241 in this example is a limiting nut, which allows the stop plate 24 to fit against the chair back 1. During the adjustment of the angle between the chair back 1 and the seat, the following potential problem exists: if the operator releases the hand prematurely before the locking member 23 is fully engaged with the stop hole, the locking member 23 will spring back under the action of the elastic member 3. At this time, the resetting locking member 23 will form a rigid abutment with the surface of the stop plate 24, thereby applying an abnormal pushing force to the stop plate 24, causing plastic deformation of the stop plate 24. This deformation will cause the stop plate 24 to disengage from the stop groove 240 during subsequent use. To solve this problem, a limiting nut is used to tightly install the stop plate 24 onto the chair back 1 base, effectively suppressing the occurrence of the above-mentioned failure mode by enhancing structural rigidity.

[0027] The unlocking component 21 includes a sliding plate 211, a slider 212, and a handle 213. The sliding plate 211 is connected to the traction rope 22. The sliding plate 211 and the handle 213 are respectively fixedly installed at both ends of the slider 212. The backrest 1 is provided with a first sliding groove 101 extending in a third direction. The slider 212 is slidably engaged in the first sliding groove 101. In this embodiment, the sliding plate 211 is located above the first sliding groove 101, and the handle 213 is located below the first sliding groove 101. The backrest 1 is provided with a sliding groove 105 for the handle 213 to slide. The sliding groove 105 extends in a third direction. Through the guiding effect of the first sliding groove 101 and the sliding groove 105, the sliding plate 211 can reciprocate along the third direction.

[0028] In this example, the slide 211 has two symmetrical connecting rods. The slide 211 is shaped like a coat hanger in this embodiment. Each of the two connecting rods is connected to a traction rope 22. The backrest 1 has two symmetrical guide parts 100. The traction ropes 22 are respectively set in the corresponding guide parts 100, and the second end of each traction rope 22 is connected to a locking member 23. By setting two sets of symmetrical locking members 23, traction ropes 22 and stop plates 24, the support strength when the locking members and stop plates 24 are engaged is improved. In addition, the two sets of locking members 23 and traction ropes 22 are all driven by the same slide 211.

[0029] The chair back 1 is provided with a second slide groove 102 extending in the second direction. The locking member 23 is slidably engaged with the second slide groove 102. The second slide groove 102 can guide the locking member 23. In addition, the elastic member 3 is installed in the second slide groove 102, so that the second slide groove 102 can limit the installation of the elastic member 3.

[0030] The locking member 23 includes a plug plate 230, which includes an abutment portion 233 and a plug portion 232. The abutment portion 233 and the plug portion 232 are set at a right angle, making the plug plate 230 "L" shaped. The backrest 1 has a plug hole 104 for the plug portion 232 to pass through. The plug portion 232 is plugged into the stop hole of the stop plate 24. The abutment portion 233 is slidably disposed in the second slide groove 102. The plug plate 230 is provided with a connecting groove 2300, which has a first groove portion 2301 and a second groove portion 2302. The width of the first groove portion 2301 is greater than the width of the second groove portion 2302. The backrest 1 is fixedly provided with a fixing member 231, which is slidably engaged with the first groove portion 2301. The fixing member 231 and the first groove portion 2301 cooperate to limit the sliding distance of the plug plate 230 in the second direction.

[0031] In a further optimized design, a protrusion 234 is provided on the first contact surface, which serves as a guide for the installation of the elastic element 3.

[0032] In this embodiment, the traction rope 22 includes a steel wire rope 221 and a steel wire rope sleeve 222. The steel wire rope sleeve 222 is sleeved on the outer periphery of the steel wire rope 221. The steel wire rope sleeve 222 can be bent and adjusted according to the shape of the guide part 100. The steel wire rope sleeve 222 can prevent the steel wire from directly contacting the chair back 1, thereby avoiding friction between the chair back 1 and the steel wire rope 221 that could damage the chair back 1, and can also reduce the friction of the steel wire rope 221 during movement.

[0033] The traction rope 22 has a first connecting end and a second connecting end. The first connecting end of the traction rope 22 is provided with a hanging ring 223, and the slide plate 211 is provided with a hook groove 210. The hanging ring 223 and the hook groove 210 are connected in cooperation. The second connecting end of the traction rope 22 is provided with a limiting head 224. Along the second direction, the abutment part 233 has a first abutment surface and a second abutment surface facing away from each other. The first abutment surface is limited and cooperated with the limiting head 224, and the second abutment surface is abutted and cooperated with one end of the elastic member 3. The slide plate 211 is provided with a hook groove 210, and the second connecting end of the traction rope 22 passes through the second groove 2302 and is connected to the limiting head 224.

[0034] Specific usage instructions: When it is necessary to adjust the angle between the backrest 1 and the seat, the user can hold the handle 213 of the unlocking member 21 and pull the handle 213 outward in a third direction. The handle 213 drives the slider 212 to slide along the first slide groove 101 on the backrest 1, thereby pushing the slide plate 211 to move synchronously in a third direction. The displacement of the slide plate 211 is transmitted to the limiting head 224 of the locking member 23 through the traction rope 22. After the limiting head 224 is pulled by the traction rope 22, it pulls the first abutting surface of the abutting part 233 of the insert plate 230 in a second direction, so that the insert plate 230 slides along the second slide groove 102 and compresses the elastic member 3. At this time, the insertion part 232 of the insert plate 230 gradually exits from the current stop groove 240 of the stop plate 24 until it is completely disengaged. Once the connector 232 disengages from the stop hole, the angle between the backrest 1 and the seat is released, allowing the user to rotate the backrest 1 around its hinge point with the seat. During this process, the guide post 241 on the stop plate 24 slides along the arc-shaped groove 103 on the backrest 1. The concentric and coaxial design of the arc-shaped groove 103 and the rotation trajectory of the backrest 1 provides stable guidance for the rotation of the backrest 1, ensuring that the backrest 1 always adjusts its angle along a predetermined trajectory. When the chair back 1 is rotated to the desired angle, the user releases the handle 213. At this time, the elastic element 3 is no longer compressed, and its elastic restoring force pushes the insert plate 230 back along the second direction. The insertion part 232 of the insert plate 230 automatically aligns with the corresponding angle stop groove 240 on the stop plate 24 and inserts, realizing the insertion engagement. At the same time, the unlocking element 21 resets along the third direction under the reverse pull of the traction rope 22, and the handle 213 returns to its initial position. At this time, the angle between the chair back 1 and the seat is fixed by the engagement of the insertion part 232 and the stop hole, completing the entire stop adjustment operation.

[0035] The seat position adjustment structure and the child safety seat with the same structure of this utility model have the following beneficial effects: First, the design of two sets of symmetrical locking parts 23, traction ropes 22, and stop plates 24 significantly improves the support strength during the insertion and engagement, making the angle of the backrest 1 more stable and effectively avoiding the problem of uneven force distribution that may occur with a single structure, thus ensuring the safety of children when riding. Second, the traction rope 22 adopts a structure in which a steel wire rope 221 is wrapped with a steel wire rope sleeve 222, which not only prevents damage to the backrest 1 caused by direct friction between the steel wire rope 221 and the backrest 1, but also achieves a smooth conversion of the traction direction through the arc-shaped connecting part 1002 of the guide part 100, reducing the resistance of the unlocking operation and making the adjustment process smoother. Furthermore, by using the limiting nut to tightly install the stop plate 24 onto the chair back 1 base, the structural rigidity is enhanced. This successfully solves the problem of plastic deformation of the stop plate 24 caused by the locking part 23 not fully engaging during adjustment, thus avoiding the failure mode of the stop plate 24 detaching from the constraint and improving the long-term reliability of the structure. In addition, the "L"-shaped insert plate 230 design of the locking part 23, in conjunction with the guide of the second slide groove 102 and the limiting effect of the fixing part 231 and the connecting groove 2300, ensures the accuracy of the sliding of the locking part 23 and prevents the insert plate 230 from shifting and affecting the insertion effect. The protrusion 234 on the abutment part 233 plays a guiding role in the installation of the elastic part 3, avoiding the skewing of the elastic part 3 when compressed or reset, and ensuring the stable output of the elastic restoring force. Furthermore, the integrated design of the sliding plate 211, slider 212, and handle 213 of the unlocking component 21, combined with the guidance of the first sliding groove 101 and the sliding groove 105, allows the unlocking operation to slide linearly along a third direction, conforming to ergonomics. Users only need to pull the handle 213 to unlock. After releasing, the elastic element 3 drives the insert plate 230 to automatically reset and insert into the corresponding stop groove 240, achieving automatic locking. The operation is convenient and efficient. Finally, the cooperation between the arc groove 103 and the guide post 241 allows the backrest 1 to move along a predetermined trajectory when rotating, ensuring the alignment accuracy of the stop groove 240 and the insertion part 232, avoiding jamming or misalignment during the adjustment process, and further improving the smoothness and accuracy of angle adjustment.

[0036] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this utility model.

Claims

1. A chair body blocking position adjusting structure comprising a chair body including a chair back (1) and a chair seat, characterized in that, The backrest (1) and the seat are hinged together. The backrest (1) can move relative to the seat along a set motion trajectory. The direction of the set motion trajectory is defined as the first direction. The chair body has a gear adjustment mechanism, which includes: A stop plate (24) is fixedly disposed on the seat. Along the first direction, the stop plate (24) is provided with at least two stop grooves (240). A locking member (23) is movably disposed on the backrest (1). The moving direction of the locking member (23) is defined as a second direction. Along the second direction, the locking member (23) can be inserted into the corresponding stop groove (240) or moved out of the corresponding stop groove (240). An elastic element (3) is disposed on the backrest (1) along the second direction, the elastic element (3) abuts against the locking element (23), and the elastic element (3) makes the locking element (23) always have the tendency to insert into the corresponding stop groove (240); Unlocking component (21), the unlocking component (21) is movably disposed on the backrest (1), and the moving direction of the unlocking component (21) is defined as the third direction; The traction rope (22) is connected to the locking member (23) via the traction rope (22). The chair back (1) has a guide portion (100), through which the traction rope (22) passes. The guide portion (100) enables part of the traction rope (22) to move in the second direction and part to move in the third direction.

2. The chair body position adjusting structure according to claim 1, characterized in that: The traction rope (22) includes a first end and a second end, the first end is connected to a locking member (23), the second end is connected to a locking member (23), and the guide (100) includes a first part (1001) adjacent to the first end, the first part (1001) being able to guide at least a portion of the first end to move in a second direction.

3. The chair body position adjusting structure according to claim 1, characterized in that: The unlocking component (21) includes a sliding plate (211) and a slider (212). The sliding plate (211) is connected to the traction rope (22). The slider (212) is fixedly installed on the sliding plate (211). The backrest (1) is provided with a first groove (101) extending in a third direction. The slider (212) is slidably engaged in the first groove (101).

4. The chair body position adjusting structure according to claim 1, characterized in that: The traction rope (22) includes a wire rope (221) and a wire rope sleeve (222), the wire rope sleeve (222) being fitted around the outer periphery of the wire rope (221).

5. The chair body position adjusting structure according to claim 1, characterized in that: The chair back (1) is provided with a second slide groove (102) extending in a second direction, the locking member (23) is slidably engaged in the second slide groove (102), and the elastic member (3) is installed in the second slide groove (102).

6. The chair body position adjusting structure according to claim 5, characterized in that: The locking member (23) includes a plug plate (230), the plug plate (230) includes an abutment part (233) and a plug part (232), the plug part (232) is plugged into the stop groove (240) of the stop plate (24), the plug plate (230) is provided with a connecting groove (2300), the backrest (1) is fixedly provided with a fixing member (231), the fixing member (231) is slidably engaged with the connecting groove (2300), and the fixing member (231) can limit the travel of the plug plate (230) in the second direction.

7. The chair body position adjustment structure according to claim 6, characterized in that: One end of the traction rope (22) is provided with a limiting head (224) that cooperates with the locking member (23). Along the second direction, the abutting part (233) has a first abutting surface, which is limited and cooperates with the limiting head (224).

8. The chair body position adjustment structure according to claim 1, characterized in that: The chair back (1) is provided with an arc-shaped groove (103) extending along a first direction, and a guide post (241) is fixedly installed on the stop plate (24), and the guide post (241) slides in cooperation with the arc-shaped groove (103).

9. The chair body position adjustment structure according to claim 8, characterized in that: The guide post (241) passes through the arc groove (103) and the stop plate (24) is fixedly installed to the seat through the guide post (241).

10. A child safety seat, characterized in that: The child safety seat has a seat position adjustment structure as described in any one of claims 1-9.

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