Headrest adjustment device for child seat

Abstract

The present invention relates to a headrest adjustment device for a child seat, characterized in that the adjustment device comprises a headrest adjustment handle (1), a headrest adjustment back plate (2), a return spring (3), a locking structure (4), a safety belt (5), a safety belt support shaft inner shell (6), and a safety belt support shaft outer shell (7); the headrest position of the child seat can be adjusted by the headrest adjustment handle according to the actual growth of the child's body to achieve a perfect fit with the child's body, the protection is effective and comprehensive, and the comfort of the child's head and neck is improved, replacing the defect in the prior art that the middle position of each gear position of the child seat headrest cannot perfectly fit with the child's body.

Description

Technical Field

[0001] The invention relates to the technical field of child seats, and in particular to a headrest adjustment device for a child seat. Background Art

[0002] In the prior art, in order to adapt to the physical needs of children in different growth stages, child safety seat headrest adjustment devices with multi-level adjustment have appeared. Although the child seat can be adjusted in multiple levels to fit each stage of the child's growth as closely as possible, it is still impossible to make the headrest device fully fit the child's body at every stage of the child's growth to effectively protect the head and neck. When the infant's head and cervical spine are not fully fitted with the headrest adjustment device in the middle position of each level, there is still a risk of accidental injury. Summary of the invention

[0003] In order to solve the defects and shortcomings in the above-mentioned prior art, the present invention provides a headrest adjustment device for a child seat.

[0004] The technical solution for which the present invention seeks protection is as follows:

[0005] A headrest adjustment device for a child seat, characterized in that the adjustment device comprises a headrest adjustment handle, a headrest adjustment back plate, a return spring, a locking structure, a safety belt, a safety belt support shaft inner shell, and a safety belt support shaft outer shell; wherein,

[0006] A connecting plate is protruding from the upper surface of the headrest adjustment handle, a connecting hole is opened in the middle of the connecting plate, a connecting column is arranged at the front end of the headrest adjustment back plate, the connecting column passes through the bottom of the connecting hole and passes through the top of the connecting hole, a return spring receiving hole is opened on the connecting plate at the left and right sides of the connecting hole, a return spring is installed inside the return spring receiving hole, and a front paddle and a rear paddle are protruding downwardly from the lower surface of the headrest adjustment handle;

[0007] The locking structure is disposed below the lower surface of the headrest adjustment handle and includes a front locking structure cooperating with the front paddle and a rear locking structure cooperating with the rear paddle;

[0008] The seat belt support shaft inner shell and the seat belt support shaft outer shell are installed below the locking structure, the seat belt is passed through the interior of the locking structure, and the seat belt support shaft outer shell is installed below the seat belt support shaft inner shell. When the locking structure is in a locked state, the locking structure is stationary relative to the seat belt, and when the locking structure is in an unlocked state, the locking structure moves back and forth relative to the seat belt.

[0009] Further, in the front-rear direction, the connecting column has a movable stroke inside the connecting hole.

[0010] Further, the return spring installed in the return spring receiving hole opened on one side is arranged close to the bottom, and the return spring installed in the return spring receiving hole opened on the other side is arranged close to the top.

[0011] Furthermore, the front paddle and the rear paddle are respectively arranged as inclined structures along the front-to-back direction.

[0012] Furthermore, the front locking structure includes a front stop slider support plate, a front stop slider, a front flat-head rivet, a front locking tooth, and a front torsion spring; the front flat-head rivet passes through the left and right sides of the front stop slider support plate, the middle part of the front stop slider is hinged to the front flat-head rivet, the lower end of the front stop slider is fixedly connected to the front locking tooth, the front stop slider is arranged inside the front stop slider support plate, and when the front paddle contacts the upper end of the front stop slider, the front stop slider rotates around the front flat-head rivet and drives the front locking tooth to disengage from the seat belt, and the front torsion spring is arranged inside the front stop slider support plate and is externally mounted on the front flat-head rivet.

[0013] Furthermore, the rear locking structure includes a rear stop slider support plate, a rear stop slider, a rear flat-head rivet, a rear locking tooth, and a rear torsion spring; the rear flat-head rivet passes through the left and right sides of the rear stop slider support plate, the middle part of the rear stop slider is hinged to the rear flat-head rivet, the lower end of the rear stop slider is fixedly connected to the rear locking tooth, the rear stop slider is arranged inside the rear stop slider support plate, and when the rear paddle contacts the upper end of the rear stop slider, the rear stop slider rotates around the rear flat-head rivet and drives the rear locking tooth to disengage from the seat belt, and the rear torsion spring is arranged inside the rear stop slider support plate and is jacketed on the rear flat-head rivet.

[0014] Furthermore, the front stop slider and the rear stop slider are respectively configured to be L-shaped.

[0015] Furthermore, the front locking teeth and the rear locking teeth are respectively configured as teeth arranged in an arc shape.

[0016] The beneficial effects achieved by the present invention compared with the prior art are:

[0017] 1) The headrest position of the child seat can be adjusted through the headrest adjustment handle according to the actual growth of the child's body to achieve a perfect fit with the child's body, which provides effective and comprehensive protection and improves the comfort of the child's head and neck, replacing the defect in the prior art that the middle position of the headrest of each gear of the child seat cannot perfectly fit the child's body.

[0018] 2) Through the cooperation between the front paddle and the front locking structure, as well as the cooperation between the rear paddle and the rear locking structure, the headrest adjustment handle can unlock and lock the seat belt in one direction regardless of whether it moves forward or backward. Therefore, when adjustment is required, the headrest adjustment handle can be moved forward or backward to unlock the seat belt, and after reaching the predetermined position, the headrest adjustment handle is released to lock the seat belt to ensure the stability of the headrest position after adjustment. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure of the present invention;

[0020] Figure 2 It is a structural exploded diagram of the present invention;

[0021] Figure 3 It is a structural schematic diagram of the locking structure of the present invention;

[0022] Figure 4 It is a schematic diagram of the structure when the front locking structure of the present invention is unlocked;

[0023] Figure 5 It is a schematic diagram of the structure when the rear locking structure of the present invention is unlocked;

[0024] Figure 6 It is a structural schematic diagram of the front locking structure of the present invention;

[0025] Figure 7 is a structural exploded diagram of the front locking structure of the present invention;

[0026] Figure 8 It is a structural schematic diagram of the rear locking structure of the present invention;

[0027] Fig. 9 It is a structural explosion diagram of the rear locking structure of the present invention. DETAILED DESCRIPTION

[0028] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the protection scope of the patent of the present invention.

[0029] like Figure 1-9 The figure shows a headrest adjustment device for a child seat provided by the present invention.

[0030] The specific technical solution is as follows:

[0031] A headrest adjustment device for a child seat, the adjustment device comprising a headrest adjustment handle 1, a headrest adjustment back plate 2, a return spring 3, a locking structure 4, a seat belt 5, a seat belt support shaft inner shell 6, and a seat belt support shaft outer shell 7; wherein,

[0032] A connecting plate 1-1 is protrudingly provided on the upper surface of the headrest adjustment handle 1, a connecting hole 1-11 is provided in the middle of the connecting plate, a connecting column 2-1 is provided at the front end of the headrest adjustment back plate 2, the connecting column passes through the bottom of the connecting hole 1-11 and passes through the top of the connecting hole 1-11, a return spring accommodating hole 1-12 is provided on the connecting plate at the left and right sides of the connecting hole 1-11, a return spring 3 is installed inside the return spring accommodating hole 1-12, and a front paddle 1-2 and a rear paddle 1-3 are protruding downwardly provided on the lower surface of the headrest adjustment handle 1;

[0033] The locking structure 4 is disposed below the lower surface of the headrest adjustment handle 1 and includes a front locking structure 4-1 that cooperates with the front paddle 1-2 and a rear locking structure 4-2 that cooperates with the rear paddle 1-3;

[0034] The seat belt support shaft inner shell 6 and the seat belt support shaft outer shell 7 are installed below the locking structure 4, the seat belt 5 is passed through the interior of the locking structure 4, and the seat belt support shaft outer shell 7 is installed below the seat belt support shaft inner shell 6. When the locking structure 4 is in a locked state, the locking structure 4 is stationary relative to the seat belt 5, and when the locking structure 4 is in an unlocked state, the locking structure 4 moves back and forth relative to the seat belt 5.

[0035] Specifically, in the front-to-back direction, the connecting column 2-1 has a movable travel inside the connecting hole 1-11, so that after the front paddle 1-2 abuts against the front locking structure 4-1 or the rear paddle 1-3 abuts against the rear locking structure 4-2, when the front stop slider deflects forward and the rear stop slider deflects backward, a forward and backward moving space is provided for the connecting column 2-1 inside the connecting hole 1-11, so that after the front stop slider deflects forward and the rear stop slider deflects backward, when the connecting column 2-1 moves to the front end or the rear end in the connecting hole 1-11, the headrest adjustment handle 1 pulls the headrest adjustment back plate 2 to move synchronously.

[0036] Specifically, the return spring 3 installed in the return spring accommodating hole 1-12 opened on one side is arranged close to the bottom, and the return spring 3 installed in the return spring accommodating hole 1-12 opened on the other side is arranged close to the top, so that the headrest adjustment handle 1 can stretch or compress the return spring 3 on at least one side regardless of moving upward or downward.

[0037] Specifically, the front paddle 1-2 and the rear paddle 1-3 are respectively arranged as inclined structures along the front-to-back direction, thereby increasing the contact area between the front paddle 1-2 and the front locking structure, and between the rear paddle and the rear locking structure, avoiding the risk of the front paddle 1-2 and the rear paddle 1-3 being broken when the front paddle 1-2 is in conflict with the front locking structure 4-1, and when the rear paddle 1-3 is in conflict with the rear locking structure 4-2.

[0038] Specifically, Figure 6-7 As shown, the front locking structure 4-1 includes a front stop slider support plate 4-11, a front stop slider 4-12, a front flat-head rivet 4-13, a front locking tooth 4-14, and a front torsion spring; the front flat-head rivet 4-13 passes through the left and right sides of the front stop slider support plate 4-11, the middle part of the front stop slider 4-12 is hinged to the front flat-head rivet 4-13, the lower end of the front stop slider 4-12 is fixedly connected to the front locking tooth 4-14 (as a preferred embodiment, the front stop slider 4-12 and the front locking tooth 4-14 can be formed as one piece), the front stop slider 4-12 is arranged inside the front stop slider support plate 4-11, and when the front paddle 1-2 contacts the upper end of the front stop slider 4-12, the front stop slider 4-12 rotates around the front flat-head rivet 4-13 and drives the front locking tooth 4-14 to disengage from the safety belt 5, and the front torsion spring is arranged inside the front stop slider support plate 4-11 and is sheathed on the front flat-head rivet.

[0039] Specifically, Figure 8-9 As shown, the rear locking structure 4-2 includes a rear stop slider support plate 4-21, a rear stop slider 4-22, a rear flat-head rivet 4-23, a rear locking tooth 4-24, and a rear torsion spring; the rear flat-head rivet 4-23 passes through the left and right sides of the rear stop slider support plate 4-21, the middle part of the rear stop slider 4-22 is hinged to the rear flat-head rivet 4-23, the lower end of the rear stop slider 4-22 is fixedly connected to the rear locking tooth 4-24 (as a preferred embodiment, the rear stop slider 4-22 and the rear locking tooth 4-24 can be formed as one piece), the rear stop slider 4-22 is arranged inside the rear stop slider support plate 4-21, and when the rear paddle 1-2 contacts the upper end of the rear stop slider 4-22, the rear stop slider 4-22 rotates around the rear flat-head rivet 4-23 and drives the rear locking tooth 4-24 to disengage from the seat belt 5, and the rear torsion spring is arranged inside the rear stop slider support plate 4-21 and is sheathed on the rear flat-head rivet.

[0040] Specifically, the front stop slider and the rear stop slider are respectively set to be L-shaped, the lower end of the L-shape is connected to the corresponding front locking tooth or rear locking tooth, the middle part of the L-shape is hinged to the corresponding front flat-head rivet or rear flat-head rivet, and the upper end of the L-shape is respectively in contact with the front paddle or the rear paddle, so that under the contact of the corresponding front paddle, the middle part of the front stop slider 4-12 rotates around the front flat-head rivet 4-13 while driving the front locking tooth 4-14 to synchronously disengage from the seat belt 5 to achieve unlocking of the front locking structure, and after the unlocking action, it is reset by the front torsion spring 4-15; and under the contact of the corresponding rear paddle, the middle part of the rear stop slider 4-22 rotates around the rear flat-head rivet 4-23 while driving the rear locking tooth 4-24 to synchronously disengage from the seat belt 5 to achieve unlocking of the rear locking structure, and after the unlocking action, it is reset by the rear torsion spring 4-25.

[0041] Specifically, the front locking teeth and the rear locking teeth are respectively arranged as arc-shaped teeth, and the arc-shaped teeth increase the arrangement range of the teeth, so as to ensure locking stability with as many teeth as possible while minimizing the extrusion damage to the seat belt.

[0042] When the headrest adjustment device needs to be adjusted forward,

[0043] Pull the headrest adjustment handle 1 forward, the connecting column 2-1 moves forward inside the connecting hole 1-11 but does not abut the front end of the connecting hole 1-11, the headrest adjustment back plate 2 does not move temporarily, the rear paddle 1-3 of the headrest adjustment handle 1 abuts against the upper end of the rear stop slider 4-22 of the rear locking structure 4-2, and the rear stop slider 4-22 rotates around the rear flat head pull nail 4-23 while driving the rear locking tooth 4-24 to move upward to bring the rear locking tooth out of the seat belt 5 to unlock the seat belt 5. When unlocked, the connecting column 2-1 moves forward inside the connecting hole 1-11 and abuts the front end position of the connecting hole 1-11. At this time, the headrest adjustment back plate 2 moves forward synchronously with the headrest adjustment handle 1, and at the same time, the unlocked front locking structure also moves forward synchronously with the headrest adjustment handle 1 to achieve the forward extension of the headrest adjustment device.

[0044] Similarly, when you need to adjust the headrest adjustment device backwards,

[0045] Push the headrest adjustment handle 1 backward, the connecting column 2-1 moves backward inside the connecting hole 1-11 but does not abut the rear end of the connecting hole 1-11, the headrest adjustment back plate 2 does not move temporarily, the front paddle 1-2 of the headrest adjustment handle 1 abuts against the upper end of the front stop slider 4-12 of the front locking structure 4-1, the front stop slider 4-12 rotates around the front flat head rivet 4-13 while driving the front locking tooth 4-14 to move upward to disengage the front locking tooth from the seat belt 5 to unlock the seat belt 5, when unlocked, the connecting column 2-1 moves backward inside the connecting hole 1-11 and abuts the rear end position of the connecting hole 1-11, at this time, the headrest adjustment back plate 2 moves backward synchronously with the headrest adjustment handle 1, and at the same time, the unlocked rear locking structure also moves backward synchronously with the headrest adjustment handle 1 to shorten the headrest adjustment device backward.

[0046] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A headrest adjustment device for a child seat, characterized in that: The adjustment device comprises a headrest adjustment handle (1), a headrest adjustment back plate (2), a return spring (3), a locking structure (4), a safety belt (5), a safety belt support shaft inner shell (6), and a safety belt support shaft outer shell (7); wherein: A connecting plate (1-1) is protruding from the upper surface of the headrest adjustment handle (1), a connecting hole (1-11) is provided in the middle of the connecting plate, a connecting column (2-1) is provided at the front end of the headrest adjustment back plate (2), the connecting column passes through the bottom of the connecting hole (1-11) and passes through the top of the connecting hole (1-11), a return spring accommodating hole (1-12) is provided on the connecting plate on the left and right sides of the connecting hole (1-11), a return spring (3) is installed inside the return spring accommodating hole (1-12), and a front paddle (1-2) and a rear paddle (1-3) are provided on the lower surface of the headrest adjustment handle (1) protruding downward; The locking structure (4) is arranged below the lower surface of the headrest adjustment handle (1), and comprises a front locking structure (4-1) cooperating with the front paddle (1-2) and a rear locking structure (4-2) cooperating with the rear paddle (1-3); The seat belt support shaft inner shell (6) and the seat belt support shaft outer shell (7) are installed below the locking structure (4); the seat belt (5) is inserted into the interior of the locking structure (4); the seat belt support shaft outer shell (7) is installed below the seat belt support shaft inner shell (6); when the locking structure (4) is in a locked state, the locking structure (4) is stationary relative to the seat belt (5); and when the locking structure (4) is in an unlocked state, the locking structure (4) moves forward and backward relative to the seat belt (5); In the front-to-back direction, the connecting column (2-1) has a movable travel inside the connecting hole (1-11); The return spring (3) installed inside the return spring accommodating hole (1-12) opened on one side is arranged close to the bottom, and the return spring (3) installed inside the return spring accommodating hole (1-12) opened on the other side is arranged close to the top; The front paddle (1-2) and the rear paddle (1-3) are respectively arranged as inclined structures along the front-to-back direction; The front locking structure (4-1) comprises a front stop slider support plate (4-11), a front stop slider (4-12), a front flat-head pull nail (4-13), a front locking tooth (4-14), and a front torsion spring (4-15); the front flat-head pull nail (4-13) passes through the left and right sides of the front stop slider support plate (4-11); the middle part of the front stop slider (4-12) is hinged to the front flat-head pull nail (4-13); the lower end of the front stop slider (4-12) is hinged to the front locking tooth (4-14); The front stop slider (4-12) is fixedly connected to the front stop slider support plate (4-14), the front stop slider (4-12) is arranged inside the front stop slider support plate (4-11), when the front paddle (1-2) contacts the upper end of the front stop slider (4-12), the front stop slider (4-12) rotates around the front flat head rivet (4-13) and drives the front locking tooth (4-14) to disengage from the safety belt (5), and the front torsion spring is arranged inside the front stop slider support plate (4-11) and is sheathed on the front flat head rivet (4-13); The rear locking structure (4-2) comprises a rear stop slider support plate (4-21), a rear stop slider (4-22), a rear flat-head pull nail (4-23), a rear locking tooth (4-24), and a rear torsion spring (4-25); the rear flat-head pull nail (4-23) passes through the left and right sides of the rear stop slider support plate (4-21); the middle part of the rear stop slider (4-22) is hinged to the rear flat-head pull nail (4-23); the lower end of the rear stop slider (4-22) is hinged to the rear locking tooth ( The rear stop slider (4-22) is fixedly connected to the rear stop slider support plate (4-24), the rear stop slider (4-22) is arranged inside the rear stop slider support plate (4-21), when the rear paddle (1-2) contacts the upper end of the rear stop slider (4-22), the rear stop slider (4-22) rotates around the rear flat head pull nail (4-23) and drives the rear locking tooth (4-24) to disengage from the safety belt (5), and the rear torsion spring is arranged inside the rear stop slider support plate (4-21) and is sleeved on the rear flat head pull nail (4-23).

2. A headrest adjustment device for a child seat according to claim 1, characterized in that: The front stop block and the rear stop block are respectively arranged in an L shape.

3. A headrest adjustment device for a child seat according to claim 1, characterized in that: The front locking teeth and the rear locking teeth are respectively configured as teeth arranged in an arc shape.

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