A base with adjustable tilt angle

Abstract

The utility model discloses a base of adjustable inclination angle, including base body, be equipped with the adjusting connecting seat of adjustable sliding of the front and back direction along it on the base body, be equipped with a plurality of locking portion of the front and back direction interval arrangement on the base body, the locking piece for with corresponding locking portion locking cooperation to with adjusting connecting seat locking of base body is slidably equipped with on adjusting connecting seat, the unlocking piece is movably equipped with on adjusting connecting seat, the inner end of unlocking piece is linked and is arranged with locking piece, the outer end of unlocking piece forms the unlocking operation part for user's operation, through with locking assembly and unlocking assembly shift to between base body and adjusting connecting seat, and the connecting interface of adjusting connecting seat only needs to be reserved to seat body, can make seat body's structure complexity greatly reduce, both meet the lightweight design trend of child safety seat, and reduced plastic mould development and material cost.

Description

[Technical Field]

[0001] This utility model relates to the field of children's vehicle technology, and in particular to a base with an adjustable tilt angle. [Background Technology]

[0002] As a core protective device for infants and toddlers traveling in vehicles, the tilt angle adjustment function of child safety seats is a key technology for adapting to children of different ages, matching the curvature of different car seats, and meeting the seat belt fixing requirements. The tilt adjustment function of traditional child safety seats is usually achieved through an adjustment mechanism that is directly connected to the base and the seat body. That is, the adjustment mechanism is directly set at the contact interface between the base and the seat body, and the angle adjustment and locking are completed through the mechanical linkage between the two.

[0003] Currently, the mainstream "direct connection tilt adjustment mechanism" on the market mainly adopts the following three technical solutions:

[0004] 1. Elastic snap-fit ​​structure: Multiple locking slots are spaced apart along the inclined direction on the bottom of the seat body, and elastic locking components (such as spring pins or plastic hooks) are installed on the base accordingly. During adjustment, the locking component needs to be manually pressed / moved to disengage from the current slot. After tilting the seat body to the target angle, the locking component is released, and it relies on elastic reset to snap into the new slot and lock.

[0005] 2. Gear and rack structure: A rack is fixed to the bottom of the seat body, and an adjusting gear that meshes with the rack is installed in the base. The gear is driven to rotate by rotating the handle, which causes the rack to slide and change the seat tilt angle.

[0006] 3. Damped pivot structure: The base and seat body are directly connected by a pivot with built-in damping fluid, and the angle suspension is achieved by using the damping force inside the pivot.

[0007] However, the aforementioned "direct connection" adjustment mechanism requires the integration of locking grooves, racks, and pivots into the bottom of the seat body, resulting in increased seat body thickness and weight (traditional seat bodies are 15%-20% heavier than similar non-adjustable seats). This not only contradicts the "lightweight" design trend of child safety seats (which needs to be adapted to the rear seat space of the vehicle and the convenience of parents holding the child), but also increases the development of plastic molds and material costs, resulting in problems such as complex seat body structure, difficulty in lightweighting and cost control.

[0008] Therefore, this utility model was developed to address the aforementioned problems. [Utility Model Content]

[0009] The purpose of this invention is to overcome the shortcomings of the prior art and provide a base with an adjustable tilt angle. By transferring the locking and unlocking components to the base body and the adjustment connector, the seat body only needs to retain the connection interface with the adjustment connector, without integrating any adjustment components. This greatly reduces the structural complexity of the seat body, which not only conforms to the "lightweight" design trend of child safety seats, but also reduces the development and material costs of plastic molds.

[0010] This utility model discloses an adjustable tilt angle base, comprising a base body 1, an adjustable connecting seat 2 that can be slidably adjusted along its front-back direction, a plurality of locking parts 11 spaced apart along its front-back direction, a locking member 21 slidably provided on the adjustable connecting seat 2 for locking and engaging with the corresponding locking part 11 to lock the adjustable connecting seat 2 relative to the base body 1, and an unlocking member 22 movably provided on the adjustable connecting seat 2, the inner end of the unlocking member 22 being linked with the locking member 21, and the outer end of the unlocking member 22 forming an unlocking operation part 23 for user operation.

[0011] As described above, in an adjustable tilt angle base, the inner end of the unlocking member 22 is constrained to slide only along the front and back direction of the adjusting connecting seat 2.

[0012] As described above, in an adjustable tilt angle base, the inner end of the unlocking member 22 is provided with an unlocking strip-shaped oblique hole 221, and the locking member 21 is provided with an unlocking linkage rod 211 that can be movably inserted into the unlocking strip-shaped oblique hole 221.

[0013] As described above, in an adjustable tilt angle base, a locking elastic element is provided between the locking member 21 and the adjusting connecting seat 2 for driving the locking member 21 to elastically reset.

[0014] As described above, in an adjustable tilt angle base, an unlocking elastic element 24 is provided between the unlocking element 22 and the adjusting connecting seat 2 for driving the unlocking element 22 to elastically reset.

[0015] As described above, an adjustable tilt angle base is provided with an operation window 20 on the adjustment connecting base 2, and the unlocking operation part 23 is located inside the operation window 20.

[0016] As described above, in an adjustable tilt base, the unlocking operation unit 23 is provided with a locking display unit 231 and an unlocking display unit 232. When the locking member 21 is locked in place with the locking part 11, the unlocking display unit 232 is located inside the operation window 20 and the locking display unit 231 is covered and hidden by the inner wall of the adjusting connecting seat 2. When the locking member 21 is separated from the locking part 11, the locking display unit 231 is located inside the operation window 20 and the unlocking display unit 232 is covered and hidden by the inner wall of the adjusting connecting seat 2.

[0017] As described above, in an adjustable tilt angle base, a guide structure 3 is provided between the adjusting connecting seat 2 and the base body 1 to guide the sliding path of the adjusting connecting seat 2.

[0018] As described above, an adjustable tilt angle base includes an arc-shaped guide groove 31 provided on the base body 1 and extending in the front-rear direction, and a guide rod 32 provided on the adjustment connecting seat 2 and cooperating with the arc-shaped guide groove 31.

[0019] As described above, in an adjustable tilt angle base, the guide rod 32 is rotatably mounted on the adjusting connecting seat 2, and the outer end of the guide rod 32 is rolled and slidably connected to the arc-shaped guide groove 31.

[0020] As described above, an adjustable tilt angle base is provided, wherein the base body 1 and the adjusting connecting seat 2 are both made of non-rigid materials; the base body 1 is provided with a rigid member 10 extending along its front-back direction, and the arc-shaped guide groove 31 is provided on the rigid member 10; the guide connecting rod 32 is a rigid structure.

[0021] As described above, in an adjustable tilt angle base, the circle containing the arc-shaped guide groove 31 is circle A, the central axis of the locking member 21 passes through the center of circle A, the locking part 11 is distributed on the arc of circle B, and the central axis of the locking part 11 passes through the center of circle B.

[0022] As described above, in an adjustable tilt base, the central angles between adjacent locking portions 11 are equal.

[0023] Compared with the prior art, the present invention has the following advantages:

[0024] 1. By transferring the locking and unlocking components to the base body and the adjustment connector, the seat body only needs to retain the connection interface with the adjustment connector, without integrating any adjustment components. This greatly reduces the structural complexity of the seat body, which not only conforms to the "lightweight" design trend of child safety seats, but also reduces the development and material costs of plastic molds.

[0025] 2. In this utility model, the adjusting connector is connected to the base body as an independent module. Its guide structure, locking parts, and other components are positioned closer to the base body, allowing users to adjust the angle directly by applying the adjusting connector with one hand. For example, when a parent is holding an infant, they only need to gently push the adjusting connector with their free hand to adjust the tilt angle of the seat body, avoiding the cumbersome operation of "moving the entire seat body" in traditional solutions and significantly improving ease of use.

[0026] 3. This utility model provides a clear guide path for the unlocking linkage rod through the elongated structure of the unlocking strip-shaped oblique hole, which strictly limits the deviation of the movement direction of the unlocking linkage rod, ensuring that the locking part slides smoothly and unlocks only along the preset straight line direction, avoiding wear of the locking part caused by jamming or shaking during the adjustment process, and improving the stability of the adjustment.

[0027] 4. The inclined design of the unlocking strip-shaped oblique hole can convert the user's operating force on the unlocking operation part into an axial driving force on the unlocking linkage rod. According to the principle of inclined plane mechanics, the inclined angle can decompose the horizontal pressing into a pushing force perpendicular to the sliding direction of the locking part, thereby reducing the force required for unlocking and making the unlocking operation easier.

[0028] 4. By switching the visibility of the lock and unlock displays according to the status, users can directly confirm the current status by simply observing through the operation window. This "clear at a glance" visual feedback completely eliminates operational uncertainty, which greatly reduces the probability of misoperation, especially for novice parents or users in emergency situations.

[0029] 5. This utility model connects the outer end of the guide rod to the arc-shaped guide groove in a rolling and sliding manner, which converts sliding friction into rolling friction, significantly reducing the resistance when adjusting the guide and making the adjustment smooth.

[0030] 6. In order to meet the requirements of lightweighting while ensuring the structural reliability of key adjustment components, the base body and the adjustment connecting seat are both made of non-rigid materials; the base body is provided with a rigid member extending along its front-back direction, and the arc-shaped guide groove is provided on the rigid member; the guide connecting rod is a rigid structure. [Attached Image Description]

[0031] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings, wherein:

[0032] Figure 1 This is a perspective view of the present invention.

[0033] Figure 2 This is one of the exploded views of this utility model.

[0034] Figure 3 This is the second exploded view of this utility model.

[0035] Figure 4 This is a side view of the guide structure of this utility model.

[0036] Figure 5 This is a perspective view of the locking and unlocking components in this utility model.

[0037] Figure 6 This is a cross-sectional view of the base body in this utility model.

[0038] Figure 7 This is a reference diagram showing the usage of this utility model when it is connected with a basket.

[0039] Figure 8 This is a schematic diagram showing the relationship between circle A and circle B in this utility model.

Detailed Implementation Methods

[0040] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0041] like Figure 1-8 As shown, this utility model discloses an adjustable tilt angle base, comprising a base body 1, an adjustable connecting seat 2 that can be slidably adjusted along its front-back direction, a plurality of locking parts 11 spaced apart along its front-back direction, a locking member 21 slidably provided on the adjustable connecting seat 2 for locking and engaging with the corresponding locking parts 11 to lock the adjustable connecting seat 2 relative to the base body 1, and an unlocking member 22 movably provided on the adjustable connecting seat 2. The inner end of the unlocking member 22 is linked with the locking member 21, and the outer end of the unlocking member 22 forms an unlocking operation part 23 for user operation. This utility model, by transferring the locking and unlocking components between the base body and the adjustable connecting seat, only requires the seat body to retain the connection interface with the adjustable connecting seat, eliminating the need to integrate any adjustment components. This significantly reduces the structural complexity of the seat body, conforming to the "lightweight" design trend of child safety seats and reducing the development and material costs of plastic molds.

[0042] Furthermore, in order to improve the accuracy and reliability of the unlocking action, the inner end of the unlocking member 22 is constrained to slide only along the front and back direction of the adjusting connecting seat 2.

[0043] like Figure 2 , 5 As shown, the inner end of the unlocking component 22 is provided with an unlocking strip-shaped oblique hole 221, and the locking component 21 is provided with an unlocking linkage rod 211 that can be movably inserted into the unlocking strip-shaped oblique hole 221. The inclined design of the unlocking strip-shaped oblique hole converts the user's operating force on the unlocking operation part into an axial driving force on the unlocking linkage rod. According to the principle of inclined plane mechanics, the inclination angle can decompose the horizontal pressing force into a pushing force perpendicular to the sliding direction of the locking component, thereby reducing the force required for unlocking and making the unlocking operation easier.

[0044] A locking elastic element, not shown in the figure, is provided between the locking member 21 and the adjusting connecting seat 2 to drive the locking member 21 to elastically reset. In this embodiment, the elastic force of the locking elastic element is achieved by the unlocking elastic element 24 through the unlocking strip-shaped oblique hole 221 and the unlocking linkage rod 211. The design is reasonable, simplifies the parts, and reduces the manufacturing cost.

[0045] like Figure 2 , 5 As shown, to achieve automatic reset and simplify the operation process, an unlocking elastic element 24 is provided between the unlocking element 22 and the adjusting connecting seat 2 to drive the unlocking element 22 to elastically reset. During unlocking, the user operates the unlocking operation part 23 to drive the unlocking element 22 to slide forward or backward relative to the adjusting connecting seat 2. The inner end of the unlocking element 22 engages with the unlocking linkage rod 211 through the corresponding inner wall of the unlocking strip-shaped oblique hole 221 to drive the locking element to move upward relative to the adjusting connecting seat 2 until the locking element separates from the locking part. Then, the user drives the adjusting connecting seat 2 to adjust relative to the base body to the desired position and removes the force applied to the unlocking operation part 23. At this moment, the unlocking element 22 automatically slides back to its original position under the elastic force of the unlocking elastic element 24. The inner end of the unlocking element 22 engages with the unlocking linkage rod 211 through the corresponding inner wall of the unlocking strip-shaped oblique hole 221 to drive the locking element to move downward relative to the adjusting connecting seat 2 until the locking element locks with the corresponding locking part. The adjustment operation is convenient.

[0046] like Figure 1-3 As shown, in order to improve the ease of operation and protect the unlocking operation part, the adjustment connecting seat 2 is provided with an operation window 20, and the unlocking operation part 23 is located inside the operation window 20.

[0047] like Figure 2 , 5 As shown, the unlocking operation unit 23 is provided with a locking display unit 231 and an unlocking display unit 232. When the locking member 21 is locked with the locking part 11, the unlocking display unit 232 is located inside the operation window 20 and the locking display unit 231 is covered and hidden by the inner wall of the adjusting connecting seat 2, or the locking display unit 231 is located inside the operation window 20 and the unlocking display unit 232 is covered and hidden by the inner wall of the adjusting connecting seat 2. When the locking member 21 is separated from the locking part 11, the locking display unit 231 is located inside the operation window 20 and the unlocking display unit 232 is covered and hidden by the inner wall of the adjusting connecting seat 2, or the unlocking display unit 232 is located inside the operation window 20 and the locking display unit 231 is covered and hidden by the inner wall of the adjusting connecting seat 2. In this embodiment, the visibility of the lock and unlock displays switches according to the status, allowing users to directly confirm the current status simply by observing the operation window. This "clear at a glance" visual feedback completely eliminates operational uncertainty, significantly reducing the probability of misoperation, especially for novice parents or users in emergency situations. The lock and unlock displays 231 and 232 can be color-coded displays applied to corresponding areas of the unlock operation section 23, such as red, green, or yellow.

[0048] like Figure 2 , 4As shown, to ensure sliding accuracy, a guide structure 3 is provided between the adjusting connecting seat 2 and the base body 1 to guide the sliding path of the adjusting connecting seat 2. The guide structure 3 includes an arc-shaped guide groove 31 provided on the base body 1 and extending in the front-rear direction, and a guide connecting rod 32 provided on the adjusting connecting seat 2 and guidingly engaging with the arc-shaped guide groove 31.

[0049] Furthermore, the guide rod 32 is rotatably mounted on the adjusting connecting seat 2, and the outer end of the guide rod 32 is rolled and slidably connected to the arc-shaped guide groove 31, that is, the sliding friction is converted into rolling friction, which significantly reduces the resistance during adjustment and makes the adjustment smooth.

[0050] Furthermore, in order to meet the requirements of lightweighting while ensuring the structural reliability of key adjustment components, the base body 1 and the adjustment connecting seat 2 are generally injection molded; the base body 1 is provided with a rigid member 10 extending along its front-back direction, which can be made of aluminum alloy or iron alloy, and the arc-shaped guide groove 31 is provided on the rigid member 10; the guide connecting rod 32 is an iron rod.

[0051] like Figure 8 As shown, for smooth locking, the circle containing the arc-shaped guide groove 31 is circle A, and the central axis of the locking member 21 passes through the center of circle A. The locking portions 11 are distributed on the arc of circle B, and the central axis of the locking portions 11 passes through the center of circle B. Furthermore, the central angles between adjacent locking portions 11 are equal, facilitating quick positioning and locking.

Claims

1. A base with an adjustable tilt angle, characterized in that... The system includes a base body (1), on which an adjustment connecting seat (2) is provided that can be slidably adjusted along its front-back direction. The base body (1) is provided with a plurality of locking parts (11) spaced apart along its front-back direction. The adjustment connecting seat (2) is slidably provided with a locking member (21) for locking and engaging with the corresponding locking part (11) to lock the adjustment connecting seat (2) relative to the base body (1). The adjustment connecting seat (2) is movably provided with an unlocking member (22). The inner end of the unlocking member (22) is linked with the locking member (21), and the outer end of the unlocking member (22) forms an unlocking operation part (23) for user operation.

2. The adjustable tilt angle base according to claim 1, characterized in that... The inner end of the unlocking member (22) is constrained to slide only along the front and back direction of the adjusting connecting seat (2).

3. The adjustable tilt angle base according to claim 2, characterized in that... The inner end of the unlocking component (22) is provided with an unlocking strip-shaped oblique hole (221), and the locking component (21) is provided with an unlocking linkage rod (211) that can be movably inserted into the unlocking strip-shaped oblique hole (221).

4. The adjustable tilt angle base according to claim 2, characterized in that... An unlocking elastic element (24) is provided between the unlocking element (22) and the adjusting connecting seat (2) for driving the unlocking element (22) to elastically reset.

5. The adjustable tilt angle base according to claim 1, characterized in that... The adjustment connector (2) is provided with an operation window (20), and the unlocking operation part (23) is located inside the operation window (20).

6. The adjustable tilt angle base according to claim 5, characterized in that... The unlocking operation unit (23) is provided with a locking display unit (231) and an unlocking display unit (232). When the locking member (21) is locked in place with the locking part (11), the unlocking display unit (232) is located inside the operation window (20) and the locking display unit (231) is covered and hidden by the inner wall of the adjusting connecting seat (2). When the locking member (21) is separated from the locking part (11), the locking display unit (231) is located inside the operation window (20) and the unlocking display unit (232) is covered and hidden by the inner wall of the adjusting connecting seat (2).

7. A base with an adjustable tilt angle according to any one of claims 1-6, characterized in that... The adjusting connecting seat (2) and the base body (1) are provided with a guide structure (3) for guiding the sliding path of the adjusting connecting seat (2); the guide structure (3) includes an arc-shaped guide groove (31) provided on the base body (1) and extending in the front-rear direction, and a guide connecting rod (32) provided on the adjusting connecting seat (2) and cooperating with the arc-shaped guide groove (31).

8. The adjustable tilt angle base according to claim 7, characterized in that... The guide rod (32) is rotatably mounted on the adjusting connecting seat (2), and the outer end of the guide rod (32) is rolled and slidably connected to the arc-shaped guide groove (31).

9. The adjustable tilt angle base according to claim 7, characterized in that... The base body (1) and the adjusting connecting seat (2) are both made of non-rigid materials; the base body (1) is provided with a rigid member (10) extending along its front and rear direction, and the arc-shaped guide groove (31) is provided on the rigid member (10); the guide rod (32) is a rigid structure.

10. The adjustable tilt angle base according to claim 7, characterized in that... The circle containing the arc-shaped guide groove (31) is circle A. The central axis of the locking member (21) passes through the center of circle A. The locking part (11) is distributed on the arc of circle B. The central axis of the locking part (11) passes through the center of circle B.

Images