Connecting piece, ISOFIX assembly and child safety seat

Abstract

The utility model discloses a connecting piece, an ISOFIX assembly and a child safety seat, the connecting piece comprises a main rod body, the main rod body comprises a first end part and a second end part which are oppositely arranged in the length direction of the main rod body, the first end part is connected with an abutting piece, and the abutting piece extends in the length direction of the main rod body to protrude out of the front end face of the first end part; the second end part is connected with a mounting shaft, and the mounting shaft extends along the thickness direction of the main rod body and is vertically arranged on the side end surface of the second end part. Due to the fact that the stress conditions of the abutting piece, the main rod body and the installation shaft are different, the abutting piece, the main rod body and the installation shaft can be made of materials with different structural strength according to actual conditions, and the manufacturing cost of the connecting piece is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of child safety seats, and particularly relates to a connecting piece, an ISOFIX component, and a child safety seat. Background Art

[0002] A child safety seat is a child safety protection system designed for children of different ages (or weights) and can be fixed to a motor vehicle. In the event of a car collision or sudden deceleration, it can reduce the impact force on the child occupant and limit the movement of the child's body, thereby reducing the harm to the child occupant. Most child safety seats are installed on car seats through ISOFIX components. The ISOFIX component mainly includes a camming tooth, a connecting piece, and an unlocking button. One end of the connecting piece is connected to the unlocking button, and the other end of the connecting piece abuts against the camming tooth. Thus, the locking and unlocking of the camming tooth can be achieved through the connecting piece.

[0003] For example, Chinese Utility Model Patent CN218054931U discloses an ISOFIX button reset structure and a safety seat. "The ISOFIX button reset structure includes an ISOFIX component and an ISOFIX button component. The ISOFIX component includes a camming tooth, a connecting piece, and a first reset member. The ISOFIX button component includes an unlocking button and a button base; the connecting piece abuts against the camming tooth. One end of the first reset member is connected to the camming tooth, and the other end is connected to the connecting piece. The unlocking button is movably arranged in the button base and is connected to the connecting piece. The connecting piece is adapted to reset the unlocking button under the drive of the first reset member". One end of the connecting piece abuts against the camming tooth, and the other end is connected to the unlocking button. Thus, the force-bearing part of the connecting piece is concentrated at the end where the connecting piece abuts against the camming tooth. Most of the connecting pieces in the existing ISOFIX components are integrally formed of metal materials, which have good structural strength. However, in actual use, there is a situation of redundant structural strength in the connecting piece, and the process of integrally forming metal materials will make the cost of the connecting piece relatively high, resulting in waste of resources. Summary of the Invention

[0004] An object of the present application is to provide a connecting piece with a structural strength meeting the requirements to reduce the manufacturing cost of the connecting piece.

[0005] To achieve the above object, the technical solution adopted in the present application is: a connecting piece, including a main rod body. The main rod body includes a first end portion and a second end portion oppositely arranged along the length direction of the main rod body. An abutting piece is connected to the first end portion. The abutting piece extends along the length direction of the main rod body and partially protrudes from the front end face of the first end portion. A mounting shaft is connected to the second end portion. The mounting shaft extends along the thickness direction of the main rod body and is perpendicularly arranged on the side end face of the second end portion.

[0006] As a preference, the abutment piece includes a connecting portion and an abutment portion, the connecting portion is provided with a positioning hole, and the connecting portion is suitable for being integrally connected to the first end portion of the main rod body through the positioning hole and embedded in the main rod body, and the abutment portion extends outside the main rod body.

[0007] As another preference, the abutting portion is integrally connected to the connecting portion, the upper end surface of the abutting portion and the upper end surface of the connecting portion are connected to form a contact plane, and the contact plane and the upper end surface of the main rod body are in the same plane.

[0008] Further preferably, a mounting structure is provided on the outer side wall of the mounting shaft, and the mounting structure is a plurality of protrusions arranged along the circumference of the mounting shaft. A first penetrating mounting hole is provided on the side end surface of the second end portion, and the shape of the first mounting hole is adapted to the shape of the cross section of the mounting shaft. One end of the mounting shaft can be interference fit with the first mounting hole, so that the mounting shaft is connected to the main rod body.

[0009] Furthermore, the protrusion is a triangular prism.

[0010] Furthermore, the main rod body is made of plastic material, and the abutment piece and the installation shaft are both made of metal material.

[0011] Furthermore, the thickness of the main rod body is 4mm to 10mm, and the thickness of the contact piece is 2mm to 7mm.

[0012] The present application also provides an ISOFIX assembly, comprising a shell, a latch, an unlocking button and the above-mentioned connecting member, wherein the connecting member and the latch are arranged in the shell, the abutment piece of the connecting member abuts against the latch, the mounting shaft of the connecting member extends outside the shell and is connected to the unlocking button, the unlocking button is suitable for driving the connecting member to move from the first working position to the second working position to unlock the latch, and a reset member is further connected between the connecting member and the latch, and the reset member is suitable for driving the connecting member to move from the second working position to the first working position to lock the latch.

[0013] Furthermore, the first end is provided with a connecting lug, the connecting lug is provided with a second mounting hole, the latch is provided with a third mounting hole, one end of the reset member is connected to the second mounting hole, and the other end of the reset member is connected to the third mounting hole.

[0014] The present application also provides a child safety seat, comprising the above-mentioned ISOFIX assembly.

[0015] Compared with the prior art, the present invention has the following advantages:

[0016] The connecting piece includes a main rod body, a butting piece and a mounting shaft. The butting piece is designed separately from the main rod body. The butting piece and the main rod body can be made of different materials on the premise of ensuring the overall structural strength of the connecting piece. For example, the main rod body can be made of plastic, and the butting piece can be made of metal. The butting piece and the main rod body can be connected by an injection molding process, thereby reducing the manufacturing cost of the connecting piece and reducing the weight of the connecting piece. Brief Description of the Drawings

[0017] Figure 1 This is a schematic three-dimensional structure diagram of the connecting piece of the present application.

[0018] Figure 2 It is Figure 1 The partial enlarged schematic diagram at position A in

[0019] Figure 3 This is an exploded structure diagram of the connecting piece of the present application.

[0020] Figure 4 This is an exploded structure diagram of the ISOFIX component of the present application.

[0021] Figure 5 This is a schematic cross-sectional view of the locking teeth of the connecting piece in the first working position in the ISOFIX component of the present application.

[0022] Figure 6 This is a schematic cross-sectional view of the unlocking teeth of the connecting piece in the second working position in the ISOFIX component of the present application.

[0023] In the figure: 100, main rod body; 110, first end; 111, receiving groove; 120, second end; 121, first mounting hole; 130, connecting lug; 131, second mounting hole; 200, butting piece; 210, connecting portion; 211, positioning hole; 220, butting portion; 300, mounting shaft; 310, mounting structure; 400, housing; 410, guiding groove; 500, teeth; 510, first contact portion; 520, second contact portion; 530, contact surface; 540, third mounting hole; 600, unlocking button; 700, resetting member. Detailed Embodiments

[0024] Next, in combination with the specific embodiments, the present application will be further described. It should be noted that on the premise of no conflict, the following described embodiments or technical features can be arbitrarily combined with each other to form new embodiments.

[0025] In the description of the present application, it should be noted that for orientation terms, such as the terms "center", "horizontal", "vertical", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., the indicated orientation and positional relationships are based on the orientation or positional relationships shown in the drawings. This is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and should not be construed as limiting the specific protection scope of the present application.

[0026] It should be noted that the terms "first", "second", etc. in the description and claims of the present application are used to distinguish similar objects and do not necessarily need to be used to describe a specific order or sequence.

[0027] The terms "comprising", "having" and any variations thereof in the description and claims of the present application are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device that comprises a series of steps or units does not necessarily have to be limited to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0028] Refer to Figures 1-3In the illustrated embodiment, the present application provides a connector applicable to an ISOFIX component. The connector includes a main rod body 100. The main rod body 100 is in a long strip shape and includes a first end 110 and a second end 120 that are oppositely arranged along the length direction of the main rod body 100. A contact piece 200 is connected to the first end 110. The contact piece 200 extends along the length direction of the main rod body 100 and partially protrudes from the front end face of the first end 110. The contact piece 200 is adapted to abut against a toothed member 500. An installation shaft 300 is connected to the second end 120. The installation shaft 300 extends along the thickness direction of the main rod body 100 and is perpendicularly arranged on the side end face of the second end 120. During the use of the vast majority of ISOFIX components, one end of the connector abuts against the toothed member 500, and the other end of the connector is connected to an unlocking button 600. The stress-bearing part of the connector is mainly concentrated at the end where the connector abuts against the toothed member 500. Most of the connectors in the existing ISOFIX components are integrally formed of metal materials. There is a situation of redundant structural strength in the connector. At the same time, the integral forming of metal materials greatly increases the manufacturing cost of the connector and also causes waste of material resources. For the connector provided by the present application, the main rod body 100 and the contact piece are of a split design. The contact piece can be made of a metal material with high structural strength, and the main rod body 100 can be made of a polymer material with slightly lower structural strength. For example, the contact piece is selected to be made of high-strength steel, and the main rod body 100 is selected to be made of plastic material, which can reduce the manufacturing cost of the connector, save material resources, and reduce the weight of the connector while ensuring the structural strength of the connector.

[0029] Further, as Figure 3 shown, the contact piece 200 includes a connecting portion 210 and a contact portion 220. Two positioning holes 211 are formed in the connecting portion 210. Further, the connecting portion 210 is adapted to be integrally formed and connected to the first end 110 of the main rod body 100 through the two positioning holes 211 and is embedded in the main rod body 100. The contact portion 220 extends outside the main rod body 100 to abut against the toothed member 500. Specifically, the main rod body 100 can be directly formed on the contact piece 200 by an injection molding process, so as to realize the integral forming connection between the contact piece 200 and the main rod body 100. When the main rod body 100 is injection molded on the contact piece 200, a receiving groove 111 is formed at the first end 110 of the main rod body 100. The depth of the receiving groove 111 is adapted to the height of the contact piece 200. The side wall and the bottom wall of the receiving groove 111 are in contact with the side end face, the rear end face, and the bottom end face of the connecting portion 210 of the contact piece 200. During the injection molding process, two installation posts passing through the two positioning holes 211 will be formed between two opposite side walls of the receiving groove 111, restricting the connecting portion 210 from detaching from the receiving groove 111 and improving the connection strength between the contact piece 200 and the main rod body 100.

[0030] The thickness of the main rod body 100 is generally implemented to be 4 mm to 10 mm, and the thickness of the abutting piece 200 is generally implemented to be 2 mm to 7 mm. Preferably, in Figure 1 In the illustrated embodiment, the thickness of the main rod body 100 is implemented to be 5 mm, and the thickness of the abutting piece 200 is implemented to be 3 mm.

[0031] In some preferred embodiments, the abutting portion 220 is integrally formed and connected to the connecting portion 210. That is, the abutting piece 200 can be processed by processes such as cutting a steel billet or casting. The height dimension of the abutting portion 220 is smaller than the height dimension of the connecting portion 210. Setting the height dimension of the connecting portion 210 to be larger can further improve the connection strength between the connecting portion 210 and the main rod body 10, and the upper end surface of the abutting portion 220 and the upper end surface of the connecting portion 210 are in the same plane, so that the upper end surface of the abutting portion 220 and the upper end surface of the connecting portion 210 are joined to form a butting plane, and the butting plane is in the same plane as the upper end surface of the main rod body 100.

[0032] When the connecting piece is in use, it will slide in the housing 400 to lock or unlock the cogs 500. When the connecting piece locks the cogs 500, the cogs 500 are in abutting cooperation with the butting plane of the abutting piece 200; when the connecting piece unlocks the cogs 500, the cogs 500 are in abutting cooperation with the front end surface of the abutting portion 220 in the abutting piece 200. That is to say, the main stress-bearing part in the connecting piece is the abutting piece 200, and the main rod body 100 only bears a relatively small acting force. Therefore, setting the abutting piece 200 as a high-strength steel with a relatively high structural strength can avoid situations such as wear and breakage during the process of the abutting piece 200 abutting against the cogs 500. Setting the main rod body 100 as a plastic material with a relatively low structural strength will not only not affect the structural strength of the connecting piece, but also can reduce the manufacturing cost of the connecting piece.

[0033] A through first mounting hole 121 is provided on the side end surface of the second end portion 120 of the main rod body 100. The end portion of the mounting shaft 300 can be fitted with the first mounting hole 121 to realize the connection between the mounting shaft 300 and the main rod body 100. An installation structure 310 is provided on the outer side wall of the mounting shaft 300. The installation structure 310 is a plurality of protrusions arranged along the circumference of the mounting shaft 300. The shape of the first mounting hole 121 is adapted to the shape of the cross-section of the mounting shaft 300. Furthermore, the end portion of the mounting shaft 300 can be in interference fit with the first mounting hole 121 to realize the connection between the mounting shaft 300 and the main rod body 100. The installation structure 310 is suitable for preventing the connection shaft from loosening relative to the main rod body 100. The setting of the installation structure 310 can increase the contact surface between the end portion of the mounting shaft 300 and the main rod body 100, thereby increasing the friction force between the mounting shaft 300 and the main rod body 100, making the connection between the two more firm and reliable. The protrusions of the installation structure 310 can be implemented as triangular prisms. The structure of the triangular prism is simple, which can simplify the manufacturing process.

[0034] The connecting piece can be applied to various ISOFIX components. Only one embodiment of the ISOFIX component is provided in this application.

[0035] As Figures 4-6 In the embodiment shown, the ISOFIX component includes a housing 400, a locking tooth 500, an unlocking button 600, and the above-mentioned connecting piece. The connecting piece and the locking tooth 500 are both arranged in the housing 400. The abutting piece 200 on the connecting piece abuts against the locking tooth 500. The mounting shaft 300 on the connecting piece extends outside the housing 400 and is connected to the unlocking button 600. The unlocking button 600 is adapted to drive the connecting piece to move from the first working position to the second working position to unlock the locking tooth 500. A reset member 700 is also connected between the connecting piece and the locking tooth 500. The reset member 700 is adapted to drive the connecting piece to move from the second working position to the first working position to lock the locking tooth 500.

[0036] Specifically, a guiding groove 410 is provided on the housing 400. The mounting shaft 300 is movably arranged in the guiding groove 410. The mounting shaft 300 is adapted to slide along the guiding groove 410. The guiding groove 410 can limit the sliding stroke of the mounting shaft 300, the unlocking button 600, and the main rod body 100, so that the connecting piece can slide between the first working position and the second working position.

[0037] As Figures 5-6 Shown, the locking tooth 500 is provided with a first contact portion 510 and a second contact portion 520 protruding relative to the first contact portion 510. The second contact portion 520 includes a contact curved surface 530. When the locking tooth 500 is in the locked state, the abutting piece 200 abuts against the first contact portion 510. When the locking tooth 500 is in the unlocked state, the abutting piece 200 abuts against the second contact portion 520. The reset member 700 is adapted to drive the abutting portion 220 of the abutting piece 200 to slide along the contact curved surface 530.

[0038] During the gradual docking process between the ratchet teeth 500 and the vehicle anchor point, the vehicle anchor rod pushes against the ratchet teeth 500, causing the ratchet teeth 500 to swing. At the same time, the connecting member is in the first working position, and the abutting piece 200 can spontaneously and smoothly slide along the contact surface 530 driven by the reset member 700 until the abutting piece 200 contacts the first contact portion 510. The second contact portion 520 protrudes relative to the first contact portion 510, so that after the abutting piece 200 slides to the end of the contact surface 530, it automatically snaps into the first contact portion 510 to lock the position of the ratchet teeth 500, and the ratchet teeth 500 cannot rotate further. The structure of the ratchet teeth 500 is simple, which can automatically hook out the vehicle anchor rod and lock the position of the ratchet teeth 500, thus reliably locking the vehicle anchor rod. When it is necessary to unlock the ratchet teeth 500, the user can operate the unlocking button 600, so that the unlocking button 600 drives the connecting member to move to the second working position, and the reset member 700 drives the ratchet teeth 500 to swing, and the vehicle anchor point can be disengaged from the ratchet teeth 500, and the abutting piece 200 contacts the contact surface 530. After the vehicle anchor rod is separated from the ratchet teeth 500, the user can release the unlocking button 600, and the connecting member moves from the second working position to the first working position under the action of the reset member 700, and the abutting piece 200 slides along the base surface to contact the first contact portion 510.

[0039] The first end portion 110 of the main rod body 100 is further provided with a connecting lug 130. A second mounting hole 131 is provided on the connecting lug 130, and a third mounting hole 540 is provided on the ratchet teeth 500. The reset member 700 is a spring. One end of the spring is connected to the second mounting hole 131, and the other end of the spring is connected to the third mounting hole 540. The above structure is simple and the installation method is convenient.

[0040] The present application also provides a child safety seat, including the aforementioned ISOFIX assembly.

[0041] The basic principles, main features and advantages of the present application have been described above. Those skilled in the art of this industry should understand that the present application is not limited by the above embodiments. What is described in the above embodiments and the specification is only the principle of the present application. Without departing from the spirit and scope of the present application, the present application will have various changes and improvements, and these changes and improvements all fall within the scope of the present application claimed. The scope of protection required by the present application is defined by the appended claims and their equivalents.

Claims

1. A connecting member, applicable to an ISOFIX component, characterized in that, It includes a main rod body. The main rod body includes a first end portion and a second end portion that are oppositely arranged along the length direction of the main rod body. The first end portion is connected with a butting piece. The butting piece extends along the length direction of the main rod body and partially protrudes from the front end face of the first end portion. The second end portion is connected with a mounting shaft. The mounting shaft extends along the thickness direction of the main rod body and is vertically arranged on the side end face of the second end portion.

2. The connecting member according to claim 1, characterized in that, The butting piece includes a connecting portion and a butting portion. A positioning hole is formed in the connecting portion. Further, the connecting portion is adapted to be integrally formed and connected to the first end portion of the main rod body through the positioning hole and is embedded in the main rod body. The butting portion extends outside the main rod body.

3. The connecting member according to claim 2, wherein The butting portion is integrally formed and connected to the connecting portion. The upper end face of the butting portion and the upper end face of the connecting portion are joined to form a butting plane, and the butting plane is in the same plane as the upper end face of the main rod body.

4. The connecting member according to claim 2, wherein, An installation structure is provided on the outer side wall of the mounting shaft. The installation structure is a plurality of protrusions arranged along the circumference of the mounting shaft. A through first installation hole is provided on the side end face of the second end portion. The shape of the first installation hole is adapted to the cross-sectional shape of the mounting shaft. One end of the mounting shaft can be in interference fit with the first installation hole, so that the mounting shaft is connected to the main rod body.

5. The connecting member according to claim 4, wherein The protrusion is a triangular prism.

6. The connecting member according to any one of claims 1-5, characterized in that, The main rod body is made of a plastic material, and the butting piece and the mounting shaft are both made of a metal material.

7. The connecting member according to claim 6, wherein The thickness of the main rod body is 4 mm to 10 mm, and the thickness of the butting piece is 2 mm to 7 mm.

8. An ISOFIX component, characterized in that, It includes a housing, a ratchet, an unlocking button, and a connecting piece as described in any one of claims 1-7. The connecting piece and the ratchet are arranged in the housing. The butting piece of the connecting piece abuts against the ratchet. The mounting shaft of the connecting piece extends outside the housing and is connected to the unlocking button. The unlocking button is adapted to drive the connecting piece to move from a first working position to a second working position to unlock the ratchet. A reset piece is also connected between the connecting piece and the ratchet. The reset piece is adapted to drive the connecting piece to move from the second working position to the first working position to lock the ratchet.

9. The ISOFIX component according to claim 8, characterized in that, A connecting lug is provided at the first end portion. A second installation hole is provided on the connecting lug. The ratchet is provided with a third installation hole. One end of the reset piece is connected to the second installation hole, and the other end of the reset piece is connected to the third installation hole.

10. A child safety seat, characterized in that, It includes an ISOFIX component as described in any one of claims 8-9.

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