Telescopic anti-overturning automobile safety seat base

Abstract

The utility model discloses a telescopic anti-overturning automobile safety seat base. The telescopic anti-overturning automobile safety seat base comprises a base body, the anti-overturning assembly is arranged on the base body and can be adjusted in a telescopic and sliding mode in the front-back direction of the base body, and the anti-overturning assembly is configured to be used for being attached to the backrest side of the automobile seat in an abutting mode so as to achieve overturning resistance; the telescopic length of the anti-overturning assembly relative to the base body is controlled and adjusted through the telescopic sliding of the anti-overturning assembly relative to the base body, that is, the anti-overturning assembly can be correspondingly adjusted in a telescopic mode according to automobile seats of different sizes so as to ensure that the anti-overturning assembly can abut against and be attached to the backrest sides of the automobile seats of different sizes. Therefore, by the adoption of the automobile seat, the requirement for installation, attachment and overturning resistance of different automobile seats can be met, and meanwhile the problem that legs of children bend unnaturally when the automobile seat is installed and used backwards can be solved.

Description

[Technical field]

[0001] The utility model relates to a baby car safety seat, in particular to a retractable and anti-turnover car safety seat base. [Background technology]

[0002] With the improvement of living standards, the number of family cars is also increasing. Choosing a car for daily travel has become a common way for families to travel. Equipping the car seat with a car safety seat that can be used by children of all ages can effectively improve the safety of children in the car. At present, most child car safety seats are composed of a seat that can be sat on and a base installed on the bottom of the seat on the car seat. The installation of the base and the car seat mainly adopts the ISOFIX interface, that is, the ISOFIX interface set on the base is connected to the preset interface on the car seat, and the interface can be docked and locked, which is simple and quick to install.

[0003] However, since car safety seats come in different styles and are designed in different sizes, some ISOFIX interfaces that cannot be telescopically adjusted cannot be adapted to car seats of different sizes, resulting in low practicality and low market competitiveness.

[0004] Other retractable ISOFIX interfaces can be suitable for car seats of different sizes, that is, by extending the length of the sliding sleeve of the ISOFIX interface, the ISOFIX interface force arm becomes longer. At the same time, the rear part of the base cannot be against the car seat backrest, resulting in it being unable to meet the installation, fitting and anti-rollover requirements of car seats of different sizes, posing certain safety hazards.

[0005] For this reason, the present invention is studied and proposed in view of the above-mentioned problems. [Contents of the utility model]

[0006] The purpose of the utility model is to overcome the shortcomings of the prior art and provide a retractable anti-flipping car safety seat base, which can control and adjust the telescopic length of the anti-flipping component relative to the base body by causing the anti-flipping component to slide telescopically relative to the base body, that is, the anti-flipping component can be telescopically adjusted according to different sizes of car seats to ensure that the anti-flipping component can be abutted and fitted with the backrests of car seats of different sizes. For this reason, the utility model can meet the installation, fitting and anti-flipping requirements of car seats of different sizes, and can also solve the problem of unnatural bending of children's legs when the seats are installed and used in a rearward direction.

[0007] The utility model discloses a retractable anti-flipping automobile safety seat base, comprising:

[0008] Base body 1;

[0009] An anti-rollover component 2, which is disposed on the base body 1 and can be adjusted in a telescopic, sliding manner along the front-rear direction of the base body 1, and is configured to abut against and fit against a car seat backrest to achieve anti-rollover;

[0010] An anti-turnover locking mechanism 3, wherein the anti-turnover locking mechanism 3 is located between the base body 1 and the anti-turnover assembly 2 to lock the anti-turnover assembly 2 relative to the base body 1;

[0011] An anti-flip unlocking mechanism 4, wherein the anti-flip unlocking mechanism 4 is located on the base body 1 or the anti-flip assembly 2 and is used to link the unlocking action of the anti-flip locking mechanism 3;

[0012] The ISOFIX interface component 5 is arranged on the anti-rollover component 2 .

[0013] In the retractable anti-flipping car safety seat base as described above, a guide structure 6 for guiding the sliding path of the anti-flipping component 2 is provided between the anti-flipping component 2 and the base body 1 .

[0014] As described above, in a retractable anti-flipping car safety seat base, the guide structure 6 includes a guide strip hole 61 provided on the anti-flipping component 2 and extending along the front-to-back direction of the base body 1, and a guide rod 62 provided on the base body 1 and slidably guided with the guide strip hole 61.

[0015] As described above, a retractable anti-flip car safety seat base, the anti-flip component 2 includes an anti-flip sliding frame 21 slidably arranged on the base body 1 and an anti-flip abutment portion 22 connected to the rear end of the anti-flip sliding frame 21, the anti-flip abutment portion 22 has an abutment surface 220 abutting against the car seat backrest; the base body 1 is provided with a base slide groove 11 extending along its front and rear directions and slidably connected to the anti-flip sliding frame 21, and the anti-flip locking mechanism 3 is located between the base body 1 and the anti-flip sliding frame 21.

[0016] As described above, a retractable anti-flip car safety seat base, the anti-flip locking mechanism 3 includes a locking groove 34 arranged on the anti-flip sliding frame 21, a locking movable block 35 is slidably provided in the locking groove 34, and an anti-flip locking member 32 is synchronously connected between the two locking movable blocks 35; the anti-flip locking mechanism 3 also includes anti-flip locking clamping parts 31 arranged at intervals along the front-to-back direction on the base body 1 for the anti-flip locking member 32 to be clamped, a locking reset member 33 is provided between the locking movable block 35 and the bottom of the locking groove 34 for elastically pressing the locking movable block 35 so that the anti-flip locking member 32 remains clamped in the anti-flip locking clamping part 31, and the locking movable block 35 is configured to be unlocked by the anti-flip unlocking mechanism 4.

[0017] As described above, a retractable anti-flip car safety seat base, the anti-flip unlocking mechanism 4 includes an anti-flip unlocking rod 41 and an anti-flip operating rod 42, the middle part of the anti-flip unlocking rod 41 is rotatably connected to the anti-flip sliding frame 21, and the front end of the anti-flip unlocking rod 41 can press the upper surface of the locking movable block 35 to make the anti-flip locking piece 32 disengage from the anti-flip locking clamping part 31, and the rear end of the anti-flip unlocking rod 41 is connected to the anti-flip operating rod 42.

[0018] In the retractable anti-turnover car safety seat base as described above, the rear portion of the base body 1 is provided with an accommodating cavity 12 for accommodating the anti-turnover abutment portion 22 .

[0019] As described above, a retractable anti-flip car safety seat base, the ISOFIX interface assembly 5 includes an ISOFIX shell 51 arranged on the side of the anti-flip sliding frame 21, the ISOFIX shell 51 is slidably and adjustably connected to the ISOFIX sleeve 52, and an ISOFIX telescopic adjustment mechanism 53 is provided between the ISOFIX shell 51 and the ISOFIX sleeve 52.

[0020] In the above-mentioned retractable anti-turnover car safety seat base, the anti-turnover sliding frame 21, the anti-turnover abutment portion 22 and the ISOFIX housing 51 are integrally formed by plastic.

[0021] In the retractable anti-turnover car safety seat base as described above, an anti-turnover reinforcement pipe 23 is provided between the anti-turnover sliding frame 21 and the anti-turnover abutment portion 22 .

[0022] In the retractable anti-flipping car safety seat base as described above, the anti-flipping assembly 2 is provided with a concealing shell 211 for hiding the anti-flipping unlocking rod 41 and the anti-flipping operating rod 42 .

[0023] Compared with the prior art, the utility model has the following advantages:

[0024] 1. The utility model can control and adjust the telescopic length of the anti-rollover component relative to the base body by causing the anti-rollover component to slide telescopically relative to the base body, that is, the anti-rollover component can be telescopically adjusted according to different sizes of car seats to ensure that the anti-rollover component can be abutted and fitted against the backrest side of car seats of different sizes. For this reason, the utility model can meet the installation, fitting and anti-rollover requirements of different car seats, and can also solve the problem of unnatural leg bending of children when the seats are installed and used in a rearward direction.

[0025] 2. The sliding cooperation between the base slide groove and the anti-rollover sliding frame can play a guiding and limiting role, ensuring that the anti-rollover sliding frame slides smoothly along the set direction.

[0026] 3. In order to make the overall appearance of the utility model simple, save space and maintain the aesthetics of the product, the rear part of the base body is provided with an accommodating cavity for accommodating the anti-turnover abutment part.

[0027] 4. The utility model arranges the retractable ISOFIX interface component on the retractable anti-flip component, so that the ISOFIX interface component has a secondary retractable function and a larger retractable distance, while ensuring its mechanical strength and ensuring a safe and reliable connection.

[0028] 5. In order to cover and conceal the internal mechanism when the anti-flip assembly is extended and pulled out for use, a concealing shell for hiding the anti-flip unlocking rod and the anti-flip operating rod is provided on the anti-flip assembly.

Brief Description of the Drawings

[0029] The specific implementation of the utility model is further described in detail below with reference to the accompanying drawings, wherein:

[0030] Figure 1 It is a schematic diagram of the three-dimensional structure of the anti-flip assembly of the utility model when it is retracted into the base body.

[0031] Figure 2 It is a schematic diagram of the three-dimensional structure when the anti-flip assembly of the utility model extends out of the base body.

[0032] Figure 3 This is one of the three-dimensional structural schematic diagrams when the anti-rollover component of the utility model extends out of the base body and the ISOFIX interface component is in an extended state.

[0033] Figure 4 This is the second schematic diagram of the three-dimensional structure when the anti-rollover component of the utility model extends out of the base body and the ISOFIX interface component is in an extended state.

[0034] Figure 5 This is a bottom view of the utility model when the anti-rollover component is retracted into the base body and the ISOFIX interface component is extended.

[0035] Figure 6 This is a bottom view of the utility model when the anti-rollover component extends out of the base body and the ISOFIX interface component is extended.

[0036] Figure 7 This is one of the three-dimensional structural schematic diagrams of the anti-flip assembly in the utility model.

[0037] Figure 8 This is the second schematic diagram of the three-dimensional structure of the anti-flip assembly in the utility model. [Specific implementation method]

[0038] The implementation modes of the present utility model are described in detail below in conjunction with the accompanying drawings.

[0039] like Figure 1-8 As shown, the utility model provides a retractable anti-flipping car safety seat base, comprising:

[0040] Base body 1;

[0041] An anti-rollover component 2, which is disposed on the base body 1 and can be adjusted in a telescopic, sliding manner along the front-rear direction of the base body 1, and is configured to abut against and fit against a car seat backrest to achieve anti-rollover;

[0042] An anti-turnover locking mechanism 3, wherein the anti-turnover locking mechanism 3 is located between the base body 1 and the anti-turnover assembly 2 to lock the anti-turnover assembly 2 relative to the base body 1;

[0043] An anti-flip unlocking mechanism 4, wherein the anti-flip unlocking mechanism 4 is located on the base body 1 or the anti-flip assembly 2 and is used to link the unlocking action of the anti-flip locking mechanism 3;

[0044] ISOFIX interface component 5, the ISOFIX interface component 5 is arranged on the anti-flip component 2. When the utility model is installed on the car seat for use, the user releases the locking state of the anti-flip component 2 relative to the base body 1 by the anti-flip unlocking mechanism 4 and the anti-flip locking mechanism 3, and then operates the anti-flip component 2 to extend backward relative to the base body 1 until the anti-flip abutting part 22 of the anti-flip component 2 abuts against the car seat backrest. At this moment, the ISOFIX interface component 5 is connected to the preset interface on the car seat, and then the force of the anti-flip unlocking mechanism 4 is canceled, and the anti-flip locking mechanism 3 locks the anti-flip component 2 relative to the base body 1. For this reason, the use of the utility model can make the car safety seat more stably and reliably installed on the car seat to ensure its safety. At the same time, the utility model can meet the installation and anti-flip requirements of car seats of different sizes, and can also solve the problem of unnatural leg bending of children when used in a rearward installation.

[0045] like Figure 5 , 6 As shown, in order to ensure that the anti-flip assembly 2 can slide and retract smoothly and stably along the set direction, a guide structure 6 for guiding the sliding path of the anti-flip assembly 2 is provided between the anti-flip assembly 2 and the base body 1 .

[0046] like Figure 5 , 6As shown, the guide structure 6 includes a guide bar hole 61 provided on the anti-turnover assembly 2 and extending along the front-to-back direction of the base body 1, and a guide rod 62 provided on the base body 1 and slidingly guidingly cooperating with the guide bar hole 61. The guide rod 62 can be abutted and limited with the corresponding end wall of the guide bar hole 61, that is, the guide rod 62 is limited to move only between the two end walls of the guide bar hole 61, thereby limiting the telescopic sliding stroke of the anti-turnover assembly 2; in addition, the guide rod 62 is limitedly matched with the two side walls of the guide bar hole 61 to prevent the anti-turnover assembly 2 from deviating and shaking along the left and right directions of the base body 1.

[0047] like Figure 5 , 6 As shown, in order to improve the connection strength between the anti-turnover component 2 and the base body 1, two guide strip holes 61 are symmetrically arranged on the anti-turnover component 2, and the corresponding two guide rods 62 are symmetrically arranged on the bottom of the base body 1.

[0048] like Figure 1-4 As shown in Figures 7 and 8, in order to ensure the stable and smooth sliding adjustment of the anti-rollover sliding frame 21 and make the structure of the utility model more compact and the overall volume minimized, the anti-rollover assembly 2 includes an anti-rollover sliding frame 21 slidably arranged on the base body 1 and an anti-rollover abutment portion 22 connected to the rear end of the anti-rollover sliding frame 21, and the anti-rollover abutment portion 22 has an abutment surface 220 that abuts against the backrest of the car seat; the base body 1 is provided with a base slide groove 11 that is slidably connected to the anti-rollover sliding frame 21 along its front and rear directions, and the anti-rollover locking mechanism 3 is located between the base body 1 and the anti-rollover sliding frame 21. In order to facilitate pulling, the anti-rollover abutment portion 22 has an operation window 221 for the user's hand to extend into and operate the anti-rollover abutment portion 22.

[0049] like Figure 8 As shown, the anti-rollover sliding frame 21 and the anti-rollover abutment portion 22 are integrally formed by plastic, and an anti-rollover reinforcement pipe 23 is provided between the anti-rollover sliding frame 21 and the anti-rollover abutment portion 22, which can reduce the manufacturing cost while enhancing the overall anti-bending performance of the anti-rollover component 2.

[0050] like Figure 5-8As shown, for reliable locking and convenient unlocking, the anti-turnover locking mechanism 3 includes a locking groove 34 provided on the anti-turnover sliding frame 21, and a locking movable block 35 is provided in the locking groove 34 so as to slide up and down, which can guide the sliding path of the locking movable block 35 to ensure the precise engagement of the anti-turnover locking member 32 with the anti-turnover locking clamping portion 31. The anti-turnover locking member 32 is connected between the two locking movable blocks 35 so as to enable the two locking movable blocks 35 to move together, and the anti-turnover locking member 32 can also play a role in strengthening the structural strength between the two locking movable blocks 35. The anti-turnover locking mechanism 3 also includes an anti-turnover locking engaging portion 31 arranged at intervals along the front-to-back direction on the base body 1 for the anti-turnover locking member 32 to be engaged, a locking reset member 33 for elastically pressing the locking engaging block 35 to keep the anti-turnover locking member 32 engaged in the anti-turnover locking engaging portion 31 is arranged between the locking movable block 35 and the bottom of the locking groove 34, and the locking movable block 35 is configured to be unlocked by the anti-turnover unlocking mechanism 4. The anti-turnover sliding frame 21 is arranged in a side U-shaped structure, and the two locking grooves 34 are symmetrically arranged at the middle position of the left and right sliding sections of the anti-turnover sliding frame 21, so that the anti-turnover locking member 32 is located between the left and right sliding sections and crosses the bottom of the base body to ensure structural strength.

[0051] like Figure 5 , 6 As shown, the base body 1 is provided with a plurality of iron sheets extending along the front-to-back direction thereof, each iron sheet is provided with an anti-turnover locking clamping portion 31, and two anti-turnover locking members 32 are simultaneously engaged with the base body 1 and the corresponding anti-turnover locking clamping portions 31 on the iron sheets, which can increase the fixing strength thereof and ensure safe and reliable locking between the anti-turnover locking mechanism and the base body.

[0052] like Figure 8As shown, for the convenience of unlocking, the anti-flip unlocking mechanism 4 includes an anti-flip unlocking rod 41 and an anti-flip operating rod 42, the middle part of the anti-flip unlocking rod 41 is rotatably connected to the anti-flip sliding frame 21, and the front end of the anti-flip unlocking rod 41 can press the upper surface of the locking movable block 35 to make the anti-flip locking piece 32 disengage from the anti-flip locking clamping part 31, and the rear end of the anti-flip unlocking rod 41 is connected to the anti-flip operating rod 42. When unlocking the vehicle, the user pulls the anti-flip operating rod 42 to drive the rear ends of the two anti-flip unlocking rods 41 to rotate upward around the rotation axis between the anti-flip unlocking rod 41 and the anti-flip sliding frame 21, and the front end of the anti-flip unlocking rod 41 drives the locking movable block 35 to drive the anti-flip locking member 32 to move downward so that the anti-flip locking member 32 exits the anti-flip locking clamping portion 31 to release the locking state of the anti-flip assembly relative to the base body. At this moment, the anti-flip assembly can be operated to extend backward or retract forward relative to the base body for adjustment. After the adjustment is completed, the pulling force of the anti-flip operating rod 42 is canceled, and the locking movable block 35 slides upward and resets under the elastic force of the anti-flip locking member 32, so that the anti-flip locking member 32 is engaged with the corresponding anti-flip locking clamping portion 31, and the adjustment operation is convenient.

[0053] like Figure 1-4 As shown, in order to make the overall appearance of the utility model simple, save space and maintain the aesthetics of the product, the rear part of the base body 1 is provided with a receiving cavity 12 for accommodating the anti-turnover abutment portion 22. Figure 1 As shown, when the anti-turnover abutting portion 22 is placed in the accommodating cavity 12, the abutting surface 220 of the anti-turnover abutting portion 22 and the abutting surface of the rear portion of the base body 1 are on the same plane, making the structure more compact.

[0054] like Figure 1-8 As shown, the ISOFIX interface assembly 5 includes an ISOFIX housing 51 disposed on the side of the anti-flip sliding frame 21, the ISOFIX housing 51 is slidably and adjustably connected to an ISOFIX sleeve 52, and an ISOFIX telescopic adjustment mechanism 53 is provided between the ISOFIX housing 51 and the ISOFIX sleeve 52. In this embodiment, the telescopically adjustable ISOFIX interface assembly is disposed on the telescopically adjustable anti-flip assembly, so that the ISOFIX interface assembly has a secondary telescopic function and a telescopic distance of a larger stroke, and at the same time, its mechanical strength can be guaranteed, ensuring a safe and reliable connection.

[0055] In some embodiments, the ISOFIX telescopic adjustment mechanism 53 may include ISOFIX telescopic adjustment lock holes arranged on the ISOFIX shell 51 at intervals along the front-to-back direction of the base body and an ISOFIX telescopic adjustment lock block movably arranged on the ISOFIX sleeve 52 and locked with the corresponding ISOFIX telescopic adjustment lock holes.

[0056] like Figure 8 As shown, in order to simplify the structure and improve the structural strength, the anti-rollover sliding frame 21, the anti-rollover abutment 22 and the ISOFIX housing 51 are integrally formed by plastic. An anti-rollover reinforcement pipe 23 is provided between the anti-rollover sliding frame 21 and the anti-rollover abutment 22, which can reduce the manufacturing cost and enhance the overall anti-bending performance of the anti-rollover assembly 2.

[0057] like Figure 8 As shown, the front side of the anti-turnover abutment portion 22 is provided with an embedding groove 222 for embedding the anti-turnover reinforcement pipe 23, which is easy to install and has a compact structure. Figure 8 As shown, the embedded anti-rollover reinforcement pipe 23 includes a first reinforcement pipe section with a U-shaped structure and embedded in the embedding groove 222, and a second reinforcement pipe section connected to both ends of the first reinforcement pipe section and extending along the front-to-back direction of the base body and installed on the anti-rollover sliding frame 21.

[0058] like Figure 2 , 3 As shown in FIGS. 4 and 7, in order to cover and conceal the internal mechanism when the anti-flip assembly 2 is extended and pulled out for use, the anti-flip assembly 2 is provided with a concealing housing 211 for hiding the anti-flip unlocking rod 41 and the anti-flip operating rod 42. The concealing housing 211 can be integrally formed by injection molding.

Claims

1. A retractable anti-flip car safety seat base, characterized in that include: Base body (1); An anti-rollover component (2), the anti-rollover component (2) being arranged on the base body (1) and capable of telescopic sliding adjustment along the front-rear direction of the base body (1), and the anti-rollover component (2) being configured to abut against and fit against a car seat backrest to achieve anti-rollover; An anti-turnover locking mechanism (3), wherein the anti-turnover locking mechanism (3) is located between the base body (1) and the anti-turnover assembly (2) and is used to lock the anti-turnover assembly (2) relative to the base body (1); An anti-turnover unlocking mechanism (4), the anti-turnover unlocking mechanism (4) being located on the base body (1) or the anti-turnover component (2) and being used to link the unlocking action of the anti-turnover locking mechanism (3); An ISOFIX interface component (5), wherein the ISOFIX interface component (5) is arranged on the anti-rollover component (2).

2. A retractable anti-flip car safety seat base according to claim 1, characterized in that A guide structure (6) for guiding the sliding path of the anti-flipping component (2) is provided between the anti-flipping component (2) and the base body (1).

3. A retractable anti-flip car safety seat base according to claim 2, characterized in that The guide structure (6) comprises a guide strip hole (61) provided on the anti-turnover component (2) and extending along the front-rear direction of the base body (1), and a guide rod (62) provided on the base body (1) and slidably guided with the guide strip hole (61).

4. The retractable anti-flip car safety seat base according to claim 1, characterized in that The anti-turnover assembly (2) comprises an anti-turnover sliding frame (21) slidably arranged on a base body (1) and an anti-turnover abutment portion (22) connected to the rear end of the anti-turnover sliding frame (21), wherein the anti-turnover abutment portion (22) has an abutment surface (220) abutting against a backrest of a car seat; the base body (1) is provided with a base slide groove (11) extending along its front-rear direction and slidably connected to the anti-turnover sliding frame (21); the anti-turnover locking mechanism (3) is located between the base body (1) and the anti-turnover sliding frame (21).

5. A retractable anti-flip car safety seat base according to claim 4, characterized in that The anti-turnover locking mechanism (3) comprises a locking groove (34) arranged on the anti-turnover sliding frame (21), a locking movable block (35) is slidably arranged in the locking groove (34), and an anti-turnover locking piece (32) is synchronously connected between the two locking movable blocks (35); the anti-turnover locking mechanism (3) also comprises anti-turnover locking clamping parts (31) arranged at intervals along the front-to-back direction on the base body (1) for the anti-turnover locking piece (32) to be clamped, a locking reset part (33) is arranged between the locking movable block (35) and the bottom of the locking groove (34) for elastically pressing the locking movable block (35) so that the anti-turnover locking piece (32) remains clamped in the anti-turnover locking clamping part (31), and the locking movable block (35) is configured to be unlocked by the anti-turnover unlocking mechanism (4).

6. The retractable anti-flip car safety seat base according to claim 5, characterized in that The anti-flip unlocking mechanism (4) comprises an anti-flip unlocking rod (41) and an anti-flip operating rod (42); the middle portion of the anti-flip unlocking rod (41) is rotatably connected to the anti-flip sliding frame (21); the front end of the anti-flip unlocking rod (41) can press against the upper surface of the locking movable block (35) to make the anti-flip locking piece (32) disengage from the anti-flip locking clamping portion (31); and the rear end of the anti-flip unlocking rod (41) is connected to the anti-flip operating rod (42).

7. The retractable anti-flip car safety seat base according to claim 4, characterized in that The rear part of the base body (1) is provided with a receiving cavity (12) for receiving the anti-turnover abutment portion (22).

8. The retractable anti-flip car safety seat base according to claim 4, characterized in that The ISOFIX interface assembly (5) comprises an ISOFIX housing (51) arranged on the side of the anti-turnover sliding frame (21); the ISOFIX housing (51) is slidably and adjustably connected to an ISOFIX sleeve core (52); and an ISOFIX telescopic adjustment mechanism (53) is arranged between the ISOFIX housing (51) and the ISOFIX sleeve core (52).

9. The retractable anti-flip car safety seat base according to claim 8, characterized in that The anti-turnover sliding frame (21), the anti-turnover abutment portion (22) and the ISOFIX housing (51) are integrally formed by plastic.

10. The retractable anti-flip car safety seat base according to claim 9, characterized in that An anti-turnover reinforcement pipe (23) is provided between the anti-turnover sliding frame (21) and the anti-turnover abutment portion (22).

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