Safety belt adjusting mechanism

Abstract

The invention discloses a safety belt adjusting mechanism, a baby stroller, an automobile seat, a dining rocking chair and a bicycle seat. The safety belt adjusting mechanism comprises a first backrest part, a second backrest part, a connecting part, a first locking device, a second locking device, a first safety belt, a second safety belt, a first elastic connecting piece, a second elastic connecting piece, a first extension rope, a second extension rope and an operation connecting rod. According to the safety belt locking device, unlocking operation can be synchronously conducted on the first locking device and the second locking device by operating the connecting rod, the first safety belt is released by the first locking device, the moving end of the first safety belt is automatically pulled by the first elastic connecting piece to move towards the first elastic connecting piece, and tightening of the first safety belt is achieved. Similarly, the second safety belt can also be automatically tightened synchronously. Therefore, when a user needs to adjust the tightness of the two safety belts of the safety belt adjusting mechanism, each safety belt does not need to be adjusted independently, operation is easy, and consumed time is short.

Description

TECHNICAL FIELD

[0001] The present application relates to a safety belt adjusting mechanism, a baby stroller, a car seat, a dining rocker, a bicycle seat. BACKGROUND

[0002] One specific form of safety belt is a five-point safety belt, which includes two shoulder belts, two crotch / waist belts and a central buckle between the two legs. The five-point safety belt has five points of restraint, including one under the crotch, two on the waist and two on the shoulders, covering the main parts of the human body, so that when a strong impact occurs, the same pressure can be dissipated over a larger area of the body using a five-point safety belt, thereby reducing the pressure on a single point and reducing the damage to the human body from such impacts.

[0003] For this reason, considering the immature development of the human body such as the skeletal tissue of children, in the design of seats for children to ride, a five-point safety belt is used to distribute and dissipate the impact pressure on various parts of the body, thereby reducing the impact on the child's body in the event of a car accident.

[0004] However, the existing safety belt adjusting mechanism requires separate adjustment of each shoulder belt or waist belt when adjusting the tightness of the shoulder belt or waist belt, which is complex to operate and time-consuming. The existing safety belt shoulder belts and waist belts are often arranged separately, which not only requires separate adjustment, but also is complex to operate and time-consuming, and the shoulder belts and waist belts have long tail ends, which affects the riding experience.

[0005] Therefore, it is an urgent technical problem for those skilled in the art to provide an improved safety belt adjusting mechanism based on the deficiencies of the prior art. SUMMARY

[0006] The technical problem to be solved by the present application is to overcome the defects in the prior art and provide a safety belt adjusting mechanism, a baby stroller, a car seat, a dining rocker and a bicycle seat.

[0007] The present application solves the above technical problems by the following technical solutions:

[0008] A safety belt adjusting mechanism, characterized in that it comprises:

[0009] a first backrest portion;

[0010] a second backrest portion;

[0011] a connecting portion connecting the first backrest portion and the second backrest portion;

[0012] a first locking device installed on the connecting portion or the first backrest portion;

[0013] A second locking device is installed on the connecting part or the second backrest part;

[0014] A first safety belt includes a fixed end and a moving end, the first safety belt is arranged through the first locking device, and the first safety belt can be locked or released by the first locking device;

[0015] A second safety belt includes a fixed end and a moving end, the second safety belt is arranged through the second locking device, and the second safety belt can be locked or released by the second locking device;

[0016] A first elastic connecting part is connected with the first backrest part, and a first passing part is arranged on the first elastic connecting part;

[0017] A second elastic connecting part is connected with the second backrest part, and a second passing part is arranged on the second elastic connecting part;

[0018] A first extension rope is connected with the first backrest part at one end and connected with the moving end of the first safety belt through the first passing part at the other end, and the first extension rope is pulled tight by the first elastic connecting part;

[0019] A second extension rope is connected with the second backrest part at one end and connected with the moving end of the second safety belt through the second passing part at the other end, and the second extension rope is pulled tight by the second elastic connecting part;

[0020] An operation connecting rod is connected with the first locking device and the second locking device, and the operation connecting rod simultaneously unlocks the first locking device and the second locking device.

[0021] In some embodiments, the first elastic connecting part has a tensile length less than a moving length of the first safety belt;

[0022] And / or, the second elastic connecting part has a tensile length less than a moving length of the second safety belt.

[0023] In some embodiments, the first locking device includes:

[0024] A first adjusting base;

[0025] A first locking part is rotatably installed in the first adjusting base;

[0026] A first elastic part is installed at a connection between the first locking part and the first adjusting base, the first elastic part is configured to keep the first locking part close to a side wall of the first adjusting base to press the first safety belt, and a friction force between the first locking part and the first safety belt is greater than a pulling force of the first elastic connecting part;

[0027] The second locking device comprises:

[0028] A second adjusting base;

[0029] A second locking member rotatably mounted in the second adjusting base;

[0030] A second elastic member mounted at the connection between the second locking member and the second adjusting base, configured to keep the second locking member close to the sidewall of the second adjusting base to press the second safety belt, the friction between the second locking member and the second safety belt being greater than the pulling force of the second elastic connecting member;

[0031] The operation connecting rod is connected at one end to the first locking member and at the other end to the second locking member, and the operation connecting rod drives the first locking member and the second locking member to rotate synchronously.

[0032] In some embodiments, the first locking member is provided with a plurality of clamping teeth on one side close to the sidewall of the first adjusting base;

[0033] And / or, the second locking member is provided with a plurality of clamping teeth on one side close to the sidewall of the second adjusting base.

[0034] In some embodiments, the first safety belt comprises a first shoulder strap part and a first waist strap part, and the first shoulder strap part and the first waist strap part are in one-piece structure;

[0035] And / or, the second safety belt comprises a second shoulder strap part and a second waist strap part, and the second shoulder strap part and the second waist strap part are in one-piece structure.

[0036] In some embodiments, the first backrest part, the second backrest part and the connecting part are in one-piece structure or split structure.

[0037] In some embodiments, the first elastic connecting member is a first tension spring, one end of the first tension spring is connected to the first backrest part, and the other end of the first tension spring is provided with the first passing part, and the first passing part is a tail ring.

[0038] And / or, the second elastic connecting member is a second tension spring, one end of the second tension spring is connected to the second backrest part, and the other end of the second tension spring is provided with the second passing part, and the second passing part is a tail ring.

[0039] A baby stroller comprising the safety belt adjusting mechanism as described above.

[0040] An automobile seat comprising the safety belt adjusting mechanism as described above.

[0041] A dining rocker comprising the safety belt adjusting mechanism as described above.

[0042] A bicycle seat that includes the aforementioned seatbelt adjustment mechanism.

[0043] Based on common knowledge in the field, the above-mentioned preferred conditions can be combined arbitrarily to obtain various preferred embodiments of the present invention.

[0044] The significant advantages of this invention are as follows: By operating the linkage, the first and second locking devices can be unlocked simultaneously. The first seatbelt is released by the first locking device, and its moving end is automatically pulled towards the first elastic connector, thus tightening the first seatbelt. Simultaneously, the second seatbelt is released by the second locking device, and its moving end is automatically pulled towards the second elastic connector, thus tightening the second seatbelt. Therefore, when the user needs to adjust the tension of the two seatbelts in this embodiment's seatbelt adjustment mechanism, it is no longer necessary to adjust each seatbelt individually, simplifying the operation and reducing time consumption. Furthermore, by incorporating the first and second extension ropes in conjunction with other corresponding structures, the first and second elastic connectors can be miniaturized, reducing weight and saving costs. Attached Figure Description

[0045] Figure 1 This is a schematic diagram of the seat belt adjustment mechanism according to a preferred embodiment of the present invention.

[0046] Figure 2 This is a diagram showing the state in which the first locking member of the first locking device of the preferred embodiment of the present invention presses down and locks the first seat belt.

[0047] Figure 3 This is a diagram showing the state of the first locking member of the first locking device releasing the first seat belt, according to a preferred embodiment of the present invention.

[0048] Figure 4 This is a diagram showing the movement direction of the operating linkage, the first safety belt, and the second safety belt, according to a preferred embodiment of the present invention.

[0049] Figure 5 The diagram shows a preferred embodiment of the present invention, in which both the first and second safety belts are integrated structures.

[0050] Figure 6 This is a schematic diagram of the seat belt adjustment mechanism installed on a rocking chair according to a preferred embodiment of the present invention.

[0051] Figure 7 This is a schematic diagram of a seat belt adjustment mechanism installed in a car seat according to a preferred embodiment of the present invention.

[0052] Figure 8This is a schematic diagram of the safety belt adjustment mechanism of a preferred embodiment of the present invention installed on a baby stroller.

[0053] Figure 9 This is a schematic diagram of a seat belt adjustment mechanism installed on a bicycle seat according to a preferred embodiment of the present invention.

[0054] Explanation of reference numerals in the attached figures:

[0055] First backrest section 1

[0056] Second backrest 2

[0057] Connecting part 3

[0058] First locking device 4

[0059] First adjustment base 41

[0060] First locking element 42

[0061] First elastic element 43

[0062] Rivet 44

[0063] Second locking device 5

[0064] First seat belt 6

[0065] First shoulder strap section 61

[0066] First belt section 62

[0067] Second seatbelt 7

[0068] Second shoulder strap section 71

[0069] Second belt section 72

[0070] First elastic connector 8

[0071] First Passage Section 81

[0072] Second elastic connector 9

[0073] Second passage section 91

[0074] First extension rope 10

[0075] Second extension rope 1011

[0076] Operating linkage 1012 Detailed Implementation

[0077] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present invention or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0078] It should be noted that in the claims and specification of this patent, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one" does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes the element.

[0079] like Figures 1-5 As shown, this embodiment discloses a seat belt adjustment mechanism, which includes: a first backrest part 1, a second backrest part 2, a connecting part 3, a first locking device 4, a second locking device 5, a first seat belt 6, a second seat belt 7, a first elastic connector 8, a second elastic connector 9, a first extension rope 10, a second extension rope 1011, and an operating linkage 1012.

[0080] The first backing part 1 and the second backing part 2 can be tubular structures, rod-shaped, plate-shaped structures, or other shapes.

[0081] The connecting part 3 connects the first backing part 1 and the second backing part 2. The connecting part 3 can also be a tubular structure, or a rod-shaped, plate-shaped structure, or other shapes. The first backing part 1, the second backing part 2, and the connecting part 3 can be an integral structure, separate units, or three parts of a single integral structure. When the three units are integrated, the overall structural strength is enhanced; when they are separate units, transportation and storage are facilitated.

[0082] The first locking device 4 is installed on the connecting part 3 or the first backing part 1.

[0083] The second locking device 5 is installed on the connecting part 3 or the second backing part 2.

[0084] The first seat belt 6 includes a fixed end and a movable end. The first seat belt 6 is threaded through the first locking device 4 and can be locked or released by the first locking device 4. When the first locking device 4 is not operated, the first seat belt 6 is locked by the first locking device 4 and cannot move. Only when the first locking device 4 is unlocked will the first locking device 4 release the first seat belt 6, allowing the first seat belt 6 to move.

[0085] The second seat belt 7 includes a fixed end and a movable end. The second seat belt 7 is threaded through the second locking device 5 and can be locked or released by the second locking device 5. When the second locking device 5 is not operated, the second seat belt 7 is locked by the second locking device 5 and cannot move. Only when the second locking device 5 is unlocked will the second locking device 5 release the second seat belt 7, allowing the second seat belt 7 to move.

[0086] The first elastic connector 8 is connected to the first backing part 1, and the first elastic connector 8 is provided with a first passage part 81.

[0087] The second elastic connector 9 is connected to the second backing part 2, and the second elastic connector 9 is provided with a second passage part 91.

[0088] One end of the first extension rope 10 is connected to the first backrest part 1, and the other end passes through the first passage part 81 and is connected to the movable end of the first seat belt 6 or other nearby position. The first extension rope 10 is tightened by the first elastic connector 8. That is, the first elastic connector 8 is in a stretched state by default and always applies tension to the first extension rope 10, so that the movable end of the first seat belt 6 moves toward the first elastic connector 8.

[0089] One end of the second extension rope 1011 is connected to the second backrest part 2, and the other end passes through the second passage part 91 and is connected to the movable end of the second safety belt 7 or to another nearby location. The second extension rope 1011 is taut by the second elastic connector 9. That is, the second elastic connector 9 is in a stretched state by default, and always applies tension to the second extension rope 1011, so that the movable end of the second safety belt 7 moves toward the second elastic connector 9.

[0090] The operating linkage 1012 connects the first locking device 4 and the second locking device 5, and the operating linkage 1012 can unlock the first locking device 4 and the second locking device 5 simultaneously.

[0091] In this embodiment, using the above-described structure, the first locking device 4 and the second locking device 5 can be unlocked simultaneously via the operating linkage 1012. The first seat belt 6 is released by the first locking device 4, and the moving end of the first seat belt 6 is automatically pulled towards the first elastic connector 8, thus tightening the first seat belt 6. Simultaneously, the second seat belt 7 is released by the second locking device 5, and the moving end of the second seat belt 7 is automatically pulled towards the second elastic connector 9, thus tightening the second seat belt 7.

[0092] Therefore, when the user needs to adjust the tightness of the two seat belts in this embodiment's seat belt adjustment mechanism, it is no longer necessary to adjust each seat belt individually, making the operation simple and time-saving. Furthermore, since the required adjustment range of the seat belts is relatively large, if the first elastic connector 8 were directly connected to the first extension rope 10, and the second elastic connector 9 were directly connected to the second extension rope 1011, then a very large first elastic connector 8 and second elastic connector 9 would be required. Therefore, in this embodiment, by setting the first extension rope 10 and the second extension rope 1011 to cooperate with other corresponding structures, the first elastic connector 8 and the second elastic connector 9 can be miniaturized, which not only reduces weight but also saves costs.

[0093] Further, in this embodiment, the stretching length of the first elastic connector 8 is less than the moving length of the first seat belt 6. Preferably, the ratio of the stretching length of the first elastic connector 8 to the moving length of the first seat belt 6 is 1:2, that is, for every unit change in length of the first elastic connector 8, the first seat belt 6 is pulled and moved a distance of two units. Similarly, the stretching length of the second elastic connector 9 is less than the moving length of the second seat belt 7. Preferably, the ratio of the stretching length of the second elastic connector 9 to the moving length of the second seat belt 7 is 1:2, that is, for every unit change in length of the second elastic connector 9, the second seat belt 7 is pulled and moved a distance of two units.

[0094] In this embodiment, by setting the stretching lengths of the first elastic connector 8 and the second elastic connector 9 to be less than the movement length of the first seat belt 6 and the length of the second seat belt 7, it is ensured that the elastic connectors can effectively provide the required force when stretched, so as to achieve rapid tightening of the seat belt.

[0095] Furthermore, in this embodiment, the first locking device 4 includes a first adjusting base 41, a first locking member 42, and a first elastic member 43.

[0096] The first adjustment base 41 is fixed to the mounting connector 3 by screws.

[0097] The first locking element 42 is rotatably mounted in the first adjusting base 41 by means of a rivet.

[0098] The first elastic member 43 is installed at the connection between the first locking member 42 and the first adjusting base 41. The first elastic member 43 is configured to cause the first locking member 42 to move along... Figure 2 The first seat belt 6 is pressed down by moving clockwise towards the side wall of the first adjusting base 41. The friction between the first locking member 42 and the first seat belt 6 is greater than the tension of the first elastic connector 8, ensuring that the first seat belt 6 cannot slide freely downwards (towards the first elastic connector 8). In this embodiment, the first elastic member 43 is a torsion spring, but it is not limited to this.

[0099] The second locking device 5 includes a second adjusting base, a second locking element, and a second elastic element.

[0100] The second adjustment base is fixed to the connector 3 by screws and is kept at a certain distance from the first adjustment base 41.

[0101] The second locking element is rotatably mounted in the second adjusting base by means of a rivet.

[0102] The second elastic element is installed at the connection between the second locking element and the second adjusting base. The second elastic element is configured to keep the second locking element close to the side wall of the second adjusting base to press down the second seat belt 7. The frictional force between the second locking element and the second seat belt 7 is greater than the tension of the second elastic connector 9, ensuring that the second seat belt 7 cannot slide freely downwards (towards the second elastic connector 9). In this embodiment, the second elastic element is a torsion spring, but it is not limited to this.

[0103] One end of the operating linkage 1012 is connected to the first locking member 42, and the other end is connected to the second locking member. The operating linkage 1012 drives the first locking member 42 and the second locking member to rotate synchronously.

[0104] In this embodiment, taking the first locking device 4 as an example, when the operating lever is lifted upwards, the operating lever drives the first locking member 42 to rotate clockwise. When the gap between the first locking member 42 and the side wall of the adjusting base is greater than the thickness of the first seat belt 6, the first seat belt 6 can move freely, thereby realizing the function of tightening and loosening the first seat belt 6. The principle of the second locking device 5 is the same. Figure 4 As shown, (1) Seat belt tightening operation: Lift the operating linkage 1012 in the direction of arrow A in the icon, and the first seat belt 6 and the second seat belt 7 will tighten automatically under the pull of the corresponding elastic connector. (2) Seat belt loosening operation: Pull the operating linkage 1012 in the direction of arrow A in the icon, and at the same time pull the first seat belt 6 and the second seat belt 7 in the direction of B.

[0105] The design of the first locking element 42 and the second locking element, combined with the configuration of the elastic element, provides stable structural support, ensuring the reliability of the seat belt under various usage conditions. In this embodiment, the first locking device 4 and the second locking device 5 have a simple, stable, and durable structure, saving costs on the seat belt adjustment mechanism and extending its service life.

[0106] Furthermore, in this embodiment, the first locking member 42 has multiple locking teeth on the side near the side wall of the first adjusting base 41. The second locking member has multiple locking teeth on the side near the side wall of the second adjusting base.

[0107] In the seatbelt adjustment mechanism of this embodiment, the first locking member 42 and the second locking member are provided with multiple locking teeth on the side near their respective adjustment base sidewalls. The presence of the locking teeth provides additional locking points, making the seatbelt more secure in the locking device and improving the safety of the seatbelt system. The locking teeth can precisely cooperate with the corresponding structures on the seatbelt, making the seatbelt adjustment more precise and ensuring that the position and tension of the seatbelt meet the passenger's needs. In the event of emergency braking or collision, the locking teeth can prevent the seatbelt from slipping in the locking member, ensuring that the seatbelt can provide sufficient restraint force at critical moments.

[0108] Furthermore, such as Figure 5 As shown, in this embodiment, the first seat belt 6 includes a first shoulder strap portion 61 and a first waist belt portion 62, which are integrally formed. The second seat belt 7 includes a second shoulder strap portion 71 and a second waist belt portion 72, which are integrally formed.

[0109] In this embodiment, the first shoulder strap 61 and the first waist belt 62 are combined into a first seat belt 6, and the second shoulder strap 71 and the second waist belt 72 are combined into a second seat belt 7. Therefore, the shoulder straps and waist belts of both can be adjusted simultaneously, making operation simple and quick. Furthermore, neither the first seat belt 6 nor the second seat belt 7 has any excess exposed parts, so they do not obstruct the passenger's movement, resulting in a better riding experience.

[0110] Furthermore, in this embodiment, the first elastic connector 8 is a first tension spring, one end of which is connected to the first backing portion 1, and the other end of which is provided with a first passage portion 81, which is a tail ring. The second elastic connector 9 is a second tension spring, one end of which is connected to the second backing portion 2, and the other end of which is provided with a second passage portion 91, which is a tail ring.

[0111] Using a tension spring as the elastic connector in this example allows for a more compact seatbelt adjustment mechanism, reducing space requirements. Furthermore, the tension spring provides a rapid response, quickly tightening the seatbelt. Standardized tension spring assemblies reduce production costs and facilitate mass production.

[0112] This embodiment also discloses a method such as Figure 6 The dining rocking chair shown is a type of... Figure 7 The car seat shown, one such as Figure 8 The stroller shown, and a type of... Figure 9 The bicycle seats shown all include the aforementioned seatbelt adjustment mechanism.

Claims

1. A seatbelt adjustment mechanism, characterized in that, include: First backrest section; Second backrest section; A connecting part connects the first backrest part and the second backrest part; A first locking device is installed on the connecting part or the first backing part; A second locking device is installed on the connecting part or the second backing part; The first safety belt includes a fixed end and a movable end. The first safety belt is threaded through the first locking device. The first safety belt can be locked or released by the first locking device. The second safety belt includes a fixed end and a movable end. The second safety belt is threaded through the second locking device. The second safety belt can be locked or released by the second locking device. A first elastic connector is connected to the first backing portion, and a first passage portion is provided on the first elastic connector; The second elastic connector is connected to the second backing part, and the second elastic connector is provided with a second passage part; The first extension rope has one end connected to the first backrest part and the other end passing through the first passage part and connected to the movable end of the first safety belt. The first extension rope is tightened by the first elastic connector. The second extension rope has one end connected to the second backrest part and the other end passing through the second passage part and connected to the movable end of the second safety belt. The second extension rope is tightened by the second elastic connector. An operating linkage connects the first locking device and the second locking device, and the operating linkage simultaneously unlocks the first locking device and the second locking device.

2. The seat belt adjustment mechanism as described in claim 1, characterized in that, The tensile length of the first elastic connector is less than the moving length of the first seat belt; And / or, the stretching length of the second elastic connector is less than the moving length of the second seat belt.

3. The seat belt adjustment mechanism as described in claim 1, characterized in that, The first locking device includes: First adjustment base; The first locking element is rotatably installed inside the first adjusting base; A first elastic element is installed at the connection between the first locking element and the first adjusting base. The first elastic element is configured to keep the first locking element close to the side wall of the first adjusting base to press down the first seat belt. The frictional force between the first locking element and the first seat belt is greater than the tensile force of the first elastic element. The second locking device includes: Second adjustment base; The second locking element is rotatably installed inside the second adjusting base; A second elastic element is installed at the connection between the second locking element and the second adjusting base. The second elastic element is configured to keep the second locking element close to the side wall of the second adjusting base to press down the second seat belt. The frictional force between the second locking element and the second seat belt is greater than the tensile force of the second elastic element. One end of the operating linkage is connected to the first locking member, and the other end is connected to the second locking member. The operating linkage drives the first locking member and the second locking member to rotate synchronously.

4. The seat belt adjustment mechanism as described in claim 3, characterized in that, The first locking member has multiple locking teeth on the side of the first adjusting base near the side wall; And / or, the second locking member is provided with a plurality of locking teeth on the side of the side wall near the second adjusting base.

5. The seat belt adjustment mechanism as described in claim 1, characterized in that, The first seat belt includes a first shoulder strap portion and a first waist belt portion, and the first shoulder strap portion and the first waist belt portion are an integral structure; And / or, the second seat belt includes a second shoulder strap portion and a second waist belt portion, wherein the second shoulder strap portion and the second waist belt portion are an integral structure.

6. The seat belt adjustment mechanism as described in claim 1, characterized in that, The first backrest, the second backrest, and the connecting part are either an integral structure or a separate structure.

7. The seat belt adjustment mechanism as described in claim 1, characterized in that, The first elastic connector is a first tension spring, one end of the first tension spring is connected to the first backing part, and the other end of the first tension spring is provided with the first through part, which is a tail ring; And / or, the second elastic connector is a second tension spring, one end of the second tension spring is connected to the second backing portion, and the other end of the second tension spring is provided with a second passage portion, which is a tail ring.

8. A baby stroller, characterized in that, Includes the seat belt adjustment mechanism as described in any one of claims 1-7.

9. A car seat, characterized in that, Includes the seat belt adjustment mechanism as described in any one of claims 1-7.

10. A dining rocking chair, characterized in that, Includes the seat belt adjustment mechanism as described in any one of claims 1-7.

11. A bicycle seat, characterized in that, Includes the seat belt adjustment mechanism as described in any one of claims 1-7.

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