Sand-proof safety belt retractor and safety belt assembly

Abstract

The utility model provides a sand-proof type safety belt retractor and a safety belt assembly, the sand-proof type safety belt retractor comprises a machine frame, a clockwork spring assembly, a locking assembly and a reel used for winding a safety belt, the machine frame is provided with a first shaft hole and a second shaft hole, and the first shaft hole and the second shaft hole are arranged in a left-right spaced mode. One end of the reel penetrates through the first shaft hole to be combined with the locking assembly, and the other end of the reel penetrates through the second shaft hole to be combined with the spring assembly. The first shaft hole and the second shaft hole are each provided with a sealing assembly so that sand can be prevented from flowing into the locking assembly and the spring assembly. The safety belt retractor has the sand prevention function and can adapt to the special environment of the dune buggy.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of safety belt winder, especially to a sandproof safety belt winder and safety belt assembly. BACKGROUND

[0002] In the current sand vehicle market, the safety belt as an important part to protect the driver and passenger safety, its performance and stability are very important. However, the ordinary winder has significant problems in this specific application scene of sand vehicle.

[0003] Because there are a lot of sand on the beach, but the internal structure of the existing safety belt winder does not have special sandproof treatment for this special environment of sand vehicle. During the driving process of the sand vehicle, a large amount of sand particles are generally accumulated in the inside of these winders. These sand particles not only aggravate the wear of the plastic parts inside the winder, but also cause the decline of the overall sensitivity of the winder, thereby affecting its normal work.

[0004] In view of the above problems, we urgently need a safety belt winder that can adapt to the special environment of sand vehicle and has sandproof function. INVENTION CONTENTS

[0005] In order to solve the problems existing in the prior art, the utility model provides a sandproof safety belt winder and safety belt assembly, which can adapt to the special environment of sand vehicle and has sandproof function.

[0006] The utility model adopts the following technical scheme:

[0007] The utility model provides a sandproof safety belt winder, including machine frame, clockwork assembly, locking assembly and the reel for winding safety belt, the machine frame has the first shaft hole and the second shaft hole that are arranged at left and right intervals, one end of the reel passes through the first shaft hole and is combined with the locking assembly, the other end passes through the second shaft hole and is combined with the clockwork assembly, the first shaft hole and the second shaft hole are all configured with sealing assembly, so as to prevent sand from flowing into the locking assembly and clockwork assembly.

[0008] Further, the sealing assembly includes first sealing piece and second sealing piece arranged in the axial direction of the reel in turn, the first sealing piece is arranged at the inside of the reel in the machine frame, and the second sealing piece is arranged at the outside of the reel extending out of the machine frame.

[0009] Further, the reel includes main body part and connecting part at both ends of the main body part, the outer diameter of the connecting part is less than the outer diameter of the main body part, the first sealing piece is fixedly connected to the main body part, and the second sealing piece is fixedly connected to the connecting part.

[0010] Further, the first seal has a first outer flange abutting against an inner side wall of the machine frame.

[0011] Further, a tape winding wheel is further included, the tape winding wheel is sleeved on the winding shaft, and the first seal is located between the tape winding wheel and the machine frame.

[0012] Further, the second seal has an inner liner in an inverted conical structure to tightly fit the winding shaft.

[0013] Further, the locking assembly includes a first bottom plate, a first outer shell and a locking mechanism, the first bottom plate is fixed to one side of the machine frame, the first outer shell is fixed to the outer side of the first bottom plate and forms a cavity suitable for accommodating the locking mechanism between the first bottom plate and the first outer shell, one end of the winding shaft is connected with the locking mechanism through the first bottom plate, and the sealing assembly is arranged between the first bottom plate and the machine frame.

[0014] Further, the first bottom plate is provided with a first sealing cavity opposite to the side wall of the first shaft hole, and the second seal is arranged in the first sealing cavity.

[0015] Further, the spring assembly includes a second bottom plate, a second outer shell and a spring mechanism, the second bottom plate is fixed to the other side of the machine frame, the second outer shell is fixed to the outer side of the second bottom plate and forms a cavity suitable for accommodating the spring mechanism between the second bottom plate and the second outer shell, the other end of the winding shaft is connected with the spring mechanism through the second bottom plate, and the sealing assembly is arranged between the second bottom plate and the machine frame.

[0016] The utility model further provides a safety belt assembly, including safety belt and above-mentioned sandproof safety belt winding device.

[0017] Due to the adoption of the above technical scheme, the utility model has the following technical effects:

[0018] In the application, the sealing assembly is arranged at the first shaft hole and the second shaft hole of the machine frame, sand particles are effectively prevented from entering the inside, the abrasion of sand particles to the plastic parts and other internal components is avoided, and the service life of the winding device is significantly improved; this improvement enables the winding device to maintain stable performance in a sand beach environment with more sand and dust, and reduces the failure rate caused by sand particle intrusion.

[0019] The sealing assembly includes a first seal and a second seal arranged in sequence in the axial direction of the winding shaft, the first seal is arranged at the inner side of the winding shaft in the machine frame, and the second seal is arranged at the outer side of the winding shaft extending out of the machine frame; sand protection is simultaneously performed on the inner and outer sides of the shaft hole, the sand prevention performance of the winding device is further improved, and the use effect is improved. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the drawings of the embodiments will be briefly introduced as follows. Obviously, the drawings described in the following description only relate to some embodiments of the present application and are not intended to limit the present application.

[0021] Figure 1 is a structural schematic view of the sandproof safety belt retractor in the present application.

[0022] Figure 2 is an exploded schematic view of the sandproof safety belt retractor in the present application.

[0023] Figure 3 is a structural schematic view of the spool and sealing assembly in the present application.

[0024] Figure 4 is a sectional view of the sandproof safety belt retractor in the present application.

[0025] Figure 5 is Figure 4 is an enlarged view of A in the present application.

[0026] Reference signs: 1-machine frame; 11-first shaft hole; 12-second shaft hole; 20-spring assembly; 21-second bottom plate; 22-second outer shell; 23-spring mechanism; 30-locking assembly; 31-first bottom plate; 32-first outer shell; 33-locking mechanism; 4-spool; 41-main body part; 42-connection part; 5-sealing assembly; 51-first sealing member; 51a-outer flange; 52-second sealing member; 52a-inner liner; 6-belt winding wheel; 7-safety belt. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical scheme and advantages of the embodiments of the present application more clear, the present application will be further described in detail below with reference to the drawings. The components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0028] It should be noted that: similar reference signs and letters represent similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

[0029] Unless otherwise defined, technical terms or scientific terms used in the present patent document shall have the ordinary meanings as understood by one of ordinary skill in the art to which the present patent belongs. The terms "first", "second", and similar terms used in the patent specification and claims of the present patent do not denote any order, quantity, or importance, but are used to distinguish different components. Similarly, the terms "one", "a", or "the" do not denote a quantity limitation, but indicate the presence of at least one. The terms "including" or "comprising" and similar terms mean that the elements or objects before the "including" or "comprising" are inclusive of the elements or objects listed after the "including" or "comprising" and equivalents thereof, and do not exclude other elements or objects. The terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like are used only to indicate relative positional relationships, which may change when the absolute positions of the described objects change, and are only used to facilitate the description of the present patent and simplify the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present patent.

[0030] In the description of the present patent, it should be noted that, unless otherwise explicitly specified and limited, the terms "mounting", "connection", and "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication between two elements inside. For those of ordinary skill in the art, the specific meanings of the above terms in the present patent can be understood according to the specific circumstances.

[0031] Some embodiments of the present patent will be described in detail below with reference to the accompanying drawings. The features in the following examples can be combined with each other without conflict.

[0032] Please refer to Figures 1 to 5 As shown in the drawings, the present patent provides a sandproof safety belt winder, which comprises a machine frame 1, a clockwork assembly 20, a locking assembly 30, and a reel 4 for winding a safety belt 7. The machine frame 1 has a first shaft hole 11 and a second shaft hole 12 arranged at intervals on the left and right sides. One end of the reel 4 passes through the first shaft hole 11 and is combined with the locking assembly 30, and the other end passes through the second shaft hole 12 and is combined with the clockwork assembly 20. The first shaft hole 11 and the second shaft hole 12 are both provided with a sealing assembly 5 to prevent sand from flowing into the locking assembly 30 and the clockwork assembly 20.

[0033] Further, the sealing assembly 5 comprises a first sealing member 51 and a second sealing member 52 arranged in sequence along the axial direction of the reel 4, the first sealing member 51 is arranged at the inner side of the reel 4 of the machine frame 1, and the second sealing member 52 is arranged at the outer side of the reel 4 extending out of the machine frame 1, which can simultaneously perform double sealing on the inner and outer sides of the first shaft hole 11 and the second shaft hole 12 respectively, thereby improving the sand prevention effect.

[0034] As shown in Figures 3 to 5 The reel 4 comprises a main body part 41 and a connecting part 42 at both ends of the main body part 41, the outer diameter of the connecting part 42 is smaller than that of the main body part 41, the first sealing member 51 is fixedly connected to the main body part 41, and the second sealing member 52 is fixedly connected to the connecting part 42, further, the first sealing member 51 has a first outer flange 51a, which abuts against the inner side wall of the machine frame 1 during installation, thereby improving the sealing performance of the two; the second sealing member 52 has an inner liner 52a in an inverted conical structure, which can limit the movement of the second sealing member 52 and increase the adhesion with the reel 4, thereby further improving the sand prevention effect.

[0035] In the embodiment, a belt winding wheel 6 is further included, which is sleeved on the reel, the safety belt 7 is sleeved on the reel, and the first sealing member 51 is located between the belt winding wheel 6 and the machine frame 1, the first sealing member 51 is preferably a rubber sealing ring, which can improve the sealing performance with the first shaft hole 11 or the second shaft hole 12, and also can dampen and limit the belt winding wheel 6, thereby ensuring the stability of the rotation of the belt winding wheel 6, and further improving the smoothness and stability of the pulling of the safety belt 7.

[0036] As shown in Figure 2 and Figure 4As shown, the locking assembly 30 comprises a first bottom plate 31, a first outer shell 32 and a locking mechanism 33, the first bottom plate 31 is fixed to one side of the machine frame 1, the first outer shell 32 is fixed to the outer side of the first bottom plate 31 and forms a cavity suitable for accommodating the locking mechanism 33 between the two, one end of the reel 4 passes through the first bottom plate 31 and is connected with the locking mechanism 33, the sealing assembly 5 is arranged between the first bottom plate 31 and the machine frame 1, further, the first bottom plate 31 is provided with a first sealing cavity opposite the side wall of the first shaft hole 11, and the second sealing element 52 is arranged in the first sealing cavity, so that the sealing performance at the first shaft hole 11 is further improved, and the sand prevention effect is good; it should be noted that the locking mechanism 33 comprises a ratchet wheel, a ratchet tooth and a vehicle sensing element, the ratchet wheel and the ratchet tooth are matched to control the pulling of the safety belt 7, and the vehicle sensing element can detect the acceleration change of the vehicle, when the vehicle has an unexpected situation, such as acceleration change increases or sudden stop, etc., the pawl is pushed into the ratchet tooth by the vehicle sensing element, thereby limiting the movement of the safety belt 7, thereby stabilizing the body of the personnel, in the embodiment, the locking mechanism 33 can also be the same as the ratchet structure of the existing product reel, and the utility model is not limited thereto.

[0037] As shown in Figure 2 and Figure 4 As shown, the clockwork assembly 20 comprises a second bottom plate 21, a second outer shell 22 and a clockwork mechanism 23, the second bottom plate 21 is fixed to the other side of the machine frame 1, the second outer shell 22 is fixed to the outer side of the second bottom plate 21 and forms a cavity suitable for accommodating the clockwork mechanism 23 between the two, the other end of the reel 4 passes through the second bottom plate 21 and is connected with the clockwork mechanism 23, and the sealing assembly 5 is arranged between the second bottom plate 21 and the machine frame 1; similarly, the second bottom plate 21 is also provided with a second sealing cavity opposite the side wall of the second shaft hole 12, and the second sealing element 52 is correspondingly arranged in the second sealing cavity, so that the sealing performance at the second shaft hole 12 is further improved, and the sand prevention effect is good; the clockwork mechanism comprises a clockwork and an end shaft for connecting the clockwork, the end shaft is connected to the reel 4, and one end of the clockwork is connected to the end shaft, thereby providing power for the pulling of the safety belt 7.

[0038] The utility model also provides a safety belt assembly which comprises a safety belt 7 and the sandproof safety belt reel, and can maintain stable performance in a sand beach vehicle environment with more sand, reduces the failure rate caused by sand particles, and is durable, safe and practical to use.

[0039] The above merely describes a specific implementation of the present application, but the protection scope of the present application is not limited thereto, any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the present application, which should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A sand-proof type seat belt retractor comprising a housing frame, a clockwork assembly, a locking assembly, and a spool for winding a seat belt, characterized in that, The machine frame has a first shaft hole and a second shaft hole arranged at left and right intervals, one end of the reel is combined with the locking assembly by penetrating the first shaft hole, and the other end of the reel is combined with the clockwork assembly by penetrating the second shaft hole; the first shaft hole and the second shaft hole are both configured with a sealing assembly to prevent sand from flowing into the locking assembly and the clockwork assembly.

2. The sand guard type seat belt retractor according to claim 1, wherein The sealing assembly comprises a first sealing member and a second sealing member arranged in sequence in the axial direction of the reel, the first sealing member is arranged at the inner side of the reel in the machine frame, and the second sealing member is arranged at the outer side of the reel extending out of the machine frame.

3. The sand guard type seat belt retractor according to claim 2, wherein The reel comprises a main body and a connecting portion at both ends of the main body, the outer diameter of the connecting portion is smaller than the outer diameter of the main body, the first sealing member is fixed to the main body, and the second sealing member is fixed to the connecting portion.

4. The sand type safety belt retractor according to claim 2 or 3, characterized by The first sealing member has a first outer flange abutting against the inner wall of the machine frame.

5. The sand guard type seat belt retractor according to claim 4, wherein Further comprising a tape winding wheel sleeved on the reel, and the first sealing member is located between the tape winding wheel and the machine frame.

6. The sand guard type seat belt retractor according to claim 2 or 3, wherein The second sealing member has an inner liner in an inverted conical structure to tightly adhere to the reel.

7. The sand guard type seat belt retractor according to claim 6, wherein The locking assembly comprises a first bottom plate, a first housing and a locking mechanism, the first bottom plate is fixed to one side of the machine frame, the first housing is fixed to the outer side of the first bottom plate and forms a cavity suitable for accommodating the locking mechanism between the two, one end of the reel is connected with the locking mechanism by penetrating the first bottom plate, and the sealing assembly is arranged between the first bottom plate and the machine frame.

8. The sand guard type seat belt retractor according to claim 7, wherein The first bottom plate is provided with a first sealing cavity opposite to the side wall of the first shaft hole, and the second sealing member is arranged in the first sealing cavity.

9. The sand guard type seat belt retractor according to claim 1, wherein The clockwork assembly comprises a second bottom plate, a second housing and a clockwork mechanism, the second bottom plate is fixed to the other side of the machine frame, the second housing is fixed to the outer side of the second bottom plate and forms a cavity suitable for accommodating the clockwork mechanism between the two, the other end of the reel is connected with the clockwork mechanism by penetrating the second bottom plate, and the sealing assembly is arranged between the second bottom plate and the machine frame.

10. A seat belt assembly characterized by, The safety belt and the sand-proof safety belt retractor according to any one of claims 1-9 are included.

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