Novel wedge type automobile non-return valve

Abstract

The utility model relates to the technical field of automobile starting system, especially one -way device of new -type wedge block's car, its technical scheme includes: gear seat, upper cover, connecting bolt, mounting bracket, movable wedge and inner bushing, its characterized in that: gear seat is outer ring structure, its inner wall is equipped with inclined slot, and the bottom of inner side is equipped with the installation space for accommodating inner bushing, inner bushing is arranged in the bottom of inner side of gear seat, and with gear seat constitutes the cooperation of relatively rotatable, and the top of inner bushing is provided with the screw hole, mounting bracket is located inside gear seat and is placed above inner bushing, its outside rotatory mounting has a plurality of movable wedges through connecting shaft, upper cover is covered in the top of gear seat, and it is equipped with first mounting hole on it, connecting bolt passes first mounting hole and second mounting hole on mounting bracket in proper order, and is screwed in the screw hole in the top of inner bushing. The utility model has solved the problem that the existing one -way device is prone to meshing failure and poor reliability under high speed or vibration working condition.

Description

Technical Field

[0001] This utility model relates to the field of automotive starting system technology, specifically a novel wedge-type automotive one-way valve. Background Technology

[0002] In automotive starting systems, the one-way valve, as a key transmission component, is primarily used to achieve unidirectional power transmission between the starter motor and the engine flywheel. Its core function is to reliably transmit the starter motor torque to the flywheel during engine startup, and automatically cut off the reverse power transmission after the engine has successfully ignited and is running on its own, preventing the high-speed rotating flywheel from dragging the starter motor and causing damage. Traditional one-way valves are widely used in various internal combustion engine vehicles and are of great significance for ensuring starting safety, extending motor life, and improving transmission efficiency.

[0003] In existing technologies, common automotive one-way clutches mostly employ roller-type or spring-compression structures to achieve one-way locking. These structures typically rely on the friction between the rollers and the inner and outer rings, or the spring preload, to complete the engagement and disengagement actions. However, in actual operation, especially in high-speed, frequent start-stop, or high-vibration automotive environments, the rollers are prone to misalignment, jamming, or uneven wear, leading to delayed engagement response or locking failure. Simultaneously, the spring structure is prone to fatigue and relaxation after long-term use, making it difficult to maintain a stable preload, thus affecting the reliability of the self-locking mechanism. Furthermore, the overall assembly of these structures is complex, with numerous parts, requiring high manufacturing precision and assembly processes, which not only increases production costs but also reduces product consistency and ease of maintenance.

[0004] Therefore, there is an urgent need to propose a new type of wedge-shaped automotive one-way valve to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide a novel wedge-type automotive one-way valve, which has the advantages of compact structure, rapid response and reliable locking, and solves the problems of poor reliability and engagement failure of existing one-way valves under high speed or vibration conditions.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a novel wedge-type automotive one-way valve, comprising a gear seat, an upper cover, connecting bolts, a mounting bracket, movable wedges, and an inner bushing, characterized in that: the gear seat has an outer ring structure, its inner wall is provided with a slanted groove, and its inner bottom is provided with an installation space for accommodating the inner bushing; the inner bushing passes through the inner bottom of the gear seat and forms a rotatable fit with the gear seat, and a screw hole is provided on the top of the inner bushing; the mounting bracket is located inside the gear seat and positioned above the inner bushing, and multiple movable wedges are rotatably mounted on its outer side via a connecting shaft; the upper cover covers the top of the gear seat and has a first mounting hole thereon; the connecting bolt passes sequentially through the first mounting hole and the second mounting hole on the mounting bracket, and is threaded into the screw hole on the top of the inner bushing, so as to fix the upper cover, the mounting bracket, and the inner bushing into a single unit.

[0007] Preferably, the movable wedge is an arc-shaped metal block with an inclined surface, and there are three of them, which are evenly distributed along the outer circumference of the mounting frame.

[0008] In the design, the movable wedge adopts an arc-shaped metal block structure with an inclined surface, and three of them are evenly distributed around the outer circumference of the mounting frame. This enables synchronous and stable meshing with the inclined groove on the inner wall of the gear seat under the action of centrifugal force, and has the advantages of good meshing response consistency and uniform force distribution.

[0009] Preferably, the mounting frame has multiple connecting shafts on its outer side, and each movable wedge is rotatably connected to the mounting frame through a corresponding connecting shaft.

[0010] In the design, multiple connecting shafts are provided on the outside of the mounting frame. Each movable wedge is rotatably connected to the mounting frame through its corresponding connecting shaft, which realizes the free swing and reliable reset of the movable wedge in the radial direction, and has the advantages of flexible movement and stable structure.

[0011] Preferably, the inner side of the inner bushing is used to pass through the drive shaft, and the inner bushing and the drive shaft are connected by a flat key.

[0012] In the design, the inner side of the inner bushing is used to pass through the drive shaft, and the inner bushing and the drive shaft are connected by a flat key, which realizes synchronous rotation and reliable torque transmission between the drive shaft and the inner bushing, and has the advantages of strong connection and high transmission accuracy.

[0013] Preferably, the inclined groove is arranged circumferentially along the inner wall of the gear seat, and its inclination direction is consistent with the forward rotation direction of the transmission shaft, so as to cooperate with the movable wedge under the action of centrifugal force to achieve one-way locking.

[0014] In the design, the inclined groove is set circumferentially along the inner wall of the gear seat, and its inclination direction is consistent with the forward rotation direction of the transmission shaft. It is used to cooperate with the movable wedge under the action of centrifugal force to achieve one-way locking. It realizes the function of reliable self-locking when rotating forward and timely disengagement when rotating in reverse, and has the advantages of clear one-way transmission logic and reliable operation.

[0015] Preferably, the top of the mounting bracket fits against the upper cover, the bottom contacts the inner liner, and the mounting bracket is provided with a second mounting hole corresponding to the connecting bolt.

[0016] In the design, the top of the mounting bracket fits snugly against the upper cover, and the bottom contacts the inner bushing. The mounting bracket is also equipped with a second mounting hole corresponding to the connecting bolt, which realizes accurate axial positioning and clamping fixation of the mounting bracket, and has the advantages of high assembly precision and strong operational stability.

[0017] Preferably, the upper cover, mounting bracket and inner liner are connected by connecting bolts to form a detachable assembly.

[0018] In the design, the upper cover, mounting bracket and inner bushing are connected by connecting bolts to form a modular assembly that can be disassembled as a whole, realizing the modular integration of the core transmission components and providing structural advantages for easy assembly, maintenance and replacement.

[0019] Compared with the prior art, the beneficial effects of this utility model are as follows: This invention provides a stable meshing foundation for unidirectional transmission by setting an inclined groove on the inner wall of the gear seat and cooperating with an inner bushing that can rotate relative to it. When the drive shaft drives the inner bushing to rotate, the mounting bracket installed above the inner bushing rotates synchronously. The movable wedge block, which is rotatably connected to the outer side of the mounting bracket via a connecting shaft, slides outward under the action of centrifugal force and embeds itself in the inclined groove, realizing forward power transmission. When rotating in the opposite direction or stopping, the movable wedge block automatically disengages, cutting off the return path. This locking mechanism does not rely on spring preload or roller friction, avoiding the risk of failure caused by spring fatigue, roller jamming, or uneven wear. At the same time, the upper cover, mounting bracket, and inner bushing are fixed together by connecting bolts to form a compact and rigid modular structure, effectively suppressing component loosening or displacement under vibration. Therefore, this invention can maintain rapid response and reliable locking under high speed or strong vibration conditions, achieving a comprehensive effect of compact structure, rapid response, and reliable locking, solving the problems of meshing failure and poor reliability of existing one-way devices under complex operating conditions. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the main structure of this utility model; Figure 2 This is a front view cross-sectional structural diagram of the present invention; Figure 3 This is a schematic diagram of the gear seat structure of this utility model; Figure 4 This is a schematic diagram of the internal disassembled structure of this utility model; Figure 5 This is a top view schematic diagram of the connection structure between the mounting bracket and the wedge block of this utility model.

[0021] In the diagram: 1. Gear seat; 11. Inclined groove; 2. Upper cover; 21. First mounting hole; 3. Connecting bolt; 4. Mounting bracket; 41. Second mounting hole; 42. Connecting shaft; 5. Movable wedge; 6. Inner bushing; 61. Screw hole. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Example: Figures 1 to 5 As shown, one embodiment of this utility model is a wedge-type automotive one-way valve, comprising a gear seat 1, an upper cover 2, a connecting bolt 3, a mounting bracket 4, a movable wedge 5, and an inner bushing 6.

[0024] The gear seat 1 has an outer ring structure, and its inner bottom has an installation space for accommodating the inner bushing 6. The inner bushing 6 passes through the inner bottom of the gear seat 1 and forms a rotatable fit with the gear seat 1. The top of the inner bushing 6 has a threaded hole 61 for threaded connection with the connecting bolt 3.

[0025] The inner wall of the gear seat 1 is also provided with inclined grooves 11. The inclined grooves 11 are evenly distributed along the circumference, and their inclination direction is consistent with the forward rotation direction of the transmission shaft. These inclined grooves 11 provide an embedding position for the movable wedge 5 to ensure that when the transmission shaft rotates in the forward direction and the speed reaches the set threshold, the movable wedge 5 can slide radially outward under the action of centrifugal force and its inclined surface fits against the corresponding inclined surface of the inclined groove 11, thereby driving the gear seat 1 to rotate in the same direction.

[0026] The upper cover 2 is installed on the top of the gear seat 1, and has a first mounting hole 21 for the connecting bolt 3 to pass through. The bottom of the connecting bolt 3 passes through the first mounting hole 21 on the upper cover 2 and the second mounting hole 41 on the mounting bracket 4 in sequence, and is threaded into the screw hole 61 on the top of the inner bushing 6, thereby fixing the upper cover 2, the mounting bracket 4 and the inner bushing 6 into a whole structure.

[0027] The mounting bracket 4 is located between the upper cover 2 and the inner liner 6. Three movable wedges 5 are rotatably mounted on its outer side in a circular array via a connecting shaft 42. Each movable wedge 5 is an arc-shaped metal block with an inclined surface, capable of sliding radially outward along the mounting bracket 4 under centrifugal force and engaging in the inclined groove 11 on the inner wall of the gear seat 1, thus transmitting power. Each movable wedge 5 forms a rotating pair with the mounting bracket 4 via an independent connecting shaft 42, allowing it to naturally return to its original position when no centrifugal force is applied.

[0028] The top of the mounting bracket 4 fits against the upper cover 2, and its bottom contacts the inner bushing 6. The mounting bracket 4 is provided with a second mounting hole 41 for engaging with the connecting bolt 3 to achieve axial compression and positioning of the overall structure.

[0029] The movable wedge 5 is movably connected to the mounting bracket 4 via the connecting shaft 42, allowing it to swing freely under centrifugal force. When the drive shaft drives the inner bushing 6 to rotate, as the rotational speed increases, the movable wedge 5 is pushed outward along the connecting shaft 42 by centrifugal force, and then contacts the inclined groove 11 on the inner wall of the gear seat 1 and generates a self-locking effect, thereby driving the gear seat 1 to rotate in the same direction.

[0030] The inner bushing 6 is located inside the gear seat 1, and its inner side is used to pass through the drive shaft. The drive shaft is connected to the inner bushing 6 via a flat key, allowing the two to rotate synchronously. When the drive shaft rotates in the forward direction, the inner bushing 6 drives the mounting bracket 4 and the movable wedge 5 to rotate together. Under the action of centrifugal force, the movable wedge 5 expands outward and engages with the inclined groove 11 on the inner wall of the gear seat 1, realizing power transmission. When the drive shaft stops or rotates in the reverse direction, the movable wedge 5 is no longer subjected to centrifugal force and retracts under its own weight or a slight restoring force, disengaging from the inclined groove 11, allowing the gear seat 1 to rotate independently without driving the drive shaft, thus realizing the unidirectional transmission function.

[0031] Working principle and usage process: In actual use, the drive shaft passes through the inside of the inner bushing 6 and is connected to the inner bushing 6 via a flat key, allowing the drive shaft and the inner bushing 6 to rotate synchronously. When the drive shaft starts to rotate in the forward direction and the speed reaches a certain value, the inner bushing 6 rotates accordingly, causing the mounting bracket 4 and the movable wedge 5 to rotate together. At this time, the movable wedge 5 slides outward along the connecting shaft 42 under the action of centrifugal force, and its inclined surface engages with the inclined groove 11 on the inner wall of the gear seat 1, forming a mechanical self-locking mechanism, thereby driving the gear seat 1 to rotate synchronously and realizing power transmission.

[0032] When the drive shaft stops rotating or rotates in the reverse direction, the movable wedge 5 retracts under its own gravity due to the disappearance or change of direction of centrifugal force, and disengages from the inclined groove 11 on the inner wall of the gear seat 1. At this time, the gear seat 1 can rotate independently without affecting the drive shaft, thus avoiding interference of reverse torque on the transmission system.

[0033] Furthermore, the upper cover 2, mounting bracket 4, and inner bushing 6 are securely connected by connecting bolts 3, ensuring the structural stability of the entire device under high-speed operation. Simultaneously, the first mounting hole 21 on the upper cover 2 aligns with the second mounting hole 41 on the mounting bracket 4, facilitating assembly and disassembly and improving maintenance efficiency. This structure eliminates the need for spring preload or roller friction pairs, fundamentally avoiding reliability issues caused by roller misalignment, jamming, uneven wear, or spring fatigue in traditional one-way valves, thus meeting the operational requirements of automotive starting systems under harsh conditions such as high speed and strong vibration.

[0034] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A novel wedge-type automotive one-way valve, comprising a gear seat (1), an upper cover (2), connecting bolts (3), a mounting bracket (4), a movable wedge (5), and an inner bushing (6), characterized in that: The gear seat (1) has an outer ring structure, and its inner wall is provided with a slanted groove (11). The inner bottom is provided with an installation space for accommodating the inner bushing (6). The inner bushing (6) passes through the inner bottom of the gear seat (1) and forms a relative rotatable fit with the gear seat (1). The top of the inner bushing (6) is provided with a screw hole (61). The mounting bracket (4) is located inside the gear seat (1) and placed above the inner bushing (6). Multiple movable wedges (5) are rotatably installed on its outer side through a connecting shaft (42). The upper cover (2) covers the top of the gear seat (1) and is provided with a first mounting hole (21). The connecting bolt (3) passes through the first mounting hole (21) and the second mounting hole (41) on the mounting bracket (4) in sequence, and is threaded into the screw hole (61) on the top of the inner bushing (6) to fix the upper cover (2), the mounting bracket (4) and the inner bushing (6) into a whole.

2. The novel wedge-type automotive one-way valve according to claim 1, characterized in that, The movable wedge (5) is an arc-shaped metal block with a sloping surface, and there are three of them, which are evenly distributed around the outer circumference of the mounting frame (4).

3. The novel wedge-type automotive one-way valve according to claim 1, characterized in that, The mounting frame (4) has multiple connecting shafts (42) on its outer side, and each movable wedge (5) is rotatably connected to the mounting frame (4) through the corresponding connecting shaft (42).

4. The novel wedge-type automotive one-way valve according to claim 1, characterized in that, The inner side of the inner bushing (6) is used to pass through the drive shaft, and the inner bushing (6) and the drive shaft are connected by a flat key.

5. The novel wedge-type automotive one-way valve according to claim 1, characterized in that, The inclined groove (11) is arranged circumferentially along the inner wall of the gear seat (1), and its inclination direction is consistent with the forward rotation direction of the transmission shaft. It is used to cooperate with the movable wedge (5) under the action of centrifugal force to achieve one-way locking.

6. The novel wedge-type automotive one-way valve according to claim 1, characterized in that, The top of the mounting bracket (4) is fitted with the upper cover (2), the bottom is in contact with the inner liner (6), and the mounting bracket (4) is provided with a second mounting hole (41) corresponding to the connecting bolt (3).

7. The novel wedge-type automotive one-way valve according to claim 1, characterized in that, The upper cover (2), mounting bracket (4) and inner liner (6) are connected by connecting bolts (3) to form a detachable assembly.

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