Antiskid chain tightener

Abstract

The utility model belongs to the technical field of automobile accessories, and particularly relates to an antiskid chain tightener. Comprising a tightener main rod, a tightening sleeve connected to the tightener main rod in a sliding mode and a handheld adjusting rod rotationally connected with the tightening sleeve. A straight tooth part is arranged on the outer wall of the side, close to the handheld adjusting rod, of the tightener main rod, and the straight tooth part is arranged in the length direction of the tightener main rod. The end, connected with the tightening sleeve, of the handheld adjusting rod is provided with a semi-arc tooth part, and the semi-arc tooth part is meshed with the straight tooth part. A fixed arm is arranged at one end of the tightener main rod, the other end of the tightener main rod is a free end, and a movable arm opposite to the fixed arm is arranged on the tightening sleeve; in the application, the adjusting rod is held by hand to drive the tightening sleeve to slide on the tightener main rod, so that the movable arm is close to the fixed arm to tighten the antiskid chain; the whole structure is relatively simple, tightening of the antiskid chain can be achieved in a labor-saving mode, and practicability is high.

Description

Technical Field

[0001] This utility model belongs to the field of automotive parts technology, specifically relating to an anti-skid chain tensioner. Background Technology

[0002] In scenarios such as icy roads, muddy roads, mountain roads, and steep slopes, vehicles need to install snow chains on their tires to increase friction between the tires and the road surface, preventing skidding and fishtailing, ensuring driving safety, and enabling the vehicle to start, get out of trouble, drive, and brake smoothly. Installing snow chains on tires requires considerable effort to put them on and tighten. Especially in cold weather or harsh environments, this makes the operation very difficult for drivers, increasing installation time and physical labor costs; the installation process is laborious and time-consuming.

[0003] The prior art provides an anti-skid chain tensioner (publication number: CN11180617A), including a housing and a power component, a tensioning component, and a locking component disposed within the housing; the power component includes: a power shaft, a ratchet, and a drive gear; the power shaft is rotatably mounted on the housing; the ratchet and the drive gear are fixedly mounted on the power shaft; the tensioning component includes: a driven shaft, a driven gear, a take-up reel, and a steel wire; the driven shaft is rotatably mounted on the housing; the driven gear and the take-up reel are fixedly mounted on the driven shaft; The driven gear meshes rotatably with the driving gear; the rear end of the wire is fixedly placed on the take-up reel and wound around the take-up reel; and the front end of the wire passes through the housing and extends to the outside of the housing; the locking assembly includes: an adjusting screw, a telescopic rod, and a pawl; the adjusting screw is rotatably placed on the housing; the telescopic rod is slidably placed on the housing, and the front end of the telescopic rod is rotatably placed inside the adjusting screw; the pawl is hinged to the rear end of the telescopic rod, and the pawl engages with the ratchet.

[0004] However, the existing anti-skid chain tensioner has the problem of high cost due to its complex overall structure and numerous parts, and further improvement is necessary. Utility Model Content

[0005] The purpose of this invention is to provide an anti-skid chain tensioner to solve the problem of high cost caused by complex overall structure and numerous parts in existing anti-skid chain tensioners.

[0006] To achieve the above-mentioned technical objectives, the technical solution adopted by this utility model is as follows:

[0007] A chain tensioner includes a tensioner main rod, a tensioning sleeve slidably connected to the tensioner main rod, and a handheld adjusting rod rotatably connected to the tensioning sleeve. The outer wall of the tensioner main rod near the handheld adjusting rod has a straight toothed portion, which is arranged along the length of the tensioner main rod. One end of the handheld adjusting rod connected to the tensioning sleeve has a semi-circular toothed portion that meshes with the straight toothed portion. One end of the tensioner main rod has a fixed arm, and the other end is a free end. The tensioning sleeve has a movable arm opposite to the fixed arm. When the handheld adjusting rod is rotated under force, the meshing of the semi-circular toothed portion and the straight toothed portion causes the movable arm to move closer to the fixed arm, thereby tightening the chain.

[0008] In this invention, because the semi-arc toothed part and the straight toothed part mesh, the tightening sleeve can be slid on the main rod of the tightener by manually applying force to the hand adjustment rod, thereby driving the movable arm to move closer to the fixed arm and tightening the anti-skid chain. The overall structure of this anti-skid chain tightener is relatively simple compared to manual operation. In this process, it can reduce the labor intensity of manual labor and improve the tightening efficiency of the anti-skid chain. Moreover, it is simpler in structure than existing anti-skid chain tighteners, has high practicality, and is low in cost for widespread deployment.

[0009] Furthermore, a connecting shell is provided on the outer wall of the tightening sleeve away from the movable arm, and a rotating hole is provided in the connecting shell. The handheld adjustment rod is rotatably connected to the rotating hole through a rotating shaft.

[0010] Furthermore, a notch is provided in the middle of the outer wall of the tightening sleeve on the side away from the movable arm, and the semi-arc toothed part passes through the notch and meshes with the straight toothed part.

[0011] Furthermore, the tightening sleeve is connected to a locking spring that bends toward the hand-held adjusting rod. Under the downward pressure of the hand-held adjusting rod, the locking spring can extend into the notch and engage with the straight toothed portion to lock the tightening sleeve.

[0012] When the hand-held adjusting rod is pressed down to the position, the locking spring is pressed down by the hand-held adjusting rod and engages with the straight tooth part, which can prevent the tightening sleeve from moving back and improve the tightening effect.

[0013] Furthermore, the straight toothed portion is a ratchet rack, and the locking spring acts as a pawl that engages with the ratchet rack.

[0014] Furthermore, a connecting shaft is installed on the fixed arm, and an extension rod is connected to the connecting shaft. The extension rod has a tightening hole, which cooperates with the movable arm to realize the docking of the buckle and hook in the anti-slip chain.

[0015] This structural design improves the adaptability of the anti-skid chain tensioner in more scenarios, making it highly practical.

[0016] Furthermore, a recessed locking groove is provided on the wall surface opposite to the movable arm.

[0017] Furthermore, a plug is installed at the free end of the main rod of the tightener; and an anti-slip sleeve is fitted on the handheld adjustment rod.

[0018] The utility model adopting the above technical solution has the following advantages compared with the prior art:

[0019] This utility model provides an anti-skid chain tightener. A handheld adjusting rod drives a tightening sleeve to slide on the main rod of the tightener. The engagement of the semi-circular teeth and straight teeth causes the movable arm to approach the fixed arm, tightening the anti-skid chain. The overall structure is relatively simple, achieving anti-skid chain tightening with relatively little effort, and is highly practical. During this process, the rotation of the handheld adjusting rod, driven by a lever principle, rotates the semi-circular teeth, reducing manual labor intensity and improving the tightening efficiency of the anti-skid chain. Furthermore, the materials used for the handheld adjusting rod and tightening sleeve are relatively conventional, and the connection between the semi-circular teeth and straight teeth is relatively convenient, resulting in a simple overall structure, high practicality, and low configuration cost for the anti-skid chain tightener. Attached Figure Description

[0020] This utility model can be further illustrated by the non-limiting embodiments given in the accompanying drawings;

[0021] Figure 1 This is one of the structural schematic diagrams of an embodiment of the anti-skid chain tightener of this utility model;

[0022] Figure 2 This is a second structural schematic diagram of an embodiment of the anti-skid chain tightener of this utility model;

[0023] Figure 3 This is a front view of an embodiment of the anti-skid chain tightener of this utility model;

[0024] Figure 4 This is a side view of an embodiment of the anti-skid chain tightener of this utility model;

[0025] Figure 5 for Figure 4 Sectional view along the middle AA direction;

[0026] Figure 6 This is a front view of another embodiment of the anti-skid chain tightener of this utility model;

[0027] The symbols for the main components are explained below:

[0028] 101. Tensioner main rod; 102. Tensioning sleeve; 103. Movable arm; 104. Fixed arm; 105. Connecting shell; 106. Semi-arc toothed part; 107. Hand-held adjustment rod; 108. Straight toothed part; 109. Locking spring; 110. Connecting side plate; 111. Locking groove; 112. Notch; 113. Connecting shaft; 114. Extension rod. Detailed Implementation

[0029] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that similar or identical parts are referred to by the same reference numerals in the drawings or description. Implementations not shown or described in the drawings are forms known to those skilled in the art. Furthermore, directional terms mentioned in the embodiments, such as "up," "down," "top," "bottom," "left," "right," "front," and "back," are only for reference to the directions in the drawings and are not intended to limit the scope of protection of the present invention.

[0030] like Figures 1-5As shown, an embodiment of the present invention provides an anti-slip chain tightener, comprising a tightener main rod 101, a tightening sleeve 102 slidably connected to the tightener main rod 101, and a handheld adjusting rod 107 rotatably connected to the tightening sleeve 102; a straight tooth portion 108 is provided on the outer wall of the tightener main rod 101 near the handheld adjusting rod 107, the straight tooth portion 108 may be a ratchet, and the straight tooth portion 108 is arranged along the length direction of the tightener main rod 101; a semi-circular tooth portion 106 is provided at one end of the handheld adjusting rod 107 connected to the tightening sleeve 102, the semi-circular tooth portion 106 meshing with the straight tooth portion 108; the tightener main rod 107... One end of the rod 101 is provided with a fixed arm 104, and the other end of the main rod 101 of the tightener is a free end. The tightening sleeve 102 is provided with a movable arm 103 opposite to the fixed arm 104. The manual hand holds the free end and the end of the hand adjustment rod 107 to apply force. Before applying force, the tightening sleeve 102 can be slid to lock the connecting chain of the anti-skid chain that needs to be tightened onto the fixed arm 104 and the movable arm 103, so that the anti-skid chain is in a state to be tightened. When the hand adjustment rod 107 is rotated under force, the engagement of the semi-arc tooth part 106 and the straight tooth part 108 drives the movable arm 103 to approach the fixed arm 104 to tighten the anti-skid chain. The engagement between the semi-circular toothed part 106 and the straight toothed part 108 can be configured as follows: the straight toothed part 108 is a ratchet rack, which is fixedly installed on the outer wall of the main rod 101 of the tensioner near the hand-held adjusting rod 107. During rotation, the semi-circular toothed part 106 engages with the ratchet rack. Since the ratchet rack is stationary, driven by the reaction force, the semi-circular toothed part 106 and its associated tensioning sleeve 102 will move, thereby moving the movable arm 103. This anti-skid chain tensioner has a relatively simple overall structure. Compared to manual anti-skid chain tensioning, it reduces labor intensity and improves tensioning efficiency. Furthermore, it is simpler in structure than existing anti-skid chain tensioners, offering high practicality and low configuration costs.

[0031] For example, a notch 112 may be provided in the middle of the outer wall of the tightening sleeve 102 on the side away from the movable arm 103, and the semi-circular tooth 106 passes through the notch 112 and engages with the straight tooth 108.

[0032] For example, the outer wall of the tightening sleeve 102 on the side away from the movable arm 103 is provided as a complete opening, and the side wall of the tightening sleeve 102 extends upward for rotational connection with the hand-held adjustment rod 107; the semi-circular toothed portion 106 passes through the opening and engages with the straight toothed portion 108.

[0033] For example, the semi-circular tooth 106 can be selected as a quarter gear, which meshes with a ratchet rack. The gear can be welded to the end of the hand-held adjustment lever 107; in practice, a rotating hole can be machined on the hand-held adjustment lever 107, and a rotating shaft can be connected to the rotating hole, which serves as the rotation center of the gear and also as a component connected to the tightening sleeve 102. This design is simple and highly practical.

[0034] like Figure 4 , Figure 5 As shown, in this embodiment, a connecting shell 105 is provided on the outer wall of the tightening sleeve 102 away from the movable arm 103. A rotating hole is provided in the connecting shell 105, and the hand-held adjustment rod 107 is rotatably connected to the rotating hole through a rotating shaft.

[0035] For example, the connecting shell 105 is composed of connecting side plates 110 on the front and rear sides of the top of the tightening sleeve 102, and a space is formed between the connecting side plates 110, in which components such as the semi-circular toothed part 106 are installed.

[0036] For example, a hollow area is provided on the connecting side plate 110, through which the rotation of the semi-circular tooth 106 can be observed intuitively.

[0037] like Figure 5 As shown, in this embodiment, the tightening sleeve 102 is connected to a locking spring 109 that bends towards the hand-held adjusting rod 107. Under the downward pressure of the hand-held adjusting rod 107, the locking spring 109 can extend into the notch 112 and engage with the tooth groove of the straight tooth portion 108 to lock the tightening sleeve 102. When the hand-held adjusting rod 107 is not pressed down, the end of the locking spring 109 is suspended in the air under its own elastic force and does not contact other parts; when the hand-held adjusting rod 107 is pressed down to a certain position, the wall surface of the hand-held adjusting rod 107 or the wall surface of the semi-circular tooth portion 106 begins to abut against the locking spring 109, and when pressed down further, the locking spring 109 is pressed down, so that the locking spring 109 extends into the notch 112 and engages with the straight tooth portion 108. This structural design achieves the effect of locking the tightening sleeve 102. When the hand adjustment rod 107 is pressed down to the position, the locking spring 109 is pressed down by the hand adjustment rod 107 and engages with the straight tooth part 108, which can prevent the tightening sleeve 102 from moving back and improve the tightening effect. In addition, the straight tooth part 108 can also provide power transmission for the semi-arc tooth part 106. Although the straight tooth part 108 has a simple structure, it has many functions.

[0038] For example, a locking slot can be provided on the wall of the semi-circular toothed portion 106. When the hand-held adjustment rod 107 is pressed down to the position, the locking spring 109 extends into the locking slot to limit the semi-circular toothed portion 106 and prevent the hand-held adjustment rod 107 from reversing. Pressing the hand-held adjustment rod 107 down a certain amount will release the lock. Generally, the straight toothed portion 108 is selected as a ratchet rack, and the locking spring 109 acts as a pawl to cooperate with the ratchet rack. In this way, it has both the function of power transmission and the function of locking the semi-circular toothed portion 106 to prevent the hand-held adjustment rod 107 from reversing.

[0039] like Figure 5As shown, in this embodiment, a recessed locking groove 111 is provided on the wall surface opposite to the movable arm 103. The locking groove 111 is semi-circular; it can connect and limit the connecting chain of the anti-slip chain and prevent it from coming off, which is highly practical. In addition, the oppositely arranged locking groove 111 can make the movable stroke of the connecting chain larger when tightened.

[0040] like Figure 6 As shown, in this embodiment, a connecting shaft 113 is installed on the fixed arm 104, and the connecting shaft 113 is connected to an extension rod 114. The extension rod 114 has a tightening hole, which cooperates with the movable arm 103 to achieve the engagement of the buckle and hook in the anti-slip chain. The buckle is a ring, and the hook is a hook with a semi-locking mechanism. This structural design eliminates the need for an additional buckle when tightening the anti-slip chain, allowing for direct locking during tightening, resulting in higher efficiency. Furthermore, when the anti-slip chain is not in use, the tightening hole allows it to be hung on a wall nail for convenient storage. This also improves the adaptability of the anti-slip chain tightener in more scenarios, making it highly practical.

[0041] For example, a plug is installed at the free end of the main rod 101 of the tensioner; the plug can prevent the tension sleeve 102 from coming off; an anti-slip sleeve is provided on the hand adjustment rod 107 to improve the grip comfort of the hand adjustment rod 107 and make it highly practical.

[0042] This embodiment provides an anti-skid chain tensioner. A straight toothed portion 108 is provided on the main rod 101 of the tensioner, and a semi-circular toothed portion 106 is provided at the end of the handheld adjusting rod 107. The movable arm 103 and the fixed arm 104 engage the end of the anti-skid chain to be tightened. When the handheld adjusting rod 107 is manually pressed down, the engagement of the semi-circular toothed portion 106 and the straight toothed portion 108 causes the movable arm 103 on the tightening sleeve 102 to approach the fixed arm 104 at the end of the main rod 101, thus tightening the anti-skid chain. The ends of the strips are joined together and fixed with buckles to tighten the anti-skid chain. The overall structure is relatively simple, and the anti-skid chain can be tightened with relatively little effort, making it highly practical. During this process, the rotation of the hand-held adjusting rod 107 drives the semi-arc toothed part 106 to rotate through the lever principle, which can reduce the intensity of manual labor and improve the tightening efficiency of the anti-skid chain. In addition, the hand-held adjusting rod 107 and the tightening sleeve 102 are made of a wide range of materials, which makes the overall structure of the anti-skid chain tightener relatively simple, highly practical, and low in configuration cost.

[0043] The above provides a detailed description of the anti-skid chain tightener provided by this utility model. The specific embodiments are described only to aid in understanding the method and core concept of this utility model. It should be noted that those skilled in the art can make various improvements and modifications to this utility model without departing from its principles, and these improvements and modifications also fall within the protection scope of the claims of this utility model.

Claims

1. An antiskid chain tightener, comprising a tightener main rod, a tightener sleeve slidingly connected to the tightener main rod, and a hand-held adjusting rod rotationally connected to the tightener sleeve; characterized in that, The straight tooth part is arranged on one side of the tightening main rod close to the handheld adjusting rod, and is arranged along the length direction of the tightening main rod; the half-arc tooth part is arranged on one end of the handheld adjusting rod connected with the tightening sleeve, and is engaged with the straight tooth part; one end of the tightening main rod is provided with a fixed arm, and the other end of the tightening main rod is a free end; the tightening sleeve is provided with a movable arm opposite to the fixed arm; when the handheld adjusting rod is rotated under force, the movable arm is driven to be close to the fixed arm through the engagement of the half-arc tooth part and the straight tooth part, so as to tighten the antiskid chain.

2. The antiskid chain tightener according to claim 1, characterized by, The connecting shell is arranged on the outer wall of the tightening sleeve away from the movable arm, and the rotating hole is arranged in the connecting shell.

3. The antiskid chain tightener according to claim 1, wherein The half-arc tooth part is engaged with the straight tooth part through the gap.

4. The antiskid chain tightener according to claim 3, wherein The tightening sleeve is connected with the clamping spring bent towards the handheld adjusting rod, and the clamping spring can be inserted into the gap and clamped with the straight tooth part under the pressing action of the handheld adjusting rod, so as to lock the tightening sleeve.

5. The antiskid chain tightener according to claim 4, wherein The straight tooth part is a ratchet strip, and the clamping spring is matched with the ratchet strip as a pawl.

6. The antiskid chain tightener according to claim 1, wherein The connecting shaft is arranged on the fixed arm, the expansion rod is connected with the connecting shaft, the tightening hole is arranged on the expansion rod, and the tightening hole is matched with the movable arm to realize the butt joint of the clasp buckle and the clasp hook in the antiskid chain.

7. The antiskid chain tightener according to claim 1, wherein The fixed arm and the movable arm are provided with the concave clamping groove on the opposite wall surface.

8. The antiskid chain tightener according to claim 1, wherein The free end of the tightening main rod is provided with a plug, and the handheld adjusting rod is provided with an antiskid sleeve. The free end of the tightening main rod is provided with a plug, and the handheld adjusting rod is provided with an antiskid sleeve.

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