CN114198467A

CN114198467A - Automatic tensioner applied to automobile

Info

Publication number: CN114198467A
Application number: CN202111561400.6A
Authority: CN
Inventors: 王文焕
Original assignee: Alt Jiangsu Industrial Co ltd
Current assignee: Alt Jiangsu Industrial Co ltd
Priority date: 2021-12-20
Filing date: 2021-12-20
Publication date: 2022-03-18

Abstract

The application provides an automatic tensioner applied to an automobile, which comprises a fixed frame, a sliding seat, a cylindrical spring, a roller and a rotating shaft; the roller is rotationally connected with the rotating shaft, and the rotating shaft is connected with the fixed frame in a sliding way; the sliding seat is connected with the fixed frame in a sliding manner along a linear direction, the rotating shaft is vertical to the sliding direction of the sliding seat relative to the fixed frame, and the sliding direction of the rotating shaft box relative to the fixed frame is parallel to the sliding direction of the sliding seat relative to the fixed frame; the central axis of the cylindrical spring is parallel to the sliding direction of the sliding seat relative to the fixed frame, one end of the cylindrical spring is connected with the sliding seat, the other end of the cylindrical spring is connected with the fixed frame, and the cylindrical spring is in a tensioning state; the rotating shaft, the sliding seat and the cylindrical spring are arranged along the direction parallel to the central axis of the spring, the sliding seat is positioned between the cylindrical spring and the rotating shaft, and the sliding seat is abutted to the rotating shaft along the direction parallel to the central axis of the cylindrical spring. The problem of among the prior art overspeed device tensioner occupation space big, it is unstable to tensile force adjustment is solved.

Description

Automatic tensioner applied to automobile

Technical Field

The application relates to a tight pulley technical field that rises especially relates to an automatic tensioning ware of being applied to car.

Background

The tensioning mechanism in the prior art generally comprises a torsion spring, a roller and a connecting rod, wherein one end of the connecting rod is rotatably connected with a vehicle body of the vehicle, the other end of the connecting rod is rotatably connected with the roller, the circumferential surface of the roller is abutted against the belt, one end of the torsion spring is connected with the vehicle body of the vehicle, the other end of the torsion spring is connected with the connecting rod, the belt pushes the roller to enable the torsion spring to be in a tensioning state, and when the belt is loosened, the torsion spring gradually releases elastic potential energy to push the roller to extrude the belt, so that sufficient pressure is kept between the roller and the belt, the loosening degree of the belt is weakened, and the purpose of automatically tensioning the belt is achieved.

The connecting rod has certain swing amplitude in the rotating process, and a moving space needs to be vacated for the swing of the connecting rod, so that the tensioning device in the prior art occupies a large space, the connecting rod swings to different angles, the tensioning force applied to the belt by the roller is different, and the adjustment of the tensioning force is not stable.

Disclosure of Invention

The application provides an automatic tensioning ware for be applied to car for it is big to solve among the prior art device occupation space, adjusts unstable problem to the tensile force.

In order to achieve the above purpose, the embodiments of the present application propose the following technical solutions:

an automatic tensioner applied to an automobile comprises a fixed frame, a sliding seat, a cylindrical spring, a roller and a rotating shaft;

the roller is rotationally connected with the rotating shaft, and the rotating shaft is slidably connected with the fixed frame;

the sliding seat is connected with the fixed frame in a sliding mode along a linear direction, the rotating shaft is perpendicular to the sliding direction of the sliding seat relative to the fixed frame, and the sliding direction of the rotating shaft box relative to the fixed frame is parallel to the sliding direction of the sliding seat relative to the fixed frame;

the central axis of the cylindrical spring is parallel to the sliding direction of the sliding seat relative to the fixed frame, one end of the cylindrical spring is connected with the sliding seat, the other end of the cylindrical spring is connected with the fixed frame, and the cylindrical spring is in a tensioning state;

the pivot the slide cylindrical spring along being on a parallel with the direction of spring axis is arranged, the slide is located cylindrical spring with between the pivot, the slide with the pivot along being on a parallel with the direction butt of cylindrical spring axis.

In some embodiments, the shape of the fixing frame is Contraband font, the fixing frame includes a first guide rod, a second guide rod, and a fixing block, the first guide rod is parallel to the second guide rod, one end of the first guide rod is fixedly connected to the fixing block, one end of the second guide rod is fixedly connected to the fixing block, the fixing block is located between the first guide rod and the second guide rod, the sliding seat is located between the first guide rod and the second guide rod, the sliding seats are respectively slidably connected to the first guide rod and the second guide rod, the sliding direction of the sliding seat relative to the first guide rod and the sliding direction of the sliding seat relative to the second guide rod are parallel, the sliding direction of the sliding seat relative to the first guide rod is parallel to the first guide rod, the cylindrical spring is positioned between the sliding seat and the fixed block, the central axis of the cylindrical spring is parallel to the first guide rod, one end of the cylindrical spring is abutted against the sliding seat along the direction parallel to the first guide rod, and the other end of the cylindrical spring is abutted against the fixed block along the direction parallel to the first guide rod; the pivot is located between first guide bar and the second guide bar, the gyro wheel is located first guide bar with between the second guide bar, wherein one end of pivot with first guide bar sliding connection, the other end of pivot with second guide bar sliding connection.

In some embodiments, the slide seat is shaped like Contraband, the slide seat includes a first ejector rod, a second ejector rod, and a fixing plate, the first ejector rod is parallel to the second ejector rod, the fixing plate is located between the first ejector rod and the second ejector rod, one end of the first ejector rod is fixedly connected to the fixing plate, the second ejector rod is fixedly connected to the fixing plate, the cylindrical spring is located between the fixing plate and the fixing block, one end of the cylindrical spring, far away from the fixing block, is abutted against the fixing plate, the roller is located between the first ejector rod and the second ejector rod, the fixing plate is located between the roller and the cylindrical spring, the first ejector rod and the second ejector rod are located on one side of the rotating shaft, near the cylindrical spring, one end of the first ejector rod, far away from the fixing plate, is abutted against one end of the rotating shaft, one end of the second pushing rod, which is far away from the fixed plate, is abutted against the other end of the rotating shaft; the first ejector rod is connected with the first guide rod in a sliding mode, and the second ejector rod is connected with the second guide rod in a sliding mode.

In some embodiments, a first guide groove is formed in a surface of the first guide rod close to the second guide rod, the first guide groove is arranged in a direction parallel to the first guide rod, a second guide groove is formed in a surface of the second guide rod close to the first guide rod, the second guide groove is arranged in a direction parallel to the second guide rod, the first ejector rod is located in the first guide groove, the first ejector rod is slidably connected with the first guide groove, the second ejector rod is located in the second guide groove, and the second ejector rod is slidably connected with the second guide groove; the fixed plate is close to the one side of first guide bar with first guide bar sliding connection, the fixed plate is close to the one side of second guide bar with second guide bar sliding connection.

In some embodiments, an anti-disengaging rod is fixedly connected to one surface of the fixing plate close to the fixing block, the anti-disengaging rod is parallel to the central axis of the cylindrical spring, and the anti-disengaging rod is inserted into one end of the cylindrical spring, which is far away from the fixing block.

In some embodiments, one surface of the fixing block, which is close to the fixing plate, is fixedly connected with an anti-disengaging sleeve, a central axis of the anti-disengaging sleeve is parallel to a central axis of the cylindrical spring, and one end of the cylindrical spring, which is far away from the fixing plate, is inserted into the anti-disengaging sleeve.

In some embodiments, the fixing block includes a first connecting block and a second connecting block, the first connecting block is integrally connected with the first guide rod, the second connecting block is integrally connected with the second guide rod, and the first connecting block and the second connecting block are detachably and fixedly connected; the anti-disengaging sleeve comprises a first sleeve and a second sleeve, the first sleeve is semi-cylindrical in shape, the second sleeve is semi-cylindrical in shape, the anti-disengaging sleeve is formed by the first sleeve and the second sleeve in an assembled mode, and one end of the fixing plate is far away from the cylindrical spring and is abutted to the first connecting block and the second connecting block respectively.

In some embodiments, the rotating shaft includes a first prism rod, a second prism rod and a cylindrical rod, the first prism rod, the second prism rod and the cylindrical rod are parallel, the cylindrical rod is located between the first prism rod and the second prism rod, two ends of the cylindrical rod are respectively and integrally connected with the first prism rod and the second prism rod, the cross section of the first prism rod is square, the cross section of the second prism rod is square, the side length of the cross section of the first prism rod is smaller than the diameter of the cylindrical rod, the side length of the cross section of the second prism rod is smaller than the diameter of the cylindrical rod, the central axes of the first prism rod, the central axes of the second prism rod are located on the same straight line, the first prism rod is located in the first guide groove, and the outer side surface of the first prism rod is slidably connected with the inner wall of the first guide groove, the second prism rod is positioned in the second guide groove, and the outer side surface of the second prism rod is in sliding connection with the inner wall of the second guide groove.

In some embodiments, the automatic tensioner for automobile application further comprises a first outer retainer ring, a first inner retainer ring, a second outer retainer ring, the first outer baffle ring is sleeved on the first prism rod, the first inner baffle ring is sleeved on the cylindrical rod, the first ejector rod is clamped between the first outer retaining ring and the first inner retaining ring, the diameter of the outer wall of the first outer retaining ring is larger than the width of the first guide groove, the diameter of the outer wall of the first inner baffle ring is larger than the width of the first guide groove, the second outer baffle ring is sleeved on the second prism rod, the second inner baffle ring is sleeved on the cylindrical rod, the second ejector rod is clamped between the second outer baffle ring and the second inner baffle ring, the diameter of the outer wall of the second outer baffle ring is larger than the width of the second guide groove, and the diameter of the outer wall of the second inner baffle ring is larger than the width of the second guide groove; the first outer baffle ring is tightly matched with the diameter of the first ejector rod, the first inner baffle ring is connected with the first ejector rod in a sliding mode, the second outer baffle ring is tightly matched with the second ejector rod, and the second outer baffle ring is connected with the second ejector rod in a sliding mode;

the automatic tensioner applied to the automobile further comprises an intermediate baffle ring, the roller comprises a roller, a first rolling bearing and a second rolling bearing, the first rolling bearing and the second rolling bearing are sleeved on the cylindrical rod, the first rolling bearing and the second rolling bearing are positioned between the first inner baffle ring and the second inner baffle ring, the intermediate baffle ring is sleeved on the cylindrical rod, the intermediate baffle ring is positioned between the first rolling bearing and the second rolling bearing, one end of an inner ring of the first rolling bearing is axially abutted with the first inner baffle ring, the other end of the inner ring of the first rolling bearing is axially abutted with the intermediate baffle ring, one end of the second rolling bearing is axially abutted with the second inner baffle ring, and the other end of the second rolling bearing is axially abutted with the intermediate baffle ring, the roller is characterized in that the first rolling bearing is located inside one end of the roller, the second rolling bearing is located inside the other end of the roller, the central axis of the roller and the central axis of the cylindrical rod are located on the same straight line, the outer side face of the outer ring of the first rolling bearing is tightly matched with the inner wall of the roller, and the outer side face of the outer ring of the second rolling bearing is tightly matched with the inner wall of the roller.

In some embodiments, the fixing block is provided with a splicing hole, the splicing hole penetrates through the first connecting rod and the second connecting rod along the arrangement direction of the first connecting rod and the second connecting rod, a splicing bolt is spliced in the splicing hole, and the first connecting block and the second connecting block are fixedly connected through the splicing bolt;

the first guide rod is provided with a first fixing hole, the second guide rod is provided with a second fixing hole, the first fixing hole is parallel to the second fixing hole, the first fixing hole and the second fixing hole are perpendicular to the splicing hole, the first fixing hole penetrates through the first guide rod, the second fixing hole penetrates through the second guide rod, a first fixing bolt is inserted into the first fixing hole, and a second fixing bolt is inserted into the second fixing hole;

be applied to automatic tensioning ware of car still includes fixing base and clamp plate, the mount is located the clamp plate with between the fixing base, first fixed orifices the second fixed orifices is located the clamp plate with between the fixing base, the clamp plate with pass through between the fixing base first fixing bolt fastening connection, the clamp plate with pass through between the fixing base second fixing bolt fastening connection, the clamp plate with the fixing base is located first guide bar is kept away from the one end of gyro wheel.

Has the advantages that:

the application provides an automatic tensioning ware for car, in the course of the work, the direction roof pressure belt of perpendicular to belt is followed to the periphery of gyro wheel, the pivot slides along the mount, slide compression cylinder spring, the flexible in-process of cylinder spring, the slide moves along the rectilinear direction, for overspeed device tensioner among the prior art, contained angle between gyro wheel and the belt can remain unchanged or the change volume is littleer, it is more steady to the tensile force change of belt automatic tensioning, and the required activity space of the flexible regulation tensile force of rectilinear direction is littleer for overspeed device tensioner among the prior art, it is big to have solved overspeed device tensioner occupation space among the prior art, adjust unstable problem to the tensile force.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative efforts.

Fig. 1 is a schematic structural view of an automatic tensioner applied to an automobile in an embodiment of the present application;

FIG. 2 is a schematic structural view of an automatic tensioner for an automobile according to an embodiment of the present application from another perspective;

FIG. 3 is an exploded view of an automatic tensioner as applied to an automobile in an embodiment of the present application;

FIG. 4 is an exploded view of the mount in the embodiment of the present application;

FIG. 5 is an exploded view of the spindle, carriage, and cylindrical spring of the embodiment of the present application;

FIG. 6 is an exploded view of the embodiment of the present application between the shaft and the roller;

FIG. 7 is an exploded view of the drum and shaft;

fig. 8 is a sectional view taken in the direction of a-a in fig. 1.

Reference numerals:

101. a fixed mount; 102. a slide base; 103. a cylindrical spring; 104. a roller; 105. a rotating shaft; 106. a first guide bar; 107. a second guide bar; 108. a fixed block; 109. a first ejector pin; 110. a second ejector pin; 111. a fixing plate; 112. a first guide groove; 113. a second guide groove; 114. an anti-drop rod; 115. an anti-drop sleeve; 116. a first connection block; 117. a second connecting block; 118. a first sleeve; 119. a second sleeve; 120. a first prismatic rod; 121. a second prismatic rod; 122. a cylindrical rod; 123. a first outer retainer ring; 124. a first inner retainer ring; 125. a second inner retainer ring; 126. a second outer retainer ring; 127. a middle baffle ring; 128. a roller; 129. a first rolling bearing; 130. a second rolling bearing; 131. splicing holes; 132. splicing the bolts; 133. a first fixing hole; 134. a second fixing hole; 135. a first fixing bolt; 136. a second fixing bolt; 137. a fixed seat; 138. and (7) pressing a plate.

Detailed Description

Embodiments of the present application will be described in further detail below with reference to the drawings and examples. The following examples are intended to illustrate the present application but are not intended to limit the scope of the present application.

In the description of the embodiments of the present application, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of describing the embodiments of the present application and simplifying the description, but do not indicate or imply that the referred devices or elements must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the embodiments of the present application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the embodiments of the present application, it should be noted that the terms "connected" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected, unless explicitly stated or limited otherwise; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. Specific meanings of the above terms in the embodiments of the present application can be understood in specific cases by those of ordinary skill in the art.

In the embodiments of the present application, unless otherwise explicitly specified or limited, the first feature "on" or "under" the second feature may be directly contacted with the second feature or indirectly contacted with the second feature through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the description herein, references to the description of the terms "a particular example," "one embodiment," "an example," "some embodiments," "some examples," "some embodiments," or "possible embodiments," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of an embodiment of the application. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

As shown in fig. 1 to 8, in an embodiment of the present application, there is provided an automatic tensioner for an automobile, including a fixed frame 101, a slider 102, a cylindrical spring 103, a roller 104, a rotating shaft 105; the roller 104 is rotationally connected with a rotating shaft 105, and the rotating shaft 105 is slidably connected with the fixed frame 101; the sliding seat 102 is connected with the fixed frame 101 in a sliding manner along a linear direction, the rotating shaft 105 is vertical to the sliding direction of the sliding seat 102 relative to the fixed frame 101, and the sliding direction of the box of the rotating shaft 105 relative to the fixed frame 101 is parallel to the sliding direction of the sliding seat 102 relative to the fixed frame 101; the central axis of the cylindrical spring 103 is parallel to the sliding direction of the sliding seat 102 relative to the fixed frame 101, one end of the cylindrical spring 103 is connected with the sliding seat 102, the other end of the cylindrical spring 103 is connected with the fixed frame 101, and the cylindrical spring 103 is in a tensioning state; the rotating shaft 105, the sliding seat 102 and the cylindrical spring 103 are arranged in a direction parallel to a central axis of the spring, the sliding seat 102 is positioned between the cylindrical spring 103 and the rotating shaft 105, and the sliding seat 102 is abutted against the rotating shaft 105 in the direction parallel to the central axis of the cylindrical spring 103.

The automatic tensioning ware that is applied to car that this embodiment provided, in the course of the work, the belt is pushed up along the direction of perpendicular to belt to the periphery of gyro wheel 104, pivot 105 slides along mount 101, slide 102 compression cylinder spring 103, cylinder spring 103 is flexible in-process, slide 102 moves along the rectilinear direction, for overspeed device tensioner among the prior art, the contained angle between gyro wheel 104 and the belt can keep unchanged or the change volume is littleer, change more steadily to the tensile force of belt automatic tensioning, and the required activity space of the flexible regulation tensile force of rectilinear direction is littleer for overspeed device tensioner among the prior art, it is big to have solved overspeed device tensioner occupation space among the prior art, adjust unstable problem to the tensile force.

In some embodiments, the shape of the fixing frame 101 is Contraband, the fixing frame 101 includes a first guide rod 106, a second guide rod 107, and a fixing block 108, the first guide rod 106 is parallel to the second guide rod 107, one end of the first guide rod 106 is fixedly connected to the fixing block 108, one end of the second guide rod 107 is fixedly connected to the fixing block 108, the fixing block 108 is located between the first guide rod 106 and the second guide rod 107, the sliding seat 102 is slidably connected to the first guide rod 106 and the second guide rod 107, the sliding direction of the sliding seat 102 with respect to the first guide rod 106 and the sliding direction of the sliding seat 102 with respect to the second guide rod 107 are parallel, the sliding direction of the sliding seat 102 with respect to the first guide rod 106 is parallel to the first guide rod 106, the cylindrical spring 103 is located between the sliding seat 102 and the fixing block 108, the central axis of the cylindrical spring 103 is parallel to the first guide rod 106, one end of the cylindrical spring 103 abuts against the sliding seat 102 along a direction parallel to the first guide rod 106, and the other end of the cylindrical spring 103 abuts against the fixed block 108 along a direction parallel to the first guide rod 106; the rotating shaft 105 is located between the first guide rod 106 and the second guide rod 107, the roller 104 is located between the first guide rod 106 and the second guide rod 107, one end of the rotating shaft 105 is slidably connected with the first guide rod 106, and the other end of the rotating shaft 105 is slidably connected with the second guide rod 107.

Through the above embodiment, the first guide rod 106 and the second guide rod 107 respectively guide two ends of the rotating shaft 105, and during the extension and retraction of the cylindrical spring 103, the rotating shaft 105 slides more stably relative to the fixed frame 101, so that the friction resistance of the rotating shaft 105 and the sliding base 102 during the sliding process is reduced.

In some embodiments, the carriage 102 is shaped like Contraband, the carriage 102 includes a first ejector pin 109, a second ejector pin 110, the fixing plate 111 is parallel to the first ejector rod 109 and the second ejector rod 110, the fixing plate 111 is located between the first ejector rod 109 and the second ejector rod 110, one end of the first ejector rod 109 is fixedly connected with the fixing plate 111, the second ejector rod 110 is fixedly connected with the fixing plate 111, the cylindrical spring 103 is located between the fixing plate 111 and the fixing block 108, one end, away from the fixing block 108, of the cylindrical spring 103 is abutted to the fixing plate 111, the roller 104 is located between the first ejector rod 109 and the second ejector rod 110, the fixing plate 111 is located between the roller 104 and the cylindrical spring 103, the first ejector rod 109 and the second ejector rod 110 are located on one side, close to the cylindrical spring 103, of the rotating shaft 105, one end, away from the fixing plate 111, of the first ejector rod 109 is abutted to one end of the rotating shaft 105, and one end, away from the fixing plate 111, of the second ejector rod is abutted to the other end of the rotating shaft 105; the first ejector pin 109 is slidably connected to the first guide bar 106, and the second ejector pin 110 is slidably connected to the second guide bar 107.

Through the above embodiment, the sliding seat 102 is shaped like Contraband, which can provide a moving space for the roller 104, and simultaneously push the two ends of the rotating shaft 105 synchronously, so that the rotating shaft 105 moves more stably and the structure is more compact.

In some embodiments, a first guide groove 112 is formed on a surface of the first guide bar 106 close to the second guide bar 107, the first guide groove 112 is arranged in a direction parallel to the first guide bar 106, a second guide groove 113 is formed on a surface of the second guide bar 107 close to the first guide bar 106, the second guide groove 113 is arranged in a direction parallel to the second guide bar 107, the first ejector pin 109 is located in the first guide groove 112, the first ejector pin 109 is slidably connected with the first guide groove 112, the second ejector pin 110 is located in the second guide groove 113, and the second ejector pin 110 is slidably connected with the second guide groove 113; one surface of the fixing plate 111 close to the first guide bar 106 is slidably connected to the first guide bar 106, and one surface of the fixing plate 111 close to the second guide bar 107 is slidably connected to the second guide bar 107.

With the above embodiment, the first guide groove 112 guides the first ejector pin 109, and the second guide groove 113 guides the second ejector pin 110, so that the carriage 102 moves more smoothly.

In some embodiments, an anti-separation rod 114 is fixedly connected to a surface of the fixing plate 111 close to the fixing block 108, the anti-separation rod 114 is parallel to a central axis of the cylindrical spring 103, and the anti-separation rod 114 is inserted into an end of the cylindrical spring 103 far from the fixing block 108.

In some embodiments, an anti-falling sleeve 115 is fixedly connected to a surface of the fixing block 108 close to the fixing plate 111, a central axis of the anti-falling sleeve 115 is parallel to a central axis of the cylindrical spring 103, and an end of the cylindrical spring 103 far from the fixing plate 111 is inserted into the anti-falling sleeve 115.

Through above-mentioned embodiment, anticreep pole 114 and anticreep sleeve 115 can lead cylinder spring 103, avoids cylinder spring 103's axis to take place slope or crooked at flexible in-process, makes cylinder spring 103 flexible deformation more steady.

In some embodiments, the fixing block 108 includes a first connecting block 116 and a second connecting block 117, the first connecting block 116 is integrally connected to the first guide rod 106, the second connecting block 117 is integrally connected to the second guide rod 107, and the first connecting block 116 and the second connecting block 117 are detachably and fixedly connected; the anti-falling sleeve 115 comprises a first sleeve 118 and a second sleeve 119, the first sleeve 118 is semi-cylindrical, the second sleeve 119 is semi-cylindrical, the anti-falling sleeve 115 is formed by splicing the first sleeve 118 and the second sleeve 119, and one end, far away from the fixing plate 111, of the cylindrical spring 103 is abutted to the first connecting block 116 and the second connecting block 117 respectively.

Through the above embodiment, the fixing frame 101 is divided into two halves by taking the joint of the first connecting block 116 and the second connecting block 117 as a bisection surface, which is convenient for disassembly and assembly.

In some embodiments, the rotating shaft 105 includes a first prism rod 120, a second prism rod 121 and a cylindrical rod 122, the first prism rod 120, the second prism rod 121 and the cylindrical rod 122 are parallel, the cylindrical rod 122 is located between the first prism rod 120 and the second prism rod 121, two ends of the cylindrical rod 122 are respectively connected with the first prism rod 120 and the second prism rod 121 integrally, the cross section of the first prism rod 120 is square, the cross section of the second prism rod 121 is square, the side length of the cross section of the first prism rod 120 is smaller than the diameter of the cylindrical rod 122, the side length of the cross section of the second prism rod 121 is smaller than the diameter of the cylindrical rod 122, the central axes of the first prism rod 120, the cylindrical rod 122 and the second prism rod 121 are located on the same straight line, the first prism rod 120 is located in the first guide groove 112, the outer side surface of the first prism rod 120 is connected with the inner wall of the first guide groove 112 in a sliding manner, the second prism rod 121 is located in the second guide groove 113, and the outer side surface of the second prism rod 121 is slidably connected with the inner wall of the second guide groove 113.

In some embodiments, the automatic tensioner applied to the automobile further includes a first outer retainer ring 123, a first inner retainer ring 124, a second inner retainer ring 125, and a second outer retainer ring 126, wherein the first outer retainer ring 123 is sleeved on the first prism rod 120, the first inner retainer ring 124 is sleeved on the cylinder rod 122, the first push rod 109 is sandwiched between the first outer retainer ring 123 and the first inner retainer ring 124, the outer wall diameter of the first outer retainer ring 123 is greater than the width of the first guide groove 112, the outer wall diameter of the first inner retainer ring 124 is greater than the width of the first guide groove 112, the second outer retainer ring 126 is sleeved on the second prism rod 121, the second inner retainer ring 125 is sleeved on the cylinder rod 122, the second push rod 110 is sandwiched between the second outer retainer ring 126 and the second inner retainer ring 125, the outer wall diameter of the second outer retainer ring 126 is greater than the width of the second guide groove 113, and the outer wall diameter of the second inner retainer ring 125 is greater than the width of the second guide groove 113; the first outer baffle ring 123 is tightly matched with the diameter of the first ejector pin 109, the first inner baffle ring 124 is connected with the first ejector pin 109 in a sliding manner, the second outer baffle ring 126 is tightly matched with the second ejector pin 110, and the second outer baffle ring 126 is connected with the second ejector pin 110 in a sliding manner; the automatic tensioner applied to the automobile further comprises an intermediate baffle ring 127, the roller 104 comprises a roller 128, a first rolling bearing 129 and a second rolling bearing 130, the first rolling bearing 129 and the second rolling bearing 130 are sleeved on the cylindrical rod 122, the first rolling bearing 129 and the second rolling bearing 130 are positioned between a first inner baffle ring 124 and a second inner baffle ring 125, the intermediate baffle ring 127 is sleeved on the cylindrical rod 122, the intermediate baffle ring 127 is positioned between the first rolling bearing 129 and the second rolling bearing 130, one end of an inner ring of the first rolling bearing 129 is axially abutted with the first inner baffle ring 124, the other end of the inner ring of the first rolling bearing 129 is axially abutted with the intermediate baffle ring 127, one end of the second rolling bearing 130 is axially abutted with the second inner baffle ring 125, the other end of the second rolling bearing 130 is axially abutted with the intermediate baffle ring 127, the first rolling bearing 129 is positioned inside one end of the roller 128, the second rolling bearing 130 is located inside the other end of the roller 128, the central axis of the roller 128 and the central axis of the cylindrical rod 122 are located on the same straight line, the outer side surface of the outer ring of the first rolling bearing 129 is tightly matched with the inner wall of the roller 128, and the outer side surface of the outer ring of the second rolling bearing 130 is tightly matched with the inner wall of the roller 128.

In some embodiments, the fixing block 108 is provided with a splicing hole 131, the splicing hole 131 penetrates through the first connecting rod and the second connecting rod along the arrangement direction of the first connecting rod and the second connecting rod, a splicing bolt 132 is inserted into the splicing hole 131, and the first connecting block 116 and the second connecting block 117 are fastened and connected through the splicing bolt 132; a first fixing hole 133 is formed in the first guide rod 106, a second fixing hole 134 is formed in the second guide rod 107, the first fixing hole 133 is parallel to the second fixing hole 134, the first fixing hole 133 and the second fixing hole 134 are perpendicular to the splicing hole 131, the first fixing hole 133 penetrates through the first guide rod 106, the second fixing hole 134 penetrates through the second guide rod 107, a first fixing bolt 135 is inserted into the first fixing hole 133, and a second fixing bolt 136 is inserted into the second fixing hole 134; the automatic tensioner applied to the automobile further comprises a fixed seat 137 and a pressing plate 138, the fixed seat 101 is located between the pressing plate 138 and the fixed seat 137, the first fixing hole 133 and the second fixing hole 134 are located between the pressing plate 138 and the fixed seat 137, the pressing plate 138 and the fixed seat 137 are fixedly connected through a first fixing bolt 135, the pressing plate 138 and the fixed seat 137 are fixedly connected through a second fixing bolt 136, and the pressing plate 138 and the fixed seat 137 are located at one end, far away from the roller 104, of the first guide rod 106.

The automatic tensioning ware that is applied to car that this embodiment provided, easy dismounting, compact structure after the assembly, gyro wheel 104 is to the in-process motion of automatic tensioning of belt steady, and the activity space that gyro wheel 104 took in to the automatic tensioning of belt is little.

The above examples are only for explaining the present application and are not intended to limit the present application, and those skilled in the art can make modifications to the embodiments of the present application without inventive contribution as needed after reading the present specification, but are protected by patent laws within the scope of the claims of the present application.

Claims

1. An automatic tensioner applied to an automobile is characterized by comprising a fixed frame, a sliding seat, a cylindrical spring, a roller and a rotating shaft;

2. The automatic tensioner for automobiles according to claim 1, wherein said fixing frame is shaped like Contraband, said fixing frame comprises a first guide rod, a second guide rod, a fixing block, said first guide rod is parallel to said second guide rod, one end of said first guide rod is fixedly connected to said fixing block, one end of said second guide rod is fixedly connected to said fixing block, said fixing block is located between said first guide rod and said second guide rod, said sliding seat is respectively connected to said first guide rod and said second guide rod in a sliding manner, a sliding direction of said sliding seat relative to said first guide rod and a sliding direction of said sliding seat relative to said second guide rod are parallel, a sliding direction of said sliding seat relative to said first guide rod is parallel to said first guide rod, the cylindrical spring is positioned between the sliding seat and the fixed block, the central axis of the cylindrical spring is parallel to the first guide rod, one end of the cylindrical spring is abutted against the sliding seat along the direction parallel to the first guide rod, and the other end of the cylindrical spring is abutted against the fixed block along the direction parallel to the first guide rod; the pivot is located between first guide bar and the second guide bar, the gyro wheel is located first guide bar with between the second guide bar, wherein one end of pivot with first guide bar sliding connection, the other end of pivot with second guide bar sliding connection.

3. The automatic tensioner applied to automobiles of claim 2, wherein the sliding base is shaped like Contraband, the sliding base comprises a first ejector rod, a second ejector rod, and a fixing plate, the first ejector rod is parallel to the second ejector rod, the fixing plate is located between the first ejector rod and the second ejector rod, one end of the first ejector rod is fixedly connected with the fixing plate, the second ejector rod is fixedly connected with the fixing plate, the cylindrical spring is located between the fixing plate and the fixing block, one end of the cylindrical spring far away from the fixing block is abutted against the fixing plate, the roller is located between the first ejector rod and the second ejector rod, the fixing plate is located between the roller and the cylindrical spring, and the first ejector rod and the second ejector rod are located on one side of the rotating shaft close to the cylindrical spring, one end of the first pushing rod, which is far away from the fixed plate, is abutted against one end of the rotating shaft, and one end of the second pushing rod, which is far away from the fixed plate, is abutted against the other end of the rotating shaft; the first ejector rod is connected with the first guide rod in a sliding mode, and the second ejector rod is connected with the second guide rod in a sliding mode.

4. The automatic tensioner for automobiles according to claim 3, wherein a first guide groove is formed on a surface of said first guide bar adjacent to said second guide bar, said first guide groove is formed in a direction parallel to said first guide bar, a second guide groove is formed on a surface of said second guide bar adjacent to said first guide bar, said second guide groove is formed in a direction parallel to said second guide bar, said first ejector pin is located in said first guide groove, said first ejector pin is slidably coupled to said first guide groove, said second ejector pin is located in said second guide groove, and said second ejector pin is slidably coupled to said second guide groove; the fixed plate is close to the one side of first guide bar with first guide bar sliding connection, the fixed plate is close to the one side of second guide bar with second guide bar sliding connection.

5. The automatic tensioner applied to the automobile as claimed in claim 4, wherein an anti-disengaging rod is fixedly connected to a surface of the fixing plate close to the fixing block, the anti-disengaging rod is parallel to a central axis of the cylindrical spring, and the anti-disengaging rod is inserted into an end of the cylindrical spring far away from the fixing block.

6. The automatic tensioner applied to the automobile as claimed in claim 5, wherein an anti-disengaging sleeve is fixedly connected to a surface of the fixing block, which is close to the fixing plate, a central axis of the anti-disengaging sleeve is parallel to a central axis of the cylindrical spring, and an end of the cylindrical spring, which is far away from the fixing plate, is inserted into the anti-disengaging sleeve.

7. The automatic tensioner for automobiles according to claim 6, wherein the fixed block comprises a first connecting block and a second connecting block, the first connecting block is integrally connected with the first guide rod, the second connecting block is integrally connected with the second guide rod, and the first connecting block is detachably and fixedly connected with the second connecting block; the anti-disengaging sleeve comprises a first sleeve and a second sleeve, the first sleeve is semi-cylindrical in shape, the second sleeve is semi-cylindrical in shape, the anti-disengaging sleeve is formed by the first sleeve and the second sleeve in an assembled mode, and one end of the fixing plate is far away from the cylindrical spring and is abutted to the first connecting block and the second connecting block respectively.

8. The automatic tensioner for automobiles according to claim 7, wherein said rotating shaft comprises a first prism rod, a second prism rod and a cylindrical rod, said first prism rod, said second prism rod and said cylindrical rod are parallel, said cylindrical rod is located between said first prism rod and said second prism rod, both ends of said cylindrical rod are integrally connected with said first prism rod and said second prism rod respectively, the cross section of said first prism rod is square, the cross section of said second prism rod is square, the side length of said first prism rod is smaller than the diameter of said cylindrical rod, the side length of said second prism rod is smaller than the diameter of said cylindrical rod, the central axis of said first prism rod, the central axis of said cylindrical rod and the central axis of said second prism rod are located on the same straight line, the first prism rod is located in the first guide groove, the outer side face of the first prism rod is connected with the inner wall of the first guide groove in a sliding mode, the second prism rod is located in the second guide groove, and the outer side face of the second prism rod is connected with the inner wall of the second guide groove in a sliding mode.

9. The automatic tensioner for automobiles of claim 8, further comprising a first outer stopper ring, a first inner stopper ring, a second inner stopper ring, and a second outer stopper ring, wherein the first outer stopper ring is sleeved on the first prism rod, the first inner stopper ring is sleeved on the cylindrical rod, the first ejector pin is sandwiched between the first outer stopper ring and the first inner stopper ring, the outer wall diameter of the first outer stopper ring is larger than the width of the first guide groove, the outer wall diameter of the first inner stopper ring is larger than the width of the first guide groove, the second outer stopper ring is sleeved on the second prism rod, the second inner stopper ring is sleeved on the cylindrical rod, the second ejector pin is sandwiched between the second outer stopper ring and the second inner stopper ring, the outer wall diameter of the second outer stopper ring is larger than the width of the second guide groove, the diameter of the outer wall of the second inner baffle ring is larger than the width of the second guide groove; the first outer baffle ring is tightly matched with the diameter of the first ejector rod, the first inner baffle ring is connected with the first ejector rod in a sliding mode, the second outer baffle ring is tightly matched with the second ejector rod, and the second outer baffle ring is connected with the second ejector rod in a sliding mode;

10. The automatic tensioner for automobiles of claim 9, wherein the fixing block is provided with a splicing hole, the splicing hole penetrates through the first connecting rod and the second connecting rod along the arrangement direction of the first connecting rod and the second connecting rod, a splicing bolt is inserted into the splicing hole, and the first connecting block and the second connecting block are fastened and connected by the splicing bolt;