Balancer and charging pile

Abstract

The utility model provides a balancer and a charging pile, and the balancer comprises a housing which is provided with a plurality of installation structures in the circumferential direction; the central shaft is arranged in the shell; the second end of the central shaft protrudes out of the upper surface of the shell; the rotary drum is positioned in the shell, is arranged on the central shaft in a sleeving manner, and can rotate around the central shaft; a coil spring is arranged in the rotary drum, and the coil spring is arranged around the central shaft; one end of the take-up line is fixedly connected with the rotary drum and is wound on the rotary drum in the first direction, the other end of the take-up line penetrates through the shell and is located outside the shell, and when the other end of the take-up line is pulled, the rotary drum can rotate; and the fixing plate is used for fixing the shell, and the shell is fixedly mounted on the fixing plate through the mounting structures. The balancer is simple in structure and low in cost.

Description

Technical Field

[0001] The present application relates to the technical field of wire-receiving devices, and in particular to a balancer and a charging pile. Background Art

[0002] The balancer, also called a hoverer, is widely used in many fields. For example, the balancer can be used in charging stations and gas stations. The take-up wire in the balancer can be connected to the oil pipe of the gas pump in the gas station or the cable of the charging pile in the charging station (collectively referred to as "pipeline"), and the pulling force of the balancer on the take-up wire can be used to balance the gravity of the pipeline, so that the pipeline is always in a suspended state during the process of pulling out and retracting, ensuring that the pipeline will not contact the ground, avoiding contamination of the pipeline, and eliminating safety hazards. However, in conventional balancers, the outer shell needs to be installed on a base plate first, and then fixed to the fixed plate through the base plate. This structure is fixed multiple times, the structure is redundant, and the cost is increased.

[0003] Therefore, it is desired to provide a balancer that can simplify the balancer structure and reduce costs. Utility Model Content

[0004] One of the embodiments of the present application provides a balancer, comprising: an outer shell, wherein a plurality of mounting structures are arranged on the circumference of the outer shell; a central axis, wherein the central axis is arranged inside the outer shell; a second end of the central axis protrudes from the upper surface of the outer shell; a rotating drum, wherein the rotating drum is located inside the outer shell and is sleeved on the central axis and can rotate around the central axis; a coil spring is arranged inside the rotating drum, wherein the coil spring is arranged around the central axis, the inner end of the coil spring is fixedly connected to the central axis, and the outer end of the coil spring is fixed inside the rotating drum; a take-up wire, wherein one end of the take-up wire is fixedly connected to the rotating drum and is wound around the rotating drum along a first direction, and the other end passes through the outer shell and is located outside the outer shell, and when the other end of the take-up wire is pulled, the rotating drum can be rotated; a fixing plate, which is used to fix the outer shell and limit the part of the take-up wire located outside the outer shell, and the outer shell is fixedly mounted on the fixing plate through the plurality of mounting structures.

[0005] In some embodiments of the present application, the fixing plate includes a first fixing portion and a second fixing portion, the housing is fixed to the first fixing portion, the second fixing portion is provided with a limiting structure, and the pull wire passes through the limiting structure and is limited by the limiting structure.

[0006] In some embodiments of the present application, a first mounting hole is provided on the plurality of mounting structures, and the first fixing portion is provided with a second mounting hole corresponding to the first mounting hole, and the housing is fixedly mounted on the first fixing portion by connecting the first mounting hole and the second mounting hole by bolts.

[0007] In some embodiments of the present application, an adjustment plate is provided at the second end of the central shaft, and the adjustment plate is sleeved on the second end of the central shaft and can drive the central shaft to rotate; a pawl structure is provided on the upper surface of the outer shell, and the pawl structure cooperates with the adjustment plate to tighten or loosen the coil spring.

[0008] In some embodiments of the present application, a plurality of limiting openings are arranged on the circumference of the adjustment plate, the pawl structure includes a fixing portion and a limiting portion, the pawl structure is fixedly arranged on the upper surface of the outer shell through the fixing portion, and the pawl structure is clamped in the limiting opening by the limiting portion to limit the adjustment plate.

[0009] In some embodiments of the present application, each of the limiting openings includes two symmetrical clamping points, and the limiting portion is clamped at the clamping points to limit the adjustment sheet.

[0010] In some embodiments of the present application, the fixing plate is directly fixed to the equipment on which the balancer needs to be installed.

[0011] In some embodiments of the present application, a nut is provided at the second end of the central shaft, and the nut limits the adjustment plate in the axial direction of the central shaft.

[0012] In some embodiments of the present application, the nut and the adjusting plate are integrally formed, and the nut drives the central shaft to rotate.

[0013] A second embodiment of the present application provides a charging pile, comprising: a charging pile body; a balancer as described above, installed on the top of the outer shell of the charging pile body; and a cable clamp, connected to the pull-up wire of the balancer and fixedly clamping the charging cable of the charging pile.

[0014] The balancer provided in the embodiment of the present application can simplify the balancer structure and reduce costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The following figures describe in detail the exemplary embodiments disclosed in this application. The same reference numerals represent similar structures in several views of the drawings. Those skilled in the art will understand that these embodiments are non-limiting, exemplary embodiments, and the drawings are only for the purpose of illustration and description, and are not intended to limit the scope of this application. Other embodiments may also accomplish the application intent in this application. It should be understood that the drawings are not drawn to scale.

[0016] in:

[0017] Figure 1 is a schematic diagram of the overall structure of a balancer according to some embodiments of the present application;

[0018] Figure 2is a schematic diagram of the structure of the balancer without the fixing plate according to some embodiments of the present application;

[0019] Figure 3 is a schematic diagram of a structure of a balancer after a portion of the structure is cut off according to some embodiments of the present application;

[0020] Figure 4 It is a schematic diagram of the structure of the balancer with the upper surface of the rotating drum removed according to some embodiments of the present application. DETAILED DESCRIPTION

[0021] The following description provides specific application scenarios and requirements of the present application, with the purpose of enabling those skilled in the art to make and use the content in the present application. It will be apparent to those skilled in the art that various local modifications to the disclosed embodiments are apparent, and the general principles defined herein may be applied to other embodiments and applications without departing from the spirit and scope of the present application. Therefore, the present application is not limited to the embodiments shown, but to the widest scope consistent with the claims.

[0022] Gas stations, charging stations and other places generally need to be equipped with balancers, which are also called hovering devices. They can be used to balance the gravity of the oil pipes of the gas pumps in the gas stations or the cables of the charging piles in the charging stations (hereinafter collectively referred to as "pipelines"), suspend the pipelines in the air, and automatically retract the pipelines. Specifically, the balancer can include a shell, a spring box (also called a "rotating drum") and a retracting wire housed in the shell, one end of the retracting wire is fixedly connected to the pipeline, and the other end is wound on the spring box, and a coil spring is arranged in the spring box, and the coil spring is arranged around a central axis. When the staff pulls the pipeline, the end of the take-up wire connected to the pipeline will move in the pulling direction of the staff, so that the part of the take-up wire wrapped around the spring box is released from the spring box, driving the spring box to rotate around the central axis. At the same time, the coil spring in the spring box will deform (for example, shrink inward), so that the coil spring has a pulling force on the take-up wire. This pulling force can be used to balance the gravity of the pipeline, so that the pipeline can be suspended in the air. The staff does not need to perform the operation of stabilizing the pipeline when using the pipeline, thereby reducing the labor intensity of the staff. In addition, during the process of pulling out and retracting the pipeline, the take-up wire can pull the pipeline so that the pipeline is always in a suspended state, avoiding the pipeline from touching the ground and being damaged, so as to eliminate safety hazards.

[0023] However, in conventional balancers, the housing needs to be first mounted on a base plate and then fixed to a fixed plate through the base plate. This structure is fixed multiple times, which results in structural redundancy and increased costs. Based on this, the present application provides a balancer structure that eliminates the traditional base plate and directly mounts the housing on the fixed plate through a mounting structure arranged on the circumference of the housing. The structure is simpler, and weight can be reduced, which reduces costs.

[0024] The technical solution of the present application is described in detail below with reference to the embodiments and drawings.

[0025] Figure 1 It is a schematic diagram of the overall structure of a balancer according to some embodiments of the present application. Figure 2 It is a schematic diagram of the structure of the balancer without the fixing plate shown in some embodiments of the present application. Figure 3 It is a schematic diagram of the structure of a balancer after part of the structure is cut off according to some embodiments of the present application. Figure 4 It is a schematic diagram of the structure of the balancer with the upper surface of the rotating drum removed according to some embodiments of the present application.

[0026] refer to Figure 1 As shown, the embodiment of the present application provides a balancer 100 and a balancer 100". It should be noted that the balancer 100 and the balancer 100" are two different designs of the balancer described in the present application, wherein the balancer 100 is a left-outlet structure, and the balancer 100" is a right-outlet structure. The balancer 100 and the balancer 100" are axisymmetric structures, and the balancer 100 and the balancer 100" are completely identical in other structures except for the different outlet directions. Therefore, although the present application shows two structures of the balancer 100 and the balancer 100" here, only one of the structures (for example, the balancer 100) is described in detail later, and those skilled in the art can fully understand the structure of the balancer 100" based on the structure of the balancer 100.

[0027] refer to Figures 1 to 4As shown, the balancer 100 provided in the embodiment of the present application may include a housing 110, a central shaft 120, a rotating drum 130, a take-up wire 140 and a fixing plate 170. Among them, a plurality of mounting structures 111 are arranged on the circumference of the housing 110. The central shaft 120 is arranged in the housing 110, and the second end of the central shaft 120 protrudes from the upper surface of the housing 110. The rotating drum 130 is located in the housing 110 and is sleeved on the central shaft 120, and can rotate around the central shaft 120; a coil spring 131 is arranged in the rotating drum 130, and the coil spring 131 is arranged around the central shaft 120, the inner end of the coil spring 131 is fixedly connected to the central shaft 120, and the outer end of the coil spring 131 is fixed inside the rotating drum 130. The ratchet structure 160 cooperates with the adjusting sheet 150 to tighten or loosen the coil spring 131. One end of the take-up wire 140 is fixedly connected to the rotating drum 130 and is wound around the rotating drum 130 along a first direction, and the other end passes through the housing 110 and is located outside the housing 110 to connect with a target object (not shown in the figure) that needs to be retracted and pulled out. When the other end of the take-up wire 140 is pulled, the rotating drum 130 can be rotated. It should be noted that the first direction in the embodiment of the present application may refer to a rotation direction with the central axis 120 as the rotation center. For example, the first direction in the embodiment of the present application may be Figure 1 The fixing plate 170 is used to fix the housing 110 and limit the portion of the take-up wire 140 located outside the housing 110. The fixing plate 170 is used to fix the balancer 100 at a set position for easy use. The take-up wire 140 is limited to avoid the change of the angle between the take-up wire 140 and the housing 110 during use, which affects the use.

[0028] The working mechanism of the balancer 100 will be described exemplarily below in combination with the structure of the balancer 100 .

[0029] As an exemplary description, when the staff member pulls out the target object, that is, pulls the other end of the take-up wire 140 to move in a direction away from the inside of the housing 110 (that is, the other end of the take-up wire 140 is pulled out), the other part wound on the rotating drum 130 is released from the rotating drum 130, and the rotating drum 130 is driven to rotate in the first direction (for example, Figure 1 In the counterclockwise direction), since the outer end of the coil spring 131 is fixedly connected to the inner side wall of the rotating drum 130, when the rotating drum 130 rotates in the first direction, the outer end of the coil spring 131 will be driven to rotate in the first direction, and the inner end of the coil spring 131 will remain stationary, so that the coil spring 131 undergoes bending elastic deformation and twists in the plane, which is specifically manifested as radial expansion deformation or contraction deformation of the coil spring 131 (that is, the coil spring 131 is tightened). For example, referring to Figure 4As shown, the winding direction of the coil spring 131 around the central axis 120 is a second direction opposite to the first direction ( Figure 4 When the outer end of the coil spring 131 rotates along the first direction, the coil spring 131 expands radially and deforms to generate an elastic force, which acts on the rotating drum 130 and is provided as a pulling force to the take-up wire 140. The pulling force can cause the rotating drum 130 to rotate along the second direction when the staff stops pulling the other end of the take-up wire 140, so that the other end of the take-up wire 140 moves toward the inside of the housing 110 (i.e., the other end of the take-up wire 140 is retracted), thereby retracting the target object.

[0030] Continue to refer Figure 1 As shown, in some embodiments of the present application, the fixing plate 170 includes a first fixing portion 171 and a second fixing portion 172, the housing 110 is fixed to the first fixing portion 171, the second fixing portion 172 is provided with a limiting structure 173, and the take-up wire 140 passes through the limiting structure 173 and is limited by the limiting structure 173. The first fixing portion 171 is, for example, a square or circular shape that can adapt to the shape of the housing 110. The second fixing portion 172 is a rectangular shape that adapts to the line shape of the take-up wire 140. The first fixing portion 171 and the second fixing portion 172 are integrally connected and formed.

[0031] Continue to refer Figure 1 As shown, in some embodiments of the present application, the plurality of mounting structures 111 are evenly distributed on the circumferential edge of the housing 110. The number of the mounting structures 111 is, for example, four.

[0032] Continue to refer Figure 1 As shown, specifically, in some embodiments of the present application, a first mounting hole is provided on the plurality of mounting structures 111, and a second mounting hole corresponding to the first mounting hole is provided on the first fixing portion 171 (the quantity and position are corresponding), and the housing 110 can be fixedly installed on the first fixing portion 171 by fixing the first mounting hole and the second mounting hole with bolts.

[0033] In some embodiments of the present application, the fixing plate 170 is directly fixed to the equipment on which the balancer needs to be installed, such as the outside or top of a charging pile or a gas pump.

[0034] In a conventional balancer, the housing needs to be first mounted on a base plate and then fixed to the fixing plate through the base plate. This structure is fixed multiple times, the structure is redundant, and the cost is increased. In the technical solution of the present application, the base plate is eliminated, and the housing 110 is directly mounted on the fixing plate 170 through the mounting structure 111 arranged on the circumference of the housing 110. The structure is simpler, and the weight can be reduced and the cost can be reduced.

[0035] Continue to refer Figure 1 As shown, in some embodiments of the present application, a plurality of radial reinforcing ribs 112 are provided on the upper surface and / or the lower surface of the shell 110, and the plurality of radial reinforcing ribs 112 are radiated and distributed in a spoke-like manner from the center of the upper surface and / or the lower surface of the shell 110, and extend to the edge of the upper surface and / or the lower surface of the shell 110. By providing a plurality of radial reinforcing ribs 112 on the upper surface and / or the lower surface of the shell 110, the strength and rigidity of the shell 110 can be enhanced without increasing the wall thickness of the shell 110, thereby saving the material consumption of manufacturing the shell 110, reducing the weight of the shell 110, and reducing the cost while ensuring that the shell 110 has a long service life.

[0036] In some embodiments of the present application, a notch (not shown in the figure) is opened on the side surface of the central shaft 120, and the inner end of the coil spring 131 is clamped in the notch.

[0037] Continue to refer Figures 1 to 3 As shown, in some embodiments of the present application, an adjustment sheet 150 is provided at the second end of the central shaft 120, and the adjustment sheet 150 is sleeved on the second end of the central shaft 120 and can drive the central shaft 120 to rotate; wherein, a plurality of limiting openings 151 are provided on the circumference of the adjustment sheet 150; and a pawl structure 160 is also provided on the upper surface of the outer shell 110, and the pawl structure 160 is adapted to the plurality of limiting openings 151.

[0038] Continue to refer Figures 1 to 3 As shown, in some embodiments of the present application, a nut 121 is provided at the second end of the central shaft 120, and the nut 121 limits the axial position of the adjusting piece 150 of the central shaft 120. In other embodiments of the present application, the nut 121 can be integrally formed with the adjusting piece 150, and rotating the nut 121 can drive the adjusting piece 150 to rotate, so that the adjusting piece 150 can be rotated conveniently.

[0039] In the balancer 100 provided in the embodiment of the present application, by installing the second end of the central shaft 120 into the nut 121, and then fixing it to the upper surface of the housing 110 through the nut 121 and the adjustment plate 150, it can be prevented that during the process of pulling out or retracting the other end of the take-up wire 140, the rotation of the rotating drum 130 drives the central shaft 120 to rotate. The rotation of the central shaft 120 will cause the position of the inner end of the coil spring 131 to change, resulting in a change in the tension provided by the coil spring 131 to the take-up wire 140, thereby affecting the smoothness and feel of the staff when pulling out or retracting the other end of the take-up wire 140.

[0040] Continue to refer Figures 1 to 4As shown, in some embodiments of the present application, the pawl structure 160 includes a fixing portion 161 and a limiting portion 162. The pawl structure 160 is fixedly arranged on the upper surface of the housing 110 through the fixing portion 161, and the limiting portion 162 is clamped in the limiting opening 151 to limit the adjustment sheet 150. The adjustment sheet 150 is rotated so that the limiting portion 162 can be clamped in different limiting openings 151, and the limiting portion 162 is clamped in different limiting openings 151 to limit the adjustment sheet 150. The adjustment sheet 150 limited in different positions drives the central shaft 120 to rotate at different angles, thereby tightening or relaxing the coil spring 131 connected to the central shaft 120. The tightening or relaxing of the coil spring 131 will cause different initial tensions on the take-up wire 140. In summary, the present application can tighten or loosen the coil spring 131 through the cooperation of the pawl structure 160 and the adjustment sheet 150 , thereby changing the initial tension of the coil spring 131 on the take-up wire 140 .

[0041] In some embodiments of the present application, a socket wrench, a ratchet wrench, an open-end wrench, or other suitable tools can be used to adjust and rotate the adjusting piece 150. In some embodiments of the present application, the adjusting piece 150 can be rotated directly or through the nut 121.

[0042] In some embodiments of the present application, the plurality of limiting openings 151 are evenly distributed on the circumference of the adjustment sheet 150. The number of the limiting openings 151 is, for example, four.

[0043] In some embodiments of the present application, each of the limiting openings 151 includes two symmetrical clamping points, and the limiting portion 162 is specifically clamped at the clamping points to limit the adjustment sheet 150. The two clamping points are symmetrical in the radial direction, corresponding to the clockwise direction (i.e. Figure 4 right-hand direction) and counterclockwise direction (i.e. Figure 4 The limiting portion 162 is stuck in the Figure 4 When the adjusting piece 150 is locked at the left side of the middle, the left rotation of the adjusting piece 150 can be restricted; the limiting portion 162 is locked at Figure 4 When the right side of the middle card point is reached, the adjusting piece 150 can be limited to rotate rightward. That is to say, the pawl structure 160 and the adjusting piece 150 in the technical solution of the present application can achieve the limiting cooperation in the clockwise and counterclockwise directions, thereby tightening or loosening the coil spring 131.

[0044] In addition, since the pawl structure 160 and the adjustment sheet 150 in the technical solution of the present application can realize the limit fit in both clockwise and counterclockwise directions, the pawl structure 160 and the adjustment sheet 150 of the present application can be applied to the balancer of the left line-receiving mode or the balancer of the right line-receiving mode at the same time. The left line-receiving mode and the right line-receiving mode refer to the different rotation directions of the corresponding rotating drum when the reeling line is retracted and released.

[0045] In some embodiments of the present application, two symmetrical clamping points in each of the limiting openings 151 are smoothly connected, so that the limiting portion 162 can easily slide between the two clamping points.

[0046] In some exemplary embodiments, reference Figure 4 As shown, for example, when the initial tension of the coil spring 131 on the take-up wire 140 decays, the staff can use a suitable tool to rotate the adjustment plate 150 counterclockwise to drive the central axis 120 to rotate counterclockwise and drive the coil spring 131 to tighten, so that the initial tension of the coil spring 131 on the take-up wire 140 is increased, until the initial tension of the coil spring 131 on the take-up wire 140 reaches the staff's requirements, and then use the pawl structure 160 to clamp in the limit opening 151 to fix the initial position of the coil spring 131. On the contrary, for example, when the initial tension of the coil spring 131 on the take-up wire 140 is too high, the staff can use a suitable tool to rotate the adjustment plate 150 clockwise to drive the central axis 120 to rotate clockwise and drive the coil spring 131 to relax so that the initial tension of the coil spring 131 on the take-up wire 140 is reduced, until the initial tension of the coil spring 131 on the take-up wire 140 meets the staff's requirements, and then use the pawl structure 160 to clamp in the limit opening 151 to fix the initial position of the coil spring 131.

[0047] At present, the initial tension of most balancers is not appropriate, the use effect is not good, and after a period of use (such as 2 years), the initial tension of the balancer decays and cannot be raised. In the technical solution of the present application, a force adjustment mechanism composed of a ratchet structure 160 and an adjustment plate 150 is provided on the housing 110. The staff can adjust the initial tension provided by the coil spring to the take-up wire through the cooperation of the ratchet structure and the adjustment plate to meet different needs.

[0048] In some embodiments of the present application, the first end of the central shaft 120 is rotatably mounted on the fixing plate 170. In some embodiments, in order to enable the first end of the central shaft 120 to be rotatably mounted on the fixing plate 170, a mounting hole that matches the shape of the first end of the central shaft 120 may be provided on the fixing plate 170, and the first end of the central shaft 120 may be rotatably mounted on the fixing plate 170 by positioning the first end of the central shaft 120 in the mounting hole. The second end of the central shaft 120 may be shaped as a cylinder or other rotating body.

[0049] In some embodiments, in order to reduce the friction between the first end of the central shaft 120 and the mounting hole on the fixing plate 170, so that the central shaft 120 can rotate smoothly when the staff rotates the adjustment sheet 150, and reduce the operating burden of the staff, a bearing (not shown in the figure) can be arranged between the first end of the central shaft 120 and the mounting hole, wherein the outer ring of the bearing is fixed to the inner wall of the mounting hole, and the inner ring of the bearing is fixed to the first end of the central shaft 120. By arranging the bearing between the first end of the central shaft 120 and the mounting hole on the fixing plate 170, not only the friction between the first end of the central shaft 120 and the mounting hole on the fixing plate 170 can be reduced, but also the wear of the first end of the central shaft 120 can be reduced, thereby increasing the service life of the central shaft 120.

[0050] In some embodiments, the upper surface and / or lower surface of the drum 130 may have a plurality of radial reinforcing ribs (not shown in the figure), which are distributed in a spoke-like manner from the center of the upper surface and / or lower surface of the drum and extend to the edge of the upper surface and / or lower surface of the drum 130. In some embodiments, the upper surface and / or lower surface of the drum 130 may have a plurality of annular reinforcing ribs (not shown in the figure), which have different diameters from small to large and are concentrically distributed around the center of the upper surface and / or lower surface of the drum. By providing a plurality of radial reinforcing ribs and / or annular reinforcing ribs on the upper surface and / or lower surface of the drum 130, the strength and rigidity of the drum 130 can be enhanced without increasing the wall thickness of the drum 130, thereby saving the material consumption of manufacturing the drum 130, reducing the gravity of the drum 130, and reducing the cost while ensuring that the drum 130 has a long service life, and also overcoming the distortion and deformation of the drum 130 caused by the uneven stress caused by the uneven wall thickness of the drum 130.

[0051] In some embodiments, at least one bearing can be provided between the drum 130 and the central axis 120, so that the noise when the drum 130 rotates around the central axis 120 can be reduced and the friction between the drum 130 and the central axis 120 can be effectively reduced, so that the friction can be reduced to 20% of the original, so that the staff can easily pull the target object, and ensure that the target object is pulled out and retracted smoothly, so that the staff has a better operating experience and feel. In addition, the bearing can also prevent the wear between the drum 130 and the central axis 120 after the balancer 100 is used for a long time, causing the central axis 120 to tilt, thereby causing the drum 130 to tilt when rotating and contacting with the shell 110 to generate friction, making it difficult to pull the other end of the pull line 140 (i.e., the target object) or even the drum 130 and the shell 110 are stuck and the other end of the pull line 140 cannot be pulled.

[0052] The beneficial effects that may be brought about by the embodiments of the present application include but are not limited to: (1) the initial tension provided by the coil spring 131 to the take-up wire 140 can be adjusted by the cooperation of the adjustment plate 150 and the pawl structure 160, so that the balancer can adapt to target objects of different weights, and avoid the situation where the initial tension provided by the coil spring to the take-up wire is insufficient to balance the gravity of the target object when the other end of the take-up wire is connected to a target object with a heavier weight, so that the target object cannot hover at its initial position without being pulled, but falls and contacts the ground and is damaged; (2) the bottom plate in the conventional balancer is eliminated, and the shell 110 is directly installed on the fixed plate 170 through the installation structure 111 arranged on the circumference of the shell 110, which has a simpler structure, can reduce weight and reduce costs; (3) by arranging a bearing between the rotating drum 130 and the central axis 120, the noise and friction when the rotating drum rotates can be reduced, so that the staff can easily pull out the target object with a better hand feel, while ensuring that the target object is relatively smooth during the pulling out and retracting process.

[0053] It should be noted that different embodiments may produce different beneficial effects. In different embodiments, the beneficial effects that may be produced may be any one or a combination of the above, or any other beneficial effects that may be obtained.

[0054] In the balancer provided in the embodiment of the present application, the staff can adjust the initial tension provided by the coil spring to the take-up wire through the cooperation of the pawl structure and the adjustment plate to meet different needs.

[0055] An embodiment of the present application also provides a charging pile, comprising: a charging pile body; a balancer as described above, installed on the top of the outer shell of the charging pile body; and a cable clamp, connected to the pull-up wire of the balancer and fixedly clamping the charging cable of the charging pile.

[0056] Specifically, the balancer is mounted on the top of the outer shell of the charging pile body through the fixing plate.

[0057] Specifically, the cable clamp embraces the middle section of the charging cable, that is, the retractable cable is connected to the middle section of the charging cable.

[0058] When using the charging pile, the charging cable is pulled to charge the car. When the charging cable is pulled, the retracting cable is driven, and the tension of the coil spring of the balancer on the retracting cable enables the charging cable to maintain balance and not hang on the ground.

[0059] The charging pile of the present application is equipped with the balancer to ensure that the charging cable does not hang on the ground, thereby ensuring the safety of the charging cable.

[0060] The basic concepts have been described above. Obviously, for those skilled in the art, the above detailed disclosure is only for example and does not constitute a limitation of this specification. Although not explicitly stated here, those skilled in the art may make various modifications, improvements and corrections to this application. Such modifications, improvements and corrections are suggested in this specification, so such modifications, improvements and corrections still belong to the spirit and scope of the exemplary embodiments of this application.

[0061] It should be noted that in the description of this application, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", and "fix" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a rotating connection or a sliding connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood in combination with specific circumstances.

[0062] In addition, when terms such as "first", "second", and "third" are used in the specification of this application to describe various features, these terms are only used to distinguish these features and cannot be understood as indicating or implying the relationship between the features, the relative importance, or implicitly indicating the number of features indicated.

[0063] In addition, the present specification describes exemplary embodiments by reference to idealized exemplary cross-sectional views and / or plan views and / or stereograms. Therefore, differences from the illustrated shapes due to, for example, manufacturing techniques and / or tolerances are foreseeable. Therefore, the exemplary embodiments should not be interpreted as being limited to the shapes of the regions shown herein, but should include deviations in shapes caused by, for example, manufacturing. Therefore, the regions shown in the figures are schematic in nature, and their shapes are not intended to illustrate the actual shapes of the regions of the device nor to limit the scope of the exemplary embodiments.

[0064] At the same time, the present application uses specific words to describe the embodiments of this specification. For example, "one embodiment", "an embodiment", and / or "some embodiments" refer to a certain feature, structure or characteristic related to at least one embodiment of the present application. Therefore, it should be emphasized and noted that "one embodiment" or "an embodiment" or "an alternative embodiment" mentioned twice or more in different positions in the present application does not necessarily refer to the same embodiment. In addition, some features, structures or characteristics in one or more embodiments of the present application can be appropriately combined.

[0065] Similarly, it should be noted that in order to simplify the description of the disclosure of this application and thus help understand one or more application embodiments, in the above description of the embodiments of this application, multiple features are sometimes merged into one embodiment, figure or description thereof. However, this disclosure method does not mean that the features required by the object of this application are more than the features mentioned in the claims. In fact, the features of the embodiments are less than all the features of the single embodiment disclosed above.

[0066] Finally, it should be understood that the embodiments described in this application are only used to illustrate the principles of the embodiments of the present application. Other variations may also fall within the scope of the present application. Therefore, as an example and not a limitation, the alternative configurations of the embodiments of the present application may be considered to be consistent with the teachings of the present application. Accordingly, the embodiments of the present application are not limited to the embodiments explicitly introduced and described in the present application.

Claims

1. A balancer, characterized in that: include: A housing, wherein a plurality of mounting structures are arranged on the circumference of the housing; a central axis, the central axis being disposed in the housing; The second end of the central axis protrudes from the upper surface of the housing; A rotating drum, the rotating drum is located in the outer shell and sleeved on the central axis, and can rotate around the central axis; a coil spring is arranged in the rotating drum, the coil spring is arranged around the central axis, the inner end of the coil spring is fixedly connected to the central axis, and the outer end of the coil spring is fixed inside the rotating drum; A take-up wire, one end of which is fixedly connected to the drum and wound around the drum in a first direction, and the other end of which passes through the housing and is located outside the housing. When the other end of the take-up wire is pulled, the drum can be rotated; The fixing plate is used to fix the shell, and the shell is fixedly mounted on the fixing plate through the plurality of mounting structures.

2. The balancer according to claim 1, characterized in that: The fixing plate includes a first fixing portion and a second fixing portion, the housing is fixed to the first fixing portion, the second fixing portion is provided with a limiting structure, and the take-up wire passes through the limiting structure and is limited by the limiting structure.

3. The balancer according to claim 2, characterized in that: The plurality of mounting structures are provided with a first mounting hole, the first fixing portion is provided with a second mounting hole corresponding to the first mounting hole, and the housing is fixedly mounted on the first fixing portion by connecting the first mounting hole and the second mounting hole by bolts.

4. The balancer according to claim 1, characterized in that: An adjustment sheet is provided at the second end of the central shaft, and the adjustment sheet is sleeved on the second end of the central shaft and can drive the central shaft to rotate; a ratchet structure is provided on the upper surface of the shell, and the ratchet structure cooperates with the adjustment sheet to tighten or loosen the coil spring.

5. The balancer according to claim 4, characterized in that: A plurality of limiting openings are arranged on the circumference of the adjustment sheet, the pawl structure comprises a fixing portion and a limiting portion, the pawl structure is fixedly arranged on the upper surface of the housing through the fixing portion, and the pawl structure is clamped in the limiting opening by the limiting portion to limit the adjustment sheet.

6. The balancer according to claim 5, characterized in that: Each of the limiting openings comprises two symmetrical clamping points, and the limiting portion is clamped at the clamping points to limit the adjustment sheet.

7. The balancer according to claim 1, characterized in that: The fixing plate is directly fixed on the equipment on which the balancer needs to be installed.

8. The balancer according to claim 4, characterized in that: A nut is disposed at the second end of the central shaft, and the nut limits the adjustment plate in the axial direction of the central shaft.

9. The balancer according to claim 8, characterized in that: The nut and the adjusting piece are integrally formed, and the nut drives the central shaft to rotate.

10. A charging pile, characterized in that: include: Charging pile body; The balancer according to any one of claims 1 to 9, mounted on the top of the housing of the charging pile body; A cable clamp is connected to the retracting cable of the balancer and fixes and clamps the charging cable of the charging pile.

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