Charger

Abstract

This charger comprises: a wire; a pulley guiding the wire; a pulley guide in which the pulley is rotatably disposed; a first weight disposed on the pulley guide; a weight guide; a second weight accommodated in the weight guide and lifted by the pulley guide and / or the first weight; and a damper which is disposed on the weight guide, and on which the second weight is seated when the second weight descends.

Description

charger

[0001] The present invention relates to a charger.

[0002] A charger is a device used to charge a battery.

[0003] An example of a charger may be an electric vehicle charger that charges a vehicle such as an electric vehicle, and electrical energy is supplied to the battery of the electric vehicle by connecting a charging connector provided at the end of a charging cable to a connection inlet installed in the electric vehicle.

[0004] The charger includes a power module to which a charging cable is connected and a charger body that forms a space in which the power module is accommodated.

[0005] The user can connect the connector (charging gun or plug) provided on the charging cable to the vehicle after removing it from the charger body.

[0006] U.S. Patent Publication No. US 11,260,767 B2 (patent dated May 01, 2022) discloses a cable recovery system including a wire connected to a charging cable, the cable recovery system including an enclosure having an opening formed therein, a movable pulley movably received in the enclosure, a movable counterweight connected to the movable pulley, a ring fixed to the interior of the enclosure, a pulley disposed around the opening of the enclosure, and a wire having one end connected to the ring and the other end connected to the cable, the wire elevating the movable pulley.

[0007] The present embodiment provides a charger in which the restoring force for recovering a wire increases as the length of the wire drawn out increases.

[0008] The present embodiment provides a charger that minimizes damage or breakage that may occur when the wire is restored.

[0009] A charger according to the present embodiment includes a wire; a pulley for guiding the wire; a pulley guide in which the pulley is rotatably arranged; a first weight arranged in the pulley guide; a weight guide; a second weight accommodated inside the weight guide and raised by at least one of the pulley guide and the first weight; and a damper arranged in the weight guide and on which the second weight is settled when the second weight is lowered.

[0010] The second weight may have a slope formed that is mounted on the damper.

[0011] The weight guide may include a damper mounting portion on which a damper is mounted.

[0012] The damper mounting portion can be formed to be inclined at the same angle as the slope portion.

[0013] The damper may include an upper damper and a lower damper mounted on a damper mounting portion.

[0014] A second weight may be provided in multiples.

[0015] Dampers can be individually placed for each second weight.

[0016] The secondary weights can be heavier the further up they are positioned.

[0017] The positions of the multiple second weights in the slope section may be different.

[0018] The slope of the second weight located on the upper side among the plurality of second weights may overlap in the vertical direction with the slope of the second weight located on the lower side among the plurality of second weights.

[0019] The damper located on the upper side and the damper located on the lower side may be non-overlapping in the vertical direction.

[0020] A plurality of damper mounting parts may be formed, and the heights of the plurality of damper mounting parts may be different from each other.

[0021] The weight guide may further include a guide portion that guides a second weight.

[0022] The guide section can connect a pair of adjacent damper mounting sections among a plurality of damper mounting sections.

[0023] The damper may include an upper damper and a lower damper mounted on a damper mounting portion.

[0024] The top height of the upper damper may be higher than the top height of the lower damper.

[0025] The second weight may have a wire penetration hole formed therein through which a wire passes.

[0026] The wire pass-through hole may be larger than the pulley guide.

[0027] The charger may further include a guide shaft extending through the weight guide.

[0028] A guide hole guided to the guide axis may be formed in the second weight.

[0029] A weight penetration hole through which a first weight passes may be formed on the bottom surface of the guide.

[0030] The damper may include a roller with which the second weight is in contact; a damper guide in which the roller is rotatably arranged; a damper housing in which the damper guide is arranged; and a spring arranged in the damper housing to support the damper guide.

[0031] According to this embodiment, as the wire is pulled outward, the restoring force gradually increases, so that the charging cable can be quickly recovered, and as the wire is recovered, the restoring force gradually decreases, so that damage that may occur when recovering the charging cable can be minimized.

[0032] In addition, when the second weight falls, the second weight comes into contact with the damper, and the spring installed in the damper can absorb the shock, thereby minimizing damage or breakage of the weight guide and the second weight.

[0033] Additionally, the shock or vibration generated when the second weight is dropped is absorbed by the spring, thereby minimizing the shock or vibration transmitted to the charger body.

[0034] Figure 1 is a perspective view of a charger according to the present embodiment;

[0035] Figure 2 is a perspective view showing a wire device according to the present embodiment;

[0036] Figure 3 is a perspective view showing a pulley and a pulley bracket according to the present embodiment;

[0037] Figure 4 is a diagram showing the process when a wire is gradually pulled according to the present embodiment.

[0038] Fig. 5 is a perspective view showing a damper according to the present embodiment;

[0039] FIG. 6 is a diagram illustrating a plurality of dampers and a second weight according to the present embodiment.

[0040] Hereinafter, specific embodiments of the present invention will be described in detail with drawings.

[0041] FIG. 1 is a perspective view of a charger according to the present embodiment, FIG. 2 is a perspective view illustrating a wire device according to the present embodiment, FIG. 3 is a perspective view illustrating a pulley and a pulley bracket according to the present embodiment, and FIG. 4 is a diagram illustrating a process when a wire according to the present embodiment is gradually pulled.

[0042] The charger may include a charging cable (1), a cable cover (2), and a wire device (3).

[0043] The charger may further include a power module (not shown) to which a charging cable (1) is connected, and a charger body (11) that accommodates the power module.

[0044] The charger body (11) can form the exterior of the charger. A space (S1) can be formed inside the charger body (11).

[0045] One end of the charging cable (1) can be connected to a power module inside the charger body (11), and the other end of the charging cable (1) can be provided with a connector (12, charging gun or plug) that is connected to a vehicle such as an electric vehicle.

[0046] The charging cable (1) can pass through a cable penetration formed in the charger body (11) between one end and the other end.

[0047] A connector holder (13) on which a connector (12) is mounted can be placed on the charger body (11).

[0048] A display (14) that displays various information related to charging can be placed on the charger body (11).

[0049] A cable cover (2) can be placed on the charging cable (1).

[0050] A cable cover (2) can be placed between one end of the charging cable (1) and the connector (12). The cable cover (2) can be placed to wrap a portion of the charging cable (1).

[0051] The cable cover (2) can be located on the outside of the charger body (11).

[0052] The charging cable (1) can be retracted to the retract position (initial position) or extended from the retract position to the vehicle.

[0053] The wire device (3) may include a wire (30).

[0054] An example of a wire device (3) may include a wire (30) connected to a cable cover (2).

[0055] Another example of a wire device (3) may include a wire (30) connected to a charging cable (1) without including a cable cover (2).

[0056] Hereinafter, the wire (30) is described as being connected to the cable cover (2), but it is also possible for the wire (30) to be connected to the charging cable (1) via a ring or the like without being connected to the cable cover (2).

[0057] One end of the wire (30) can be placed in the charger body (1), and the other end of the wire (30) can be connected to the cable cover (2).

[0058] The wire device (3) can pull the wire (30) by the weight and help the charging cable (1) to be recovered to the recovery position.

[0059] The recovery position may be a position where the cable cover (2) is close to the charger body (11), as shown in Fig. 1.

[0060] The wire device (3) may be placed so as to be accommodated in a space (S1) formed inside the charger body (1) or may be placed on the outer surface of the charger body (1).

[0061] When the wire device (3) is accommodated in the charger body (1), the appearance of the charger can be improved and damage or breakage of the wire device (3) can be minimized.

[0062] Hereinafter, the wire device (3) is described as an example in which it is accommodated in the charger body (1), but the wire device (3) is not limited to being accommodated in the charger body (1), and the wire device (3) may be located outside the charger body (1).

[0063] A wire hole through which a wire (30) passes can be formed in the charger body (11).

[0064] The wire hole can be formed at the top of the charger body (11).

[0065] The wire (30) can pull the charger cover (2) to the upper part of the charger body (1).

[0066] Among the wires (30), the portion located inside the charger body (1) may be an inner wire (31) (32). Among the wires (30), the portion located outside the charger body (1) may be an outer wire (33).

[0067] At least one wire guide (15) for guiding a wire (30) can be placed in the space of the charger body (1).

[0068] The wire guide (15) can be placed on the inner upper part of the charger body (1).

[0069] An example of a wire guide (15) may include at least one pulley. The wire guide (15) may include a plurality of pulleys. The plurality of pulleys may be spaced apart. The plurality of pulleys may be spaced apart horizontally.

[0070] The inner wire (31)(32) may include an upper wire (31, see Fig. 1) extended approximately horizontally or inclined by a wire guide (15).

[0071] The upper wire (31) can be directed toward the wire hole formed in the charger body (11).

[0072] The inner wire (31)(32) may include a lower wire (32, see FIG. 1) bent into a U shape by a wire device (30).

[0073] One end of the lower wire (32) can be connected to the upper part of the charger body (1), and the upper wire (31) can be bent at the upper end of the lower wire (32).

[0074] As shown in Fig. 2, the wire device (3) may include a pulley (40) that guides the wire (30), a pulley guide (50) in which the pulley (40) is rotatably arranged, and a first weight (60) arranged on the pulley guide (50).

[0075] The pulley (40) can be raised by the wire (30).

[0076] The outer circumference of the pulley (40) can be formed with a groove (41) that can accommodate a portion of the wire (30).

[0077] The pulley (40) can be rotatably arranged on the pulley guide (50) as shown in FIGS. 2 and 3.

[0078] A support shaft (42) may be arranged on the pulley (40). The support shaft (42) may be arranged to protrude from the pulley (40). The support shaft (42) may be arranged horizontally.

[0079] The pulley (40) can be raised by the wire (30) and lowered by the pulley guide (50), the first weight (60), and the second weight (80).

[0080] The pulley guide (50) may include a first weight mounter (51) on which a first weight (60) is mounted.

[0081] The pulley guide (50) may further include a pair of supporters (52)(53) erected on the first weight mounter (51).

[0082] A pair of supporters (52)(53) can support the support shaft (42). The pair of supporters (52)(53) can be spaced apart horizontally.

[0083] The first weight (60) may be a movable counterweight attached to the pulley guide (50). The size of the first weight (60) may be larger than the size of the pulley guide (50).

[0084] The first weight (60) can be placed on the bottom surface of the first weight mounter (51). The first weight (60) can be fastened to the first weight mounter (51) using a fastening member such as a screw.

[0085] The first weight (60) can be raised together with the pulley guide (50) and lowered together with the pulley guide (50).

[0086] The first weight (60) may be a lower weight placed below the pulley guide (50). The first weight (60) may be a weight that pulls the pulley guide (50) downward regardless of its height.

[0087] The wire device (3) may include a weight guide (70), a second weight (80) and a damper (90).

[0088] The weight guide (70) can guide the second weight (80). The weight guide (70) can be arranged lengthwise in the vertical direction (Z) inside the charger body (11).

[0089] An inner space (S2) can be formed in the weight guide (70).

[0090] A weight penetration hole (S3) through which a first weight (80) passes may be formed on the bottom surface of the weight guide (70). As illustrated in FIG. 4, the first weight (80) may pass through the weight penetration hole (S3) and descend to the lower side of the weight guide (70). The first weight (80) may pass through the weight penetration hole (S3) and ascend to the inner space (S2) of the weight guide (70).

[0091] When the first weight (80) is raised, it can be surrounded by the weight guide (70) and protected by the weight guide (70).

[0092] A damper mounting portion (71) on which a damper (90) is mounted may be formed on the weight guide (70). A guide portion (72) for guiding a second weight (80) may be formed on the weight guide (70).

[0093] The damper mounting portion (71) may be formed to be inclined. The damper mounting portion (71) may be formed to be inclined downward from one end of the damper mounting portion (71) to the other end of the damper mounting portion (71). The damper mounting portion (71) may have an obtuse angle of inclination with respect to the guide portion (72). The damper mounting portion (71) may be formed to be inclined at an angle exceeding 90° with respect to the guide portion (72).

[0094] The guide portion (72) may be formed in a bent shape at the damper mounting portion (71). The guide portion (72) may be vertical. The second weight (80) may be guided by the guide portion (72) and may be guided up and down while maintaining a horizontal state.

[0095] When a plurality of second weights (80) are provided, each of the damper mounting portion (71) and the guide portion (72) can be formed in plurality.

[0096] The guide part (72) can connect a pair of adjacent damper mounting parts (71) among multiple damper mounting parts.

[0097] A plurality of guide parts (72) can be formed.

[0098] The weight guide (70) can be formed in a step shape with multiple damper mounting portions (71) and multiple guide portions (72).

[0099] The second weight (80) can be accommodated in the inner space (S) and can be raised or lowered by being guided by the weight guide (70).

[0100] The second weight (80) can be accommodated inside the weight guide (70).

[0101] The second weight (80) may be an upper weight located above the first weight (60). The second weight (80) may be a variable weight that can be in contact with or separated from the first weight (60).

[0102] The second weight (80) can be raised by at least one of the pulley guide (50) and the first weight (60).

[0103] The second weight (80) can come into contact with the pulley guide (50) when the pulley guide (50) rises, and can be raised by the pulley guide (50).

[0104] The second weight (80) can come into contact with the first weight (60) when the first weight (60) rises, and can be raised by the first weight (60).

[0105] Hereinafter, the second weight (80) is described as being in contact with the first weight (60) and being raised by the first weight (60), but the second weight (80) is not limited to being in contact with the first weight (60), and it is also possible for the second weight (80) to be in contact with the pulley guide (50) and be raised by the pulley guide (50).

[0106] A damper (90) may be placed on the weight guide (70). The damper (90) may be in contact with or separated from the second weight (80). When the second weight (80) is lowered, the second weight (80) may be in contact with the damper (90), and when the second weight (80) is raised, the second weight (80) may be separated from the damper (90).

[0107] The connector (12) of the charging cable (1) can be pulled out from the connector holder (13) by the user and pulled close to the vehicle by the user. The cable cover (2) can be moved away from the wire hole, and some of the inner wires (31) and (32) among the wires (30) can be pulled out to the outside of the charger body (1) through the wire hole and become outer wires (33).

[0108] As the inner wire (31) (32) among the wires (30) is gradually pulled out, a force can be applied to the wire (30) to pull the pulley (40) upward, the pulley guide (50) can be raised together with the pulley (40), and the first weight (60) can come into contact with the second weight (80) accommodated in the space (S) to raise the second weight (80).

[0109] The weight of the pulley (40), the weight of the pulley guide (50), the weight of the first weight (60), and the weight of the second weight (80) can all act on the wire (30), and a pulling force (i.e., a restoring force) that pulls the cable cover (2) into the wire hole can be acted on the wire (30).

[0110] The inner wire (32) can recover the cable cover (2) to the recovery position by pulling force (restoring force).

[0111] Meanwhile, when the user moves the connector (12) closer to the charger body (1) or reduces the external force applied to the charging cable (1), the lower end of the lower wire (32) can be lowered by the weight of the pulley (40), the weight of the pulley guide (50), the weight of the first weight (60), and the weight of the second weight (80), and the second weight (80) can be settled on the damper (70) during the lowering, and the second weight (80) can be separated from the first weight (60).

[0112] When the second weight (80) is placed on the damper (90) and separated from the first weight (60), the weight of the pulley (40), the weight of the pulley guide (50), and the weight of the first weight (60) can act on the inner wire (32), and the restoring force acting on the inner wire (32) can be reduced.

[0113] A slope (81) that is mounted on a damper (90) can be formed in the second weight (80).

[0114] The slope (81) may be formed close to the circumference (82) among the central and circumference portions of the second weight (80) or on a part of the circumference (82).

[0115] The slope portion (81) can be inclined toward the downward slope direction.

[0116] A wire penetration hole (83) through which a wire (30) passes may be formed in the second weight (80).

[0117] The size of the wire penetration hole (83) may be larger than the size of the pulley guide (50). When the pulley guide (50) rises, the pulley guide (50) can be inserted into the wire penetration hole (83), and the first weight (60) placed on the pulley guide (50) can come into contact with the second weight (80).

[0118] The damper mounting portion (71) can be formed to be inclined at the same angle as the slope portion (81). The damper mounting portion (71) can be inclined toward the upward slope direction.

[0119] The damper (90) mounted on the damper mounting portion (71) can be mounted at an angle, and the damper (90) can be positioned at an angle with respect to the horizontal plane.

[0120] The damper (90) arranged in the damper mounting portion (71) may include an upper damper (91) having a high upper height and a lower damper (92) having a low upper height. The upper damper (91) and the lower damper (92) may be mounted together in one damper mounting portion. The upper damper (91) and the lower damper (92) may be arranged in a row in the damper mounting portion (71).

[0121] The upper damper (91) and the lower damper (92) may have the same structure, and their upper heights may be different from each other. The upper height of the upper damper (91) may be higher than the upper height of the lower damper (92).

[0122] A plurality of damper mounting portions (71) can be formed in the weight guide (70), a plurality of second weights (80) can be provided, and a plurality of dampers (90) can be provided.

[0123] The multiple damper mounting parts (71) may have different heights.

[0124] The dampers (90) can be placed separately for each second weight (80).

[0125] The multiple dampers (90) may have different heights.

[0126] When the upper height of the first weight (60) is lower than the lower height of the weight guide (70), the plurality of weights (80) can be spaced apart from each other in the vertical direction (Z).

[0127] When the first weight (60) is raised, a plurality of second weights (80) can be sequentially stacked on the first weight (60), and the number of second weights (80) stacked on the first weight (60) can gradually increase.

[0128] As the number of second weights (80) stacked on the first weight (60) increases, the restoring force (pulling force) of the inner wire (32) can increase.

[0129] The weight of each of the plurality of second weights (80) may be different. The second weights (80) may be heavier as they are positioned higher. The second weights (80) may be lighter as they are positioned lower.

[0130] Hereinafter, an example in which a wire device (3) includes five dampers (90A)(90B)(90C)(90D)(90E) and five weights (80A)(80B)(80C)(80D)(80E) will be described.

[0131] The five dampers (90A) (90B) (90C) (90D) (90E) may include a first damper (90A) having a first height (H1), a second damper (90B) having a second height (H2) higher than the first height (H1), a third damper (90C) having a third height (H3) higher than the second height (H2), a fourth damper (90D) having a fourth height (H4) higher than the third height (H3), and a fifth damper (90E) having a fifth height (H5) higher than the fourth height (H4).

[0132] The five weights (80A) (80B) (80C) (80D) (80E) may include a first variable weight (80A) mounted on or spaced apart from the first damper (90A), a second variable weight (80B) mounted on or spaced apart from the second damper (90B), a third variable weight (80C) mounted on or spaced apart from the third damper (90C), a fourth variable weight (80D) mounted on or spaced apart from the fourth damper (90D), and a fifth variable weight (80E) mounted on or spaced apart from the fifth damper (90E).

[0133] The fifth variable weight (80E) may be heavier than the fourth variable weight (80D), the fourth variable weight (80D) may be heavier than the third variable weight (80C), the third variable weight (80C) may be heavier than the second variable weight (80B), and the second variable weight (80B) may be heavier than the first variable weight (80A).

[0134] Hereinafter, the common configuration of five weights (80A) (80B) (80C) (80D) (80E) is described as weight (80), and the common configuration of five dampers (90A) (90B) (90C) (90D) (90E) is described as damper (90).

[0135] The positions of the slope portion (81) of the plurality of second weights (80) may be different.

[0136] The slope (81) formed on one of the second weights (80) (for example, the first variable weight (80A)) may be closer to the left end of the weight guide (70) among the left and right ends.

[0137] The slope (81) formed on another second weight (e.g., the fifth variable weight (80E)) among the plurality of second weights (80) may be closer to the right end among the left and right ends of the weight guide (70).

[0138] The slope (81) of the second weight located on the upper side may not overlap with the second weight located on the lower side in the vertical direction (Z). For example, the slope (81) of the second variable weight (80B) may not overlap with the first variable weight (80A) in the vertical direction (Z).

[0139] The slope portion (81) of the plurality of second weights (80) may not overlap in the vertical direction (Z).

[0140] The damper located on the upper side and the damper located on the lower side may not overlap in the vertical direction (Z). For example, the second damper (90B) may not overlap the first damper (90A) in the vertical direction (Z).

[0141] The wire device (3) may further include a guide shaft (100) penetrating the weight guide (70).

[0142] The guide shaft (100) can be arranged vertically inside the cabinet body (11).

[0143] The guide shaft (100) can guide the first weight (60) and the second weight (80).

[0144] A guide hole guided to a guide axis (100) may be formed in the first weight (60). The first weight (60) may be raised and lowered along the guide axis (100).

[0145] A guide hole (84) guided by a guide axis (100) may be formed in the second weight (80). The second weight (80) may be raised and lowered along the guide axis (100).

[0146] The guide hole (84) of the second weight (80) can face the guide hole of the first weight (60) in the vertical direction (Z).

[0147] A plurality of guide axes (100) may be provided. The plurality of guide axes (100) may be spaced apart in the horizontal direction.

[0148] When a plurality of guide axes (100) are arranged, a plurality of guide holes of the first weight (60) and a plurality of guide holes (84) of the second weight (80) can be formed, and arbitrary rotation of the first weight (60) or the second weight (80) can be restricted.

[0149] The wire device (3) may further include an elastic member (110) placed at the bottom of the first weight (60).

[0150] The elastic member (110) may include an elastic body (112) connected to the lower portion of the first weight (60).

[0151] An example of the elastic body (112) may be an elastic rubber such as ethylene propylene diene monomer (EDPM).

[0152] The elastic member (110) may include a spring (114). The spring (114) may be connected to the elastic body (112) or the first weight (60).

[0153] An example of a spring (114) may be a coil spring.

[0154] The elastic member (110) can come into contact with the stopper (15, see FIG. 1) placed on the charger body (1) when the first weight (60) is lowered, and can minimize damage that may occur when the first weight (60) is lowered rapidly.

[0155] FIG. 5 is a perspective view illustrating a damper according to the present embodiment, and FIG. 6 is a view illustrating a plurality of dampers and a second weight according to the present embodiment.

[0156] The damper (90) may include a roller (93) with which the second weight (80) comes into contact, a damper guide (94) in which the roller (93) is rotatably arranged, a damper housing (95) in which the damper guide (94) is arranged, and a spring (96) arranged in the damper housing (95) to support the damper guide (94).

[0157] A support shaft (97) that is rotatably supported on a damper guide (94) may be arranged on the roller (93).

[0158] The roller (93) may be an idle roller.

[0159] Each of the upper damper (91) and the lower damper (92) illustrated in FIG. 2 may include a roller (93), a damper guide (94), a damper housing (95), and a spring (86).

[0160] When the second weight (80) falls, the slope (81) of the second weight (80) can first settle on the roller (93) and slide along the roller (93). The roller (93) can help the second weight (80) to smoothly settle on the damper (90) as it rotates.

[0161] The damper guide (94) can compress the spring (96) by the weight of the second weight (80), and the damper (90) can absorb the shock caused by the dropping of the second weight (80).

[0162] The slope (81) of the second weight (80) can be first placed on the roller (93) of the upper roller (91) and then placed on the lower roller (92) along the roller (93) of the upper roller (91).

[0163] The slope (81) of the second weight (80) can also be simultaneously placed on the roller (93) of the upper roller (91) and the roller (93) of the lower roller (92).

[0164] The above description is merely an example of the technical idea of ​​the present invention, and those skilled in the art will appreciate that various modifications and variations can be made without departing from the essential characteristics of the present invention.

[0165] Accordingly, the embodiments disclosed in the present invention are not intended to limit the technical idea of ​​the present invention but to explain it, and the scope of the technical idea of ​​the present invention is not limited by these embodiments.

[0166] The scope of protection of the present invention should be interpreted by the claims below, and all technical ideas within the scope equivalent thereto should be interpreted as being included in the scope of the rights of the present invention.

Claims

1. Wire; A pulley guiding the above wire; A pulley guide in which the above pulley is rotatably arranged; A first weight arranged on the above pulley guide; Weight Guide; A second weight accommodated inside the weight guide and raised by at least one of the pulley guide and the first weight; and A charger including a damper arranged on the weight guide and on which the second weight is settled when the second weight is lowered.

2. In paragraph 1, A charger having a slope formed on the second weight to be mounted on the damper.

3. In paragraph 2, The above weight guide includes a damper mounting portion on which the damper is mounted, A charger in which the above damper mounting portion is formed to be inclined at the same angle as the above slope portion.

4. In paragraph 1, The above second weight is provided in multiples, The above dampers are chargers respectively arranged for each of the second weights.

5. In paragraph 4, The higher the secondary weight is located, the heavier the charger.

6. In paragraph 4, The second weight has a slope formed that is mounted on the damper. Multiple second weight chargers with different positions of the gradient section.

7. In paragraph 6, A charger in which the slope of a second weight located at the upper side among a plurality of second weights does not overlap in the vertical direction with the slope of a second weight located at the lower side among a plurality of second weights.

8. In paragraph 4, A charger in which the dampers located on the upper side and the dampers located on the lower side do not overlap in the vertical direction.

9. In paragraph 4, The above weight guide includes a damper mounting portion on which the damper is mounted, A charger in which the above damper mounting portions are formed in multiple numbers, and the heights of the multiple damper mounting portions are different from each other.

10. In paragraph 9, The above weight guide further includes a guide portion that guides the second weight, The above guide part connects a pair of adjacent damper mounting parts among multiple damper mounting parts. charger.

11. In paragraph 1, The above damper Including an upper damper and a lower damper mounted on the above damper mounting portion, A charger in which the upper height of the upper damper is higher than the upper height of the lower damper.

12. In paragraph 1, A charger having a wire penetration hole formed in the second weight through which the wire passes.

13. In paragraph 1, The above wire penetration hole is larger than the above pulley guide charger.

14. In paragraph 1, Further comprising a guide shaft penetrating the above weight guide, A charger in which a guide hole guided by the guide axis is formed in the second weight.

15. In paragraph 1, A charger having a weight penetration hole formed on the bottom surface of the above guide through which the first weight passes.

16. In paragraph 1, The above damper A roller with which the second weight is in contact; A damper guide in which the above roller is rotatably arranged; A damper housing in which the above damper guide is arranged; and A charger including a spring arranged in the damper housing and supporting the damper guide.

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