Tow device for a zip fastener

Abstract

The present disclosure relates to a pulling device for a zipper, comprising: a pulling cable for connection with a zipper head of the zipper; a guide element for guiding the pulling cable to adjust the orientation of the pulling cable; and a winding device for winding the pulling cable to pull the zipper head. The pulling device is configured to have a portion of the pulling cable located between the zipper head and the guide element in a substantially parallel orientation with a segment of a zipper extension path through which the zipper head is about to travel, or to have an orientation deviation between the two less than a predetermined value, during the pulling process. By means of the guide element, the pulling device of the present disclosure can adaptively adjust the orientation of the pulling cable according to the orientation changes of each segment of the zipper extension path of the zipper. This not only helps the zipper to be easily pulled up, but also can prevent the zipper from being damaged at the location where the orientation of the zipper extension path changes.

Description

TECHNICAL FIELD

[0001] The present disclosure relates generally to the field of installation of automobile seat cover. More particularly, the present disclosure relates to a pulling device for a zipper, which can install an automobile seat cover on an automobile seat by pulling a zipper provided on the automobile seat cover. BACKGROUND

[0002] In the field of automobiles, an automobile seat cover is usually detachably installed on an automobile seat. In order to facilitate the installation and removal of the automobile seat cover, a zipper is usually sewn on the automobile seat cover. For example, as shown in Figure 1a , a back of an automobile seat cover 1 can be sewn with a zipper 2. By pulling or unzipping the zipper 2, the automobile seat cover 1 can be installed on or removed from the automobile seat. However, since the size of the automobile seat cover is usually very close to that of the automobile seat, the transverse tension between two parts 3 of the zipper is usually very large after the automobile seat cover 1 is put on the automobile seat, which makes it very difficult to pull the zipper 2 by hand.

[0003] In the prior art, a rope or the like is usually provided on a zipper head 4 (as shown in Figure 1b ) of the zipper 2, and then the rope is pulled by a pulling device to pull the zipper 2, thereby completing the installation of the automobile seat cover 1. However, the current pulling device has certain defects. On the one hand, the sewing path of the zipper on the automobile seat cover produced by each automobile manufacturer is different; on the other hand, since the automobile seat itself has curved lines, the sewing path or the extension path of the zipper on the automobile seat cover 1 also presents a curved shape, thereby causing the zipper not to be in a straight line (as shown in Figure 1a , the zipper 2 is arranged in a curve on the automobile seat cover 1). These factors make it difficult to pull the zipper 2 even if the existing pulling device is used. In some cases, the pulling device can also easily cause damage or breakage of the zipper 2 at the position where the orientation of the extension path of the zipper changes.

[0004] Further, for aesthetic reasons, more and more automobile seat covers begin to use invisible zippers. Compared with traditional zippers, the use of invisible zippers increases the difficulty of installing the automobile seat cover. Therefore, there is a need to improve the existing pulling device. SUMMARY

[0005] One of the purposes of the present disclosure is to overcome at least one or more of the above problems or other problems existing in the prior art.

[0006] The present disclosure provides a pulling device for a zipper. The pulling device comprises a pulling cable for connecting with a zipper head of a zipper; a guiding element for guiding the pulling cable to adjust an orientation of the pulling cable; and a winding device for winding the pulling cable to pull the zipper head; wherein the pulling device is configured to bring a portion of the pulling cable between the zipper head and the guiding element into a substantially parallel orientation with a section of a zipper extension path through which the zipper head is about to travel, or to bring an orientation deviation between the portion of the pulling cable between the zipper head and the guiding element and the section of the zipper extension path through which the zipper head is about to travel to be less than a predetermined value, by means of the guiding element during pulling.

[0007] By means of the guiding element, the pulling device according to the present disclosure can adaptively adjust the orientation of the pulling cable according to the orientation changes of the sections of the zipper extension path of the zipper. This not only helps the zipper to be easily pulled up, but also can prevent the zipper from being damaged at the positions where the orientation of the zipper extension path changes.

[0008] According to one embodiment of the present disclosure, the pulling device comprises a plurality of the guiding elements, each guiding element being used to guide the pulling cable to a different orientation from the other guiding elements.

[0009] According to one embodiment of the present disclosure, the pulling device is provided with only one guiding element, which is capable of one or more of the following movements: horizontal movement along a horizontal direction, rotational movement about a vertical axis, vertical movement along a vertical direction, and pitching movement about a horizontal pivot.

[0010] According to one embodiment of the present disclosure, the pulling device comprises an actuator for actuating the winding device.

[0011] According to one embodiment of the present disclosure, the pulling device comprises an actuator controller for controlling the actuation of the actuator.

[0012] According to one embodiment of the present disclosure, the actuator controller is a foot pedal or a remote controller.

[0013] According to one embodiment of the present disclosure, the actuator is a motor.

[0014] According to one embodiment of the present disclosure, the actuator is a stepper motor or a servo motor.

[0015] According to one embodiment of the present disclosure, the pulling device further comprises an operation table for placing or positioning an operation article.

[0016] According to one embodiment of the present disclosure, the traction device comprises a clamping element for clamping the handling article on the handling table.

[0017] According to one embodiment of the present disclosure, the guiding element comprises a guide wheel around which the traction cable extends.

[0018] According to one embodiment of the present disclosure, the guiding element is movably mounted on a guide rail such that the guiding element is movable along an extension direction of the guide rail.

[0019] According to one embodiment of the present disclosure, the guiding element comprises a vertically extending base and a guiding portion on the base, the guiding portion being configured in an "L" shape and comprising a vertically extending portion and a horizontally extending portion.

[0020] According to one embodiment of the present disclosure, the base comprises a rotating member such that the guiding portion is rotatable around a central axis of the base.

[0021] According to one embodiment of the present disclosure, the base comprises a rotating motor to drive the guiding portion to rotate around a central axis of the base.

[0022] According to one embodiment of the present disclosure, the vertically extending portion and the horizontally extending portion are integrally formed.

[0023] According to one embodiment of the present disclosure, the vertically extending portion and the horizontally extending portion are pivotally connected such that the horizontally extending portion is pivotable around a pivot axis relative to the vertically extending portion.

[0024] According to one embodiment of the present disclosure, the winding device is arranged within a winding assembly, the winding assembly comprising a limiting element to limit the winding of the traction cable on the winding device without disengaging from the range of the winding device.

[0025] According to one embodiment of the present disclosure, the limiting element comprises a support plate provided with an elongated slot and a movable element above the support plate, the movable element comprising a central hole, the traction cable extending through the central hole of the movable element and the elongated slot of the support plate.

[0026] According to one embodiment of the present disclosure, the traction device further comprises a control device for controlling the traction device.

[0027] It is to be noted that aspects of the disclosure described with respect to one embodiment can be incorporated into other different embodiments, although not specifically described with respect to the other different embodiments. In other words, all embodiments and / or features of any embodiment can be combined in any manner and / or combination, as long as they are not mutually contradictory. BRIEF DESCRIPTION OF DRAWINGS

[0028] Reference will now be made to the drawings to explain the exemplary embodiments. In the drawings:

[0029] Figure 1a A car seat cover adapted to be fitted on a car seat cushion is schematically shown;

[0030] Figure 1b A zipper adapted to be sewn on a car seat cover is schematically shown;

[0031] Figure 2a A pulling device for a zipper according to one embodiment of the disclosure is schematically shown;

[0032] Figure 2b A pulling device adapted to be sewn on a car seat cover and adapted to pull a Figure 2a zipper shown being pulled by the pulling device according to one embodiment of the disclosure is schematically shown;

[0033] Figure 2c A guiding element adapted to be fitted on the pulling device shown in Figure 2a according to one embodiment of the disclosure is schematically shown;

[0034] Figure 3a A pulling device fitted with a plurality of guiding elements shown in Figure 3b respectively in front view and side view and showing the pulling device performing pulling in different zipper extension path segments is schematically shown;

[0035] Figure 4 A pulling device fitted with a plurality of guiding elements shown in Figure 2c according to one embodiment of the disclosure is schematically shown;

[0036] Figure 5 is a front view of a pulling device for a zipper according to another embodiment of the disclosure;

[0037] Figure 6 is a top view of the pulling device for a zipper shown in Figure 5 ;

[0038] Figure 7 is a side view of the pulling device for a zipper shown in Figure 5 ;

[0039] Figure 8 a specific structure of a guide element for a traction cable is shown according to another embodiment of the present disclosure;

[0040] Figure 9 a clamping element according to one embodiment of the present disclosure is shown;

[0041] Figure 10 a winding assembly according to one embodiment of the present disclosure is shown.

[0042] It should be understood that like reference numerals in all figures indicate like elements. In the figures, the dimensions of certain features can be exaggerated for clarity. DETAILED DESCRIPTION

[0043] Embodiments of the present disclosure will be described below with reference to the accompanying drawings. It should be understood that the present disclosure can be presented in many different forms and is not limited to the embodiments described below. It should also be understood that the embodiments disclosed herein can be combined in various ways to provide more additional embodiments. In all figures, like reference numerals indicate the same or functionally similar elements.

[0044] It should be understood that the language used in the specification is only for describing specific embodiments and is not intended to limit the present disclosure. Unless otherwise defined, all terms used in the specification have the meanings commonly understood by those skilled in the art. Well-known functions or structures can not be described in detail for the sake of brevity or clarity.

[0045] As used in the specification, the singular forms "a", "an" and "the" include plural forms unless the context clearly dictates otherwise. As used in the specification, the terms "comprises", "comprising", and "including" indicate the presence of the stated features but do not exclude one or more additional features. As used in the specification, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0046] In the specification, when it is said that an element is "on", "attached to", "connected to", "coupled to", or "contacting" another element, the element can be directly on, attached to, connected to, coupled to, or contacting the other element, or there can be intervening elements.

[0047] In the specification, the terms "first", "second", "third", etc. are used only for convenience of description and are not intended to limit. Any technical features represented by "first", "second", "third", etc. are interchangeable.

[0048] In the description, spatially relative terms, such as "upper," "lower," "front," "back," "top," "bottom," and the like, can be used for the purpose of explaining the orientation of one feature to another feature in the drawings. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation, in addition to the orientations depicted in the drawings. For example, if a device described is turned over in the drawings, a feature that is described as being on the "lower" side of other feature would then be oriented upward, rather than downward. The device can be oriented in any direction, and the relative spatial terms can be interpreted accordingly.

[0049] Referring to Figure 2a A pulling device 10 for a zipper according to one embodiment of the present disclosure is shown. The pulling device 10 can be used to pull a zipper 11 sewn on a car cushion cover 1 to assist in installing the car cushion cover 1 on a car cushion. Of course, the present disclosure is not limited thereto. The pulling device 10 can be used to pull a zipper 11 installed or sewn on any member, and the zipper 11 can be any appropriate type of zipper, such as a conventional zipper or a invisible zipper, etc. Figure 2b A specific structure of the zipper 11 adapted to be installed on the car cushion cover 1 is shown. Figure 2b The zipper 11 shown is a invisible zipper, which includes a first flexible member 101, a second flexible member 102, zipper teeth 103 installed on the first flexible member 101 and the second flexible member 102 respectively, and a zipper head 12. When the zipper 11 is pulled up, the zipper teeth 103 of the zipper 11 cannot be seen from outside.

[0050] The pulling device 10 can include a pulling cable 13 for connecting with the zipper head 12 of the zipper 11, a guide element 14 for guiding the pulling cable 13 to adjust the orientation of the pulling cable 13, and a winding device 15 for winding the pulling cable 13 to pull the zipper head 12.

[0051] By means of the guide element 14, the pulling device 10 according to the present disclosure can adjust the orientation of the pulling cable 13 adaptively according to the orientation change of each section of the zipper extension path of the zipper 11. In this way, during the pulling process, the pulling device 10 can make the part of the pulling cable 13 between the zipper head 12 and the guide element 14 and the section of the zipper extension path through which the zipper head 12 is about to travel in a substantially parallel orientation, or make the orientation deviation between the part of the pulling cable 13 between the zipper head 12 and the guide element 14 and the section of the zipper extension path through which the zipper head 12 is about to travel less than a predetermined value (which can be less than 15°, 10°, 5°, etc.).

[0052] Since the portion of the traction cable 13 located between the slider 12 and the guide element 14 is in a substantially parallel orientation or the orientation deviation of both is less than a predetermined value with the segment of the zipper extension path through which the slider 12 is about to travel, the traction cable 13 not only can adjust the orientation of the slider 12 to be substantially consistent with the orientation of the segment of the zipper extension path through which the slider 12 is about to travel, but also can exert most of the traction force on the slider 12 in a direction parallel to the orientation of the segment of the zipper extension path through which the slider 12 is about to travel. This not only helps the zipper 11 to be easily pulled up, but also can prevent the zipper 11 from being damaged at the position where the orientation of the zipper extension path changes.

[0053] In one embodiment according to the present disclosure, the traction cable 13 can be directly connected on the slider 12 of the zipper 11. In another embodiment according to the present disclosure, as shown in Figure 2b , the traction cable 13 can be connected on the slider 12 of the zipper 11 via an auxiliary connector 104. The auxiliary connector 104 can have any appropriate configuration, for example, it can include a first connecting portion 105 for connecting with the traction cable 13 and a second connecting portion 106 for connecting with the slider 12 of the zipper 11. The second connecting portion 106 of the auxiliary connector 104 can be a hook which can be directly hooked in an opening provided in the slider 12.

[0054] In one embodiment according to the present disclosure, the traction device 10 can be provided with only one guide element 14. In this embodiment, the guide element 14 can be moved to different positions to steplessly adjust the orientation of the traction cable 13 according to the orientation of the zipper extension path. This makes the traction device 10 more flexible to implement adjustment, thereby being able to operate more efficiently.

[0055] The guide element 14 can have any appropriate configuration. As shown in Figure 2c , in one embodiment according to the present disclosure, the guide element 14 can include a body 141 and a guide wheel 142 mounted on the body 141. The traction cable 13 can extend around the outer periphery of the guide wheel 142 to facilitate the traction movement of the traction cable 13. The guide wheel 142 can be rotatable. The body 141 can be configured like a "C" shape or a "U" shape and include arm portions 143 opposite to each other. The arm portions 143 can be used to prevent the traction cable 13 from sliding out of the body 141.

[0056] In another embodiment according to the present disclosure, as shown in Figure 3a , Figure 3b and Figure 4As shown, the traction device 10 can comprise a plurality of guide elements 14. Each guide element 14 is used to guide the traction cable 13 to a different orientation than the other guide elements 14. In particular, in the case that the car seat cover 1 comprises a plurality of zippers 11 (such as, Figure 3a the car seat cover 1 shown comprises two zippers 11), two or more guide elements 14 can be provided in the vicinity of each zipper 11 for guiding each zipper. Figure 3a and Figure 3b In the embodiment shown, when the traction cable 13 is guided with the first guide element 14a, the portion of the traction cable 13 between the zipper head 12 and the first guide element 14a is substantially parallel to the first section 111 of the zipper extension path which extends substantially vertically or the orientation deviation of both is less than a predetermined value (such as Figure 3a and Figure 3b shown in the left-hand side drawing); and when the traction cable 13 is guided with the second guide element 14b, the portion of the traction cable 13 between the zipper head 12 and the second guide element 14b is substantially parallel to the second section 112 of the zipper extension path which extends obliquely or the orientation deviation of both is less than a predetermined value (such as Figure 3a and Figure 3b shown in the right-hand side drawing). In other embodiments according to the present disclosure, more guide elements 14 can be provided to better adapt to the orientation changes of the zipper extension path.

[0057] Likewise, as Figure 4 shown, in the case that the traction device 10 comprises a plurality of guide elements 14, each guide element 14 can have a structure as Figure 2c shown. That is, each guide element 14 can comprise a body 141 and a guide wheel 142 mounted on the body 141. The traction cable 13 can extend around the outer periphery of the guide wheel 142 to facilitate the traction movement of the traction cable 13. The guide wheel 142 can be rotatable. The body 141 can be configured such as a "C" shape or a "U" shape and comprise arm portions 143 opposite to each other. The arm portions 143 can be used to prevent the traction cable 13 from slipping out of the body 141.

[0058] In some embodiments, the traction device 10 can further comprise an actuator 16 for actuating the winding apparatus 15. The actuator 16 can be a motor. In particular, the actuator 16 can be a stepper motor. The actuator 16 can be configured to be activated only when an actuation action is applied by an operator and to be stopped when the actuation action is released by the operator. Such an actuator 16 is advantageous in some cases. For example, in some cases, it is required to temporarily stop the traction of the zippers 11 during the installation of the car seat cover 1 to adjust the installation position of the car seat cover 1 or to clear obstacles on the zipper extension path, etc. To this end, the traction device 10 can further comprise an actuator controller for the actuator 16.

[0059] In one embodiment according to the present disclosure, the actuator controller can be a foot pedal. When the operator steps on the foot pedal with his foot, the actuator 16 actuates the winding device 15, thereby winding the traction cable 13 and pulling the zipper head 12 via the traction cable 13; when the operator's foot leaves the foot pedal, the actuator 16 stops actuating the winding device 15, thereby stopping winding the traction cable 13 and stopping pulling the zipper head 12 via the traction cable 13.

[0060] In another embodiment according to the present disclosure, the actuator controller can be a remote controller. When the operator presses the start button on the remote controller, the actuator 16 actuates the winding device 15, thereby winding the traction cable 13 and pulling the zipper head 12 via the traction cable 13; when the operator presses the stop button on the remote controller, the actuator 16 stops actuating the winding device 15.

[0061] In one embodiment according to the present disclosure, the traction device 10 can further comprise an operation table 17. The operation table 17 can comprise a plate-like element adapted to place or position the car seat cushion. However, the present disclosure is not limited thereto. The operation table 17 can comprise any other type of element adapted to place or position the car seat cushion.

[0062] Next, with reference to Figures 5 to 7 , a specific structure of a traction device 20 for pulling a zipper according to another embodiment of the present disclosure is shown. The traction device 20 can comprise an operation table 21 for placing or positioning an operation article such as a car seat cushion, a clamping element 22 for clamping the operation article on the operation table 21, a traction cable 23 for connecting with the zipper head of the zipper, a guide element 24 for guiding the traction cable 23 to adjust the orientation of the traction cable 23, a winding assembly 25 for winding the traction cable 23 to pull the zipper head, and a control device 26 for controlling the traction device 20. Of course, the present disclosure is not limited thereto. Depending on actual needs, the traction device 20 can comprise more or fewer components. For example, the traction device 20 can further comprise an actuator controller 28 for controlling the actuation of the winding assembly 25. For example, the traction device 20 can also not comprise any one or more of the components such as the operation table 21, the clamping element 22, the control device 26, etc.

[0063] In the embodiment shown in Figures 5 to 7 , the traction device 20 can be provided with only one guide element 24. The guide element 24 can be configured to be movably mounted on the guide rail 27, such that the guide element 24 can move along the extension direction of the guide rail 27, such as shown in Figure 5In addition, the guide element 24 can also be configured to rotate along its central axis, so that the guide element 24 can be rotated to any direction. In another embodiment according to the present disclosure, the guide element 24 can also be configured to move vertically up and down along a vertical direction or to move up and down in a pitching motion about a horizontal pivot axis. All these features can give the guide element 24 more degrees of freedom, so that it can be more easily adjusted steplessly to the orientation of the traction cable 23 according to the orientation of the zipper extension path.

[0064] Referring to Figure 8 , a specific structure of the guide element 24 according to an embodiment of the present disclosure is shown. As shown in Figure 8 , the guide element 24 can include a vertically extending base 241 and a guide portion 242 located on the base 241. The base 241 can be cylindrical. In an embodiment according to the present disclosure, the base 241 can include a rotating member rotating along its central axis, so that the guide portion 242 can rotate about the central axis of the base 241. In another embodiment according to the present disclosure, the base 241 can include a rotating motor. The rotating motor of the base 241 is configured to drive the guide portion 242 to rotate about the central axis of the base 241.

[0065] The guide portion 242 can be configured in an "L" shape, which can include a vertically extending portion 243 and a horizontally extending portion 244. In an embodiment according to the present disclosure, the vertically extending portion 243 and the horizontally extending portion 244 of the guide portion 242 can be integrally formed. In another embodiment according to the present disclosure, the vertically extending portion 243 and the horizontally extending portion 244 of the guide portion 242 can be pivotally connected, so that the horizontally extending portion 244 can pitch relative to the vertically extending portion 243 about a pivot axis.

[0066] In an embodiment according to the present disclosure, the guide element 24 can include one or more guide wheels 245. The traction cable 23 can extend around the outer periphery of the guide wheels 245, so as to facilitate the traction movement of the traction cable 23. The guide wheels 245 can rotate. In the embodiment shown, two guide wheels 245 are provided, one of which is provided near the free end of the horizontally extending portion 244 of the guide portion 242, and the other is provided near the top end of the vertically extending portion 243 of the guide portion 242. More guide wheels 245 can be provided as needed. Figure 8

[0067] Referring to Figure 9 ​, shows a specific structure of the clamping element 22 according to one embodiment of the present disclosure. The clamping element 22 can include a first clamping portion 221 and a second clamping portion 222. The first clamping portion 221 can be fixedly connected with a screw rod 223, while the second clamping portion 222 can be rotatably mounted on the screw rod 223. The second clamping portion 222 can be caused to rotate around the screw rod 223 to move the second clamping portion 222 along the extension direction of the screw rod 223 towards or away from the first clamping portion 221, so as to clamp or release the operation article such as the automobile seat cushion. Of course, the present disclosure is not limited to this. The clamping element 22 can have any other appropriate structure.

[0068] With reference to Figure 10 , shows a specific structure of the winding assembly 25 according to one embodiment of the present disclosure. The winding assembly 25 can include a winding device 251 for winding the traction cable 23 to pull the zipper head 12 and an actuator 252 for actuating the winding device 251. The actuator 252 can be a motor. In one embodiment of the present disclosure, the actuator 252 can be a servo motor. A magnetic powder clutch 253 can be provided between the servo motor and the winding device 251 to stably transmit torque.

[0069] In one embodiment of the present disclosure, the winding assembly 25 can further include a limiting element 254. The limiting element 254 is configured to limit the winding of the traction cable 23 on the winding device 251, so that the traction cable 23 will not be out of the range of the winding device 251 during the winding process. As shown in Figure 10 , the limiting element 254 can include a support plate 2542 provided with an elongated slot 2541 and a movable element 2543 located above the support plate 2542. The movable element 2543 can include a central hole. The traction cable 23 can extend through the central hole of the movable element 2543 and the elongated slot of the support plate. When the winding device 251 winds the traction cable 23, the movable element 2543 can reciprocate on the support plate 2542 between the two ends of the elongated slot 2541, so as to ensure that the traction cable 23 is wound on the winding device 251 without being out of the range of the winding device 251.

[0070] The components of the traction device 20 can be controlled by the control device 26. For example, the control device 26 can control the operation of the actuator 252 and / or the horizontal or vertical movement, rotation, pitch movement, etc. of the guide element 24. In some cases, the guide element 24 can move horizontally or vertically, rotate, or pitch according to the orientation of the zipper extension path without being controlled by the control device 26.

[0071] As mentioned above, the traction device 20 can also include an actuator controller 28 for controlling actuation of the winding assembly 25. In one embodiment according to the present disclosure, the actuator controller 28 can be a foot pedal. When the operator steps on the foot pedal with his foot, the actuator 252 actuates the winding device 251 of the winding assembly 25 to wind the traction cable 23, thereby to traction the slider head via the traction cable 23; when the operator's foot leaves the foot pedal, the actuator 252 stops actuating the winding device 251, thereby to stop traction of the slider head via the traction cable 23. In another embodiment according to the present disclosure, the actuator controller can be a remote controller. When the operator presses the start button on the remote controller, the actuator 252 actuates the winding device 251, thereby to traction the slider head via the traction cable 23; when the operator presses the stop button on the remote controller, the actuator 252 stops actuating the winding device 251, thereby to stop traction of the slider head via the traction cable 23.

[0072] The traction devices 10 and 20 for sliders according to the present disclosure are described above with respect to car seat cushions and car seat covers. However, the present disclosure is not limited thereto. The traction devices 10 and 20 for sliders according to the present disclosure can be used to traction sliders mounted on any suitable component or article.

[0073] The exemplary embodiments according to the present disclosure are described above with reference to the drawings. However, it will be appreciated by those skilled in the art that various changes and modifications can be made to the exemplary embodiments according to the present disclosure without departing from the spirit and scope of the present disclosure. All such changes and modifications are intended to be included within the scope of the present disclosure as defined by the appended claims, and equivalents thereof. The present disclosure is defined by the appended claims, and equivalents thereof.

Claims

1. A pulling device (10, 20) for a zipper, comprising: a pulling cable (13, 23) for connection with a zipper head (12) of a zipper (11); a guide element (14, 24) for guiding the pulling cable to adjust the orientation of the pulling cable, the guide element being movably mounted on a guide rail (27) such that the guide element can be moved horizontally along the extension direction of the guide rail; and a winding apparatus (15, 251) for winding the pulling cable to pull the zipper head; wherein the pulling device (10, 20) is configured to, during pulling, bring the portion of the pulling cable between the zipper head and the guide element into a substantially parallel orientation with the section of the zipper extension path through which the zipper head is about to travel, or to bring the orientation deviation between the portion of the pulling cable between the zipper head and the guide element and the section of the zipper extension path through which the zipper head is about to travel to be less than a predetermined value, such that the pulling device can adaptively adjust the orientation of the pulling cable according to the orientation changes of the sections of the zipper extension path of the zipper; wherein the guide element (24) comprises a vertically extending base (241) and a guide portion (242) on the base, the guide portion being configured in an "L" shape and comprising a vertically extending portion and a horizontally extending portion; and wherein the vertically extending base (241) comprises a rotating component such that the guide portion can be rotated around a central vertical axis of the vertically extending base. The pulling device is provided with only one guide element (14, 24), which can also perform one or more of the following movements: vertical movement along a vertical direction, and pitching movement around a horizontal pivot.

2. The traction device (10, 20) according to claim 1, wherein The pulling device comprises an actuator (16, 252) for actuating the winding apparatus.

3. The traction device (10, 20) according to claim 1 or 2, wherein The pulling device comprises an actuator controller (28) for controlling the actuation of the actuator.

4. The traction device (10, 20) according to claim 3, wherein The actuator controller (28) is a foot pedal or a remote controller.

5. The traction device (10, 20) according to claim 4, wherein The pulling device further comprises an operation table (17, 21) for placing or positioning an operation article.

6. The traction device (10, 20) according to claim 1 or 2, wherein The pulling device comprises a clamping element (22) for clamping the operation article on the operation table.

7. The traction device (10, 20) according to claim 6, wherein The guide element comprises a guide wheel (142, 245) around which the pulling cable extends.

8. The traction device (10, 20) according to claim 1 or 2, wherein The base comprises a rotating motor to drive the guide portion to rotate around the central axis of the base.

9. The traction device (10, 20) according to claim 1 or 2, wherein The vertically extending portion and the horizontally extending portion are integrally formed.

10. The traction device (10, 20) according to claim 1 or 2, wherein The vertically extending portion and the horizontally extending portion are pivotally connected such that the horizontally extending portion can perform a pitching movement relative to the vertically extending portion around a pivot.

11. The traction device (10, 20) according to claim 1 or 2, wherein The winding apparatus is provided within a winding assembly, which comprises a limiting element (254) to limit the winding of the pulling cable on the winding apparatus without being out of the range of the winding apparatus.

12. The traction device (10, 20) according to claim 1 or 2, wherein ​ 13. The traction device (10, 20) according to claim 12, wherein The limiting element comprises a support plate provided with an elongated slot and a movable element located above the support plate, the movable element comprising a central hole through which the traction cable extends and the elongated slot of the support plate.

14. The traction device (10, 20) according to claim 1 or 2, wherein, The traction device further comprises a control device (26) for controlling the traction device.

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