Wire harness winding and unwinding device

Abstract

The invention relates to the technical field of winders, in particular to a wire harness winding and unwinding device. The device comprises a base which is used for supporting a ratchet wheel, a cushion block, a rotating shaft and a torsional spring fixing seat; one end of the rotating shaft penetrates through the through hole in the left side supporting plate of the base, and the ratchet wheel and the cushion block are mounted in the threaded hole in the left side supporting plate of the base; a through hole in a right side supporting plate of the base is used for allowing the other end of the rotating shaft to penetrate through, and a threaded hole in the right side supporting plate of the base is used for mounting the torsional spring fixing seat; the rotating shaft is provided with a wire harness winding and unwinding component. The unfolding length of the wire harness can be adjusted, a user only needs to stretch the wire harness to a proper length and loosen the wire harness, and the wire harness can be automatically and firmly locked.

Description

Technical Field

[0001] The invention relates to the technical field of wire reels, and in particular to a wire harness retracting and releasing device. Background Art

[0002] In human production and life, various wiring harness deployment and storage operations are often involved, such as the deployment and storage of measuring tapes, the deployment and recovery of horizontal positioning lines used in construction, and various warning lines (belts). Since different users and usage scenarios have different requirements for the deployment length of wiring harnesses, the device is required to be able to customize the deployment length according to the user's needs, and the wiring harness can be locked at this length; in addition, as a daily necessity, the device is required to be able to recover the wiring harness through simple operations.

[0003] The prior art lacks a wire harness retracting and releasing device that can customize the unfolding length according to the needs of the user and can lock the wire harness at this length, so improvement is urgently needed. Summary of the invention

[0004] In view of the above-mentioned shortcomings of the prior art, an object of the present invention is to provide a wire harness retracting device, which can customize the unfolding length according to the needs of the user, and the wire harness can be locked at this length.

[0005] In order to achieve the above-mentioned object and other related objects, the present invention provides a wire harness retracting and releasing device, comprising:

[0006] A base, used to provide support for the ratchet, the spacer, the rotating shaft, and the torsion spring fixing seat;

[0007] The through hole on the left support plate of the base is used to pass one end of the rotating shaft, and the threaded hole on the left support plate of the base is used to install the ratchet and the spacer;

[0008] The through hole on the right side support plate of the base is used to pass the other end of the rotating shaft, and the threaded hole on the right side support plate of the base is used to install the torsion spring fixing seat;

[0009] The rotating shaft is provided with a wire harness retracting and releasing component.

[0010] In one embodiment of the present invention, the ratchet includes a first ratchet and a second ratchet of the same shape and size, and the pad includes a first pad, a second pad, a third pad and a fourth pad; the ratchet teeth of the first ratchet and the second ratchet are opposite and the four first circular through holes thereon are aligned, and the first ratchet and the second ratchet are fixed to the four threaded holes on the left support plate of the base by four fixing screws that are respectively inserted into the first pad, the second pad, the third pad and the fourth pad to achieve the installation and fixation of the ratchet and the pad.

[0011] In one embodiment of the present invention, the wire harness retracting component comprises:

[0012] The cylindrical sections at both ends of the drum are used to limit the wiring harness, the through circular hole along the axis of the drum is used to pass the rotating shaft, and the keyway of the drum is used to place a flat key;

[0013] A flat key, corresponding to the keyway of the rotating shaft and the roller, for realizing the connection between the rotating shaft and the roller;

[0014] A wire harness is wound on the drum, one end of the wire harness is free, and a ring is fixed to the other end of the wire harness, and the threaded blind hole on the surface of the drum is used to fix the ring of the drum;

[0015] A telescopic lever assembly, which is mounted on the rotating shaft and is located between the movable disk and the movable disk cover;

[0016] A limit card block, a reset card block, and a movable card block, all of which are installed between the movable disk and the movable disk cover plate;

[0017] The two pawls are respectively mounted on the movable disk and the movable disk cover, and are respectively engaged with the first ratchet and the second ratchet;

[0018] A shaft retaining ring, which is installed at the end of the rotating shaft, that is, one end of the right support plate close to the base;

[0019] A first tension spring, which is installed between the reset block and the movable disk cover;

[0020] A second tension spring, which is installed between the movable clamping block and the movable disk cover plate;

[0021] a first cylindrical compression spring mounted between the first pawl of the pawl and the movable disk;

[0022] a second cylindrical compression spring mounted between the second pawl of the pawl and the movable disk cover;

[0023] A torsion spring, one end of which is connected to the rotating shaft, and the other end of which is connected to a torsion spring fixing base;

[0024] A first cotter pin mounted at the end of the rotating shaft;

[0025] A first cotter pin is mounted on the torsion spring fixing base.

[0026] In one embodiment of the present invention, the movable disk includes a movable disk body, and a second circular through hole arranged on the movable disk body and close to one side of the roller, a limit block fixing hole, a movable block limit column, a reset block limit column, a first non-through arc groove, a first compression spring fixing plate, a first pawl mounting column, and a movable disk connecting column, the second circular through hole is used to pass through the rotating shaft, the movable disk connecting column is used to connect the movable disk cover plate, and the reset block limit column is used to limit the sliding range of the reset block and prevent the reset block from contacting the limit block. The movable card block limit column is used to limit the sliding range of the movable card block and prevent the movable card block from contacting the reset card block. The first non-through arc groove cooperates with the reset card block and the arc boss on the movable card block to achieve relative sliding. The cylindrical boss on the first compression spring fixing plate is used to insert the first cylindrical compression spring. The first pawl mounting column of the ratchet cooperates with the circular through hole on the pawl. The two limit card block fixing holes correspond to the two threaded blind holes on the limit card block, so that the limit card block can be fixed to the movable disk by two screws.

[0027] In one embodiment of the present invention, the movable disk cover plate includes a movable disk cover plate body, and a first tension spring connecting column arranged on the movable disk cover plate body and close to the side of the roller, as well as a third circular through hole, a through arc groove, a second non-through arc groove, a second compression spring fixing plate, a second pawl mounting column, and a movable disk connecting hole arranged on the movable disk cover plate body and close to the side of the movable disk, the third circular through hole is used to pass through the rotating shaft, and the movable disk connecting hole is used to connect the movable disk, the second non-through arc groove cooperates with the reset block and the arc boss on the movable block to achieve relative sliding, the through arc groove is used to pass through the reset block and the second tension spring connecting column on the movable block, the cylindrical boss on the second compression spring fixing plate is used to insert the second cylindrical compression spring, the second pawl mounting column cooperates with the circular through hole on the pawl, and the grooves at the ends of the two first tension spring connecting columns are used to clamp the circles at the ends of the tension springs.

[0028] In one embodiment of the present invention, the pawl comprises:

[0029] A first pawl, wherein the ratchet teeth of the first pawl are engaged with the ratchet teeth of the first ratchet wheel, and the shifting block of the first pawl shortens the length of the first cylindrical compression spring under the action of the shifting rod, so that the first pawl is separated from the first ratchet wheel, thereby realizing the relative rotation of the movable disk and the first ratchet wheel;

[0030] The second pawl, the ratchet teeth of the second pawl are engaged with the ratchet teeth of the second ratchet wheel, and the shifting block of the second pawl shortens the length of the second cylindrical compression spring under the action of the shifting rod, so that the second pawl is separated from the second pawl, thereby realizing the relative rotation of the movable disk cover and the second ratchet wheel.

[0031] In one embodiment of the present invention, the special-shaped blocking block on the reset block is used to cover the limit block, and the special-shaped blocking block on the movable block is used to cover the reset block.

[0032] In one embodiment of the present invention, the telescopic lever assembly includes a lever sleeve, a lever, a limiting column, and a square compression spring. The lever sleeve is provided with a rectangular through hole and a notch at one end for inserting the rotating shaft. The notch side of the lever sleeve is provided with two circular through holes for fixing on the rotating shaft. The side of the lever sleeve is provided with a waist-shaped through hole for restricting the movement of the limiting column. The front end of the lever has an arc and can be inserted into the hole of the lever sleeve as a whole. The lever is provided with a threaded through hole. The limiting column is provided with a thread and its length is greater than the thickness of the lever sleeve. The lever can be limited in the lever sleeve by installing the lever. The outer contour of the square compression spring is rectangular and can be inserted into the lever sleeve.

[0033] In one embodiment of the present invention, the wire harness retracting and releasing component further includes:

[0034] A first bushing, which penetrates into the rotating shaft and is located between the inner side of the left support plate of the base and the outer side of the movable disk;

[0035] A second bushing, which penetrates into the rotating shaft and is located between the outer side of the movable disc cover and the roller;

[0036] A third bushing is inserted into the rotating shaft and is located between the roller and the inner side of the right supporting plate of the base.

[0037] In one embodiment of the present invention, the torsion spring fixing seat comprises:

[0038] A first torsion spring fixing seat, one end of which is fixed to the right support plate of the base by a screw, and the round hole on the other end is inserted into the first cotter pin;

[0039] The second torsion spring fixing seat has one end fixed to the right support plate of the base with a screw, and the round hole on the other end is inserted into the first cotter pin, and the narrow gap formed between the first torsion spring fixing seat and the second torsion spring fixing seat is inserted into the end of the torsion spring.

[0040] As described above, a wire harness retracting and releasing device of the present invention has the following beneficial effects:

[0041] (1) The wire harness retracting and releasing device of the present invention includes a base for providing support for a ratchet, a cushion block, a rotating shaft, and a torsion spring fixing seat. The unfolding length of the wire harness of the present invention is adjustable. The user only needs to stretch the wire harness to a suitable length and release it, and the wire harness can be automatically and securely locked.

[0042] (2) The wiring harness deployment and recovery operation of the wiring harness retracting device of the present invention is simple. When the user needs to deploy the wiring harness, he only needs to continuously pull the free end of the wiring harness. When the wiring harness is deployed and locked, the wiring harness can be further deployed by pulling the free end of the wiring harness a certain distance. When the wiring harness is deployed to any length, the wiring harness can be completely retracted by pulling the wiring harness a short distance and then releasing it. During the wiring harness retraction process, if the wiring harness needs to be deployed, the wiring harness can be further deployed by pulling the free end of the wiring harness a certain distance. The above operations can be summarized as: long pull to deploy the wiring harness, short pull to retract the wiring harness.

[0043] (3) The wire harness storage and unfolding device of the present invention has a wide range of applications. Various light and small wire harnesses involved in production and life can be stored and unfolded through the device provided by the present invention. The present invention can be applied to the storage and unfolding of various small and light cables. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] Figure 1 This is a right view structural diagram of a wire harness retracting and releasing device provided in an embodiment of the present application.

[0045] Figure 2 This is a front view structural diagram of a wire harness retracting and releasing device provided in an embodiment of the present application.

[0046] Figure 3 A three-dimensional structural diagram of a wire harness retracting and releasing device provided in an embodiment of the present application.

[0047] Figure 4 A rear structural diagram of a wire harness retracting and releasing device provided in an embodiment of the present application.

[0048] Figure 5 A base structure diagram of a wire harness retracting and releasing device provided in an embodiment of the present application.

[0049] Figure 6 This is an exploded view of the remaining devices of a wire harness retracting and releasing device provided in an embodiment of the present application, excluding the base.

[0050] Figure 7 A structural diagram of a movable disk of a wire harness retracting and releasing device provided in an embodiment of the present application.

[0051] Figure 8 A structural diagram of a movable disk cover of a wire harness retracting and releasing device provided in an embodiment of the present application.

[0052] Fig. 9A diagram of the ratchet structure of a wire harness retracting and releasing device provided in an embodiment of the present application.

[0053] Fig.10 This is a structural diagram of the assembly diagram of a telescopic lever assembly of a wire harness retracting and releasing device provided in an embodiment of the present application.

[0054] Fig.11 A relative position diagram of the lever assembly and the limit block, the reset block, the movable block, and the pawl when the wire harness retracting and releasing device provided in an embodiment of the present application is in an initial state.

[0055] Fig.12 A diagram showing the relative positions of the lever assembly, the limit block, the reset block, the movable block, and the pawl when the wire harness retracting and releasing device provided in an embodiment of the present application performs a wire harness extension operation;

[0056] Fig.13 A diagram showing the relative positions of the lever assembly, the limit block, the reset block, the movable block, and the pawl when the wire harness retracting and releasing device provided in an embodiment of the present application interrupts the wire harness extension operation;

[0057] Fig.14 A diagram showing the relative positions of a lever assembly and a limit block, a reset block, a movable block, and a pawl when a wire harness retracting device provided in an embodiment of the present application retracts a wire harness.

[0058] Component number description

[0059] 1 Base

[0060] 2 Ratchet

[0061] 2a First ratchet

[0062] 2b Second ratchet

[0063] 3 Pads

[0064] 3a First pad

[0065] 3b Second spacer

[0066] 3c Third pad

[0067] 3d Fourth pad

[0068] 4 Activity disk

[0069] 5 Movable plate cover

[0070] 6 Pawl

[0071] 61 Toggle Block

[0072] 62 Ratchet

[0073] 63 Compression spring fixing boss

[0074] 64 Fourth circular through hole

[0075] 6a First pawl

[0076] 6b Second pawl

[0077] 7 Limit block

[0078] 8 Reset the card

[0079] 9 Activity Cards

[0080] 10 Lever Cover

[0081] 11 Lever

[0082] 12 Limiting column

[0083] 13 Square compression spring

[0084] 14a First bushing

[0085] 14b Second bushing

[0086] 14c Third bushing

[0087] 15 Axis

[0088] 16 Wire Harness

[0089] 17 Roller

[0090] 18 Flat key

[0091] 19 Shaft retaining ring

[0092] 20 Extension spring

[0093] 20a First tension spring

[0094] 20b Second extension spring

[0095] 21a First cylindrical compression spring

[0096] 21b Second cylindrical compression spring

[0097] 22 Torsion spring

[0098] 23 Torsion spring fixing seat

[0099] 23a First torsion spring fixing seat

[0100] 23b Second torsion spring fixing seat

[0101] 24a First cotter pin

[0102] 24b First cotter pin

[0103] 41 Second circular through hole

[0104] 42 Limiting card fixing hole

[0105] 43 Movable card block limit column

[0106] 44 Reset card block limit column

[0107] 45 The first non-through arc groove

[0108] 46 First compression spring fixing plate

[0109] 47 First pawl mounting column

[0110] 48 movable plate connecting column

[0111] 51 First tension spring connecting column

[0112] 52 The third circular through hole

[0113] 53 Through arc groove

[0114] 54 The second non-through arc groove

[0115] 55 Second compression spring fixing plate

[0116] 56 Second pawl mounting column

[0117] 57 Movable disk connection hole DETAILED DESCRIPTION

[0118] The following describes the embodiments of the present invention by specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the following embodiments and features in the embodiments can be combined with each other without conflict.

[0119] It should be noted that the illustrations provided in the following embodiments are only used to illustrate the basic concept of the present invention in a schematic manner, and thus the illustrations only show components related to the present invention rather than being drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component may be changed arbitrarily, and the component layout may also be more complicated.

[0120] Terms such as first or second can be used to describe various components, but these components are not limited by the above terms. The above terms are used to distinguish one component from another component, for example, without departing from the scope of the concept according to the present disclosure, a first component can be referred to as a second component, and similarly, a second component can be referred to as a first component.

[0121] In addition, "connected / coupled" means that one component is directly electrically coupled to another component or is indirectly electrically coupled through another component. The singular form may include the plural form unless explicitly stated in the sentence. In addition, "include / include" or "includes / includes" used in this specification indicates that one or more components, steps, operations, and elements exist or have been added. The specific structural or functional descriptions of the examples of the implementation of the concepts disclosed in this specification are only illustrated to describe the examples of the implementation of the concepts, and the examples of the implementation of the concepts can be implemented in various forms, but these descriptions are not limited to the examples of the implementation described in this specification.

[0122] According to the concept, various modifications and changes can be applied to the examples of the embodiments, so that the examples of the embodiments will be illustrated in the drawings and described in the specification. However, the examples of the embodiments according to the concept are not limited to the specific embodiments, but include all changes, equivalents or replacements included in the spirit and technical scope of the present disclosure.

[0123] It should be understood that when an element is described as being "coupled" or "connected" to another element, the element may be directly coupled or directly connected to the other element, or may be coupled or connected to the other element through a third element. Conversely, it should be understood that when an element is referred to as being "directly coupled to" or "directly coupled to" another element, no other element is placed between them. Other expressions describing the relationship between components (i.e., "between" and "directly between" or "adjacent to" and "directly adjacent to") need to be interpreted in the same manner.

[0124] The terms used in this specification are only used to describe specific examples of the embodiments and are not intended to limit the present disclosure. If there is no clear opposite meaning in the context, the singular form may include the plural form. In this specification, it should be understood that the term "including" or "having" indicates the presence of the features, quantities, steps, operations, components, parts or combinations thereof described in the specification, but the possibility of the presence or addition of one or more other features, quantities, steps, operations, components, parts or combinations thereof cannot be precluded.

[0125] If there is no contrary definition, all terms (including technical terms or scientific terms) used herein have the same meaning as those generally understood by ordinary technicians in the field. If the terms defined in the commonly used dictionary are not clearly defined in this specification, they should be interpreted as having the same meaning as in the context of the relevant technology, and not interpreted as ideal or overly formal meanings.

[0126] Descriptions of well-known components and processing techniques may be omitted so as not to unnecessarily obscure the embodiments of the disclosure.

[0127] Throughout the specification, the same reference numerals refer to the same elements. Thus, even if a reference numeral is not mentioned or described with reference to one figure, it may be mentioned or described with reference to another figure. Furthermore, even if a reference numeral is not shown in one figure, it may be mentioned or described with reference to another figure.

[0128] In addition, the logic level of the signal may be different or opposite to the described logic level. For example, a signal described as having a logic "high" level may alternatively have a logic "low" level, and a signal described as having a logic "low" level may alternatively have a logic "high" level.

[0129] The following will describe the various embodiments of the present disclosure in detail with reference to the accompanying drawings. However, it will be appreciated by those skilled in the art that in the various embodiments of the present disclosure, many technical details are provided in order to enable the reader to better understand the present disclosure. However, even without these technical details and various changes and modifications based on the following embodiments, the technical solutions claimed in the present disclosure can be implemented.

[0130] See also Figures 1 to 6 , Figure 1 This is a right view structural diagram of a wire harness retracting and releasing device provided in an embodiment of the present application. Figure 2 This is a front view structural diagram of a wire harness retracting and releasing device provided in an embodiment of the present application. Figure 3 A three-dimensional structural diagram of a wire harness retracting and releasing device provided in an embodiment of the present application. Figure 4 A rear structural diagram of a wire harness retracting and releasing device provided in an embodiment of the present application. Figure 5 A base structure diagram of a wire harness retracting and releasing device provided in an embodiment of the present application. Figure 6 This is an exploded view of the other devices of a wire harness retracting device provided in an embodiment of the present application, except for the base. The present invention provides a wire harness retracting device, including a base 1, used to provide support for a ratchet 2, a cushion block 3, a rotating shaft 15, and a torsion spring fixing seat 23; the through hole on the left support plate of the base 1 is used to pass through one end of the rotating shaft 15, and the threaded hole on the left support plate of the base 1 is used to install the ratchet 2 and the cushion block 3; the through hole on the right support plate of the base 1 is used to pass through the other end of the rotating shaft 15, and the threaded hole on the right support plate of the base 1 is used to install the torsion spring fixing seat 23; the rotating shaft 15 is provided with a wire harness retracting component.

[0131] In one embodiment of the present invention, a wire harness retracting device includes a base 1, a left support plate, and a right support plate. The left support plate is provided with a circular through hole and four ratchet fixing holes, the right support plate is provided with a circular through hole, and two torsion spring fixing block mounting holes are provided below. The circular through hole on the left support plate is used to pass the rotating shaft 15, and the four ratchet fixing holes are used to install the ratchet 2 and the pad 3. The circular through hole on the right support plate is used to pass the rotating shaft 15, and the two torsion spring fixing block mounting holes below are used to install the torsion spring fixing seat 23.

[0132] Specifically, the ratchet 2 includes a first ratchet 2a and a second ratchet 2b of the same shape and size, and the pad 3 includes a first pad 3a, a second pad 3b, a third pad 3c and a fourth pad 3d; the ratchet teeth of the first ratchet 2a and the second ratchet 2b are opposite and the four first circular through holes thereon are aligned, and the first ratchet 2a and the second ratchet 2b are fixed to the four threaded holes on the left support plate of the base 1 by four fixing screws that are respectively inserted into the first pad 3a, the second pad 3b, the third pad 3c and the fourth pad 3d, so as to achieve the installation and fixation of the ratchet 2 and the pad 3.

[0133] In one embodiment of the present invention, the ratchet 2 includes a first ratchet 2a and a second ratchet 2b, which are annular in shape, with ratchet teeth arranged on the inner side thereof, and four circular through holes evenly distributed along the circumferential direction. When assembled, the ratchet teeth of the first ratchet 2a and the second ratchet 2b are in opposite directions and the four circular through holes are aligned. When assembled, four fixing screws are first passed through the four circular through holes of the first ratchet 2a and the second ratchet 2b respectively, and then the first cushion block 3a, the second cushion block 3b, the third cushion block 3c and the fourth cushion block 3d are respectively inserted into the four fixing screws, and then the four fixing screws are screwed into the four threaded holes on the left support plate of the base 1 to achieve the installation and fixation of the ratchet 2 and the cushion block 3.

[0134] In one embodiment of the present invention, the first cushion block 3a, the second cushion block 3b, the third cushion block 3c and the fourth cushion block 3d are cylindrical, and a circular through hole is provided at the center. The first cushion block 3a, the second cushion block 3b, the third cushion block 3c and the fourth cushion block 3d are respectively penetrated with four screws and fixed on the base 1.

[0135] Specifically, the wire harness retracting and releasing component includes: cylindrical sections at both ends of the drum 17 are used to limit the wire harness 16, the through circular hole along the axis of the drum 17 is used to pass the rotating shaft 15, and the keyway of the drum 17 is used to place a flat key 18; the flat key 18 corresponds to the keyway of the rotating shaft 15 and the drum 17, and is used to realize the connection between the rotating shaft 15 and the drum 17; the wire harness 16 is wound on the drum 17, one end of the wire harness 16 is free, and the other end of the wire harness 16 is fixed with a circular ring, and the threaded blind hole on the surface of the drum 17 is used to fix the circular ring of the drum 17; the telescopic lever assembly is installed on the rotating shaft 15 and is located between the movable disk 4 and the movable disk cover 5; the limiting card block 7, the reset card block 8, and the movable card block 9 are all installed between the movable disk 4 and the movable disk cover 5; the two ratchets 6 are respectively arranged It is installed on the movable disk 4 and the movable disk cover 5, and is respectively clamped in the first ratchet 2a and the second ratchet 2b; the shaft retaining ring 19 is installed at the end of the rotating shaft 15, which is one end of the right support plate close to the base 1; the first tension spring 20a is installed between the reset block 8 and the movable disk cover 5; the second tension spring 20b is installed between the movable block 9 and the movable disk cover 5; the first cylindrical compression spring 21a is installed between the first pawl 6a of the pawl 6 and the movable disk 4; the second cylindrical compression spring 21b is installed between the second pawl 6b of the pawl 6 and the movable disk cover 5; one end of the torsion spring 22 is connected to the rotating shaft 15, and the other end is connected to the torsion spring fixing base; the first cotter pin 24a is installed at the end of the rotating shaft 15; the first cotter pin 24b is installed on the torsion spring fixing base.

[0136] In one embodiment of the present invention, the wire harness retracting device of the present invention includes a base 1, a ratchet 2, a cushion block 3, a movable disk 4, a movable disk cover 5, a pawl 6, a limit block 7, a reset block 8, a movable block 9, a telescopic lever assembly, a bushing, a rotating shaft 15, a wire harness 16, a roller 17, a flat key 18, a shaft retaining ring 19, a tension spring 20, a cylindrical compression spring, a torsion spring 22, a torsion spring fixing seat 23, a cotter pin and a variety of fixing screws. Among them, the ratchet 2, the cushion block 3, and the torsion spring fixing seat 23 are directly installed on the base 1; the movable disk 4, the movable disk cover plate 5, and the bushing are installed on the rotating shaft 15; the telescopic lever assembly is installed on the rotating shaft 15 and is located between the movable disk 4 and the movable disk cover plate 5; the limit card block 7, the reset card block 8, and the movable card block 9 are installed between the movable disk 4 and the movable disk cover plate 5; there are two pawls 6, which are respectively installed on the movable disk 4 and the movable disk cover plate 5, and are respectively inserted into the adjacent ratchet 2; the wire harness 16 is wound on the roller 17; the flat key 18 is installed in the keyway of the rotating shaft 15 and the roller 17; the shaft retaining ring 19 is installed at the end of the rotating shaft 15 ; The first tension spring 20a is installed between the reset block 8 and the movable disk cover 5; the second tension spring 20b is installed between the movable block 9 and the movable disk cover 5; the first cylindrical compression spring 21a is installed between the first pawl 6a of the pawl 6 and the movable disk 4; the second cylindrical compression spring 21b is installed between the second pawl 6b of the pawl 6 and the movable disk cover 5; one end of the torsion spring 22 is connected to the rotating shaft 15, and the other end is connected to the torsion spring fixing base; the first cotter pin 24a is installed at the end of the rotating shaft 15; the first cotter pin 24b is installed on the torsion spring fixing base.

[0137] See also Figure 7 , Figure 7A structural diagram of a movable disk of a wire harness retracting device provided in an embodiment of the present application. The movable disk 4 includes a movable disk body, and a second circular through hole 41, a limit block fixing hole 42, a movable block limit column 43, a reset block limit column 44, a first non-through arc groove 45, a first compression spring fixing plate 46, a first pawl mounting column 47, and a movable disk connecting column 48, the second circular through hole 41 is used to pass through the rotating shaft 15, the movable disk connecting column 48 is used to connect the movable disk cover plate 5, and the reset block limit column 44 is used to limit the sliding range of the reset block 8 and prevent the reset block 8 from contacting the limit block 7. The movable block limiting column 43 is used to limit the sliding range of the movable block 9 and prevent the movable block 9 from contacting the reset block 8. The first non-through arc groove 45 cooperates with the arc bosses on the reset block 8 and the movable block 9 to achieve relative sliding. The cylindrical boss on the first compression spring fixing plate 46 is used to insert the first cylindrical compression spring 21a. The first ratchet pawl mounting column 47 cooperates with the circular through hole on the ratchet pawl 6. The two limiting block fixing holes 42 correspond to the two threaded blind holes on the limiting block 7, so that the limiting block 7 can be fixed to the movable disk 4 by two screws.

[0138] In one embodiment of the present invention, the movable disk 4 is provided with: a second circular through hole 41 located in the center, three movable disk connecting columns 48 distributed at 90° intervals in the circumferential direction and with threaded blind holes, a movable block limiting column 43, a reset block limiting column 44, a non-through arc groove 45, a first compression spring fixing plate 46 provided with a cylindrical boss, a first pawl mounting column 47, and two limiting block fixing holes 42, and the above features are all located on the same side of the movable disk 4. The second circular through hole 41 is used to pass through the rotating shaft 15; the movable disk connecting column 48 is used to connect the movable disk cover plate 5; the reset block limiting column 44 is used to limit the sliding range of the reset block 8 and prevent the reset block 8 from contacting the limiting block 7; the movable block limiting column 43 is used to limit the sliding range of the movable block 9 and prevent the movable block 9 from contacting the reset block 8; the non-through arc groove 45 cooperates with the arc bosses on the reset block 8 and the movable block 9 to achieve relative sliding; the cylindrical boss on the first compression spring fixing plate 46 is used to insert the first cylindrical compression spring 21a; the first pawl mounting column 47 cooperates with the circular through hole on the pawl 6; the two limiting block fixing holes 42 correspond to the two threaded blind holes on the limiting block 7, so the limiting block 7 can be fixed to the movable disk 4 by two screws.

[0139] See also Figure 8 , Figure 8A structural diagram of a movable disk cover of a wire harness retracting device provided in an embodiment of the present application. The movable disk cover 5 includes a movable disk cover body, and a first tension spring connecting column 51 disposed on the movable disk cover body and close to the roller 17, and a third circular through hole 52, a through arc groove 53, a second non-through arc groove 54, a second compression spring fixing plate 55, a second pawl mounting column 56, and a movable disk connecting hole 57 disposed on the movable disk cover body and close to the movable disk 4. The third circular through hole 52 is used to pass through the rotating shaft 15, and the movable disk connecting hole 57 is used to connect the movable disk 4. The movable disk 4, the second non-through arc groove 54 cooperates with the arc bosses on the reset block 8 and the movable block 9 to achieve relative sliding, the through arc groove 53 is used to pass through the second tension spring connecting column on the reset block 8 and the movable block 9, the cylindrical boss on the second compression spring fixing plate 55 is used to insert the second cylindrical compression spring 21b, the second pawl mounting column 56 cooperates with the circular through hole on the pawl 6, and the grooves at the ends of the two first tension spring connecting columns 51 are used to clamp the circles at the ends of the tension spring 20.

[0140] In one embodiment of the present invention, one side of the movable disk cover plate 5 is provided with: a third circular through hole 52 located in the center, three movable disk connecting holes 57, a second non-through arc groove 54, a through arc groove 53, a second compression spring fixing plate 55 provided with a cylindrical boss and a second pawl mounting column 56; the other side is provided with two tension spring connecting columns 51, and the connecting columns have tension spring fixing grooves. The third circular through hole 52 is used to pass through the rotating shaft 15; the movable disk connecting hole 57 is used to connect the movable disk 4; the second non-through arc groove 54 cooperates with the arc bosses on the reset block 8 and the movable block 9 to achieve relative sliding; the through arc groove 53 is used to pass through the tension spring connecting column 51 on the reset block 8 and the movable block 9; the cylindrical boss on the second compression spring fixing plate 55 is used to insert the second cylindrical compression spring 21b; the second pawl mounting column 56 cooperates with the circular through hole on the pawl 6; on the other side, the grooves at the ends of the two tension spring connecting columns 51 are used to clamp the circles at the ends of the tension spring 20.

[0141] See also Fig. 9 , Fig. 9A pawl structure diagram of a wire harness retracting and releasing device provided in an embodiment of the present application. The pawl 6 includes a first pawl 6a and a second pawl 6b, wherein the ratchet teeth 62 of the first pawl 6a are engaged with the ratchet teeth 62 of the first ratchet wheel 2a, and the toggle block 61 of the first pawl 6a shortens the length of the first cylindrical compression spring 21a under the action of the toggle rod 11, so that the first pawl 6a is separated from the first ratchet wheel 2a, and the relative rotation between the movable disk 4 and the first ratchet wheel 2a is realized; the ratchet teeth 62 of the second pawl 6b are engaged with the ratchet teeth 62 of the second ratchet wheel 2b, and the toggle block 61 of the second pawl 6b shortens the length of the second cylindrical compression spring 21b under the action of the toggle rod 11, so that the second pawl 6b is separated from the second pawl 6b, and the relative rotation between the movable disk cover plate 5 and the second ratchet wheel 2b is realized.

[0142] In one embodiment of the present invention, the pawl 6 includes a first pawl 6a and a second pawl 6b, each of which includes a toggle block 61, a ratchet tooth 62, a compression spring fixing boss 63 and a fourth circular through hole 64, and the first pawl 6a and the second pawl 6b correspond to the first ratchet wheel 2a and the second ratchet wheel 2b respectively. The ratchet tooth 62 of the first pawl 6a can be inserted into the ratchet tooth of the first ratchet wheel 2a; the toggle block 61 can shorten the length of the first cylindrical compression spring 21a under the action of the toggle rod 11, thereby separating the first pawl 6a from the first ratchet wheel 2a, and realizing the relative rotation of the movable disk 4 and the first ratchet wheel 2a; the compression spring fixing boss 63 is used to insert the first cylindrical compression spring 21a; the fourth circular through hole 64 cooperates with the pawl mounting column of the movable disk 4. The appearance of the second pawl 6b is the same as that of the first pawl 6a, and its ratchet teeth 62 can be inserted into the ratchet teeth of the second ratchet wheel 2b; the shift block 61 can shorten the length of the second cylindrical compression spring 21b under the action of the shift rod 11, thereby separating the second pawl 6b from the second ratchet wheel 2b, thereby realizing the relative rotation of the movable disk cover 5 and the second ratchet wheel 2b; the compression spring fixing boss 63 is used to insert the second cylindrical compression spring 21b; the fourth circular through hole 64 cooperates with the pawl mounting column of the movable disk cover 5.

[0143] See also Fig.10 , Fig.10The present invention provides a telescopic lever assembly structure diagram of a wire harness retracting and releasing device provided in an embodiment of the present application. The telescopic lever assembly includes a lever sleeve 10, a lever 11, a limiting column 12, and a square compression spring 13. The lever sleeve 10 is provided with a rectangular through hole and a notch at one end for inserting the rotating shaft 15. The notch side of the lever sleeve 10 is provided with two circular through holes for fixing on the rotating shaft 15. The side of the lever sleeve 10 is provided with a waist-shaped through hole for restricting the movement of the limiting column 12. The front end of the lever 11 has an arc and can be inserted into the hole of the lever sleeve 10 as a whole. The lever 11 is provided with a threaded through hole. The limiting column 12 is provided with a thread and has a length greater than the thickness of the lever sleeve 10. The lever 11 can be inserted into the lever sleeve 10 to limit the position of the lever 11 in the lever sleeve 10. The outer contour of the square compression spring 13 is rectangular and can be inserted into the lever sleeve 10.

[0144] In one embodiment of the present invention, the telescopic lever assembly includes a lever sleeve 10, a lever 11, a limiting column 12, and a square compression spring 13. The lever sleeve 10 is provided with a rectangular through hole and a notch at one end, which is used to install the rotating shaft 15. Two circular through holes are provided on the notch side, which can be fixed on the rotating shaft 15; a waist-shaped through hole is provided on the side of the lever sleeve 10, which is used to restrict the movement of the limiting column 12; the front end of the lever 11 has an arc, and the whole can be installed in the hole of the lever sleeve 10, and a threaded through hole is provided on it; the limiting column 12 is provided with a thread, and the length is greater than the thickness of the lever sleeve 10, and the lever 11 can be installed in the lever sleeve 10 to limit the position of the lever 11 in the lever sleeve 10; the square compression spring 13 has a rectangular outer contour, which can be installed in the lever sleeve 10, and its stiffness coefficient K is relatively large. When assembling the telescopic lever assembly, firstly, the lever 11 is inserted from the notched side of the lever sleeve 10, and the end of the lever 10 with the arc surface is exposed; then the limiting column 12 is screwed into the threaded hole of the lever 11 and passed through the other side of the lever sleeve 10. At this time, the lever 11 and the limiting column 12 form a whole, and under the constraint of the waist-shaped through hole on the lever sleeve 10, the lever 11 can slide freely but will not fall out; then the square compression spring 13 is installed from the notch of the lever sleeve 10, and the notch of the lever sleeve 10 is inserted into the fixed section of the lever assembly on the rotating shaft 15, that is, the cross section is square, and it is fixed with screws, so that the lever 11 can be telescoped under the action of external force.

[0145] In one embodiment of the present invention, the limiting block 7 is provided with two threaded blind holes corresponding to the two limiting block fixing holes 42 on the movable plate 4, and is fixed by two screws.

[0146] In one embodiment of the present invention, the reset block 8 is provided with: a special-shaped blocking block, a tension spring connecting column, a tension spring fixing groove is provided on the tension spring connecting column, and the whole can pass through the through arc groove 53 of the movable disk cover plate 5; two arc-shaped bosses are located on both sides, corresponding to the first non-through arc groove 45 and the second non-through arc groove 54 of the movable disk 4 and the movable disk cover plate 5 respectively; the special-shaped blocking block on the reset block 8 is used to block the limit block 7; during assembly, the tension spring connecting column needs to pass through the through arc groove 53 on the movable disk cover plate 5, and the groove at its end is used to clamp the circle at the end of the tension spring 20; the arc-shaped bosses on both sides respectively cooperate with the first non-through arc groove 45 and the second non-through arc groove 54 of the movable disk 4 and the movable disk cover plate 5 to realize the constrained sliding of the reset block 8.

[0147] In one embodiment of the present invention, the movable block 9 is provided with: a special-shaped blocking block; a tension spring connecting column, on which there is a tension spring fixing groove, which can pass through the through arc groove 53 of the movable disk cover plate 5 as a whole; two arc-shaped bosses, located on both sides, corresponding to the first non-through arc groove 45 and the second non-through arc groove 54 of the movable disk 4 and the movable disk cover plate 5 respectively. The special-shaped blocking block on the movable block 9 is used to block the reset block 8; during assembly, the tension spring connecting column needs to pass through the through arc groove 53 on the movable disk cover plate 5, and the groove at its end is used to clamp the circle at the end of the tension spring 20; the arc-shaped bosses on both sides cooperate with the first non-through arc groove 45 and the second non-through arc groove 54 of the movable disk 4 and the movable disk cover plate 5 respectively to realize the constrained sliding of the movable block 9.

[0148] Specifically, the bushing of the present invention includes a first bushing 14a, a second bushing 14b, and a third bushing 14c. The first bushing 14a penetrates into the rotating shaft 15 and is located between the inner side of the left support plate of the base 1 and the outer side of the movable disk 4; the second bushing 14b penetrates into the rotating shaft 15 and is located between the outer side of the movable disk cover 5 and the roller 17; the third bushing 14c penetrates into the rotating shaft 15 and is located between the roller 17 and the inner side of the right support plate of the base 1.

[0149] In one embodiment of the present invention, the bushing is a thin-walled circular ring and needs to be installed in multiple positions. The bushing is installed in three positions in total. The first bushing 14a penetrates the rotating shaft 15 and is located between the inner side of the left support plate of the base 1 and the outer side of the movable disk 4, and its function is to separate the two; the second bushing 14b penetrates the rotating shaft 15 and is located between the outer side of the movable disk cover 5 and the roller 17, and its function is to separate the two; the third bushing 14c penetrates the rotating shaft 15 and is located between the roller 17 and the inner side of the right support plate of the base 1, and its function is to separate the two.

[0150] In one embodiment of the present invention, a cylindrical section with a slightly larger diameter is provided at one end of the rotating shaft 15 for limiting; a lever assembly fixing section with a slightly smaller size and a square cross-section is provided in the middle; in addition, a keyway is provided; a shaft retaining ring groove is provided near the starting point at the other end, and two semicircular torsion spring fixing bosses are provided at the starting point, and a circular through hole is opened on the boss for passing the cotter pin. The cylindrical section at the left end of the rotating shaft 15 is used to limit the left end after passing through the left and right support plates of the base 1, so that it will not fall out; the cross-section of the middle fixed section of the lever assembly is square, and the circular hole there corresponds to the two circular holes at the notched ends of the lever sleeve 10, and the two can be fixed with screws; the keyway is used to install the flat key 18. During assembly, first put the flat key 18 into the keyway, and then align the keyway inside the roller 17 with the flat key 18 and install it, so that the connection between the rotating shaft 15 and the roller 17 can be achieved; a shaft retaining ring groove is provided near the right end of the rotating shaft 15, and a shaft retaining ring 19 can be installed to limit the right end after passing through the left and right support plates of the base 1, so that it will not fall out; a torsion spring 22 can be inserted in the middle of the two torsion spring fixing bosses at the right end, and the circular through holes on the two bosses are used to pass the cotter pins, which are used to fix one end of the torsion spring 22, so that it will not fall out.

[0151] In one embodiment of the present invention, the wire harness 16 is wound around the drum 17 as a whole, with one end being free and the other end being fixed with a ring, the ring corresponding to the threaded hole on the drum 17 and fixed with a screw.

[0152] In one embodiment of the present invention, cylindrical sections with a slightly larger diameter are provided at both ends of the drum 17 for constraining the wiring harness 16; a radially threaded blind hole is provided on the surface of the middle section; in addition, a through circular hole is provided along the axis, and a keyway is provided inside the circular hole; the cylindrical sections at both ends of the drum 17 are used to limit the wiring harness 16 so that it will not fall out; the threaded blind hole on the surface corresponds to the circular ring at the end of the wiring harness 16, and a screw is inserted into the circular ring and screwed into the threaded hole to achieve fixation; the through circular hole along the axis is used to pass the rotating shaft 15, and the keyway is used to place the flat key 18.

[0153] In one embodiment of the present invention, the flat key 18 corresponds to the keyway of the rotating shaft 15 and the roller 17 to achieve the connection between the two.

[0154] In one embodiment of the present invention, the shaft retaining ring 19 is installed in the shaft retaining ring groove on the rotating shaft 15 to limit the right end of the shaft so that it will not fall off the support plate of the base 1.

[0155] In one embodiment of the present invention, the two ends of the tension spring 20 are in the shape of open circular rings, the normal of the circular ring is perpendicular to the axis of the spring, and needs to be installed in two different positions. One end of the first tension spring 20a is installed in the groove of the tension spring connecting column on the reset block 8, and the other end is installed in the groove of the tension spring connecting column 51 on the movable disk cover 5; one end of the second tension spring 20b is installed in the groove of the tension spring connecting column on the movable block 9, and the other end is installed in the groove of the tension spring connecting column 51 on the movable disk cover 5; and the stiffness coefficients k of the two tension springs are relatively small, and the two springs do not cross each other during assembly, and their function is to enable the reset block 8 and the movable block 9 to return to the initial position after being moved.

[0156] In one embodiment of the present invention, the cylindrical compression spring is installed in two different positions. One end of the first cylindrical compression spring 21a is installed in the compression spring fixing boss on the first pawl 6a, and the other end is installed in the first compression spring fixing plate 46 on the movable disk 4; one end of the second compression spring 21b is installed in the compression spring fixing boss on the second pawl 6b, and the other end is installed in the second compression spring fixing plate 55 on the movable disk cover 5; its function is to realize the clamping and loosening of the first pawl 6a and the first ratchet 2a, and the second pawl 6b and the second ratchet 2b.

[0157] In one embodiment of the present invention, the torsion spring 22 has straight sections at both ends and circular through holes; one end is inserted into the torsion spring fixing boss at the end of the rotating shaft 15, and the other end is inserted into the narrow gap formed by the first torsion spring fixing seat 23a and the second torsion spring fixing seat 23b.

[0158] In one embodiment of the present invention, there are two torsion spring fixing seats 23 in an L-shape. There are two torsion spring fixing seats 23, one end of which is fixed to the right support plate of the base 1 with screws, and the round hole on the other end can be inserted into the split pin 24; the narrow gap formed between the first torsion spring fixing seat 23a and the second torsion spring fixing seat 23b can be inserted into the end of the torsion spring 22.

[0159] In one embodiment of the present invention, the cotter pin 24 needs to be installed in two positions. The first cotter pin 24a penetrates into the circular hole of the torsion spring fixing boss at the end of the rotating shaft 15, and its function is to limit one end of the torsion spring 22 so that it will not fall out; the second cotter pin 24b penetrates into the first torsion spring fixing seat 23a and the second torsion spring fixing seat 23b, and its function is to limit one end of the torsion spring 22 so that it will not fall out.

[0160] In one embodiment of the present invention, the fixing screws include: a ratchet fixing screw, a movable disk fixing screw, a limit block fixing screw, a telescopic lever fixing screw, a wiring harness fixing screw and a torsion spring fixing block screw. The function of each screw is not introduced in detail here.

[0161] Based on the assembly relationship between the above parts, the overall assembly sequence of the wire harness retracting device of the present invention is:

[0162] 1) Place the ratchet teeth of the first ratchet 2a and the second ratchet 2b opposite to each other, align the holes, and fix them together with four pads on the left support plate of the base 1;

[0163] 2) Pass the right end of the rotating shaft 15 (the end with the torsion spring fixing boss) from left to right through the left support plate of the base 1, but not through the right support plate;

[0164] 3) Insert the first bushing 14a into the rotating shaft 15 and make it close to the left support plate of the base 1;

[0165] 4) Install the first pawl 6a and the first cylindrical compression spring 21a into the movable disk 4, and make the ratchet teeth face the outside of the movable disk 4; install the limit block 7 into the corresponding position of the movable disk 4; and insert the rotating shaft 15 into the movable disk 4 with the side with the boss facing right;

[0166] 5) Install the second pawl 6b and the second cylindrical compression spring 21b into the movable disk cover 5, with the ratchet teeth facing the outside of the movable disk cover 5; insert the side of the movable disk cover 5 with the tension spring connecting column to the right into the rotating shaft 15;

[0167] 6) Turn the side of the reset block 8 and the movable block 9 without the boss to the left, and insert the boss on the left side into the groove on the movable disk 4; then pass the tension spring connecting column on the reset block 8 and the movable block 9 through the through groove on the movable disk cover 5, and then align the three movable disk connecting holes with the three connecting columns of the movable disk 4 to fix them;

[0168] 7) Move the two pawls to engage the ratchet teeth of the first pawl 6a into the first ratchet wheel 2a, and engage the ratchet teeth of the second pawl 6b into the second ratchet wheel 2b;

[0169] 8) Install one end of the first tension spring 20a into the groove of the tension spring connecting column on the reset block 8, and the other end into the groove of the tension spring connecting column on the movable disk cover 5; install one end of the second tension spring 20b into the groove of the tension spring connecting column on the movable block 9, and the other end into the groove of the tension spring connecting column on the movable disk cover 5; the two tension springs do not cross each other;

[0170] 9) Insert the second bushing 14b into the rotating shaft 15 and make it close to the movable disc cover 5;

[0171] 10) Install the flat key 18 into the keyway of the rotating shaft 15, align the keyway of the roller 17 with the flat key and insert it into the rotating shaft 15, so that the left side of the roller 17 is close to the second bushing 14b;

[0172] 11) Insert the third bushing 14c into the rotating shaft 15 and close it to the right side of the roller 17;

[0173] 12) Pass the rotating shaft 15 through the right support plate of the base 1, and insert the shaft retaining ring 19 into the corresponding groove at the right end of the rotating shaft 15. At this time, the rotating shaft 15 can only rotate along its own axis and cannot move horizontally;

[0174] 13) Fix the first torsion spring fixing seat 23a and the second torsion spring fixing seat 23b on the right support plate of the base 1, insert one end of the torsion spring 22 into the end of the rotating shaft 15 and insert the first cotter pin 24a to fix it, insert the other end of the torsion spring 22 into the narrow gap formed by the first torsion spring fixing seat 23a and the second torsion spring fixing seat 23b, and insert the second cotter pin 24b to fix it;

[0175] 14) Insert the lever 11 from the notched side of the lever sleeve 10, and expose the end of the lever 10 with the arc surface. Then screw the limit column 12 into the threaded hole of the lever 11 and pass it through the other side of the lever sleeve 10. Then install the square compression spring 13 from the notch of the lever sleeve 10 to complete the assembly of the telescopic lever assembly.

[0176] 15) Place the telescopic lever assembly into the gap between the movable disk 4 and the movable disk cover 5, insert the notch of the lever sleeve 10 into the lever assembly fixing section (square in cross section) on the rotating shaft 15, and fix it with screws;

[0177] 16) Fix the end of the wire harness 16 with the ring at the corresponding position of the drum 17, and wind the wire harness 16 as a whole around the drum 17 according to the left-hand rule, with the end in a free state.

[0178] The working process of the wire harness retracting and releasing device of the present invention is as follows:

[0179] See also Fig.11 , Fig.11 A relative position diagram of the lever assembly, the limit block, the reset block, the movable block, and the pawl when the wire harness retracting and releasing device provided in the embodiment of the present application is in the initial state. In the initial state, the wire harness 16 is wound on the roller 17 and the end is in a free state, and the lever 11 is located between the limit block 7 and the first pawl 6a. The first pawl 6a can prevent the movable disk 4 and the movable disk cover 5 from rotating clockwise, and the second pawl 6b can prevent the movable disk 4 and the movable disk cover 5 from rotating counterclockwise. Under the action of the first cylindrical compression spring 21a and the second cylindrical compression spring 21b, the two sets of ratchets and pawls are in a clamped state at this time, so the movable disk 4 and the movable disk cover 5 cannot rotate in any direction. The second cylindrical compression spring 21b is not drawn in the figure.

[0180] Pull the free end of the wire harness 16 to stretch it, and the rotating shaft 15, the roller 17 and the telescopic lever assembly will rotate counterclockwise together; at this time, the movable disk 4 and the movable disk 5 are still clamped and cannot rotate. Since one side of the lever 11 is in an arc shape, it will pass through the limit block 7, the reset block 8, and the movable block 9 in sequence, and since all three blocks have limits, they will not slide counterclockwise; at this time, the lever 11 rotates to between the movable block 9 and the second ratchet 6b, and comes into contact with the second ratchet 6b.

[0181] See also Fig.12 , Fig.12 A diagram showing the relative positions of the lever assembly, the limit block, the reset block, the movable block, and the pawl when the wire harness retracting device provided in the embodiment of the present application is performing a wire harness extension operation. The free end of the wire harness 16 is continuously pulled to extend it, and at this time, the lever 11 squeezes the toggle block on the second pawl 6b and causes the second pawl 6b to rotate, thereby causing the ratchet to disengage from the second ratchet wheel 2b; since the limit is released, the movable disk 4 and the movable disk cover 5 can rotate counterclockwise at this time, so that the wire harness can be continuously extended.

[0182] See also Fig.13 , Fig.13 A diagram showing the relative positions of the lever assembly, the limit block, the reset block, the movable block, and the pawl when the wire harness retracting and releasing device provided in the embodiment of the present application interrupts the wire harness extension operation. When the extension of the wire harness 16 needs to be interrupted, the free end of the wire harness 16 can be released, and at this time, the lever 11 no longer squeezes the toggle block on the second pawl 6b, and under the action of the second cylindrical compression spring 21b, the second pawl 6b is engaged with the second ratchet 2b, and the rotation of the movable disk 4 and the movable disk cover 5 is restricted; then the telescopic lever assembly rotates clockwise together with the rotating shaft 15 and the roller 17, and when the lever 11 contacts the movable block 9, the second tension spring 20b connected to the movable block 9 has a smaller stiffness coefficient k, so the lever 11 is rotated clockwise. The rod 11 will not retract into the lever sleeve 10, but will drive the movable block 9 to rotate clockwise together. When the movable block 9 is blocked by the limit column, it stops rotating. At this time, the special-shaped blocking block on the movable block 9 will block the reset block 8. The lever 11 will retract into the lever sleeve 10 under the action of the inclined surface of the movable block 9, and then pass through the movable block 9, and finally reach between the reset block 8 and the limit block 7, and is blocked by the limit block 7 and cannot continue to rotate. The movable block 9 slides to the initial position under the action of the first tension spring 21a.

[0183] In the current state, two operations can be performed, namely, continuing to extend the wire harness 16 and retracting the wire harness 16. These two operations are described in detail below.

[0184] 1) Continue to extend the wire harness 16. Fig.13In the state shown, the free end of the harness 16 is pulled to extend it a large distance, and the rotating shaft 15, the roller 17 and the telescopic lever assembly will rotate counterclockwise together; at this time, the movable disk 4 and the movable disk 5 are still clamped and cannot rotate. Since one side of the lever 11 is in an arc shape, it will sequentially pass through the reset block 8 and the movable block 9, and since both of these blocks have limited positions, they will not slide counterclockwise; at this time, the lever 11 rotates to between the movable block 9 and the pawl 6b and contacts the pawl 6b; the free end of the harness 16 can be extended by continuing to pull it. The specific principle has been explained above and will not be repeated here;

[0185] 2) Retract the wiring harness 16. Fig.13 In the state shown, the free end of the harness 16 is pulled to extend it a short distance, and the shaft 15, the roller 17 and the telescopic lever assembly rotate counterclockwise together; at this time, the movable disk 4 and the movable disk 5 are still clamped and cannot rotate, and since one side of the lever 11 is in an arc shape, it will pass through the reset block 8; at this time, the free end of the harness is released, and under the action of the torsion spring 22, the shaft 15, the roller 17 and the telescopic lever assembly rotate clockwise together; when the lever 11 contacts the reset block 8, since the stiffness coefficient k of the first tension spring 20a connected to the reset block 8 is small, the lever 11 will not retract into the lever sleeve 10, but drive the reset block 8 to return to the reset state. The first pawl 6a and the second pawl 6a are connected to the movable plate 4 and the movable plate 4 is connected to the movable plate 4. When the movable plate 4 is in the state of rotation, the movable plate 4 and the movable plate cover plate 5 are connected to the movable plate 4. When the movable plate 4 is in the state of rotation, the movable plate 4 and the movable plate cover plate 5 are connected to the movable plate 4. When the movable plate 4 is in the state of rotation, the movable plate 4 and the second pawl 6a are connected to the movable plate 4. When the movable plate 4 is in the state of rotation, the movable plate 4 and the second pawl 6a are connected to the movable plate 4. When the movable plate 4 is in the state of rotation, the movable plate 4 and the second pawl 6a are connected to the movable plate 4. When the movable plate 4 is in the state of rotation, the movable plate 4 and the second pawl 6a are connected to the movable plate 4. Fig.14 shown.

[0186] In summary, the wire harness retracting and releasing device of the present invention includes a base for providing support for the ratchet, pad, rotating shaft, and torsion spring fixing seat. The unfolding length of the wire harness of the present invention is adjustable. The user only needs to stretch the wire harness to an appropriate length and release it, and the wire harness can be automatically and securely locked.

[0187] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed by the present invention shall still be covered by the claims of the present invention.

Claims

1. A wire harness retracting device, characterized in that: include: The base (1) is used to provide support for the ratchet (2), the cushion block (3), the rotating shaft (15), and the torsion spring fixing seat (23); The through hole on the left support plate of the base (1) is used to pass one end of the rotating shaft (15), and the threaded hole on the left support plate of the base (1) is used to install the ratchet (2) and the cushion block (3); The through hole on the right support plate of the base (1) is used to pass the other end of the rotating shaft (15), and the threaded hole on the right support plate of the base (1) is used to install the torsion spring fixing seat (23); The rotating shaft (15) is provided with a wire harness retracting and releasing component.

2. A wire harness retracting and releasing device according to claim 1, characterized in that: The ratchet (2) comprises a first ratchet (2a) and a second ratchet (2b) of the same shape and size, and the cushion block (3) comprises a first cushion block (3a), a second cushion block (3b), a third cushion block (3c) and a fourth cushion block (3d); the ratchet teeth of the first ratchet (2a) and the second ratchet (2b) are opposite and the four first circular through holes thereon are aligned, and the first ratchet (2a) and the second ratchet (2b) are fixed to four threaded holes on the left support plate of the base (1) by four fixing screws respectively inserted into the first cushion block (3a), the second cushion block (3b), the third cushion block (3c) and the fourth cushion block (3d), so as to realize the installation and fixation of the ratchet (2) and the cushion block (3).

3. A wire harness retracting and releasing device according to claim 2, characterized in that: The wire harness retracting and releasing component comprises: A roller (17), the cylindrical sections at both ends of which are used to limit the position of the wire harness (16), the through circular hole along the axis of the roller (17) is used to pass the rotating shaft (15), and the keyway of the roller (17) is used to place a flat key (18); A flat key (18), which corresponds to the keyway of the rotating shaft (15) and the roller (17), and is used to realize the connection between the rotating shaft (15) and the roller (17); A wire harness (16) is wound around the drum (17), one end of the wire harness (16) is free, and a circular ring is fixed to the other end of the wire harness (16), and a threaded blind hole on the surface of the drum (17) is used to fix the circular ring of the drum (17); A telescopic lever assembly, which is mounted on the rotating shaft (15) and is located between the movable disk (4) and the movable disk cover plate (5); A limit card block (7), a reset card block (8), and a movable card block (9), all of which are installed between the movable disk (4) and the movable disk cover plate (5); Ratchet pawls (6), wherein the two ratchet pawls (6) are respectively mounted on the movable disk (4) and the movable disk cover plate (5), and are respectively engaged with the first ratchet wheel (2a) and the second ratchet wheel (2b); A shaft retaining ring (19) is installed at the end of the rotating shaft (15), namely, at one end of the right support plate close to the base (1); A first tension spring (20a) installed between the reset block (8) and the movable disk cover (5); A second tension spring (20b) installed between the movable clamping block (9) and the movable disk cover plate (5); a first cylindrical compression spring (21a) installed between the first pawl (6a) of the pawl (6) and the movable disk (4); A second cylindrical compression spring (21b) installed between the second pawl (6b) of the pawl (6) and the movable disk cover (5); A torsion spring (22), one end of which is connected to the rotating shaft (15) and the other end of which is connected to a torsion spring fixing base; A first cotter pin (24a) mounted on the end of the rotating shaft (15); A first split pin (24b) is mounted on the torsion spring fixing base.

4. A wire harness retracting and releasing device according to claim 3, characterized in that: The movable disk (4) comprises a movable disk body, and a second circular through hole (41) arranged on the movable disk body and close to one side of the roller (17), a limit block fixing hole (42), a movable block limit column (43), a reset block limit column (44), a first non-through arc groove (45), a first compression spring fixing plate (46), a first pawl mounting column (47), and a movable disk connecting column (48), wherein the second circular through hole (41) is used to pass through the rotating shaft (15), the movable disk connecting column (48) is used to connect the movable disk cover plate (5), and the reset block limit column (44) is used to limit the sliding range of the reset block (8) and prevent the reset block (8) from contacting with the limit block (7). The movable block limit column (43) is used to limit the sliding range of the movable block (9) and prevent the movable block (9) from contacting the reset block (8). The first non-through arc groove (45) cooperates with the arc bosses on the reset block (8) and the movable block (9) to achieve relative sliding. The cylindrical boss on the first compression spring fixing plate (46) is used to insert the first cylindrical compression spring (21a). The first pawl mounting column (47) cooperates with the circular through hole on the pawl (6). The two limit block fixing holes (42) correspond to the two threaded blind holes on the limit block (7), so that the limit block (7) can be fixed to the movable disk (4) by two screws.

5. A wire harness retracting and releasing device according to claim 4, characterized in that: The movable disk cover plate (5) comprises a movable disk cover plate body, and a first tension spring connecting column (51) arranged on the movable disk cover plate body and close to the roller (17), and a third circular through hole (52), a through arc groove (53), a second non-through arc groove (54), a second compression spring fixing plate (55), a second pawl mounting column (56), and a movable disk connecting hole (57) arranged on the movable disk cover plate body and close to the movable disk (4). The third circular through hole (52) is used to pass through the rotating shaft (15), and the movable disk connecting hole (57) is used to connect the movable disk The movable plate (4) is provided with a second non-through arc groove (54) which cooperates with the arc bosses on the reset block (8) and the movable block (9) to achieve relative sliding. The through arc groove (53) is used to pass through the second tension spring connecting column on the reset block (8) and the movable block (9). The cylindrical boss on the second compression spring fixing plate (55) is used to insert the second cylindrical compression spring (21b). The second pawl mounting column (56) cooperates with the circular through hole on the pawl (6). The grooves at the ends of the two first tension spring connecting columns (51) are used to clamp the circles at the ends of the tension spring (20).

6. A wire harness retracting and releasing device according to claim 5, characterized in that: The ratchet (6) comprises: A first ratchet pawl (6a), the ratchet teeth of the first ratchet pawl (6a) being engaged with the ratchet teeth of the first ratchet wheel (2a), and the shifting block of the first ratchet pawl (6a) shortens the length of the first cylindrical compression spring (21a) under the action of the shifting rod (11), so as to separate the first ratchet pawl (6a) from the first ratchet wheel (2a), thereby realizing the relative rotation of the movable disk (4) and the first ratchet wheel (2a); A second pawl (6b), the ratchet teeth of the second pawl (6b) are engaged with the ratchet teeth of the second ratchet wheel (2b), and the shifting block of the second pawl (6b) shortens the length of the second cylindrical compression spring (21b) under the action of the shifting rod (11), so that the second pawl (6b) is separated from the second pawl (6b), thereby realizing the relative rotation of the movable disk cover plate (5) and the second ratchet wheel (2b).

7. A wire harness retracting and releasing device according to claim 4, characterized in that: The special-shaped blocking block on the reset block (8) is used to cover the limit block (7), and the special-shaped blocking block on the movable block (9) is used to cover the reset block (8).

8. A wire harness retracting and releasing device according to claim 6, characterized in that: The telescopic lever assembly comprises a lever sleeve (10), a lever (11), a limiting column (12), and a square compression spring (13). The lever sleeve (10) is provided with a rectangular through hole and a notch at one end for inserting the rotating shaft (15). The notch side of the lever sleeve (10) is provided with two circular through holes for fixing on the rotating shaft (15). The side of the lever sleeve (10) is provided with a waist-shaped through hole for restricting the movement of the limiting column (12). The front end of the lever (11) has an arc and can be inserted into the hole of the lever sleeve (10) as a whole. The lever (11) is provided with a threaded through hole. The limiting column (12) is provided with a thread and has a length greater than the thickness of the lever sleeve (10). The lever (11) can be inserted into the lever sleeve (10) to limit the position of the lever (11) in the lever sleeve (10). The outer contour of the square compression spring (13) is rectangular and can be inserted into the lever sleeve (10).

9. The wire harness retracting and releasing device according to claim 3, characterized in that: The wiring harness retractable component also includes: A first bushing (14a), which penetrates the rotating shaft (15) and is located between the inner side of the left support plate of the base (1) and the outer side of the movable disk (4); A second bushing (14b) which penetrates the rotating shaft (15) and is located between the outer side of the movable disc cover (5) and the roller (17); A third bushing (14c) is inserted into the rotating shaft (15) and is located between the roller (17) and the inner side of the right support plate of the base (1).

10. The wire harness retracting and releasing device according to claim 3, characterized in that: The torsion spring fixing seat (23) comprises: A first torsion spring fixing seat (23a), one end of which is fixed to the right support plate of the base (1) by means of screws, and the circular hole on the other end is inserted into the first cotter pin (24a); A second torsion spring fixing seat (23b) has one end fixed to the right support plate of the base (1) by means of screws, a round hole on the other end is inserted into the first cotter pin (24b), and a narrow slit formed between the first torsion spring fixing seat (23a) and the second torsion spring fixing seat (23b) is inserted into the end of the torsion spring (22).

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