A free-stop household appliance cord reel and its working method

Abstract

The present invention discloses a free-stop household appliance cord reel, comprising: a base plate, on which a coil base is slidably provided, the coil base and the base plate are connected by a base reset spring, a ratchet coil is sleeved on the coil base, and the ratchet coil and the coil base are connected by a winding spring; a pawl, which is hinged on the base plate and cooperates with the ratchet coil; a pawl reset lever, which is provided on the coil base and cooperates with the pawl; a retaining hook, which is provided on the coil base and keeps the hook in cooperation with the base plate; and also includes a working method of the household appliance cord reel; a full-gear ratchet and pawl are used to achieve the stop of the cable, accurately control the extension and contraction degree of the cable, and make it more comfortable to use. At the same time, through the slidable coil base and the retaining hook, the ratchet and the pawl have two states of cooperation and separation by means of the pulling force of the cable, so that the pawl only affects the expansion of the cable but does not affect the contraction of the cable, and there is no need to manually adjust the pawl, which is easy to use.

Description

Technical Field

[0001] The invention belongs to the technical field of household appliances, and in particular relates to a free-stop household appliance cord reel and a working method thereof. Background Art

[0002] A cable reel is a device that stores cables and delivers and recycles them when needed. In household appliances, it is often used to store power cords, open and close various cabinet doors and drawers, raise and lower storage facilities, etc. It has the advantages of small size, improved forest transition and neatness. Cam and pawl structures are commonly used. However, the cam uses friction to fix the cable, which has poor safety and is easy to get stuck. Therefore, ratchet reels are mostly used now.

[0003] While existing ratchet reels are safer and less prone to cable jams, they require manual separation of the pawl from the ratchet (e.g., CN204734439U), making them inconvenient to use. Furthermore, the telescopic structure on some data cable reels only allows for multiple stops, preventing them from stopping at the desired length at any time, making them less practical. Therefore, the present application addresses these issues and offers innovations and improvements to reels.

[0004] The current reels have the following main problems:

[0005] 1. Most of the current cable reels require manual separation of the pawl and ratchet connection, which is very inconvenient to retract the cable.

[0006] 2. Most of the current cable reels can only achieve multi-stage stops, cannot achieve follow-up stop action, cannot accurately control the unfolding and lifting degree of household items, and are not very practical. Summary of the Invention

[0007] Purpose of the invention: In order to overcome the above shortcomings, the purpose of the present invention is to provide a free-stop household appliance cord reel and a working method thereof, which adopts a full-gear ratchet and pawl to realize the follow-up stop of the cable, accurately control the extension and contraction degree of the cable, and make it more comfortable to use. At the same time, through the sliding coil base and the retaining hook, the ratchet and the pawl have two states of engagement and separation with the help of the pulling force of the cable, so that the pawl only affects the expansion of the cable and does not affect the contraction of the cable. There is no need to manually adjust the pawl, which is easy to use.

[0008] Technical solution: In order to achieve the above-mentioned purpose, the present invention provides a free-stop household appliance cord reel, comprising:

[0009] A base plate, on which a coil base is slidably provided, the coil base and the base plate being connected by a base return spring, a ratchet coil being sleeved on the coil base, and the ratchet coil and the coil base being connected by a coil spring;

[0010] a pawl hinged on the base plate, the pawl cooperating with the ratchet coil;

[0011] The pawl reset lever is arranged on the coil base, and the pawl reset lever cooperates with the pawl;

[0012] The retaining hook is arranged on the coil base, and the retaining hook cooperates with the substrate.

[0013] In the present invention, the arrangement of the reel adopts the full-gear ratchet and pawl cooperation to realize the random stop of the cable, accurately control the telescopic degree of the cable, and is more comfortable to use. At the same time, through the slidable coil base and the retaining hook, with the help of the pulling force of the cable, the ratchet and pawl have two states of cooperation and separation, so that the pawl only affects the deployment of the cable and does not affect the contraction of the cable, and there is no need to manually adjust the pawl, which is convenient to use.

[0014] The retaining hook described in the present invention includes an installation groove, a limiting hook, a retaining block and a reset block. The installation groove is arranged on the coil base, the limiting hook is embedded in the installation groove, one end of the limiting hook is provided with a "冂"-shaped bend, and the height of the "冂"-shaped bend is greater than the height of the retaining block;

[0015] The substrate is provided with a retaining block, the retaining block cooperates with the "冂"-shaped bend, and a reset block is arranged at one end of the retaining block far from the limiting hook.

[0016] In the present invention, the arrangement of the retaining hook makes the reel always remain in the state of cooperating with the pawl when the cable is deployed through the cooperation of the limiting hook and the retaining block, ensuring the normal function of the pawl.

[0017] In the present invention, the setting of the "冂"-shaped bend can make way for the retaining block and avoid conflict with the retaining block.

[0018] The surface of the retaining block described in the present invention is provided with an inlet groove inclined surface, a retaining groove and a falling-preventing groove inclined surface. The inlet groove inclined surface is arranged at one end of the retaining block close to the limiting hook, the inlet groove inclined surface is inclined at an angle relative to the axis line of the limiting hook, the retaining groove is arranged at one end of the retaining block far from the limiting hook, and a falling-preventing groove inclined surface is arranged on one side of the retaining groove far from the inlet groove inclined surface; a reset inclined surface is arranged at one end of the reset block close to the retaining block, one end of the reset inclined surface extends into the retaining groove, and the reset inclined surface cooperates with the falling-preventing groove inclined surface.

[0019] In the present invention, the arrangement of the retaining block and the reset block makes the limiting hook realize two states of fixation and loosening through the guidance of the inclined surface, has a simple structure, good fixing property to the coil base, and is not easy to loosen.

[0020] The limiting hook described in the present invention is made of an elastic material.

[0021] The position-limiting hook of the present invention is made of elastic material to protect the hook and prevent it from breaking and wearing out.

[0022] The pawl described in the present invention includes a hinged column, a pawl body, a limiting column and a pawl spring. A hinged column is provided on the base plate, and the pawl body is sleeved on the hinged column. The pawl body includes a pawl part at one end and a limiting part at the other end. The pawl part cooperates with the ratchet coil, and the limiting part is connected to the pawl spring. The end of the pawl spring away from the limiting part is fixed on the base plate; the base plate is fixed with a limiting column, and the limiting column is provided on both sides of the limiting part.

[0023] The setting of the pawl described in the present invention limits the pawl body to one side of the two limiting columns through the thrust of the pawl spring on the pawl body, so that the pawl body has two states of engagement and separation with the ratchet wheel, and quickly separates from the ratchet wheel when the cable is retracted, facilitating the retraction of the cable.

[0024] The ratchet coil described in the present invention includes a coil accommodating disk and a ratchet gear. The coil accommodating disk is sleeved on the coil base. A ratchet gear is provided on one side of the coil accommodating disk. The ratchet gear cooperates with a pawl. The ratchet gear adopts a full gear.

[0025] The arrangement of the ratchet coil in the present invention adopts a full gear, and the pawl can engage with the ratchet at any position, thereby improving the adjustment accuracy of the cable length.

[0026] The pawl reset lever of the present invention is sleeved on the coil base, and a check column is provided on one side of the pawl reset lever to limit the pawl reset lever; one end of the pawl reset lever is connected to the base plate through a spring.

[0027] The pawl reset lever of the present invention adopts a check column to limit the pawl reset lever, thereby preventing the pawl reset lever from moving at will. At the same time, the pawl reset lever does not need to be completely fixed, which is convenient for replacement and production.

[0028] The operating method of the free-stop household appliance cord reel described in the present invention specifically includes the following steps:

[0029] Step 1: Pull the coil to drive the coil base to slide, so that the ratchet coil contacts and cooperates with the pawl. At the same time, the coil spring contracts to keep the hook and the coil base moving synchronously.

[0030] Step 2: Release the coil, the retaining hook hooks into the retaining groove, preventing the coil base from retracting, and the pawl prevents the coil base from rotating, and the coil stops;

[0031] Step 3: Pull the coil again, the retaining hook moves out of the retaining groove along the reset block, and the ratchet coil further pushes the pawl to separate from it;

[0032] Step 4: Release the coil, and the coil base is reset by the elastic force of the base reset spring, while the coil spring pulls the coil back;

[0033] Step 5: The pawl reset lever pushes the pawl to reset.

[0034] The operating method of the free-stop household appliance cord reel described in the present invention specifically includes the following steps:

[0035] When the coil is pulled, the retaining hook moves along the slot entry slope; when the coil is stopped, the retaining hook falls into the retaining slot; when the coil is pulled again, the retaining hook moves along the reset slope; when the coil is stopped again, the retaining hook is reset along the anti-fall slot slope.

[0036] It can be seen from the above technical solution that the present invention has the following beneficial effects:

[0037] 1. The free-stop household appliance cord reel and its working method described in the present invention adopts a full-gear ratchet and a pawl to achieve the free stopping of the cable, accurately control the extension and retraction degree of the cable, and make it more comfortable to use.

[0038] 2. The free-stop household appliance cord reel and its working method described in the present invention, through a slidable coil base and a retaining hook, uses the pulling force of the cable to make the ratchet and the pawl have two states: engaged and disengaged, so that the pawl only affects the expansion of the cable and does not affect the contraction of the cable. There is no need to manually adjust the pawl, and it is easy to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0040] Figure 2 This is a structural diagram of the present invention in a non-working state;

[0041] Figure 3 It is a schematic rear view of the structure of the present invention in a non-working state;

[0042] Figure 4 It is a schematic diagram of the structure of the present invention in the expanded and stopped states;

[0043] Figure 5 It is a rear view schematic diagram of the structure of the present invention in the expanded and stopped states;

[0044] Figure 6 This is a schematic structural diagram of the present invention in a retracted state;

[0045] Figure 7 It is a rear view schematic diagram of the structure of the present invention in the retracted state;

[0046] In the figure: substrate - 1, coil base - 2, base return spring - 3, ratchet coil - 4, coil accommodating plate - 41, ratchet gear - 42, winding spring - 5, pawl - 6, hinge post - 61, pawl body - 62, limit post - 63, pawl spring - 64, pawl return lever - 7, anti - reverse post - 71, retaining hook - 8, mounting groove - 81, limit hook - 82, retaining block - 83, slot - entry inclined surface - 831, retaining groove - 832, anti - falling groove inclined surface - 833, return block - 84, return inclined surface - 841. Detailed implementation mode

[0047] The present invention will be further clarified below in conjunction with the accompanying drawings and specific embodiments.

[0048] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions from beginning to end. The embodiments described below by referring to the accompanying drawings are exemplary and are intended to explain the present invention, and should not be construed as a limitation to the present invention.

[0049] Embodiment 1

[0050] As Figure 1-7 shown, a free - stop household appliance wire winder includes:

[0051] A substrate 1, on which a coil base 2 is slidably arranged. The coil base 2 and the substrate 1 are connected in cooperation through a base return spring 3. A ratchet coil 4 is sleeved on the coil base 2, and the ratchet coil 4 and the coil base 2 are connected in cooperation through a winding spring 5;

[0052] A pawl 6, which is hinged to the substrate 1, and the pawl 6 cooperates with the ratchet coil 4;

[0053] A pawl return lever 7, which is arranged on the coil base 2, and the pawl return lever 7 cooperates with the pawl 6;

[0054] A retaining hook 8, which is arranged on the coil base 2, and the retaining hook 8 cooperates with the substrate 1.

[0055] In this embodiment, the retaining hook 8 includes a mounting groove 81, a limit hook 82, a retaining block 83 and a return block 84. The mounting groove 81 is arranged on the coil base 2, and the limit hook 82 is embedded in the mounting groove 81. One end of the limit hook 82 is provided with a "冂"-shaped bend, and the height of the "冂"-shaped bend is greater than the height of the retaining block 83;

[0056] The substrate 1 is provided with a retaining block 83, the retaining block 83 cooperates with the "冂"-shaped bend, and a return block 84 is arranged at one end of the retaining block 83 away from the limit hook 82.

[0057] The surface of the retaining block 83 described in this embodiment is provided with a groove entry bevel 831, a retaining groove 832 and an anti-fall groove bevel 833. The groove entry bevel 831 is provided at the end of the retaining block 83 close to the limiting hook 82, and the groove entry bevel 831 is inclined at an angle relative to the axial center line of the limiting hook 82. The retaining groove 832 is provided at the end of the retaining block 83 away from the limiting hook 82, and the anti-fall groove bevel 833 is provided on the side of the retaining groove 832 away from the groove entry bevel 831; the reset block 84 is provided with a reset bevel 841 close to the end of the retaining block 83, and one end of the reset bevel 841 extends into the retaining groove 832, and the reset bevel 841 cooperates with the anti-fall groove bevel 833.

[0058] The limiting hook 82 described in this embodiment is made of elastic material.

[0059] The pawl 6 described in this embodiment includes a hinge column 61, a pawl body 62, a limiting column 63 and a pawl spring 64. The hinge column 61 is provided on the base plate 1, and the pawl body 62 is sleeved on the hinge column 61. The pawl body 62 includes a pawl portion at one end and a limiting portion at the other end. The pawl portion cooperates with the ratchet coil 4, and the limiting portion is connected to a pawl spring 64. The end of the pawl spring 64 away from the limiting portion is fixed on the base plate 1; the base plate 1 is fixed with a limiting column 63, and the limiting column 63 is provided on both sides of the limiting portion.

[0060] The ratchet coil 4 described in this embodiment includes a coil accommodating disk 41 and a ratchet gear 42. The coil accommodating disk 41 is sleeved on the coil base 2. A ratchet gear 42 is provided on one side of the coil accommodating disk 41. The ratchet gear 42 cooperates with the pawl 6; the ratchet gear 42 is a full gear.

[0061] The pawl reset lever 7 described in this embodiment is sleeved on the coil base 2, and a non-return column 71 is provided on one side of the pawl reset lever 7. The non-return column 71 limits the pawl reset lever 7; one end of the pawl reset lever 7 is connected to the base plate 1 through a spring.

[0062] The working method of the free-stop household appliance cord reel described in this embodiment specifically includes the following steps:

[0063] Step 1: Pull the coil to drive the coil base 2 to slide, so that the ratchet coil 4 contacts and cooperates with the pawl 6. At the same time, the coil spring 5 contracts to keep the hook 8 and the coil base 2 moving synchronously;

[0064] Step 2: Release the coil, the retaining hook 8 hooks into the retaining groove 832, preventing the coil base 2 from retracting, and the pawl 6 prevents the coil base 2 from rotating, and the coil is stopped;

[0065] Step 3: Pull the coil again. The holding hook 8 disengages from the holding groove 832 along the reset block 84. At the same time, the ratchet coil 4 further pushes the pawl 6 to separate from it.

[0066] Step 4: Release the coil. The coil base 2 is reset under the elastic force of the base reset spring 3. At the same time, the winding spring 5 pulls the coil back.

[0067] Step 5: The pawl reset lever 7 pushes the pawl 6 to reset.

[0068] The working method of a free-stopping household appliance cord reel described in this embodiment specifically includes the following steps:

[0069] When pulling the coil, the holding hook 8 moves along the insertion groove inclined surface 831; when stopping pulling the coil, the holding hook 8 falls into the holding groove 832; when pulling the coil again, the holding hook 8 moves along the reset inclined surface 841; when stopping pulling the coil again, the holding hook 8 resets along the anti-falling groove inclined surface 833.

[0070] Embodiment 2

[0071] As Figure 1 shown, a free-stopping household appliance cord reel includes:

[0072] A substrate 1, on which a coil base 2 is slidably arranged. The coil base 2 is connected to the substrate 1 through a base reset spring 3. A ratchet coil 4 is sleeved on the coil base 2. The ratchet coil 4 is connected to the coil base 2 through a winding spring 5.

[0073] A pawl 6, which is hinged to the substrate 1. The pawl 6 cooperates with the ratchet coil 4.

[0074] A pawl reset lever 7, which is arranged on the coil base 2. The pawl reset lever 7 cooperates with the pawl 6.

[0075] A holding hook 8, which is arranged on the coil base 2. The holding hook 8 cooperates with the substrate 1.

[0076] The holding hook 8 described in this embodiment includes an installation groove 81, a limit hook 82, a holding block 83 and a reset block 84. An installation groove 81 is arranged on the coil base 2. The limit hook 82 is embedded in the installation groove 81. One end of the limit hook 82 is provided with a "冂"-shaped bend, and the height of the "冂"-shaped bend is greater than the height of the holding block 83.

[0077] The substrate 1 is provided with a holding block 83. The holding block 83 cooperates with the "冂"-shaped bend. One end of the holding block 83 away from the limit hook 82 is provided with a reset block 84.

[0078] The surface of the retaining block 83 described in this embodiment is provided with a groove entry bevel 831, a retaining groove 832 and an anti-fall groove bevel 833. The groove entry bevel 831 is provided at the end of the retaining block 83 close to the limiting hook 82, and the groove entry bevel 831 is inclined at an angle relative to the axial center line of the limiting hook 82. The retaining groove 832 is provided at the end of the retaining block 83 away from the limiting hook 82, and the anti-fall groove bevel 833 is provided on the side of the retaining groove 832 away from the groove entry bevel 831; the reset block 84 is provided with a reset bevel 841 close to the end of the retaining block 83, and one end of the reset bevel 841 extends into the retaining groove 832, and the reset bevel 841 cooperates with the anti-fall groove bevel 833.

[0079] The limiting hook 82 described in this embodiment is made of elastic material.

[0080] The pawl 6 described in this embodiment includes a hinge column 61, a pawl body 62, a limiting column 63 and a pawl spring 64. The hinge column 61 is provided on the base plate 1, and the pawl body 62 is sleeved on the hinge column 61. The pawl body 62 includes a pawl portion at one end and a limiting portion at the other end. The pawl portion cooperates with the ratchet coil 4, and the limiting portion is connected to a pawl spring 64. The end of the pawl spring 64 away from the limiting portion is fixed on the base plate 1; the base plate 1 is fixed with a limiting column 63, and the limiting column 63 is provided on both sides of the limiting portion.

[0081] The ratchet coil 4 described in this embodiment includes a coil accommodating disk 41 and a ratchet gear 42. The coil accommodating disk 41 is sleeved on the coil base 2. A ratchet gear 42 is provided on one side of the coil accommodating disk 41. The ratchet gear 42 cooperates with the pawl 6; the ratchet gear 42 is a full gear.

[0082] Example 3

[0083] like Figure 6-7 A free-stop household appliance cord reel is shown, comprising:

[0084] A base plate 1 is provided with a coil base 2 which is slidably mounted thereon. The coil base 2 is connected to the base plate 1 via a base return spring 3. A ratchet coil 4 is sleeved on the coil base 2. The ratchet coil 4 is connected to the coil base 2 via a coil spring 5.

[0085] A pawl 6 is hinged on the base plate 1 and cooperates with the ratchet coil 4;

[0086] A pawl reset lever 7 is provided on the coil base 2 and cooperates with the pawl 6;

[0087] A retaining hook 8 is provided on the coil base 2 and engages with the base plate 1. The pawl reset lever 7 described in this embodiment is sleeved on the coil base 2. A check post 71 is provided on one side of the pawl reset lever 7 to limit the position of the pawl reset lever 7. One end of the pawl reset lever 7 is connected to the base plate 1 via a spring.

[0088] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements can be made without departing from the principles of the present invention. These improvements should also be regarded as the scope of protection of the present invention.

Claims

1. A free-stop cord reel for household appliances, characterized by: Comprising: A substrate (1) on which a coil base (2) is slidably arranged. The coil base (2) is connected to the substrate (1) through a base return spring (3). A ratchet coil (4) is sleeved on the coil base (2), and the ratchet coil (4) is connected to the coil base (2) through a torsion spring (5); A pawl (6) which is hinged to the substrate (1) and cooperates with the ratchet coil (4); A pawl return lever (7) which is arranged on the coil base (2) and cooperates with the pawl (6); A holding hook (8) which is arranged on the coil base (2) and cooperates with the substrate (1); The holding hook (8) includes a mounting groove (81), a limit hook (82), a holding block (83) and a return block (84). A mounting groove (81) is arranged on the coil base (2), and the limit hook (82) is embedded in the mounting groove (81). One end of the limit hook (82) is provided with a "冂"-shaped bend, and the height of the "冂"-shaped bend is greater than the height of the holding block (83); A holding block (83) is arranged on the substrate (1), and the holding block (83) cooperates with the "冂"-shaped bend. A return block (84) is arranged at one end of the holding block (83) far from the limit hook (82); An insertion groove inclined surface (831), a holding groove (832) and a falling prevention groove inclined surface (833) are arranged on the surface of the holding block (83). The insertion groove inclined surface (831) is arranged at one end of the holding block (83) close to the limit hook (82), and the insertion groove inclined surface (831) is inclined at an angle relative to the axis line of the limit hook (82). The holding groove (832) is arranged at one end of the holding block (83) far from the limit hook (82), and a falling prevention groove inclined surface (833) is arranged on one side of the holding groove (832) far from the insertion groove inclined surface (831). A return inclined surface (841) is arranged at one end of the return block (84) close to the holding block (83), and one end of the return inclined surface (841) extends into the holding groove (832), and the return inclined surface (841) cooperates with the falling prevention groove inclined surface (833); The ratchet coil (4) includes a coil accommodating disc (41) and a ratchet gear (42). The coil accommodating disc (41) is sleeved on the coil base (2), and a ratchet gear (42) is arranged on one side of the coil accommodating disc (41), and the ratchet gear (42) cooperates with the pawl (6).

2. The free-stop household appliance cord reel according to claim 1, characterized in that: The limit hook (82) is made of an elastic material.

3. The free-stop household appliance cord reel according to claim 1, characterized in that: The pawl (6) includes a hinge column (61), a pawl body (62), a limiting column (63) and a pawl spring (64). The hinge column (61) is provided on the base plate (1). The pawl body (62) is sleeved on the hinge column (61). The pawl body (62) includes a pawl portion at one end and a limiting portion at the other end. The pawl portion cooperates with the ratchet coil (4). The limiting portion is connected to a pawl spring (64). The end of the pawl spring (64) away from the limiting portion is fixed to the base plate (1); the base plate (1) is fixed with the limiting column (63), and the limiting column (63) is provided on both sides of the limiting portion.

4. The free-stop household appliance cord reel according to claim 1, characterized in that: The ratchet gear (42) is a full gear.

5. The free-stop household appliance cord reel according to claim 1, characterized in that: The ratchet reset lever (7) is sleeved on the coil base (2), and a check column (71) is provided on one side of the ratchet reset lever (7), and the check column (71) limits the ratchet reset lever (7); one end of the ratchet reset lever (7) is connected to the base plate (1) through a spring.

6. The operating method of a free-stop household appliance cord reel according to claim 1, characterized in that: The specific steps include: Step 1: Pull the ratchet coil (4) to drive the coil base (2) to slide, so that the ratchet coil (4) and the pawl (6) come into contact and cooperate, and at the same time the coil spring (5) contracts to keep the hook (8) and the coil base (2) moving synchronously; Step 2: Release the ratchet coil (4), the retaining hook (8) hooks into the retaining groove (832), preventing the coil base (2) from retracting, and at the same time the pawl (6) prevents the coil base (2) from rotating, and the ratchet coil (4) stops; Step 3: Pull the ratchet coil (4) again, and the retaining hook (8) moves out of the retaining groove (832) along the reset block (84), while the ratchet coil (4) further pushes the pawl (6) to separate from it; Step 4: Release the ratchet coil (4), the coil base (2) is reset by the elastic force of the base reset spring (3), and at the same time the coil spring (5) pulls the ratchet coil (4) to retract; Step 5: The pawl reset lever (7) pushes the pawl (6) to reset.

7. The operating method of a free-stop household appliance cord reel according to claim 1, characterized in that: The specific steps include: When the ratchet coil (4) is pulled, the retaining hook (8) moves along the slot entry slope (831); when the ratchet coil (4) stops being pulled, the retaining hook (8) falls into the retaining slot (832); when the ratchet coil (4) is pulled again, the retaining hook (8) moves along the reset slope (841); when the ratchet coil (4) stops being pulled again, the retaining hook (8) is reset along the anti-fall slot slope (833).

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