TWI813454B - Coiling device - Google Patents

Abstract

A coiling device includes a case, a first coiling unit, a second coiling unit, an elastic member and a switching assembly. The first coiling unit is rotatably assembled with the case and has an annular toothed portion. The second coiling unit is rotatably assembled with the case. The switching assembly is disposed on the case. The switching assembly includes a switching member, a first ratcheting member and a second ratcheting member. The switching member is rotatable to locate in a first position or a second position. The first ratcheting member and the second ratcheting member normally spring against the annular toothed portion.

Description

reel

The present invention relates to a reel.

Press, medical wearing equipment (such as waist protectors, knee pads or rehabilitation shoes, etc.) generally used on the human body. In order to ensure that the wearing tool can tightly cover the human body to achieve a protective effect, the wearing tool will be tied with a drawstring. It is tight to the human body. After tightening, the thread body of the drawstring is knotted to prevent the thread body from loosening. However, this way of wearing is extremely inconvenient, so someone invented a buckle with an elastic fastener, and the thread system is worn Set inside the buckle, the elastic fastener presses and holds the thread body under normal conditions to prevent the thread body from sliding relative to the buckle. When in use, press the elastic fastener first and pull the free end of the thread body to make the thread body The protective gear can be tightened, and after tightening, the elastic fastener can be released so that the wire body is in a tight state and cannot slide relative to the buckle to prevent the wire body from loosening.

However, such conventional fasteners will cause the extension length of the free end of the thread to be too long after the thread is tightened on the protective gear. In this way, the free end of the thread is easily hooked on external objects, and accidents are prone to occur, and by The elastic fastener presses and fastens the wire body. The elastic fastener will inevitably fatigue under long-term use. In this case, the wire body may slide relative to the buckle due to insufficient force of the elastic fastener to hold the wire body. Wearing tools That is, it cannot cover the human body tightly, and there are shortcomings that need to be improved.

Therefore, it is necessary to provide a novel and progressive reel to solve the above problems.

The main purpose of the present invention is to provide a reel that can effectively tighten the thread body, is simple and quick to operate, and effectively prevents the thread body from loosening at will. In addition, it can prevent the free end of the thread body from being overextended and prone to accidents.

In order to achieve the above object, the present invention provides a reel, which includes a housing, a first reel unit, a second reel unit, an elastic member and a switching component. The first winding unit is mounted on the housing to rotate around an axial direction and is used to wind up at least one first wire body, and is provided with a ring tooth portion. The second winding unit is disposed on the housing to rotate around the axial direction and is used to wind up a second wire body. One of the first winding unit and the second winding unit is provided with a plurality of helical tooth parts, and the other is provided with a plurality of helical tooth parts. A plurality of engaging portions are provided. When the second winding unit rotates in a first direction, the helical tooth portions engage with the engaging portions to drive the first winding unit to move in conjunction. When the second winding unit rotates along a first direction, When rotating in the opposite direction of the first direction or the second direction, the helical tooth portions and the blocking portions perform tooth skipping so that the first winding unit does not move simultaneously with the second winding unit. The elastic member is provided between the housing and the second winding unit, so that the second winding unit has a tendency to rotate in the second direction. The switching component is provided on the housing and includes a switching member, a first ratcheting member and a second ratcheting member. The switching member rotates around the axis between a first position and a second position. The first ratcheting piece and the second ratcheting piece are normally spring-loaded against the ring tooth portion. Wherein, when the switching member is in the first position and the switching member abuts the first ratcheting member and does not engage with the ring tooth portion, the first winding unit can rotate along the first direction but not along the first direction. This second direction of rotation.

The following examples are only used to illustrate the possible implementation modes of the present invention, but are not intended to limit the scope of protection of the present invention.

Please refer to Figures 1 to 11, which show a preferred embodiment of the present invention. The reel of the present invention includes a housing 1, a first reel unit 2, a second reel unit 3, an elastic member 4 and a switch. Component 5.

The first winding unit 2 is disposed on the housing 1 to rotate around an axial direction and is used to wind up at least a first wire body 91 and is provided with a ring tooth portion 21 .

The second winding unit 3 is mounted on the housing 1 to rotate around the axial direction and is used to wind up a second wire body 92. In this embodiment, the winding unit 3 is mounted on a protective gear 93 (as shown in Figure 11 ), the first winding unit 2 is used to wind up the two first wire bodies 91. The two first wire bodies 91 are wound around the protective gear 93. One end of the second wire body 92 forms a free end. The first winding unit One of 2 and the second winding unit 3 is provided with a plurality of helical tooth portions 22, and the other is provided with a plurality of blocking portions 31. When the second winding unit 3 rotates in a first direction, the helical tooth portions 22 The first winding unit 2 is interlocked with the blocking portions 31 to drive the first winding unit 2 to move (as shown in FIGS. 4 and 5 ). When the second winding unit 3 rotates in a second direction opposite to the first direction, When the helical tooth portions 22 and the blocking portions 31 jump, the first winding unit 2 does not move simultaneously with the second winding unit 3. In this embodiment, the blocking portions 31 are grooves. , the helical tooth portions 22 are provided on the first winding unit 2 , and the blocking portions 31 are provided on the second winding unit 3 .

The elastic member 4 is provided between the housing 1 and the second winding unit 3 so that the second winding unit 3 has a tendency to rotate in the second direction. Therefore, when you want to tighten the protective gear 93, you only need to pull the second wire body 92 to make the second winding unit 3 rotate in the first direction and drive the first winding unit 2. The two first wire bodies 91 is rolled into the first winding unit 2, the protective gear 93 is tightened (as shown in Figures 4 and 5), and when the second wire body 92 stops pulling, the elastic member 4 will drive the The second winding unit 3 rotates in the second direction to wind the second wire body 92 back to the second winding unit 3 to prevent the free end of the second wire body 92 from being too long, but through the second winding unit 3. When rotating in the second direction, the helical tooth portions 22 and the blocking portions 31 perform tooth skipping, so that the first winding unit 2 will not be driven by the second winding unit 3 (as shown in Figure 4 and As shown in Figure 5), the protective gear 93 will not loosen.

The switching component 5 is provided in the housing 1 and includes a switching member 51, a first ratcheting member 52 and a second ratcheting member 53. The switching member 51 rotates around the axis in a first position and a second ratcheting member. Between the two positions, the first ratcheting member 52 and the second ratcheting member 53 normally spring against the ring tooth portion 21 .

When the switching member 51 is in the first position, the switching member 51 resists the first ratcheting member 52 and does not interfere with the ring tooth portion 21 , and the first winding unit 2 can move along the first direction and cannot rotate in the second direction, so the two first wire bodies 91 can only be retracted into the first winding unit 2 to tighten the protective gear 93 and the two first wire bodies 91 will not be rolled out of the first winding unit 2 . A winding unit 2 can prevent the protective gear 93 from loosening (as shown in Figures 4 and 5).

Therefore, the reel can effectively wind up the two first wire bodies 91 to tighten the protective gear 93 with simple and quick operation, and can effectively prevent the two first wire bodies 91 from loosening arbitrarily, and can also avoid the The free end of the second wire body 92 is excessively extended and accidents may easily occur.

Specifically, the ring tooth portion 21 is radially arranged around the first winding unit 2, the first ratcheting member 52 and the second ratcheting member 53 are elastic pieces and are symmetrically arranged on the housing 1. The ratcheting member 52 and the second ratcheting member 53 normally spring radially inwardly against the ring tooth portion 21 . In this embodiment, the switching member 51 includes two first latching protrusions 511 extending along the axial direction. When the switching member 51 rotates between the first position and the second position, the two first latching protrusions 511 extend along the axial direction. The two first latching protrusions 511 alternately push against the first ratcheting member 52 and the second ratcheting member 53 in the circumferential direction and disengage from the ring tooth portion 21 to smoothly brake the first ratcheting member 52 and the second ratcheting member 53 . The action of the ratcheting member 53.

Furthermore, the reel further includes two elastic abutments 6. The two elastic abutments 6 are provided on the housing 1 and slide along the axial direction between a blocking position and an idle position. The two elastic abutments 6 and One of the first winding unit 2 and the second winding unit 3 is assembled. When the switching member 51 is in the first position, the two elastic members 6 are normally in the blocking position and make the inclined The tooth portion 22 engages with the engaging portions 31 (as shown in FIGS. 7 and 8 ). When the switching member 51 is switched to the second position, the switching member 51 abuts the second ratcheting member 53 Without interfering with the ring tooth portion 21 , the first winding unit 2 can rotate in the second direction but not in the first direction, so that the two first wire bodies 91 can wind out the first winding unit. Unit 2, to loosen the protective gear 93 (as shown in Figure 6), the switching member 51 engages the second elastic resistor 6 to move the second elastic resistor 6 to the idle position, and the second elastic resistor 6 moves to the idling position. 6 is to drive the first winding unit 2 and the second winding unit 3 away from each other so that the helical tooth portions 22 do not interfere with the blocking portions 31 (as shown in Figures 9 and 10), so that The first winding unit 2 can rotate toward the second direction more smoothly without interfering with the second winding unit 3 .

Among them, the two elastic resistors 6 are arranged symmetrically, and a first notch 61 is provided on an outward side of the two elastic resistors 6. The switching member 51 is annular and has two second catches protruding along the axial direction. 512, each second latching protrusion 512 is provided with a slope 513 along one side of the circumferential direction. When the switching member 51 is in the first position, the two second latching protrusions 512 do not contact the two elastic resistors 6 so that the The two elastic resisting members 6 are in the blocking position. When the switching member 51 moves toward the second position, the two second latching protrusions 512 respectively abut against the two elastic resisting members 6 through the two inclined surfaces 513 so that the two elastic resisting members 6 are pressed against each other. The elastic resisting member 6 slides to the idle position to smoothly resist the movement of the second elastic resisting member 6 along the axial direction. In this embodiment, the two elastic members 6 are provided with a second notch 62 on an inward side, and the first winding unit 2 is provided with a flange 23 in a radial direction, and the flange 23 is rotatably limited to the second winding unit 2 . The two slots 62 are used to smoothly drive the first winding unit 2 to move along the axial direction.

Preferably, the radial peripheral wall of the housing 1 is further provided with at least one slide groove 11, and the switching member 51 is provided with at least one operating portion 514 radially outward, and each of the operating portions 514 is slidably disposed on one of the casing 1 along the circumferential direction. The chute 11 extends out of the housing 1, and each operating part 514 can smoothly drive the switching member 51 to rotate. In this embodiment, the housing 1 is provided with two chute 11 and the switching member 51 is provided with There are two operating parts 514 respectively slidably provided on the two slide grooves 11 .

In detail, the housing 1 includes a first housing member 12 and a second housing member 13 that are joined together. The housing 1 further includes a spindle 14, which is non-rotatably mounted on the first shell. Between the shell 12 and the second shell 13, the first winding unit 2 and the second winding unit 3 are pivotally connected to the spindle 14, and the elastic member 4 is assembled between the spindle 14 and the second winding Between the units 3, the elastic member 4 is a scroll spring. One end of the elastic member 4 at the center is fixed to the mandrel 14, and one end of the elastic member 4 on the outside is buckled to the second winding unit 3, so that the The second winding unit 3 has a tendency to rotate in the second direction.

In this embodiment, the mandrel 14 is provided with an annular groove 141, and one end of the mandrel 14 is provided with a non-circular section 142. The first shell 12 is provided with at least two petal-shaped claw portions 15, and the second shell is provided with a ring groove 141. The member 13 is provided with a non-circular hole 16, the spindle 14 passes through the first shell member 12, and the at least two claw portions 15 are engaged with the annular groove 141 to connect the spindle 14 and the first shell. The non-circular section 142 is inserted into the non-circular hole 16 to prevent the spindle 14 from rotating relative to the first shell 12 and the second shell 13 .

In addition, as shown in Figure 3, each helical tooth portion 22 includes a connected helical tooth component 25 and an elastic piece 24. One end of the elastic piece 24 is connected to the first winding unit 2, and the other end forms a free end and is connected with the first winding unit 2. The helical gear members 25 are connected so that each of the helical gear members 25 can have an elastic release function and elastically engage with the blocking portions 31; the non-circular section 142 is provided with a slot 17, and the elastic member 4 is located at one end of the center Sandwiched between the slit 17 , one end of the elastic member 4 on the outer side forms a hook portion 41 , and the hook portion 41 is engaged with the hook groove 32 of the second winding unit 3 so that the second winding unit 3 can move along the groove 17 . After being rotated in the first direction, it can have an elastic restoring force; each elastic resisting member 6 includes a resisting member 63 and a return spring 65, and the return spring 65 of each elastic resisting member 6 is sleeved on one of the resisting members 63. The protruding pillar 64 abuts against the first shell member 12 so as to push the elastic member 6 toward the blocking position normally.

1: Shell 11:Chute 12:The first shell 13:Second shell 14: mandrel 141: Ring groove 142: Non-circular segment 15:Claws 16:Non-circular hole 17: Slotting 2: The first winding unit 21: Ring tooth part 22: Helical gear part 23:Flange 24:Shrapnel 25: Helical gear parts 3: Second winding unit 31: Card Arrival Department 32: hook groove 4: Elastic parts 41: hook part 5:Switch components 51:Switching piece 511: The first stuck convex 512:Second stuck convex 513: Incline 514:Operation Department 52: First ratcheting piece 53: Second ratcheting piece 6: elastic parts 61:First missing slot 62:Second slot 63: Top support piece 64:Protruding pillar 65:Return spring 91:First line body 92:Second line body 93: Protective gear

Figure 1 is a perspective view of a preferred embodiment of the present invention. Figures 2 and 3 are exploded views of a preferred embodiment of the present invention. Figure 4 is a schematic diagram of the operation of the second winding unit according to a preferred embodiment of the present invention. 5 to 6 are operational schematic diagrams of the first winding unit according to a preferred embodiment of the present invention. 7 to 8 are side cross-sectional operating views of a preferred embodiment of the present invention. 9 to 10 are another side sectional operational view of a preferred embodiment of the present invention. Figure 11 is an assembly diagram of a preferred embodiment of the present invention.

1: Shell

11:Chute

12:The first shell

13:Second shell

14: mandrel

51:Switching piece

514:Operation Department

91:First line body

92:Second line body

Claims (10)

A reel including: a shell; A first winding unit is provided on the housing to rotate around an axial direction and is used to wind up at least one first wire body, and is provided with a ring tooth portion; A second winding unit is provided on the housing to rotate around the axial direction and is used to wind up a second wire body. One of the first winding unit and the second winding unit is provided with a plurality of helical tooth parts, and the other is provided with a plurality of helical tooth parts. It is provided with a plurality of engaging portions. When the second winding unit rotates in a first direction, the helical tooth portions engage with the engaging portions to drive the first winding unit to move in conjunction. When the second winding unit When rotating in a second direction opposite to the first direction, the helical tooth portions and the blocking portions jump to prevent the first winding unit from moving simultaneously with the second winding unit; An elastic member is provided between the housing and the second winding unit so that the second winding unit has a tendency to rotate in the second direction; A switching component is provided on the housing and includes a switching member, a first ratcheting member and a second ratcheting member. The switching member rotates around the axial direction between a first position and a second position, The first ratcheting member and the second ratcheting member normally spring against the ring tooth portion; Wherein, when the switching member is in the first position and the switching member abuts the first ratcheting member and does not engage with the ring tooth portion, the first winding unit can rotate along the first direction but not along the first direction. This second direction of rotation. The reel according to claim 1, wherein the ring tooth portion is radially arranged around the first reel unit, the first ratcheting member and the second ratcheting member are elastic pieces and are symmetrically arranged on the housing, and the The first ratcheting member and the second ratcheting member normally spring radially inwardly against the ring tooth portion. The reel according to claim 2, wherein the switching member includes two first latching protrusions extending along the axial direction. When the switching member rotates between the first position and the second position, The two first latching protrusions are alternately pressed against the first ratcheting member and the second ratcheting member along the circumferential direction to separate from the ring tooth portion. The reel according to claim 1, further comprising two elastic abutments, which are disposed on the housing and slide along the axial direction between a blocking position and an idle position. The two elastic abutments are connected to One of the first winding unit and the second winding unit is assembled. When the switching member is in the first position, the two elastic members are normally in the blocking position and make the helical tooth parts and the When the blocking part is blocked, when the switching part is switched to the second position, the switching part resists the second ratcheting part and does not interfere with the ring tooth part, and the first winding unit can move along the Rotate in the second direction and cannot rotate in the first direction. The switching member engages the second elastic resistor to move the second elastic resistor to the idle position. The second elastic resistor drives the first winding unit and the The second winding unit is far away from each other so that the helical tooth parts do not interfere with the blocking parts. The reel according to claim 4, wherein the two elastic abutments are arranged symmetrically, a first notch is provided on an outward side of the two elastic abutments, and the switching element is annular and protrudes along the axial direction. There are two second latching protrusions. Each second latching protrusion is provided with a slope along one side of the circumferential direction. When the switching member is in the first position, the two second latching protrusions do not contact the two elastic resisting members so that the two second latching protrusions are not in contact with the two elastic resisting members. The elastic resisting member is located at the blocking position. When the switching member moves toward the second position, the two second latching protrusions respectively abut against the two elastic resisting members through the two inclined surfaces, so that the two elastic resisting members slide to the second position. idle position. The reel as claimed in claim 5, wherein a second slot is provided on an inward side of the two resilient members, and a flange is provided radially on the first reel unit, and the flange is rotatably limited to the two Second slot. The reel according to claim 1, wherein the radial peripheral wall of the housing is further provided with at least one slide groove, and the switching member is provided with at least one operating portion radially outward, and each of the operating portions is slidably provided in the circumferential direction. The chute extends out of the housing. The reel according to claim 1, wherein the housing includes a first housing member and a second housing member that are joined together and covered, and the housing further includes a spindle, which is non-rotatably mounted on the third shell. Between a shell and the second shell, the first winding unit and the second winding unit are pivotally connected to the spindle, and the elastic member is assembled between the spindle and the second winding unit. The reel of claim 8, wherein the spindle is provided with an annular groove, one end of the spindle is provided with a non-circular section, the first shell is provided with at least two petal-shaped claws, and the second shell is The component is provided with a non-circular hole, the spindle passes through the first shell component and the at least two claw parts are engaged with the ring groove, and the non-circular section is inserted into the non-circular hole. The reel according to claim 3, further comprising two elastic abutments, which are provided on the housing and slide along the axial direction between a blocking position and an idle position, and the two elastic abutments are connected to One of the first winding unit and the second winding unit is assembled. When the switching member is in the first position, the two elastic members are normally in the blocking position and make the helical tooth parts and the When the blocking part is blocked, when the switching part is switched to the second position, the switching part resists the second ratcheting part and does not interfere with the ring tooth part, and the first winding unit can move along the Rotate in the second direction and cannot rotate in the first direction. The switching member engages the second elastic resistor to move the second elastic resistor to the idle position. The second elastic resistor drives the first winding unit and the The second winding unit is far away from each other so that the helical tooth portions do not interfere with the blocking portions; the two elastic resisting members are arranged symmetrically, and a first notch is provided on one side of the two elastic resisting members toward the outside. The switching member is annular and has two second latching protrusions protruding along the axial direction. Each second latching protrusion is provided with an inclined surface along one side of the circumferential direction. When the switching member is in the first position, the two second latching protrusions Not in contact with the two elastic resistors so that the two elastic resistors are in the blocking position. When the switching member moves toward the second position, the two second latching protrusions respectively engage with the two elastic resistors through the two inclined surfaces. The two elastic members are pushed against each other so that the two elastic members slide to the idle position; the inward side of the two elastic members is provided with a second notch, and the first winding unit is provided with a flange in the radial direction, and the flange is rotatable The ground limit is located at the two second slots; the radial peripheral wall of the housing is also provided with at least one slide groove, and the switching member is provided with at least one operating part radially outward, and each operating part is slidably provided on an axis along the circumferential direction. The chute extends out of the casing; the casing includes a first shell and a second shell that are joined together, and the casing also includes a spindle, which is non-rotatably mounted on the first shell. Between the shell and the second shell, the first winding unit and the second winding unit are pivotally connected to the spindle, and the elastic member is assembled between the spindle and the second winding unit; the spindle An annular groove is provided, one end of the mandrel is provided with a non-circular section, the first shell member is provided with at least two petal-shaped claws, the second shell member is provided with a non-circular hole, and the mandrel passes through The first shell member and the at least two claws are engaged with the ring groove, and the non-circular section is inserted into the non-circular hole; the elastic member is a scroll spring, and one end of the elastic member at the center is fixed to the core The shaft, the outer end of the elastic member is buckled with the second winding unit; the blocking parts are grooves; each of the helical tooth parts includes a connected helical tooth component and a spring piece, one end of the spring piece is connected to The other end of the first winding unit forms a free end and is connected to the helical gear member; the non-circular section is provided with a sectional groove, and one end of the elastic member located at the center is sandwiched in the sectional groove; one end of the elastic member is located on the outside A hook portion is formed, and the hook portion snaps into a hook groove of the second winding unit; each elastic member includes an abutment member and a return spring, and the return spring of each elastic member is sleeved on the abutment member. One of the protruding pillars of the component is pressed against the first shell component.

Images