JP6741531B2 - Register and its manufacturing method - Google Patents

Description

The present invention relates to a duct type register suitable for a defroster register of an automobile, etc., in which a spiral flow path is provided in a duct housing, and air can be uniformly blown to a wide range from an outlet of an outer peripheral portion of the duct housing. And a manufacturing method thereof.

In the interior of an automobile, a defroster register is usually arranged below the windshield in order to remove water droplets and the like attached to the inside of the windshield. This type of register is usually long in the vehicle width direction so as to blow a curtain-shaped air flow at a uniform flow velocity and a uniform air volume inside the windshield as described in Patent Document 1, for example. It has a long air outlet, and the base of the register is located under the windshield (inside the dashboard). It evenly distributes the airflow toward the narrow oblong air outlet and blows air. As described above, a large ventilation case formed in a fan shape is provided.

However, with the recent increase in size of windshields in automobiles, the air outlet of the defroster register has become longer, and the ventilation case at the base of the register has become larger in order to secure a sufficient air volume. The ventilation case of the unit is provided with a plurality of air inlets so that a sufficient amount of airflow is uniformly dispersed and blown.

For this reason, the base part of this type of register is extremely large and bulky, and the base part of the defroster register occupies a large space in the instrument panel (in the dashboard) of the vehicle interior. .. Therefore, downsizing of the register has been a problem.

Further, in order to blow air at a uniform flow velocity and flow rate from a narrow horizontally elongated air outlet, the air flow introduced from a plurality of air inlets is blown toward the thin horizontally elongated air outlet, It is necessary to form a thinly extending flow path from the introduction side base portion to the air outlet, which causes a problem that pressure loss during air blowing increases and air blowing performance is easily impaired.

Therefore, in the following Patent Document 2, the present applicant forms a spiral flow path by providing double spiral walls in a cylindrical duct-shaped housing, and forms slit holes along the longitudinal direction of the edge of the cylindrical duct. A register with a structure provided as an air outlet was proposed. This duct type register introduces an air flow into a spiral flow path formed in a cylindrical duct housing to generate a centrifugal force in an air flow swirling in the spiral flow path, and a swirl in which a centrifugal force is generated. The flow is blown through the air outlets of the slit holes provided in the outer peripheral portion.

JP, 2000-255256, A WO2014/184958A1 Publication

Unlike the conventional defroster register, this register does not require a large ventilation case with its base expanded in a fan shape, so the base of the register can be downsized, and the duct-shaped casing can be used. An air stream can be uniformly and efficiently blown through a long slit hole formed along the edge of the body.

However, at the time of manufacturing the register, the screw member having the spiral wall is inserted and fixed in the cylindrical duct-shaped casing, but since the duct-shaped casing has the same cross-sectional shape, it can be manufactured by extrusion molding. When is molded from a synthetic resin, a spiral shape cannot be formed by injection molding using a normal mold.

Further, in the case of the defroster register, the defroster register is arranged below the windshield of the automobile, and the lower part of the windshield is long and curved. Therefore, the defroster register also needs to be elongated and curved. Therefore, when manufacturing the defroster register, it is necessary to manufacture a screw member curved in the longitudinal direction (axial direction) and a duct housing that accommodates the screw member curved in the longitudinal direction (axial direction).

However, there is a problem that it is very difficult to mass-produce a long screw member or duct housing curved in the axial direction with high dimensional accuracy and efficiency.

In view of the above points, an object of the present invention is to provide a register in which a screw member is arranged in a curved duct housing can be easily manufactured with accurate dimensional accuracy, and a manufacturing method thereof.

In order to achieve the above object, the register of the present invention is
In a register in which a screw member having a spiral wall is arranged in a curved duct casing to form a spiral flow path in the duct casing, and air is blown through a slit-shaped outlet provided in an outer peripheral portion of the duct casing. ,
The screw member is formed by accommodating a plurality of pitch members corresponding to one pitch in the axial direction in the duct housing.
The duct housing has a length corresponding to a plurality of the pitch members, and is formed from a duct half member having a half shape in a longitudinal cross section through which the center line of the duct housing passes,
The duct half member comprises a lower duct half part having a curved mating surface on one side and an upper duct half part on the other side,
In the lower duct half-split part and the upper duct half-split part, a plurality of accommodating parts respectively accommodating the pitch members are formed along the axial direction,
The lower duct half-split part and the upper duct half-split part are formed in a curved shape as a whole by providing an inclined connection part inclined between the accommodating part and the accommodating part with respect to the center line of the duct housing,
In the inclined connection portion, a plate-shaped screw connection portion that connects between the pitch member and the pitch member is provided in a protruding manner,
A fitting portion that fits to the peripheral portion of the lower duct half portion and the peripheral portion of the upper duct half portion when the lower duct half portion and the upper duct half portion are closed together. Is provided,
In a state in which the pitch member is inserted between the screw connecting portion and the screw connecting portion in each of the accommodating portions, the lower duct half-divided portion and the upper duct half-divided portion are fitted so as to be closed. Characterize.

According to the register of the present invention, a register in which a screw member is arranged in a curved duct housing can be easily manufactured with accurate dimensional accuracy. In particular, the pitch member of the screw member is very difficult to form into a curved shape in terms of design and manufacturing, but the register is a duct housing having a normal linear pitch member and a housing portion. It is relatively easy to design and manufacture. Further, since the pitch members and the pitch members are connected to each other by the plate-shaped screw connection portion in the inclined connection portion at the time of assembling the members, the duct type register having the duct housing which is curved as a whole can be easily and efficiently manufactured. can do.

Here, the lower duct half-split part and the upper duct half-split part of the duct half-split member may be integrally formed through a hinge part and in a symmetrical shape with the hinge part as an axis of symmetry. According to this, by using one molding die, the lower duct half-divided portion and the upper duct half-divided portion of the duct half-divided member can be integrally formed by one injection molding. The number of molding steps can be reduced.

Also, a thin plate that fits together when the lower duct half-split part and the upper duct half-split part are closed together with the fitting part that fits the lower duct half-split part and the upper duct half-split part. The shape fitting portion, the locking portion, and the locking claw can be provided.

An air inlet is provided at the center of the lower duct half, and slit-shaped outlets are provided along the longitudinal direction in the edge tangential direction of the upper duct half, and both sides of the inlet are provided. Each pitch member of the screw member arranged in the housing portion can be formed to have spiral walls in opposite screw directions.

According to this, the register of the present invention can be applied to the defroster register disposed below the windshield of an automobile, and the register can be saved in a space that is curved along the curved surface of the windshield. It can be installed compactly.

The manufacturing method of the register of the present invention,
A register having a structure in which a screw member having a spiral wall is arranged in a cylindrical and curved duct casing to form a spiral flow path in the duct casing, and a slit-shaped outlet is provided on an outer peripheral portion of the duct casing. In a method of manufacturing a register in which is manufactured by a synthetic resin,
A step of injecting a synthetic resin into a molding die to form a pitch member corresponding to one pitch of the screw member by injection molding,
A duct half member having a length corresponding to a plurality of the pitch members and having a half shape in a longitudinal cross section through which the center line of the duct housing passes is injected by injecting a synthetic resin into a molding die. A step of molding by molding,
Inserting the pitch member into the duct half member, closing the duct half member so as to match, and assembling the duct housing;
Including,
In the duct half member, a lower duct half part having a curved mating surface on one side and an upper duct half part on the other side have a hinge part as a symmetry axis. Formed in a symmetrical shape,
In the lower duct half-split part and the upper duct half-split part, a plurality of accommodating parts that respectively accommodate the pitch members of the screw members are formed along the axial direction,
The lower duct half-split part and the upper duct half-split part are formed in a curved shape as a whole by providing an inclined connection part inclined between the accommodating part and the accommodating part with respect to the center line of the accommodating part,
A plate-shaped screw connection portion connecting between the pitch member and the pitch member is provided in a protruding manner in each of the storage portions,
During the assembling process, the pitch member is inserted into each storage portion of the lower duct half-divided portion or the upper duct half-divided portion, and the hinge portion is formed so that the lower duct half-divided portion and the upper duct half-divided portion are aligned with each other. The lower duct half-split portion and the upper duct half-split portion are fitted with the fitting portions at the edges thereof.

According to the method of manufacturing a register of the present invention, a register in which a screw member is arranged in a curved duct housing can be easily manufactured with accurate dimensional accuracy. In particular, the pitch member of the screw member is very difficult to mold into a curved shape in terms of design and manufacturing, but in the above manufacturing method, a normal linear pitch member is molded, and at the connecting portion thereof. Since it is slightly bent and connected by the plate-shaped screw connection portion to be manufactured, it is possible to easily and efficiently manufacture the duct-type register in which the screw member is provided and which is curved.

Here, the fitting portion for fitting the lower duct half-divided portion and the upper duct half-divided portion are provided with a thin plate-like fitting portion, a locking portion and a locking claw for mutually fitting. When the upper duct half is closed, it can be configured to be fitted and locked. According to this, the mating portion of the duct half members can be sealed only by fitting, and air leakage during air blowing can be prevented.

Another register manufacturing method of the present invention is
A register having a structure in which a screw member having a spiral wall is arranged in a cylindrical and curved duct casing to form a spiral flow path in the duct casing, and a slit-shaped outlet is provided on an outer peripheral portion of the duct casing. In a method of manufacturing a register in which is manufactured by a synthetic resin,
A step of injecting a synthetic resin into a molding die to form a pitch member corresponding to one pitch of the screw member by injection molding,
A duct half member having a length corresponding to a plurality of the pitch members and having a half shape in a longitudinal cross section through which the center line of the duct housing passes is injected by injecting a synthetic resin into a molding die. A step of molding by molding,
Inserting the pitch member into the duct half member, closing the duct half member so as to match, and assembling the duct housing;
Including,
The duct half member comprises a lower duct half part having a curved mating surface on one side and an upper duct half part on the other side,
In the lower duct half-split part and the upper duct half-split part, a plurality of accommodating parts that respectively accommodate the pitch members of the screw members are formed along the axial direction,
The lower duct half-divided portion and the upper duct half-divided portion are formed in a curved shape as a whole by providing a curved connecting portion between the accommodating portion and the accommodating portion,
Between the accommodating portion and the accommodating portion, a plate-shaped screw connecting portion that connects the pitch member and the pitch member is provided in a protruding manner.
At the peripheral edge of the lower duct half-cut portion and the peripheral edge of the upper duct half-split portion, there are mating portions that fit together when the lower duct half-split portion and the upper duct half-split portion are closed together. Is provided,
The pitch member is inserted into each accommodation portion of the lower duct half-divided portion, the lower duct half-divided portion and the upper duct half-divided portion are closed together, and the lower duct half-divided portion and the upper duct half-divided portion. It is characterized in that the fitting portion at the edge portion of is fitted.

According to the register and the manufacturing method thereof of the present invention, it is possible to easily manufacture a register in which a screw member is arranged in a curved duct housing with accurate dimensional accuracy.

It is a perspective view of a register showing one embodiment of the present invention. It is the perspective view seen from the back side of the register. It is a top view of the same register. It is a perspective view in the state where the upper duct half part of the register was opened. It is a perspective view of the state where the screw member was removed from the duct housing. It is a front view in the state where the upper duct half part of the register was opened. It is a front view of the opened duct housing. It is a top view of the lower duct half part and upper duct half part of an open duct housing. It is a left side view of an open lower duct half part and an upper duct half part. It is a bottom view of an open lower duct half part and an upper duct half part. 8A is a sectional view taken along line XX of FIG. 8, and FIG. 9B is a sectional view taken along line XI-XI of FIG. (A) is a front view of the pitch member arrange|positioned in the left duct housing, (b) is the top view, (c) is the left side view, (d) is the perspective view. (A) is a front view of the pitch member arrange|positioned in the duct housing of the right side, (b) is the top view, (c) is the left side view, (d) is the perspective view. It is a perspective view which shows the ventilation state of a register. It is a top view of a lower duct half-division part and an upper duct half-division part of a duct housing showing another embodiment. It is a perspective view of a register showing other embodiments.

Embodiments of the present invention will be described below with reference to the drawings. 1 to 3 show a duct type register having a cylindrical duct housing 1. In this register, a screw member 2 is inserted and fixed in a duct housing 1 having a curved cylindrical duct shape by connecting a plurality of pitch members 20 and 30 in the longitudinal direction, and a screw member 2 is provided on both sides of a spiral wall of the screw member 2. The first spiral flow path 4 and the second spiral flow path 5 are formed in the duct as a double spiral flow path.

As shown in FIG. 14, this duct-type register introduces air into the duct through an inlet 9 provided in the lower central part of the duct housing 1 so that the first spiral flow path 4 and the second spiral flow path are formed. Air is rotatably transferred in the screw feeding direction through the flow path 5, and is blown from a plurality of slit-shaped outlets 3 provided in the tangential direction of the outer peripheral portion of the duct housing 1.

The plurality of air outlets 3 are opened in the tangential direction of the duct circumferential portion in the spiral rotation direction of the spiral flow path (the rotation direction of the screw feed direction), and are arranged in parallel along the longitudinal direction of the duct. It Both ends of the duct housing 1 are closed. The airflow introduced from the inlet 9 provided at the lower center is divided into both sides of the duct housing 1 and is sent in both directions while swirling in the first spiral flow path 4 and the second spiral flow path 5, The air that flows upward along the circumferential wall in the duct due to the centrifugal force is blown upward from the tangential outlet 3 of the duct circumferential portion.

As shown in FIG. 3, in the assembled state, the duct housing 1 is formed into an arcuate shape as a whole in a plan view, and a storage portion 8 for storing a plurality of pitch members 20 is provided in the duct. .. The accommodating portion 8 in the duct housing 1 is formed in a straight cylindrical shape, and the inclined connecting portions 18 and 19 are provided between the accommodating portions 8 and 8 so that the duct housing 1 is curved as a whole on a plane. It is shaped to

That is, as shown in FIGS. 1 and 3, the axial centerline S2 of the storage portion 8 adjacent to the inside of the storage portion 8 at the right end of the drawing is inclined by an angle α. The four accommodating portions 8 provided in the duct housing 1 along the axial direction are each inclined in order by an angle α, and have an arcuate shape as a whole. Accordingly, the pitch members 20 and 30 housed and fixed in the housing parts 8 can be easily manufactured from a screw member having a normal spiral wall having a straight central axis.

Further, as shown in FIGS. 4 and 5, the duct housing 1 is formed from a duct half member 10 having a half-divided shape in a longitudinal cross section through which the center lines S1 and S2 pass, and as shown in FIG. When the duct half members 10 are closed with the pitch members 20 and 30 inserted and fixed in the lower storage portion 14 or the upper storage portion 15, the storage portion 8 is cylindrical due to the lower storage portion 14 and the upper storage portion 15. It is a structure formed in space. The pitch member 20 is a screw member having a left-handed spiral wall, and the pitch member 30 is a screw member having a right-handed spiral wall.

The duct half-split member 10 is composed of a lower duct half-split part 11 having a curved mating surface on one side and an upper duct half-split part 12 having a curved mating surface on the other side. The half-split portion 12 is integrally molded of synthetic resin via the flat plate portion 13.

A hinge portion 13a is formed as a resin hinge in the central longitudinal direction of the flat plate portion 13, and the lower duct half-split portion 11 and the upper duct half-split portion 12 are integrally formed in a symmetrical shape with the hinge portion 13a as the axis of symmetry. As a result, the lower duct half-split portion 11 and the upper duct half-split portion 12 can be rotated relative to each other via the hinge portion 13a so as to match the upper opening mating surfaces. The lower duct half-split portion 11 and the upper duct half-split portion 12 of the duct half-split member 10 are formed with fitting portions at the peripheral edge portions of the opening mating surfaces, and the lower duct half-split portion 11 and the upper duct half-split portion 12 are formed. It is a structure in which the fitting portions are fitted to each other when they are closed together.

In the lower duct half-split part 11 and the upper duct half-split part 12, a plurality of lower accommodating parts 14 and upper accommodating parts 15 are formed along the axial direction as semi-cylindrical spaces. When the lower duct half-split part 11 and the upper duct half-split part 12 of the duct half-split member 10 are closed together, the inner lower storage part 14 and the upper storage part 15 constitute a plurality of storage parts 8 as a cylindrical space. Pitch members 20 and 30 are stored in these storage portions 8, respectively. Further, the lower duct half-split portion 11 and the upper duct half-split portion 12 have a slanted cylindrical shape in the tubular portion between the storage portions 8 in order to make the duct housing 1 into a curved shape as a whole. The inclined connection portions 18 and 19 are integrally provided so as to be inserted.

As described above, in the duct half member 10, a plurality of accommodating portions 8 are arranged side by side in a cylindrical space along the axial direction. However, as shown in FIGS. The angles of the center lines S1 and S2 are α degrees, and the duct housing 1 is curved as a whole by inclining all the adjacent storage units 8 in the same direction at an angle α. In order to provide such an inclination angle between the adjacent storage parts 8 and 8, the slightly inclined inclination connection parts 18 and 19 are provided in the lower storage part 14 and the upper duct half part 11 of the lower duct half part 11. It is provided in a half-divided manner between the upper storage portions 15 of the twelve. The inclined connecting portions 18 and 19 have a cylindrical shape in a state where the lower duct half-split portion 11 and the upper duct half-split portion 12 are aligned.

The center lines of the cylindrical inclined connection portions 18 and 19 are formed to be slightly inclined in one direction with respect to the center lines S1 and S2 of the storage portion 8. As shown in FIG. 8, in the lower duct half-split part 11 and the upper duct half-split part 12 which are opened in a half-split state, between the lower storage part 14 and the lower storage part 14 to which the lower duct half-split part 11 is adjacent. The upper duct half portion 12 is formed so as to interpose the inclined connection portion 18, and the upper duct half portion 12 is integrally molded so that the inclined connection portion 19 is interposed between the adjacent upper storage portions 15 and 15.

Thus, by providing the slanted connection portions 18 and 19 between the storage portions 8 in the duct housing 1 and the storage portions 8, the duct housing 1 has the same configuration as shown in FIGS. As shown in FIG. Further, each storage part 8 is formed of a lower storage part 14 of the lower duct half-split part 11 and an upper storage part 15 of the upper duct half-split part 12, and the lower storage part 14 and the upper storage part 15 are long. Since the linear pitch members 20 and 30 are linearly formed in the direction, it is possible to easily insert the ordinary linear pitch members 20 and 30 into the lower storage portion 14 or the upper storage portion 15 when assembling the register. .. Therefore, the pitch members 20 and 30 can be manufactured as the pitch members of a normal linear screw, and the molding die and the molding can be easily performed.

Further, in the inclined connection portions 18 and 19 of the lower duct half-split portion 11 and the upper duct half-split portion 12, the pitch member 20 and the pitch member 20 or the pitch member 30 and the pitch member 30 are connected and connected to each other. The plate-shaped screw connection parts 16 and 17 are provided so as to project. As shown in FIG. 5, the pitch members 20 and 30 are inserted into the respective lower storage portions 14 of the lower duct half-split portion 11, or the pitch members 20 are inserted into the upper storage portion 15 of the upper duct half-split portion 12. When inserted, the pitch members 20 and 20 are tightly fitted and connected by the screw connection portions 16 and 17 in the inclined connection portions 18 and 19. Thereby, when the upper duct half-split part 12 is covered on the lower duct half-split part 11 to close the opening, or the upper duct half-split part 12 is covered with the lower duct half-split part 11 to close the opening. At this time, the screw connection part 17 in the inclined connection part 19 of the upper duct half part 12 and the screw connection part 16 in the inclined connection part 18 of the lower duct half part 11 are inserted between the pitch members 20 and 20. The structure is such that the space between them is tightly connected.

In the inclined connecting portions 18 and 19 of the duct housing 1, the linear pitch member 20 and the linear pitch member 20 or the linear pitch member 30 and the linear pitch member 30 are provided by the screw connecting portions 16 and 17. The pitch members 20 and 30 are mounted at appropriate positions in the duct housing 1 which is connected in a continuous manner in a state of being slightly inclined and is curved as a whole.

At the time of assembling the register, as shown in FIG. 5, the pitch members 20 and 30 are inserted into the lower storage portion 14 of the lower duct half portion 11 or the upper storage portion 15 of the upper duct half portion 12. The lower wall of the lower duct half 11 and the upper duct half 12 are provided with, for example, insertion holes or recesses at predetermined mounting positions of the pitch members 20 and 30. The projections 21 and 31 projecting from the edges of the pitch members 20 and 30 and the recesses and the like provided on the inner wall surface of the duct are fitted together and fixed in place.

As described above, with the pitch members 20 and 30 inserted between the screw connecting portions 16 and 17 in the lower housing portion 14 or the upper housing portion 15 and the screw connecting portions 16 and 17, the lower duct half portion 11 and the upper duct portion 11 The duct halves 12 are fitted so as to be closed together, and for this reason, the peripheral rim of the lower duct halves 11 and the opening rim of the upper duct halves 12 are fitted to each other. The thin plate-shaped fitting portions 11b and 12b are provided as the portions. With the thin plate-shaped fitting portions 11b and 12b, the lower duct half-split portion 11 and the upper duct half-split portion 12 can be fitted together without a gap, and air leakage is prevented.

Further, the thin plate-shaped fitting portions 11b and 12b are provided with a plurality of locking portions 11a and locking claws 12a that are locked by the locking portions 11a, and the upper duct half-split portion is placed on the lower duct half-split portion 11. The fitting state is locked when the inside is closed by covering the part 12 or by covering the upper duct half part 12 with the lower duct half part 11. As shown in FIG. 4, a positioning rib 12c is provided in the vicinity of the locking claw 12a of the upper duct half-dividing portion 12 so as to align the fitting position at the time of fitting. When the upper duct half-split part 12 is fitted on the lower duct half-split part 11 so as to be closed, the positioning ribs 12c are engaged with the engaging parts on the lower duct half-split part 11 side to provide a fitting position. And the locking portion 11a and the locking claw 12a can be locked easily.

As shown in FIGS. 1 and 9, the lower duct half-split portion 11 of the duct housing 1 is formed with an air introduction port 9 opening downward at the center thereof, and the upper duct half-split portion 12 is formed. A plurality of slit-shaped air outlets 3 are provided on the peripheral edge of the duct upward in the tangential direction of the duct circumferential wall. A plurality of the air outlets 3 are arranged in parallel upward along the axial direction (longitudinal direction), and the air outlets 3 are provided above the inlet 9, that is, in the central portion of the duct housing 1, in the tangential direction of the duct circumferential wall. It is installed upward. As shown in FIGS. 1 to 3, in this embodiment, two storages 8 are provided side by side on both sides of the inlet 9 in the duct housing 1. The number is arbitrary, and when the number of pitch members 20 and 30 to be used is three or more, the number of the accommodating portions 8 arranged in parallel may be set to three or more in accordance therewith.

In this register, both ends of the duct housing 1 are closed, an inlet 9 is provided in the center, and the air introduced from the inlet 9 is sent to both sides in the duct housing 1 in the longitudinal direction. The air is blown from the upward air outlets 3 arranged in parallel along the axial direction. For this reason, as shown in FIGS. 4 and 5, a pitch member 20 of a left screw (a left screw when the left side is viewed from the center) is inserted on the left side, for example, in each storage section 8 of the duct housing 1. A pitch member 30 having a reverse screw (a right screw when the right side is viewed from the center) is inserted on the right side. The screw member 2 in the duct housing 1 is composed of a plurality of pitch members 20 housed in the housing part 8, a pitch member 30, and screw connecting parts 16 and 17 connecting them.

One pitch member 20 of the screw member 2 is formed as a left screw as shown in FIG. 12, and the other pitch member 30 is formed as a right screw as shown in FIG. The pitch members 20 and 30 form spiral walls of reverse screws on the left side and the right side of FIG. As a result, the first spiral flow path 4 and the second spiral flow path 5 are formed as a double spiral flow path in the duct housing 1 on both sides of the spiral wall of the screw member 2. As shown in FIG. 14, the air introduced from the inlet 9 provided at the center of the duct housing 1 swirls the first spiral flow path 4 and the second spiral flow path 5 in the duct housing 1 on the left and right sides. It will be sent to both sides.

The pitch member 20 and the pitch member 30 of the screw member 2 forming the first spiral flow path 4 and the second spiral flow path 5 in the duct housing 1 are spirals for one pitch as shown in FIGS. 12 and 13. It is possible to integrally mold a synthetic resin with a molding die that is composed of a member and uses an injection molding die provided with a slide core or the like.

The pitch of the pitch member 20 and the pitch member 30 shown in the figure is formed to be approximately four times the outer diameter of the screw, which is long in the axial direction, but the pitch of the pitch member 20 and the pitch member 30 is, for example, the outer diameter of the screw. It is also possible to make it about 1 to 3 times, or to make the screw pitch shorter than the outer diameter of the screw. When the screw pitch of the pitch members 20 and 30 is shortened, the airflow flowing through the spiral flow path of the screw member 2 is more swirled and blown. Further, the number of storage portions 8 formed in the duct housing 1 is increased, the number of pitch members 20, 30 stored in the storage portion 8 is also increased, and the length of the duct housing 1 is increased. The pitch length of the pitch members 20 and 30 and the length of the duct housing 1 can be determined from the amount of air supplied to the inlet 9 of the register, the amount of air sent from the air outlet 3, the wind speed, and the like.

As shown in FIGS. 12 and 13, two insertion protrusions 21 are provided on both side edges of the pitch member 20, and two insertion protrusions 22 are provided on the middle edge. It Similarly, two insertion protrusions 31 are provided on both side edges of the pitch member 30, and two insertion protrusions 32 are provided on the intermediate edge. On the other hand, in the upper storage portion 15 of the upper duct half-divided portion 12 and the lower storage portion 14 of the lower duct half-divided portion 11 are fitted at respective positions corresponding to the insertion convex portions 21, 22, 31, 32. A recess is provided. Thereby, when the pitch members 20 and 30 are inserted into the upper duct half-split part 12 or the lower duct half-split part 11, the insertion projections 21, 22, 31, 32 are inserted into the fitting recesses on the duct side. The pitch members 20 and 30 can be easily fitted in predetermined positions.

Next, a method of manufacturing the register having the above-described structure will be described. When manufacturing the register, first, in the injection molding process using a molding die, the duct housing 1 and the two types of pitch members 20, 30 are made of synthetic resin. Injection molding. At this time, the duct housing 1 including the upper duct half-split portion 12 and the lower duct half-split portion 11 is integrally molded via the flat plate portion 13 and the hinge portion 13a, and the two kinds of pitch members 20, 30 are respectively formed. It is integrally molded using the molding die of. Therefore, only three molds are used, and the manufacturing cost of the mold and the number of man-hours of the injection molding process can be reduced. Thereby, even a specially shaped register having the curved duct housing 1 and the screw member 2 can be manufactured at a relatively low cost.

The molded member is then assembled as follows. First, the pitch members 20 and 30 are inserted into the lower housing portion 14 of the lower duct half portion 11 or the upper housing portion 15 of the upper duct half portion 12 of the molded duct housing 1. As shown in FIG. 5, the left-threaded pitch member 20 is inserted into the lower housing portion 14 of the lower duct half portion 11 on the left side of the duct housing 1 or the upper housing portion 15 of the upper duct half portion 12. ..

The right-threaded pitch member 30 is inserted and assembled in the lower housing portion 14 of the lower duct half portion 11 or the upper housing portion 15 of the upper duct half portion 12 on the right side of the duct housing 1. That is, the pitch members 20 and 30 may be inserted into either the upper storage portion 15 or the lower storage portion 14.

At this time, since the plate-shaped screw connection portions 16 are provided in fixed positions on both sides in the lower storage portion 14, and the screw connection portions 17 are provided in fixed positions on both sides in the upper storage portion 15, The pitch members 20 and 30 can be fitted in the correct positions only by inserting both side edge portions so as to fit between the screw connection portions 16 or between the screw connection portions 17. At that time, the pitch members 20 and 30 are accurately positioned at predetermined positions by inserting the insertion protrusions 21, 22, 31, and 32 provided on both side edge portions and the intermediate edge portion into the fitting concave portions on the duct side. It is fitted in the posture.

Next, as shown in FIG. 4, the upper duct half-split portion 12 and the lower duct half-split portion 11 are rotated through the hinge portion 13a so that their openings are aligned, and the upper duct half-split portion 11 is placed above the lower duct half-split portion 11. The duct half member 10 is closed so as to cover the upper duct half part 12 or the lower duct half part 11 on the upper duct half part 12. At this time, the peripheral portions of the upper duct half-split part 12 and the lower duct half-split part 11 are sealed by the fitting of the thin plate-shaped fitting parts 12b and 11b, and the locking claws 12a and the locking parts 11a are locked. Be fitted.

As described above, the pitch members 20 and 30 are inserted into the lower storage portion 14 of the opened lower duct half portion 11 or the upper storage portion 15 of the upper duct half portion 12, respectively, and the upper duct half portion 12 is inserted. The register can be assembled by a simple operation of simply rotating and closing so that the openings of the lower duct half-split portion 11 are aligned with each other.

In this state, both side ends of the plurality of pitch members 20 and 30 in the duct housing 1 are connected to each other by the projecting screw connection portions 16 and 17 in the lower storage portion 14 and the upper storage portion 15, respectively. The screw member 2 including the pitch members 20 and 30 is installed in the duct housing 1 at an appropriate position, and in the duct housing 1, both sides of the spiral wall of the screw member 2 are shown in FIG. Thus, the first spiral flow path 4 and the second spiral flow path 5 are formed. In this register, when the inside of the duct on the left side is viewed from the side of the inlet 9 in the center, the first spiral flow path 4 and the second spiral flow path 5 are formed so as to swirl in the left-hand screw direction. When viewed from the side to the right, the first spiral flow path 4 and the second spiral flow path 5 are formed so as to rotate in the right-hand screw direction.

The register having the above-described configuration is installed in a dashboard below a windshield, for example, as a defroster register, and since the duct housing 1 of the register has a curved shape, a dash is fitted to a curved portion of a base portion of the windshield. Can be mounted inside the board. The air duct of the air conditioner (not shown) is connected to the inlet 9 of the duct housing 1. However, unlike the conventional defroster register, this register is a cylindrical duct type and is formed in a small size, so the windshield inside the dashboard is It can be installed in a small space below.

When an airflow is sent from the inlet 9 into the duct housing 1 through the blower duct by the blower of the air conditioner, the airflow is sent from the inlet 9 to the left and right sides separately as shown in FIG. In the left duct housing 1, the first spiral flow path 4 and the second spiral flow path 5 are formed on both sides of the screw member 2 by the left threaded pitch member 20 toward the left side. The flow R1 is sent through the first spiral flow path 4 and the second spiral flow path 5 while swirling in the left-hand screw direction.

Similarly, in the right duct housing 1, the first spiral flow path 4 and the second spiral flow path 5 are formed on both sides of the screw member 2 by the right-handed pitch member 30 toward the right side. The air flow R2 is sent through the first spiral flow path 4 and the second spiral flow path 5 while swirling in the right-hand screw direction. At this time, the air flows R1 and R2 flow on both sides in the duct housing 1 while swirling through the first spiral flow path 4 and the second spiral flow path 5 along the left screw or the right screw. Since both ends of the duct are closed, the swirling airflow is blown upward from the air outlet 3 provided in the tangential direction of the circumferential edge of the duct casing 1.

At the time of blowing air, centrifugal force acts on the air streams R1 and R2 that swirl through the first spiral flow path 4 and the second spiral flow path 5. As a result, the airflows R1 and R2 flow along the inner wall of the cylinder of the duct housing 1, and the airflow smoothly enters the passenger compartment with a low pressure loss from the air outlet 3 that opens in the tangential direction and in the turning direction. Blown. Further, even when a large number of outlets 3 are arranged in parallel along the longitudinal direction like a defroster register, the air flow swirling in the spiral flow path has a relatively uniform air flow over a wide range. Can be blown at wind speed.

In the above embodiment, the lower duct half-split portion 11 and the upper duct half-split portion 12 of the duct half-split member 10 are integrally molded via the hinge portion 13a. However, as shown in FIG. 15, the hinge half portion is provided. Alternatively, the lower duct half-split portion 11A and the upper duct half-split portion 12A can be molded separately. In FIG. 15, the same parts as those in the above embodiment are denoted by the same reference numerals as those in the above description, and the description thereof will be omitted.

In the case of the register shown in FIG. 15, an injection molding mold for molding the lower duct half-split portion 11A and an injection molding mold for molding the upper duct half-split portion 12A are required separately. At the time of assembly, in the same manner as described above, with the pitch members 20 and 30 housed inside, the lower duct half-split portion 11A and the upper duct half-split portion 12A are simply closed and fitted together. The register can be easily manufactured.

Further, in the above-described embodiment, the air inlet 9 is provided in the central portion of the duct casing 1 and both ends of the duct casing 1 are closed, but as shown in FIG. It is also possible to close the tip end, form an inlet 9A at the end of the duct housing 1A, and connect the air inlet duct of the air conditioner to the inlet 9A. In FIG. 16, the same parts as those in the above embodiment are denoted by the same reference numerals as those in the above, and the description thereof will be omitted.

In the case of the register shown in FIG. 16, only a right-threaded pitch member 30 is housed in each of a plurality of storage portions formed along the axial direction in the curved duct housing 1A, and the duct half member 10 has a lower portion. The duct half part 11 and the upper duct half part 12 may be fitted together. At the time of use, the airflow introduced from the inlet 9A at the terminal end is swung in the right-hand screw direction and sent, and is blown upward from the plurality of outlets 3. Such a duct type register can be easily installed and used in a narrow curved space such as a ceiling edge or a floor edge in a vehicle compartment.

DESCRIPTION OF SYMBOLS 1 Duct housing 2 Screw member 3 Air outlet 4 1st spiral flow path 5 2nd spiral flow path 8 Storage part 9 Introduction port 10 Duct half-split member 11 Lower duct half-split part 11a Engagement part 11b Thin plate fitting part 12 Upper duct half part 12a Locking claw 12b Thin plate fitting part 12c Positioning rib 13 Flat plate part 13a Hinge part 14 Lower storage part 15 Upper storage part 16 Screw connection part 17 Screw connection part 18 Inclined connection part 19 Inclined connection part 20 Pitch Member 21 Inserting convex part 22 Inserting convex part 30 Pitch member 31 Inserting convex part 32 Inserting convex part

Claims (7)

In a register in which a screw member having a spiral wall is arranged in a curved duct casing to form a spiral flow path in the duct casing, and air is blown through a slit-shaped outlet provided in an outer peripheral portion of the duct casing. ,
The screw member is formed by accommodating a plurality of pitch members corresponding to one pitch in the axial direction in the duct housing.
The duct housing has a length corresponding to a plurality of the pitch members, and is formed from a duct half member having a half shape in a longitudinal cross section through which the center line of the duct housing passes,
The duct half member is composed of a lower duct half part having a curved mating surface on one side and an upper duct half part on the other side,
In the lower duct half-split part and the upper duct half-split part, a plurality of accommodating parts respectively accommodating the pitch members are formed along the axial direction,
The lower duct half-split part and the upper duct half-split part are formed in a curved shape as a whole by providing an inclined connection part inclined between the accommodating part and the accommodating part with respect to the center line of the duct housing,
In the inclined connection portion, a plate-shaped screw connection portion that connects between the pitch member and the pitch member is provided in a protruding manner,
The peripheral portion of the lower duct half-divided portion and the peripheral portion of the upper duct half-divided portion are fitted with each other when the lower duct half-divided portion is covered with the upper duct half-divided portion. A fitting part is provided,
In a state in which the pitch member is inserted between the screw connecting portion and the screw connecting portion in each of the accommodating portions, the lower duct half-divided portion and the upper duct half-divided portion are fitted so as to be closed. Characteristic register. 2. The lower duct half-split part and the upper duct half-split part of the duct half-split member are integrally formed through a hinge part and in a symmetrical shape with the hinge part as the axis of symmetry. register. A thin plate-like fitting portion that fits together when the lower duct half-split portion and the upper duct half-split portion are closed to the fitting portion that fits the lower duct half-split portion and the upper duct half-split portion, The register according to claim 1, further comprising a locking portion and a locking claw. An air inlet is provided at the center of the lower duct half, and a slit-shaped outlet is provided along the longitudinal direction at the edge of the upper duct half, and the air is stored on both sides of the inlet. 2. The register according to claim 1, wherein each pitch member of the screw members arranged in the section is formed to have spiral walls in mutually opposite screw directions. A register having a structure in which a screw member having a spiral wall is arranged in a cylindrical and curved duct casing to form a spiral flow path in the duct casing, and a slit-shaped outlet is provided on an outer peripheral portion of the duct casing. In a method of manufacturing a register in which is manufactured by a synthetic resin,
A step of injecting a synthetic resin into a molding die to form a pitch member corresponding to one pitch of the screw member by injection molding,
A duct half member having a length corresponding to a plurality of the pitch members and having a half shape in a longitudinal cross section through which the center line of the duct housing passes is injected by injecting a synthetic resin into a molding die. A step of molding by molding,
Inserting the pitch member into the duct half member, closing the duct half member so as to match, and assembling the duct housing;
Including,
In the duct half member, a lower duct half part curved in one side and an upper duct half part curved in the other side are symmetrically arranged with a hinge part as a symmetry axis. Integrally molded,
In the lower duct half-split part and the upper duct half-split part, a plurality of accommodating parts that respectively accommodate the pitch members of the screw members are formed along the axial direction,
The lower duct half-divided portion and the upper duct half-divided portion are formed in a curved shape as a whole by providing an inclined connecting portion inclined between the accommodating portion and the accommodating portion with respect to the center line of the accommodating portion,
Between the accommodating portion and the accommodating portion, a plate-shaped screw connecting portion that connects the pitch member and the pitch member is provided in a protruding manner.
During the assembling process, the pitch member is inserted into each storage portion of the lower duct half-split part or the upper duct half-split part, and the hinge is formed so that the lower duct half-split part and the upper duct half-split part are closed together. A method for manufacturing a register, characterized in that the register is rotated through a portion, and the fitting portions at the edges of the lower duct half-split portion and the upper duct half-split portion are fitted. A register having a structure in which a screw member having a spiral wall is arranged in a cylindrical and curved duct casing to form a spiral flow path in the duct casing, and a slit-shaped outlet is provided on an outer peripheral portion of the duct casing. In a method of manufacturing a register in which is manufactured by a synthetic resin,
A step of injecting a synthetic resin into a molding die to form a pitch member corresponding to one pitch of the screw member by injection molding,
A duct half member having a length corresponding to a plurality of the pitch members and having a half shape in a longitudinal cross section through which the center line of the duct housing passes is injected by injecting a synthetic resin into a molding die. A step of molding by molding,
Inserting the pitch member into the duct half member, closing the duct half member so as to match, and assembling the duct housing;
Including,
The duct half member is composed of a lower duct half part having a curved mating surface on one side and an upper duct half part on the other side,
In the lower duct half-split part and the upper duct half-split part, a plurality of accommodating parts that respectively accommodate the pitch members of the screw members are formed along the axial direction,
The lower duct half-divided portion and the upper duct half-divided portion are formed in a curved shape as a whole by providing an inclined connecting portion inclined between the accommodating portion and the accommodating portion with respect to the center line of the accommodating portion,
Between the accommodating portion and the accommodating portion, a plate-shaped screw connecting portion that connects the pitch member and the pitch member is provided in a protruding manner.
During the assembling process, the pitch member is inserted into each of the accommodating parts of the lower duct half part or the upper duct half part, the lower duct half part and the upper duct half part are closed together, and the lower part is closed. A method for manufacturing a register, characterized in that fitting portions at edges of the duct half-cut portion and the upper duct half-divided portion are fitted. The fitting portion for fitting the lower duct half-divided portion and the upper duct half-divided portion are provided with a thin plate-shaped fitting portion, a locking portion and a locking claw for mutually fitting, and the lower duct half-divided portion and the upper portion. The method for manufacturing a register according to claim 5 or 6, wherein when the duct halves are closed together, the thin plate-shaped fitting portion, the locking portion, and the locking claw are fitted.

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