JP2017065567A - Vehicle door lower sash - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve rigidity of a door lower sash, and suppress wobble of a window glass when a door is opened and closed.SOLUTION: A vehicle door lower sash for guiding a lifting movement of a window glass following to opening and closing of a door, is formed by integral molding of: a sash body 11 which is curved in a lifting direction, corresponding to a shape of a rear end edge of the window glass, and comprising a recess-state groove continuous in a vertical direction for insertion of the rear end edge of the window glass; attachment parts 12, 12 attached to upper and lower sides of the sash body 11 for being attached to a door panel; and a connection part 13 for connecting the attachment parts, using a resin.SELECTED DRAWING: Figure 4

Description

  The present invention relates to a vehicle door lower sash, and more particularly, to a vehicle door lower sash that guides the window glass ascending / descending movement accompanying opening and closing.

  2. Description of the Related Art Conventionally, vehicles are provided with a sash that guides while raising and lowering a window glass from the top dead center to the bottom dead center when the door window is opened and closed. This sash is a so-called door sash composed of a door outer panel and an inner panel in the upper window portion of the door, and is separated from the door sash below the door window portion. It is comprised from the door lower sash which is a part of.

  The door sash is usually provided in the door, and when the window is opened, the window glass descends along the door lower sash, and is stored and held in an accurate position by the door lower sash, so that the window is opened. The state is maintained well.

  By the way, the door lower sash that guides the raising and lowering of the window glass has been conventionally formed of a sheet metal part. However, a resin door lower sash has been demanded due to the recent demand for lighter vehicles. Due to its function, the door sash itself is generally provided with a concave groove that is formed in a substantially U-shaped horizontal cross section and is connected to the upper and lower sides. The movement of the glass in the thickness direction (vehicle width direction) is regulated.

  In addition, door lower sashes are required to hold the window glass so that it does not flutter when it is closed (when it is at the top dead center that is fully raised) as well as when the window glass is raised or lowered. ing. For this reason, a window glass is hold | maintained via the glass run which is a rubber-like member fitted in the concave groove | channel of a door lower sash. This glass run has the role of preventing the leakage of sound into and out of the passenger compartment, as well as the role of making the window glass slippery by lifting and lowering. The glass run is fixed by a claw-shaped portion provided in the door lower sash.

By the way, resin door lower sashes, unlike sheet metal parts, are easy to deform the claw-shaped part provided to fix the glass run, and the concave groove itself is easy to open. There was a big fluttering defect and the door quality was bad.
Therefore, conventionally, a door lower sash as shown in Patent Document 1 has been proposed. This door lower sash is integrally formed of resin by injection molding, and includes a concave groove continuous in the vertical direction. A window glass and a glass run for holding the window glass are accommodated in the concave groove of the door lower sash.

JP 2000-280740 A

    However, even in the sash disclosed in Patent Document 1 described above, since the door lower sash is made of resin, its strength is insufficient, so there was still concern about fluttering of the window glass in the sash body. .

  The present invention has been made in view of such a situation, and its purpose is to improve the rigidity of the door lower sash, to suppress the flutter of the window glass when the door is opened and closed, to improve the door quality, and An object of the present invention is to provide a door lower sash for a vehicle that can reduce the thickness of the door lower sash and contribute to a reduction in the cost and weight of the vehicle.

  In order to solve the above-mentioned problems, in one aspect of the vehicle door lower sash according to the present invention, in the vehicle door lower sash for guiding the window glass ascending / descending movement accompanying opening and closing, the front edge or rear edge of the window glass is provided. A sash body that is curved in the ascending / descending direction according to the shape and has a concave groove that extends vertically to insert the front edge or rear edge of the window glass, and an attachment provided above and below the sash body to be attached to a door panel The portion and the connecting portion connecting the attachment portions are integrally formed of resin.

  Moreover, in one aspect | mode of the sash of the vehicle which concerns on this invention, it is set as the structure which formed the said connection part in linear form.

  In one aspect of the vehicle door lower sash according to the present invention, a reinforcing portion extending in a normal direction to the curved shape of the door lower sash is provided between the connecting portion and the sash body. It is configured.

  In one aspect of the vehicle door lower sash according to the present invention, the sash body is provided with a claw-shaped portion for holding a glass run, and the reinforcing portion is provided in the vicinity of the claw-shaped portion. .

  In one aspect of the vehicle door lower sash according to the present invention, in the vehicle door lower sash for guiding the window glass ascending / descending movement in accordance with opening and closing, the ascending / descending direction corresponds to the shape of the front edge or the rear edge of the window glass. And a sash body having a concave groove extending vertically to insert a front edge or a rear edge of the window glass, a mounting part provided on the top and bottom of the sash body to be attached to a door panel, and the space between the mounting parts Since the connecting portion that connects the two is integrally formed of resin, the connecting portion functions to regulate the dimension between the mounting portions, and the connecting portion deforms the central portion of the sash body having relatively low rigidity. Can be regulated.

  Thereby, the rigidity of the door lower sash is improved, and even when the door lower sash is made of resin and easily deforms, the deformation of the door lower sash is suppressed by the connecting portion. For this reason, the window glass fluttering at the time of opening and closing the door, which was caused by the lack of rigidity of the door lower sash, is suppressed, and the door quality is improved. Thinning is possible, which can contribute to the reduction of the cost and weight of the vehicle.

  Furthermore, in one aspect of the door lower sash of the vehicle according to the present invention, the connecting portion is configured to be formed in a straight line shape, so that a straight line is applied to the load applied to the door lower sash as the window glass is raised and lowered. Since the connecting portion in the shape of a ring supports the door lower sash by acting as a tension rod, the strength of the door lower sash itself is further increased, and the deformation suppressing effect of the door lower sash by the connecting portion is also increased.

  Furthermore, in one aspect of the vehicle door lower sash according to the present invention, a reinforcing portion extending in a normal direction to the curved shape of the door lower sash is provided between the connecting portion and the sash body. Since the configuration is such that the central portion of the sash body is connected to the highly rigid mounting portion via the reinforcing portion and the connecting portion, the load applied to the central portion of the sash body is thereby mounted. The center portion of the sash body can be reinforced. Therefore, even when a load is applied to the door lower sash, the deformation of the door lower sash can be suppressed, and in particular, the strength against the deformation load in the closing direction and the opening direction of the curved shape of the door lower sash is further increased. The window glass and the glass run can be prevented from fluttering and coming off.

  Furthermore, since the reinforcing portion is provided in the vicinity of the claw-shaped portion of the sash body, the strength of the portion where the claw-shaped portion of the sash body is formed can be improved by the reinforcing portion. And since the load added to the location in which the claw-shaped part of the sash body was formed can be transmitted to the attachment part via the reinforcing part and the connecting part, the claw-shaped part of the central part of the door lower sash The deformation | transformation in the location in which it was formed can be suppressed as possible. For this reason, it is possible to prevent the claw-shaped portion provided in the sash body from being deformed in the direction in which the concave groove is widened, and the portion lowered by the die-cutting hole provided for forming the claw-shaped portion The strength of can also be compensated.

It is a disassembled perspective view which shows one Embodiment of the door lower sash of the vehicle which concerns on this invention. 1 is a front view showing an embodiment of a door lower sash of a vehicle according to the present invention, in particular, a state in which a window glass is guided to the door lower sash and lowered to a bottom dead center. It is a perspective view which shows the door lower sash in one Embodiment of the door lower sash of the vehicle which concerns on this invention. It is a front view which shows the door lower sash in one Embodiment of the door lower sash of the vehicle which concerns on this invention. It is a front view which expands and shows the part enclosed with the circle | round | yen shown by the arrow A in FIG. It is the BB sectional view taken on the line in FIG. The door lower sash in other embodiment of the door lower sash of the vehicle which concerns on this invention is shown, (a) is a figure which shows the door lower sash which provided a pair of claw-shaped part in the center part of the sash main body, (b) ) Is a diagram equivalently deforming and expressing the transmission of force applied to the reinforcing portion of the door lower sash shown in (a), and (c) is equivalent to 1 as the pair of reinforcing portions are shown in (b). It is a figure which shows being replaced by one reinforcement part. It is a front view which shows the door lower sash in other embodiment of the door lower sash of the vehicle which concerns on this invention.

  Hereinafter, an embodiment of a vehicle door lower sash according to the present invention will be described. 1 to 7 show an embodiment of a vehicle door lower sash according to the present invention.

  As shown in FIGS. 1 and 2, the door lower sash 10 of the vehicle according to the present embodiment is positioned below the window 22 so as to guide the elevation of the window glass 21 of the door 20 to the lower side of the window 22. It is attached to a door inner panel 23). As shown in FIGS. 3 and 4, the door lower sash 10 is provided on the sash body 11 and the side wall 11a on the vehicle outer side of the sash body, with the vehicle upper and lower ends being appropriately spaced with the vehicle width direction directed. It has a configuration including a pair of attachment portions 12 and 12 and a connecting portion 13 connecting the attachment portions.

  Here, the sash main body 11 has a substantially U-shaped horizontal cross section, and is provided with a concave groove 14 that extends vertically. Corresponding to the shape of the rear edge 21a of the window glass 21, the sash body 11 is curved not only in the vehicle front-rear direction but also in the left-right direction with a curvature along the appearance design of the vehicle. As a result, the window glass 21 moves up and down in the concave groove 14 of the sash body 11 along the shape of the door lower sash 10, as will be described later, with the rear edge 21a inserted into the concave groove 14. can do.

  Moreover, the connection part 13 is formed in linear form. The sash body 11 is provided with a plurality of pairs of claw-shaped portions 11 b and 11 b for holding the glass run 30. As shown in detail in FIG. 4, the claw-shaped portions 11 b and 11 b are provided so as to be opposed to each other on the opening side of the concave grooves 14 of the side wall portions 11 d and 11 d of the sash body 11. And a pair of reinforcement parts 15 and 15 are provided in the vicinity of a pair of claw-shaped parts 11b and 11b located in the vicinity of the central part 11c of the sash body 11.

  The pair of reinforcing portions 15, 15 are provided between the connecting portion 13 and the sash body 11 so as to extend in the normal direction with respect to the curved shape of the door lower sash 10. In the present embodiment, the pair of connecting portions 15 are provided at positions sandwiching the pair of claw-shaped portions 11b and 11b in the vicinity of the central portion 11c of the sash body 11 in the vehicle vertical direction.

  In this embodiment, the sash main body 11, the attachment parts 12 and 12, the connection part 13, and the reinforcement parts 15 and 15 of the door lower sash 10 are integrally molded with resin. For this reason, the back wall 11e of the sash body 11 needs a hole for the molding die to enter, and is provided with die-cutting holes 11f and 11f as the holes. Thereby, the nail | claw-shaped parts 11b and 11b of the sash main body 11 can be formed by injection molding (refer FIG. 4).

  The door sash 10 is attached by tightening and fixing the attachment portions 12 and 12 to the door panel 23 using, for example, bolts or screws. A glass run 30 for slidably holding the edge 21a of the window glass 21 is fitted into the concave groove 14 of the sash body 11 of the door lower sash 10, and is held in the sash body 11 by the claw-shaped portions 11b and 11b. Is done.

  In this embodiment, since the connection part 13 which connects between the attachment parts 12 and 12 is provided, even if a load is applied to the door lower sash 10 when the window glass 21 is raised and lowered, the connection part 13 is attached to the attachment parts 12 and 12. Since the door lower sash is supported so as to regulate the dimension between them, the deformation of the central portion 11c of the sash body 11 having relatively low rigidity can be regulated. As a result, even when the door lower sash 10 is made of resin, it can be easily deformed by the connecting portion 13.

  For this reason, the fluttering of the window glass 21 at the time of opening and closing of the door, which has been caused by the lack of rigidity of the door lower sash 10, is suppressed, and the door quality is improved. Further, the rigidity of the door lower sash 10 is increased. It is possible to reduce the thickness of the door sash, which can contribute to reduction of the cost and weight of the vehicle.

  Moreover, in this embodiment, since the dimension between the attachment parts 12 and 12 is controlled by the connection part 13, generation | occurrence | production of the shaping | molding error of the door lower sash 10 which is easy to occur with the molding shrinkage peculiar to resin molding is suppressed. For this reason, generation | occurrence | production of malfunctions, such as the distance between the attaching parts 12 and 12 changing, or the assembly | attachment of the door lower sash 10 becomes difficult, can be prevented.

  Further, in the present embodiment, since the connecting portion 13 is formed in a linear shape, the linear connecting portion 13 is stretched against the load applied to the door lower sash 10 as the window glass 21 is raised and lowered. Since the door lower sash 10 is supported by acting as a stick, the strength of the door lower sash 10 is further increased, and the deformation suppressing effect of the door lower sash 10 by the connecting portion 13 is also increased.

  Furthermore, in this embodiment, since the reinforcing portions 15 and 15 extending in the normal direction to the curved shape of the door lower sash 10 are provided between the connecting portion 13 and the sash body 11, the sash The central portion 11c of the main body 11 is connected to the highly rigid mounting portions 12 and 12 via the reinforcing portions 15 and 15 and the connecting portion 13, whereby the load applied to the central portion 11c of the sash main body is attached to the mounting portion. 12, 12 can be borne, and the central portion 11c of the sash body 11 can be reinforced.

  Therefore, the strength of the sash main body 11 is increased with respect to the closing direction and the opening direction of the curved shape, and the window glass 21 and the glass run 30 can be prevented from fluttering or coming off. Further, since the sash body 11 is supported by the reinforcing portions 15 and 15 from the orthogonal direction, the sash body 11 is deformed by a load applied to the sash body 11 as the window glass 21 moves up and down. Can be suppressed. Moreover, the reinforcing portion 15 extending in the normal direction of the curved shape of the door lower sash 10 exhibits a supporting effect and suppresses deformation even with respect to a load acting in the direction in which the concave groove 14 of the sash body 11 opens, so that the window glass The occurrence of 21 flutter can be suppressed.

  Furthermore, in this embodiment, since it is set as the structure which provided the reinforcement parts 15 and 15 in the vicinity of the nail | claw-shaped parts 11b and 11b provided in the center part 11c vicinity of the sash main body 11, the nail | claw-shaped parts 11b and 11b of the sash main body 11 are provided. It is possible to improve the strength of the portion where the stub is formed by the reinforcing portions 15 and 15. Moreover, since the load applied to the location where the claw-shaped portions 11b, 11b of the sash body 11 are formed can be transmitted to the mounting portions 12, 12 via the reinforcing portion 15 and the connecting portion 13, the center of the door lower sash 10 can be transmitted. It is possible to restrict deformation at the location where the claw-shaped portions 11b and 11b in the vicinity of the portion 11c are formed. For this reason, while being able to suppress that the part which provided claw-shaped part 11b, 11b vicinity of the center part 11c of the sash main body 1 deform | transformed in the direction which expands the concave groove 14, it can suppress claw-shaped part 11b, 11b. The strength of the lowered portion can be compensated for by the punching hole 11f provided for molding.

7 and 8 show another embodiment of a vehicle door lower sash according to the present invention.
In the present embodiment, a single reinforcing portion 15 is employed instead of the pair of reinforcing portions 15 in the above embodiment. In the above embodiment, as shown in FIG. 7A, the pair of reinforcing portions 15, 15 are provided at positions sandwiching the pair of claw-shaped portions 11 b, 11 b of the sash body 11 in the vehicle vertical direction. The reinforcing portions 15 and 15 are equivalent to the configuration shown in FIG. 7B when deformed from the viewpoint of transmission of force, and the pair of reinforcing portions 15 and 15 have a single structure as shown in FIG. The two reinforcing portions 15 can be replaced. In short, it is only necessary to provide the reinforcing portion 15 so that the truss structure is formed between the high-rigidity mounting portions 12 and 12 and the central portion 11c of the relatively weakly rigid sash body 11, in other words, the sash body by the reinforcing portion 15. The reinforcing portions may be provided so that a load applied to the sash 11 is transmitted from the vicinity of the central portion 11c of the sash body to the mounting portions 12 and 12 via the connecting portion 13, and the number of the reinforcing portions is not particularly limited.

  Further, as shown in FIG. 4, the connecting portion 13 may be provided near the base of the attaching portions 12, 12 and installed near the sash body 11. As shown in FIG. 8, the attaching portion 12 is provided. , 12 may be provided in the vicinity of the tip of the sash body 11 so as to be relatively far from the sash body 11.

In the above embodiment, the rear edge 21a of the window glass 21 is inserted into the concave groove 14, but the present invention is not limited to this, and the window glass 21 is not limited to this case when the door 20 is a front door. Of course, the front end edge of the sash body may be inserted into the concave groove 14 of the sash body 11.

  While the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and various modifications and changes can be made based on the technical idea of the present invention.

DESCRIPTION OF SYMBOLS 10 Door sash 11 Sash main body 11a Side wall part 11b Claw-shaped part 11c Center part 11d Side wall part 11e Back wall 11f Die-out hole 12 Mounting part 13 Connection part 14 Concave groove 15 Reinforcement part 20 Door 21 Window glass 21a Rear edge 22 Window 23 Door panel 30 Glass run

Claims (4)

  In a vehicle door lower sash that guides the window glass ascending / descending movement in accordance with opening and closing, the window glass is bent in the ascending / descending direction corresponding to the shape of the front edge or the rear edge of the window glass, and the front edge or the rear edge of the window glass A sash body provided with a concave groove that is vertically connected to be inserted, a mounting portion provided on the top and bottom of the sash body to be attached to a door panel, and a connecting portion connecting the mounting portions are integrally formed of resin. The vehicle door lower sash.   The vehicle door lower sash according to claim 1, wherein the connecting portion is formed in a straight line.   The vehicle door lower sash according to claim 2, wherein a reinforcing portion extending in a normal direction to the curved shape of the door lower sash is provided between the connecting portion and the sash body.   4. The vehicle door lower sash according to claim 3, wherein a claw-shaped portion for holding a glass run is provided in the sash body, and the reinforcing portion is provided in the vicinity of the claw-shaped portion.

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