JP3965933B2 - Electric slide seat for vehicles - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an electric slide seat for a vehicle.
[0002]
[Prior art]
As a vehicle seat such as an automobile, there is an electric slide seat that can be slid back and forth by a driving force of an electric motor (refer to Japanese Utility Model Laid-Open No. 6-63425). This type of electric slide seat has, for example, a movable rail to which a seat is fixed inside a fixed rail having an open cross-sectional shape having an opening on the upper side, and the movable rail is electrically driven by the driving force of the electric motor together with the seat. It has become.
[0003]
The electric motor is fixed to the movable rail side, and power is supplied to the electric motor by sliding contact between the fixed contact and the movable contact. The fixed contact is in the form of a belt and is provided in the longitudinal direction along the upper surface of the fixed rail, and the movable contact is provided in a portion protruding upward from the fixed rail of the movable rail, while sliding the movable contact to the fixed contact. The current can be supplied from the fixed rail to the electric motor of the movable rail.
[0004]
[Problems to be solved by the invention]
However, in such a conventional technique, since the fixed contact is provided on the upper surface of the fixed rail, dust, dust, water droplets, etc. are likely to adhere to the surface of the fixed contact, and between the movable contacts. There is a risk of poor contact. Therefore, it is necessary to strictly cover the periphery of the fixed contact on the upper surface of the fixed rail with a dedicated cover having high airtightness and watertightness, and the peripheral structure of the fixed rail is complicated.
[0005]
The present invention has been made paying attention to such a conventional technique, and provides an electric slide seat for a vehicle in which there is no possibility of dust or the like adhering to a fixed contact.
[0010]
[Means for Solving the Problems]
According to a first aspect of the present invention, there is provided a movable rail having a seat fixed inside a fixed rail having an open cross-sectional shape fixed to a vehicle body, and the movable rail is provided at a fixed contact provided along the longitudinal direction of the fixed rail. In the electric slide seat for a vehicle that feeds electric power to an electric motor fixed to the movable rail while sliding the movable contact provided on the vehicle, and electrically drives the movable rail back and forth by the driving force of the electric motor. The fixed contact is provided in a lateral groove formed on the side wall surface inside the fixed rail at an upper position away from the bottom surface of the fixed rail inside the fixed rail, and the entrance of the horizontal groove is abutted between the free ends. A plate-like movable contact formed by being shielded by a pair of upper and lower elastic seal members and formed substantially horizontally from the movable rail is inserted into a horizontal groove between the pair of upper and lower elastic seal members. By intrusion it was in sliding contact with the inside of the fixed contact.
[0011]
According to the first aspect of the present invention, since the entrance of the lateral groove is shielded by the pair of upper and lower elastic seal members, it is possible to prevent entry of dust, dust, water, etc. into the lateral groove. In addition, the plate-shaped movable contact that moves back and forth can easily penetrate into the lateral groove by expanding the free end of each elastic seal member that is abutted against each other, and can be surely brought into sliding contact with the internal fixed contact. it can.
Further, according to the present invention, since the fixed contact is provided at the upper position away from the bottom surface of the fixed rail, even if water enters the fixed rail, the fixed contact is not immersed in water .
Further, according to the present invention, since the fixed contact is provided in the lateral groove formed in the side wall surface of the fixed rail, it is difficult for dust, dust, water, etc. to adhere to the fixed contact. This eliminates the need for a strict dedicated cover and simplifies the structure around the fixed rail .
[0012]
In the invention according to claim 2, the free ends of the pair of upper and lower elastic sealing members are abutted in a state where they are cut obliquely.
[0013]
According to the second aspect of the present invention, since the free ends of the pair of upper and lower elastic seal members are cut obliquely to each other, the direction of bending of each elastic seal member is expanded when it is expanded by the movable contact that moves back and forth. In addition, the contact area with respect to the movable contact is increased in a state of being bent obliquely, so that intrusion of dust, dust, water, and the like from the contact portion can be reliably prevented.
[0014]
According to a third aspect of the present invention, the fixed contact has a substantially U-shaped cross section in which the upper and lower sides are urged in close contact with each other, and the movable contact is inserted between the upper and lower sides of the fixed contact to be freely slidable. It becomes.
[0015]
According to the third aspect of the present invention, when the movable contact is inserted between the upper and lower sides of the fixed contact, the slidable contact force with respect to the movable contact is increased by the biasing force of the upper and lower sides, so that reliable power transmission can be performed. Further, when the movable contact is not inserted between the upper and lower sides of the fixed contact, the upper and lower sides are brought into close contact with each other, so that intrusion of dust, dust, water, etc. into the fixed contact is prevented.
[0016]
In the fourth aspect of the invention, the movable contact is covered with the insulating member except for the insertion portion into the fixed contact.
[0017]
According to the invention described in claim 4 , since the portion other than the insertion portion into the fixed contact in the movable contact is covered with the insulating member, the movable contact is prevented from generating rust and the like. It is possible to prevent electrical troubles caused by inadvertent contact of metal objects. Since the movable contact insertion portion is always in sliding contact with the fixed contact, the friction keeps the surface clean.
[0018]
In the fifth aspect of the invention, the surface of the fixed contact other than the open end of the upper and lower sides is covered with the insulating member.
[0019]
In the invention according to claim 5 , since the surface of the fixed contact other than the open side ends of the upper and lower sides is covered with an insulating member, the fixed contact is prevented from generating rust and the like. In addition, it is possible to prevent electrical problems from occurring due to inadvertent contact with metal objects.
[0020]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a cross-sectional view showing only one side portion of the slide rail that supports the left and right sides of the seat 1. This slide rail basically includes a fixed rail 3 fixed to the floor 2 and a movable rail 4 fixed to the seat 1. Both the fixed rail 3 and the movable rail 4 are extruded products made of metal.
[0021]
The fixed rail 3 is substantially the same height as the carpet 5 laid on the floor 2 and has an open cross-sectional shape having an opening 6 on the upper surface. The movable rail 4 is housed inside the fixed rail 3, and the upper part protrudes upward from the opening 6, and the seat 1 is fixed thereto via a bracket 7.
[0022]
On the lower surface of the movable rail 4, rollers 8 are provided for sliding the movable rail 4 back and forth together with the seat 1, and balls 9 are provided on the left and right sides of the movable rail 4 to prevent backlash in the left-right direction. ing. A step cover 10 is provided on the upper side of the fixed rail 3 and closes the gap left in the opening 6.
[0023]
A switch box 12 is attached to the upper portion of the movable rail 4 via another bracket 11, and an operation portion 13 is projected from the side surface. Side covers 14 are provided above and below the switch box 12. The side cover 14 and the step cover 10 prevent dust, dust, water, and the like from entering to some extent, but do not strictly prevent the conventional dedicated cover, and are components that are normally provided on the seat 1. .
[0024]
A lateral groove 15 is formed along the front-rear direction on the left and right side wall surfaces inside the fixed rail 3. A fixed contact 16 is fixed in the horizontal groove 15 at an intermediate position spaced upward from the bottom surface of the horizontal groove 15. The fixed contact 16 is made of metal and has a substantially U-shaped cross-section in which the upper and lower sides are biased in a direction in close contact with each other, and is made of a resin (insulating member) that covers the surface other than the inner end on the open side. The holder 17 is fixed to the side wall surface of the lateral groove 15. A positive pole (+) and a negative pole (−) of a power source are connected to the left and right fixed contacts 16, respectively.
[0025]
The entrance of the lateral groove 15 is shielded by a pair of upper and lower elastic seal members 18 made of soft resin. The elastic seal member 18 is fixed to the fixed rail 3 with its upper and lower ends being shaped like a file, and the free ends 18a abutting each other in the vertical direction are in contact with each other. The free ends 18a are cut obliquely with respect to each other.
[0026]
On the other hand, a horizontal plate-like movable contact 19 is fixed to the movable rail 4. The movable contact 19 expands the pair of upper and lower elastic seal members 18 and enters the lateral groove 15, and inserts an outer end insertion portion 19 a between the upper and lower sides of the fixed contact 16 to attach the fixed contact 16. It can be slidably brought into contact with the fixed contact 16 by force. Except for the insertion portion 19a of the movable contact 19, it is covered with a laminate 20 made of resin (insulating member).
[0027]
A part of the laminate 20 is removed from the base portion of the movable contact 19 and the end of the lead wire 21 is soldered. The portions other than the soldered portion of the lead wire 21 are covered with an outer tube 22 (see FIG. 8). The lead wire 21 is routed in a recess 23 formed in the movable rail 4 and reaches the switch box 12.
[0028]
A wiring 24 extends from the switch box 12 and is connected to an electric motor M fixed to the lower surface of the seat 1. A gear (not shown) is provided at both ends of the rotating shaft of the electric motor M, and the gear 1 engages with a rack (not shown) provided along the fixed rail 3 so that the seat 1 is electrically driven forward and backward. It is like that.
[0029]
That is, the operation unit 13 of the switch box 12 is neutral in a non-operation state and does not flow any electricity, but by operating the operation unit 13 back and forth, the plus electrode (+) and the minus electrode (−) are switched. In this state, electricity flows through the electric motor M, the electric motor M rotates in the forward and reverse directions, and the seat 1 moves back and forth only while operating the operation unit 13 by hand.
[0030]
In this way, electricity from the power source is transferred to the switch box 12 regardless of the sliding position of the movable rail 4 by the sliding contact of the movable contact 19 of the movable rail 4 with the fixed contact 16 of the fixed rail 3. Flows. Then, by operating the operation unit 13 in the switch box 12, electricity can further flow to the electric motor M in a state where the plus and minus are reversed.
[0031]
In such a power feeding structure, since the fixed contact 16 is located in the lateral groove 15 provided inside the fixed rail 3, dust, dust, water, etc. are structurally attached to the fixed contact 16. It becomes difficult. Therefore, a strict dedicated cover for ensuring airtightness and watertightness as in the conventional case is not necessary, and the structure around the fixed rail 3 can be simplified.
[0032]
Further, since the entrance of the horizontal groove 15 is shielded by the pair of upper and lower elastic seal members 18, even if dust, dust, water, etc. enter the inside from the opening 6 of the fixed rail 3, they enter the horizontal groove 15. There is no.
[0033]
The pair of upper and lower elastic seal members 18 contact the free ends 18a in a portion where the movable contact 19 is not provided to prevent entry of dust, dust, water, etc., and the portion expanded by the movable contact 19 is also free end 18a. Is in contact with the laminate 20 portion of the movable rail 4 to prevent entry of dust, dust, water, and the like.
[0034]
As shown in FIGS. 4 and 5, the elastic seal member 18 has a free end 18a cut obliquely. Therefore, when the elastic seal member 18 is spread by the movable contact 19 that moves back and forth, the upper and lower elastic seal members 18 are Each bends in a different direction away from each other. Thus, since the direction in which the elastic seal member 18 bends is determined from the shape of the free end 18a, the dimensional design of the lateral groove 15 is easy. Furthermore, since the free end 18a is cut obliquely, the contact area with respect to the movable contact 19 in a state where the free end 18a is bent obliquely becomes larger compared to the case where the free end 18a is cut at right angles. Invasion of dust, water, etc. will be prevented more reliably. Even if water enters the lateral groove 15, the fixed contact 16 is not immersed in the invaded water because the fixed contact is provided at the upper position away from the bottom surface of the lateral groove 15.
[0035]
As shown in FIGS. 6 and 7, when the movable contact 19 is inserted between the upper and lower sides of the fixed contact 16, the fixed contact 16 is slid with respect to the insertion portion 19 a by the urging force of the fixed contact 16. The contact force increases and reliable power transmission can be performed. When the movable contact 19 is not inserted between the upper and lower sides of the fixed contact 16, the upper and lower sides are in close contact with each other, so that intrusion of dust, dust, water, etc. into the fixed contact 16 is prevented. When the movable contact 19 is inserted, the movable contact 19 can be slidably contacted with a clean inner surface free from dust and dirt.
[0036]
Furthermore, according to this embodiment, since the movable contact 19 is covered with the laminate 20 except for the insertion portion 19a into the fixed contact 16, it is possible to prevent the movable contact 19 from generating rust and the like, and Thus, it is possible to prevent electrical troubles caused by inadvertent contact of metal objects with the metal plate 19. Since the insertion portion 19a of the movable contact 19 is always in sliding contact with the fixed contact 16, the surface is kept clean by the friction.
[0037]
In the case of the fixed contact 16 as well as the movable contact 19, since the surface of the fixed contact 16 is covered with the holder 17, it is possible to prevent the fixed contact 16 from being rusted and the like. It is possible to prevent electrical products from being inadvertently touched and causing electrical troubles.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view showing an electric slide sheet according to an embodiment of the present invention.
2 is a perspective view showing the electric slide seat of FIG. 1. FIG.
FIG. 3 is an enlarged cross-sectional view showing a structure in a lateral groove in FIG. 1;
4 is a cross-sectional view showing a normal state of the elastic seal member of FIG. 3;
5 is a cross-sectional view showing a bent state of the elastic seal member of FIG. 3;
6 is a cross-sectional view showing a close contact state of upper and lower sides of the fixed contact of FIG. 3;
7 is a cross-sectional view showing a movable contact insertion state of the fixed contact of FIG. 3;
8 is a cross-sectional view taken along line SA-SA in FIG.
[Explanation of symbols]
1 Seat 3 Fixed Rail 4 Movable Rail 15 Horizontal Groove 16 Fixed Contact 17 Holder (Insulating Member)
18 Elastic seal member 18a Free end 19 Movable contact 19a Insert part 20 Laminate (insulating member)
M Electric motor

Claims (5)

A movable rail with a seat fixed is provided inside a fixed rail with an open cross-sectional shape fixed to the vehicle body, and the movable contact provided on the movable rail is slid on the fixed contact provided along the longitudinal direction of the fixed rail. In the electric slide seat for a vehicle that feeds power to the electric motor fixed to the movable rail while being in contact, and electrically drives the movable rail back and forth with the driving force of the electric motor.
The fixed contact is provided in a lateral groove formed on the side wall surface of the fixed rail at an upper position away from the bottom surface of the fixed rail inside the fixed rail, and the free groove is brought into contact with the free ends. The plate-shaped movable contact formed substantially horizontally from the movable rail is intruded into the lateral groove from between the pair of upper and lower elastic seal members and slidably contacts the internal fixed contact. An electric slide seat for a vehicle characterized by having been made. An electric slide seat for a vehicle according to claim 1 ,
An electric slide seat for a vehicle, characterized in that the free ends of a pair of upper and lower elastic sealing members are butted against each other while being cut obliquely. An electric slide seat for a vehicle according to claim 1 or 2 ,
A vehicle having a substantially U-shaped cross section in which a fixed contact is biased in a direction in which the upper and lower sides are brought into close contact with each other, and a movable contact is inserted between the upper and lower sides of the fixed contact so as to be slidable. Electric slide seat for use. An electric slide seat for a vehicle according to claim 3 ,
An electric slide seat for a vehicle, wherein a portion of the movable contact other than the insertion portion into the fixed contact is covered with an insulating member. The electric slide seat according to claim 3 or claim 4 ,
An electric slide seat for a vehicle, wherein the surface of a portion other than the open end of the upper and lower sides of the fixed contact is covered with an insulating member.

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