KR20060050877A - An apparatus for closing a sliding door - Google Patents

Abstract

(Problem) When setting the spring spring, the sliding door closing device provided with the means for displaying properly how much winding is provided is provided.

(Solution) The casing 12 of the sliding door closing device 10 has a short wall 24 extending in the transverse direction with respect to the shaft 14 on which the inner end of the spring is fixed, and the short wall 24 has an elongated guide. The hole 40 is formed. The cam plate 36 is fixed to the shaft 14, and the spiral groove 38 centering on the shaft 14 is formed in the surface which faces the end wall 24 of the cam plate. Between the end wall 24 and the cam plate 36, a rotation speed display member 42 slidingly engaged with the guide hole 40 and the spiral groove 38, respectively, is formed. When the helical groove 38 is rotated by the rotation of the cam plate 36 along with the rotation of the shaft 14, the rotation speed indicating member 42 moves along the guide hole 40.

Description

Sliding door closing device {AN APPARATUS FOR CLOSING A SLIDING DOOR}

1 is a partially cutaway perspective view of a sliding door closing device 10 according to the present invention.

FIG. 2 is a cross-sectional view taken along line II-II of FIG. 1.

FIG. 3 is a plan view taken along line III-III of FIG. 2.

4 is a plan view of the sliding door closing device 10 according to the present invention.

Explanation of symbols for main parts of the drawings

10: sliding door closing device

12: casing

14: shaft

16: drum

18: winding spring

20: wire

22: bulkhead

24: first single wall

28: second single wall

30: main wall

32: the first room

34: second room

36: cam plate

38: cam groove (cam outline)

40: guide hole

42: pin (speed display member)

44: holding member

46: scale

Patent Document 1: Japanese Patent Application Laid-Open No. 7-259424

Patent Document 2: Japanese Patent Application Laid-Open No. 7-259425

Patent Document 3: Japanese Utility Model Application Laid-open No. Hei 5-52164

Patent Document 4: Japanese Utility Model Registration No. 3081321

Patent Document 5: Japanese Unexamined Patent Publication No. 2002-81259

The present invention relates to a sliding door closing device for automatically returning and closing when the sliding door is opened.

The sliding door closing device is a device to return the open sliding door using a spring. The device is usually provided with a casing, a shaft mounted to the casing so as to be rotatable about an axis, a drum mounted on the shaft in the same axial shape and relatively rotatable with respect to the shaft, and an inner end of the casing. Its main components include a spring that is fixed, an outer end fixed to the drum, a wire wound on the drum, one end fixed to the drum, and the other end extending out of the casing to be connected to the sliding door.

The sliding force of the sliding door closing device when the sliding door is opened is due to the restoring force of the spring that is further wound than the previously wound state by opening the sliding door. In other words, the restoring force of the mainspring spring, and therefore the return force to the sliding door, is determined according to the extent to which the mainspring spring is wound in advance. Therefore, the spring closing device is configured to wind the springs in advance according to the weight of the sliding door on which it is mounted and the like, and to adjust the return force to the sliding door (for example, Patent Document 1, Patent Document 2, Patent Document 3, Patent Document). 4).

Therefore, in this type of closing device, it is important to know how many times the spring is wound to give the restoring force required for the spring.

However, in this type of closing device of the related art, there is a possibility that the display function therefor is not sufficient, and the spring spring is rolled up too much and the spring spring is damaged. For this reason, although the apparatus which shows how much the spring spring was wound up was developed (patent document 5), the thing for displaying it correctly is not developed.

Means to solve the problem

In view of the above, an object of the present invention is to provide a sliding door closing device provided with means for properly displaying how much the spring is wound.

That is, the present invention

Casing,

A shaft mounted to the casing so as to be rotatable about an axis;

A drum mounted on the shaft in the same axial shape, the drum being rotatable relative to the shaft,

A spring that is secured to the shaft by the inner end and is fixed to the drum,

In a sliding closure device having a wire wound on a drum, one end of which is fixed to the drum, the other end of which extends out of the casing to be pulled out of the casing to rotate the drum in a winding direction of the spring.

The casing has a short wall extending transverse to the shaft,

The short wall is formed with a long elongated guide hole,

The shaft is formed with a cam plate fixed to the shaft in the casing and having a surface facing the end wall,

On the face of the cam plate a spiral cam contour is formed around the shaft,

A rotation speed display member is formed between the end wall and the cam plate by slidingly engaging the guide hole and the cam contour portion.

When the cam plate is rotated as the shaft is rotated, the rotation speed display member is relatively displaced while the cam contour is sliding with respect to the rotation speed display member, and the rotation speed display member is thus radially relative to the shaft along the guide hole. It provides a sliding closure device, characterized in that it is configured to move away or close.

Specifically, the cam plate can be formed into a disk shape, and the cam contour portion can be formed as a spiral groove around the shaft.

More specifically, the guide hole may be extended along a radial line about the axis of the shaft.

To practice the invention  Best form for

EMBODIMENT OF THE INVENTION Hereinafter, embodiment of the sliding door closing apparatus which concerns on this invention is described based on an accompanying drawing.

1 is a partially cutaway perspective view of a sliding door closing device 10 according to the present invention, and FIG. 2 is a cross-sectional view taken along the line II-II of FIG. 1.

As shown in the drawing, the sliding closure device 10 includes a casing 12, a shaft 14 mounted rotatably with respect to an axis with respect to the casing 12, and a shaft having the same axis in the shaft 14. A drum 16 which is mounted in a shape, which is relatively rotatable with respect to the shaft, the inner end being fixed to the shaft, the outer end being fixed to the drum, and the spring spring 18 fixed to the drum, one end being The wire 20 is fixed to the drum, and the other end extends out of the casing to be drawn out of the casing to rotate the drum in the direction in which the spring winds.

The casing 12 has a first end wall 24 and a second end wall 28 and a circumferential wall 30 formed at intervals in the axial direction of the shaft 14. The casing 12 further has a partition wall 22 extending in a direction perpendicular to the shaft 14, and divides the inside of the casing 12 into first and second chambers 32 and 34.

In the first chamber 32, a drum 16 wound around the wire 20 is formed to be rotatable around the shaft 14. A spring 50 is formed in the drum 16.

In the second chamber 34, a disc shaped cam plate 36 fixed to the shaft 14 and adapted to rotate and slide on the partition wall 22 is formed. The cam plate 36 has a plane facing the first end wall 24, and as shown in Fig. 3, the cam plate 36 has a spiral cam profile around the shaft 14, in the embodiment shown in the figure. The cam groove 38 as an outline part is formed.

In contrast, the first end wall 24 is formed with an elongated guide hole 40 extending along a radial line around the shaft 14.

A pin 42 as a rotation speed display member is formed between the first end wall 24 and the cam plate 36, one end of which is fitted to the cam groove 38 so as to be slidable, and the other end thereof is the guide hole 40. Passed through A disc-shaped retaining member 44 is attached to the pin 42, and the retaining member 44 is configured such that both end surfaces thereof slide on the inner surface of the first end wall 24 and the surface of the cam plate 36. It acts to hold the pin 42 at right angles to the first end wall 24 and the cam plate 36.

The sliding door closing device 10 is configured as described above, and in order to set the force for inserting the wire 20 of the spring spring 18, the concave of the shaft 14 (located at the top as seen in FIGS. 1 and 2) is concave. By rotating the shaft 14 by engaging a driver with the part, the drum 16 rotates in the direction in which the spring spring 18 is wound.

When the shaft 14 is rotated, the cam plate 36 fixed to the shaft 14 is rotated together with the shaft 14. Accordingly, the cam groove 38 formed in the cam plate 36 also rotates in the counterclockwise direction as shown in FIG. 1, and the pin 42 is formed by the guide hole (formed in the first end wall 24 of the casing 12). Since it is engaged with 40, rotation is impossible, and therefore, it is displaced outward along the guide hole 40. The displacement is proportional to the rotation of the shaft 14.

FIG. 4 shows the guide hole 40 formed in the first end wall 24 and the scale 46 formed parallel thereto, so that the displacement of the pin 42 according to the rotation of the shaft 14 can be detected. have.

The sliding door closing device according to the present invention is configured as described above. When the shaft is rotated in the winding direction of the spring to set the spring in advance, the rotation speed display member is proportional to the rotation angle or the number of rotations. It is displaced in the radial direction with respect to the shaft of the short wall of the said closed device, and it becomes possible to easily recognize the wound state of a spring spring according to the said drum.

Claims (3)

Casing, A shaft mounted to the casing so as to be rotatable about an axis; A drum mounted on the shaft in the same axial shape, the drum being rotatable relative to the shaft, A spring that is secured to the shaft by the inner end and is fixed to the drum, In a sliding closure device having a wire wound on a drum, one end of which is fixed to the drum, the other end of which extends out of the casing to be pulled out of the casing to rotate the drum in a winding direction of the spring. The casing has a short wall extending transverse to the shaft, The short wall is formed with a long elongated guide hole, The shaft is formed with a cam plate fixed to the shaft in the casing and having a surface facing the end wall, On the face of the cam plate a spiral cam contour is formed about the shaft, A rotation speed display member is formed between the end wall and the cam plate by slidingly engaging the guide hole and the cam contour portion. When the cam plate is rotated as the shaft is rotated, the rotation speed display member is relatively displaced while the cam contour is sliding with respect to the rotation speed display member, and the rotation speed display member is thus radially relative to the shaft along the guide hole. Sliding closure device, characterized in that it is configured to move away or close. The sliding door closing device according to claim 1, wherein the cam plate is disk-shaped, and the cam contour is a groove spirally formed about the shaft. The sliding door closing device according to claim 1 or 2, wherein the guide hole extends in a radial direction about an axis of the shaft.

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