1287069 (1) 九、發明說明 【發明所屬之技術領域】 本發明是當開啓拉門時，用來自動回拉並閉合的的拉 門閉合裝置。 【先前技術】 拉門閉合裝置，是利用發條彈簧使開啓後的拉門復位 p 的裝置。通常該裝置具備：外殼；和以軸線作爲中心而可 自由迴轉地組裝於外殼的軸；和與該軸形成同軸狀組裝， 且能與軸形成相對迴轉的捲筒；和內端固定於軸，外端固 定於捲筒的發條彈簧，·及捲繞於捲筒，且其中一端固定於 該捲筒’另一端朝外殼外部延伸而連接於拉門的繩索，作 爲主要的構成元件。 拉門閉合裝置是形成：開啓拉門時該拉門的回拉力， 是仰賴開門的動作，在此之前，則仰賴較預先捲繞狀態更 φ加捲繞之發條彈簧的回復力。換言之，仰賴該發條彈簧之 回復力而作用於拉門的回拉力，是取決於發條彈簧預先捲 繞的程度。因此，拉門閉合裝置，是對應於欲組裝之拉門 的重量來預先捲繞發條彈簧，來調整對拉門的回拉力。（ 譬如：請參考專利文獻1〜4 )。 〔專利文獻1〕 日本特開平7-259424號公報 〔專利文獻2〕 日本特開平7-259425號公報 (2) 1287069 〔專利文獻3〕 曰本實開平5-52 1 64號公報 〔專利文獻4〕 日本實用新案證書號第3 08 1 32 1號專利 〔專利文獻5〕 日本特開2002-8 1 259號公報 _ 【發明內容】 〔發明欲解決之課題〕 綜上所述，在該類的閉合裝置中，爲了對發條彈簧作 用所需的回復力，必須了解需要對該發條彈簧進行幾圈的 捲繞，而此一捲繞程度對賦予適當回復力而言極爲重要。 話雖如此，在習知的該類閉合裝置中，顯示上述狀態 的功能並不充分而導致發條彈簧的過度捲繞，使得該發條 彈簧有破損之虞。有鑑於此，雖然針對能顯示發條彈簧之 φ捲繞程度的裝置進行開發（專利文獻5 )，卻未能開發出 可正確顯示的技術。 〔解決課題之手段〕 本發明是有鑑於上述問題所硏發的發明，本發明的目 的在於：提供一種拉門閉合裝置，且該拉門閉合裝置具備 當設定發條彈簧時，能正確顯示其捲繞程度的手段。 換言之，本發明的拉門閉合裝置，是具備：外殼；及 以軸線作爲中心而可自由迴轉地組裝於外殼的軸；及與該 -5- (3) 1287069 軸形成同軸狀組裝，且能與軸形成相對迴轉的捲筒；及內 端固定於軸，外端固定於捲筒的發條彈簧；及藉由捲繞於 捲筒且其中一端固定於該捲筒，另一端朝外殼外部延伸而 使捲筒在發條彈簧的捲繞方向上形成迴轉之繩索的拉門閉 合裝置，其特徵爲：外殻具有朝軸之橫向延伸的端壁；於 該端壁設有細長的導引孔；軸設有凸輪板，而該凸輪板是 在外殼內固定於該軸且具有面向上述端壁的面；在凸輪板 | 的上述面設有以軸爲中心的螺旋狀凸輪輪廓線部；在上述 端壁與凸輪板之間，設有滑動卡合於上述導引孔及凸輪輪 廓線部的迴轉數顯示構件；該迴轉數顯示構件是形成：當 凸輪板隨著軸的迴轉而產生迴轉時，凸輪輪廓線部一邊對 迴轉數顯示構件形成滑動一邊形成相對位移，而使迴轉數 顯示構件隨著上述的移動而沿著導引孔於半徑方向上遠離 軸或著靠近軸。 具體來說，凸輪板爲圓盤狀，凸輪輪廓線部是以軸爲 φ中心而形成螺旋狀的溝。 更具體地說，導引孔是以軸爲中心而沿著放射線形成 延伸。 〔發明的效果〕 本發明的拉門閉合裝置，是構成上述構造的裝置，爲 了預先設定發條彈簧，當令軸在捲繞該發條彈簧的方向上 迴轉時，對其迴轉角度或迴轉圈數形成比例，而使迴轉數 顯示裝置以該閉合裝置端壁的軸爲基準進而在半徑方向上 -6 - (4) 1287069 形成位移，可容易隨著捲筒來辨識發條彈簧的捲繞狀態° 【實施方式】 〔實施型態〕 接下來，根據圖面說明本發明之拉門閉合裝置的的實 施型態。 第1圖爲本發明之拉門閉合裝置1 0的部分剖面立體 圖，第2圖爲第1圖中Π _ Π線視角的剖面圖。 如圖面所示，該拉門閉合裝置1 0具有：外殼12 ;及 以軸線作爲中心而可自由迴轉地組裝於外殼1 2的軸1 4 〃 及與該軸1 4形成同軸狀組裝，且能與軸形成相對迴轉的 捲筒16;及內端固定於軸，外端固定於捲筒的發條彈簧 18;及藉由捲繞於捲筒且其中一端固定於該捲筒，另一端 朝外殼外部延伸而使捲筒在發條彈簧的捲繞方向上形成迴 轉的繩索20。 外殼12具有：周壁30、及在軸14的軸線方向上保持 距離而設置的第1端壁24與第2端壁28。該外殼12還具 有在垂直於軸14的方向形成延伸的分隔壁22，外殻12內 是分隔成第1室32與第2室34。 在第1室32內，捲繞有繩索20的捲筒16是可自由 迴轉地設於軸1 4的外周。在捲筒1 6內則設有發條彈簧1 8 在第2室34內，設有固定於軸14且於分隔壁22上 形成迴轉的圓盤狀凸輪板36。該凸輪板36具有面向第1 (5) 1287069 端壁24的的平面，該平面設有如第3圖所示之以軸14作 爲中心的螺旋狀凸輪輪廓部，圖面中所示的實施例，是設 置凸輪溝3 8來作爲螺旋狀凸輪輪廓部。 相對於此，在第1端壁24則設有以軸1 4爲中心沿著 放射線延伸的細長導引孔4 0。 在第1端壁24與凸輪板36之間設有作爲迴轉數顯示 構件的銷42，銷42的其中一端是可滑動地嵌入凸輪溝38 _ ，另一端則貫穿導引孔40。銷42組裝有圓盤狀的保持構 件44，該保持構件44是形成可滑動於第1端壁24的內面 與凸輪板36的表面，而可發揮使銷42垂直於第1端壁24 與凸輪板3 6的作用。 拉門閉合裝置10是形成上述結構的裝置，爲了設定 發條彈簧18將繩索回拉的力量，是將螺絲起子卡合於軸 14的凹部（第1圖及第2圖中的上端），藉由使該軸14 迴轉，可使捲筒16在該發條彈簧18之捲繞方向上形成迴 φ轉。 一旦軸14形成迴轉，固定於該軸14的凸輪板36將 與軸14同步迴轉。據此，雖然形成於該凸輪板36的凸輪 溝3 8也將如第1圖所示朝逆時針方向迴轉，但由於銷42 是卡合在形成於外殼12之第1端壁24的導引孔40，所以 不會產生迴轉，因此可沿著該導引孔40產生位移。而該 位移與軸1 4的迴轉成比例。 第4圖，是顯示形成於第1端壁24的導引孔40、及 設成平行於該導引孔40的量尺46，可測量銷42隨著上述 -8- (6) 1287069 軸1 4之迴轉所產生的位移。 【圖式簡單說明】 第1圖：本發明之拉門閉合裝置1 0的部分剖面立體 圖。 第2圖：第1圖中Π — Π線視角的剖面圖。 第3圖：第2圖中m — ΠΙ線視角的俯視圖。 第4圖：本發明之拉門閉合裝置1 0的俯視圖。 【主要元件符號說明】 1 〇 :拉門閉合裝置 12 :外殼 14 :軸 1 6 :捲筒 1 8 :發條彈簧1287069 (1) Description of the Invention [Technical Field] The present invention is a sliding door closing device for automatically pulling back and closing when a sliding door is opened. [Prior Art] The sliding door closing device is a device that uses a spring to return the sliding door after the opening to the p. Usually, the device includes: a casing; and a shaft rotatably assembled to the casing with the axis as a center; and a reel which is coaxially assembled with the shaft and which is rotatable relative to the shaft; and the inner end is fixed to the shaft, The spring end is fixed to the spring of the reel, and is wound around the reel, and one end of the reel is fixed to the other end of the reel and extends to the outside of the casing to be connected to the sliding door as a main constituent element. The sliding door closing device is formed such that the pulling back force of the sliding door when the sliding door is opened is dependent on the operation of opening the door, and before that, the restoring force of the winding spring is more φ than the pre-wound state. In other words, the pull-back force acting on the sliding door depending on the restoring force of the spring is dependent on the extent to which the spring is pre-rolled. Therefore, the sliding door closing device pre-winds the spring spring corresponding to the weight of the sliding door to be assembled to adjust the pull-back force of the sliding door. (For example, please refer to Patent Documents 1 to 4). [Patent Document 1] Japanese Patent Laid-Open No. Hei 7-259424 (Patent Document 2) Japanese Laid-Open Patent Publication No. Hei 7-259425 (2) 1287069 [Patent Document 3] 曰本实开平5-52 1 64号 [Patent Document 4] 〕 Japanese Utility Model No. 3 08 1 32 1 Patent [Patent Document 5] Japanese Laid-Open Patent Publication No. 2002-8 1 259 _ [Disclosed] [Problems to be Solved by the Invention] In summary, in this category In the closing device, in order to restore the spring force required for the spring, it is necessary to know that it is necessary to wind the spring spring several times, and this degree of winding is extremely important for imparting an appropriate restoring force. Having said that, in the conventional closure device of this type, the function of displaying the above state is not sufficient, resulting in excessive winding of the spring, which causes the spring of the spring to be damaged. In view of the above, the device for displaying the degree of φ winding of the spring is developed (Patent Document 5), but a technique that can be correctly displayed has not been developed. [Means for Solving the Problems] The present invention has been made in view of the above problems, and an object of the present invention is to provide a sliding door closing device which is capable of correctly displaying a spring when a spring is set. The means of winding. In other words, the sliding door closing device of the present invention includes: a casing; and a shaft that is rotatably assembled to the casing with the axis as a center; and is coaxially assembled with the -5- (3) 1287069 shaft, and can be combined with The shaft forms a relatively rotating reel; and the spring end is fixed to the shaft, the outer end is fixed to the spring of the reel; and by being wound around the reel and one end is fixed to the reel and the other end is extended to the outside of the housing a sliding door closing device for forming a revolving rope in a winding direction of a spring, wherein the outer casing has an end wall extending laterally to the shaft; and the end wall is provided with an elongated guiding hole; The shaft is provided with a cam plate fixed to the shaft in the outer casing and having a surface facing the end wall; the surface of the cam plate| is provided with a spiral cam contour portion centered on the shaft; Between the end wall and the cam plate, there is provided a rotation number display member that is slidably engaged with the guide hole and the cam contour portion; the rotation number display member is formed when the cam plate rotates with the rotation of the shaft, Cam contour line side to side The number-of-turns display member forms a relative displacement by sliding, and causes the number-of-turns display member to move away from the axis or the axis in the radial direction along the guide hole in accordance with the above-described movement. Specifically, the cam plate has a disk shape, and the cam contour portion has a spiral groove formed by the center of the axis φ. More specifically, the guide hole is formed to extend along the radiation centering on the axis. [Effects of the Invention] The sliding door closing device of the present invention is a device constituting the above-described structure, and in order to set the spring spring in advance, when the shaft is rotated in the direction in which the spring is wound, the rotation angle or the number of revolutions The ratio is formed, and the rotation number display device is displaced by the axis of the end wall of the closing device and further displaced in the radial direction by -6 - (4) 1287069, and the winding state of the spring spring can be easily recognized with the reel. [Embodiment] [Embodiment] Next, an embodiment of a sliding door closing device of the present invention will be described based on the drawings. Fig. 1 is a partial cross-sectional perspective view of the sliding door closing device 10 of the present invention, and Fig. 2 is a cross-sectional view taken along the line Π _ 第 in Fig. 1. As shown in the drawing, the sliding door closing device 10 has a casing 12 and a shaft 1 4 组装 that is rotatably assembled to the casing 12 with the axis as a center, and is assembled coaxially with the shaft 14 and a reel 16 capable of forming a relative rotation with the shaft; and a spring spring 18 having an inner end fixed to the shaft, the outer end being fixed to the reel; and being wound around the reel and having one end fixed to the reel and the other end The outer portion of the outer casing extends such that the reel forms a rotating rope 20 in the winding direction of the spring. The outer casing 12 has a peripheral wall 30 and a first end wall 24 and a second end wall 28 which are provided to maintain a distance in the axial direction of the shaft 14. The outer casing 12 also has a partition wall 22 extending in a direction perpendicular to the shaft 14, and the outer casing 12 is partitioned into a first chamber 32 and a second chamber 34. In the first chamber 32, the spool 16 around which the rope 20 is wound is provided on the outer circumference of the shaft 14 so as to be rotatable. A spring spring 18 is provided in the spool 16 in the second chamber 34, and a disk-shaped cam plate 36 fixed to the shaft 14 and formed on the partition wall 22 is provided. The cam plate 36 has a plane facing the first (5) 1287069 end wall 24, the plane being provided with a helical cam profile centered on the shaft 14 as shown in Fig. 3, the embodiment shown in the drawing, The cam groove 38 is provided as a spiral cam profile portion. On the other hand, the first end wall 24 is provided with an elongated guide hole 40 extending along the axis of the shaft 14 along the radiation. A pin 42 as a number-of-revolutions display member is provided between the first end wall 24 and the cam plate 36. One end of the pin 42 is slidably fitted into the cam groove 38_, and the other end penetrates the guide hole 40. The pin 42 is assembled with a disk-shaped holding member 44 which is formed to be slidable on the inner surface of the first end wall 24 and the surface of the cam plate 36, and is configured to make the pin 42 perpendicular to the first end wall 24 and The role of the cam plate 36. The sliding door closing device 10 is a device that forms the above-described structure. In order to set the force that the spring spring 18 pulls back the rope, the screwdriver is engaged with the concave portion of the shaft 14 (the upper end in FIGS. 1 and 2). By rotating the shaft 14, the spool 16 can be made to return to the φ turn in the winding direction of the spring spring 18. Once the shaft 14 is turned, the cam plate 36 secured to the shaft 14 will rotate in synchronism with the shaft 14. Accordingly, although the cam groove 38 formed in the cam plate 36 is rotated counterclockwise as shown in Fig. 1, the pin 42 is engaged with the guide formed on the first end wall 24 of the outer casing 12. The hole 40 is so as not to be rotated, so that displacement can be generated along the guide hole 40. The displacement is proportional to the rotation of the shaft 14. Figure 4 is a view showing a guide hole 40 formed in the first end wall 24, and a gauge 46 disposed parallel to the guide hole 40. The measurable pin 42 can be measured along with the above-mentioned -8-(6) 1287069 axis 1 The displacement produced by the rotation of 4. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a partial cross-sectional perspective view of a sliding door closing device 10 of the present invention. Figure 2: Section 1 of the Π-Π line of view in Figure 1. Figure 3: Top view of m- 视角 line view in Figure 2. Fig. 4 is a plan view of the sliding door closing device 10 of the present invention. [Description of main component symbols] 1 〇 : Sliding door closing device 12 : Housing 14 : Shaft 1 6 : Reel 1 8 : Spring
22 :分隔壁 24 :第1端壁 28 :第2端壁 3 0 :周壁 3 2 ··第1室 34 :第2室 3 6 :凸輪板 3 8 :凸輪槽（凸輪輪廓線部） -9- (7) (7)128706922: partition wall 24: first end wall 28: second end wall 30: peripheral wall 3 2 · first chamber 34: second chamber 3 6 : cam plate 3 8 : cam groove (cam contour portion) -9 - (7) (7) 1287069
40 :導引孔 42 :銷（迴轉數表示構件） 4 4 :保持構件 46 :量尺 -10-40 : Guide hole 42 : Pin (revolution number indicates member) 4 4 : Holding member 46 : Measuring rule -10-