WO2008000162A1 - Structure d'assemblage d'un montant et d'un échelon d'une échelle - Google Patents
Structure d'assemblage d'un montant et d'un échelon d'une échelle Download PDFInfo
- Publication number
- WO2008000162A1 WO2008000162A1 PCT/CN2007/001945 CN2007001945W WO2008000162A1 WO 2008000162 A1 WO2008000162 A1 WO 2008000162A1 CN 2007001945 W CN2007001945 W CN 2007001945W WO 2008000162 A1 WO2008000162 A1 WO 2008000162A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- hole
- leg tube
- side wall
- screw
- leg
- Prior art date
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06C—LADDERS
- E06C1/00—Ladders in general
- E06C1/02—Ladders in general with rigid longitudinal member or members
- E06C1/04—Ladders for resting against objects, e.g. walls poles, trees
- E06C1/08—Ladders for resting against objects, e.g. walls poles, trees multi-part
- E06C1/12—Ladders for resting against objects, e.g. walls poles, trees multi-part extensible, e.g. telescopic
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06C—LADDERS
- E06C7/00—Component parts, supporting parts, or accessories
- E06C7/08—Special construction of longitudinal members, or rungs or other treads
- E06C7/082—Connections between rungs or treads and longitudinal members
- E06C7/086—Connections between rungs or treads and longitudinal members with a connecting piece inserted in a hollow rung
Definitions
- the invention belongs to the field of daily necessities, and in particular relates to a connection structure of a ladder leg tube and a pedal.
- Ladders are a tool used primarily for picking up and dropping items. They are widely used in a variety of different situations, especially retractable ladders. Due to their height, they are favored.
- the ladder usually includes a leg pole and a pedal.
- the leg pole has at least two legs.
- the long hollow tubular body is used, which is also called a leg tube. If it is a herringbone ladder, the leg tube usually needs four.
- the pedal When the ladder is When the telescopic ladder is used, the leg tube is a retractable structure; the pedal usually has many roots, and the number depends mainly on the height of the ladder, or the length of the leg tube, and the longer the leg tube, the more pedals are needed.
- the pedal is generally connected in a horizontal direction between the two vertical leg tubes.
- connection structure of the ladder leg tube and the pedal in the prior art is fixed by screwing through the leg tube and the pedal.
- the pedal is connected between the inner side walls of the leg tube.
- the screw needs to bear a large shear force at the junction of the leg tube and the pedal, thereby affecting the connection strength between the leg tube and the pedal.
- the pedal is not easy to install; the connection structure of the ladder leg tube and the pedal is fixed by screwing the pedal through the pedal and the leg tube is screwed. At this time, the pedal is connected between the front side walls of the leg tube.
- the screw also needs to bear a large shear force at the junction of the leg tube and the pedal, and thus also affects the connection strength between the leg tube and the pedal; another connection structure of the ladder leg tube and the pedal is on the leg tube.
- the hole is preliminarily provided, and then the end of the pedal is passed out from the leg tube and riveted to the outer side wall of the leg tube.
- This riveting method is not too hard because the pedal can be riveted with the leg tube. Otherwise, it is impossible to rive the joint, and in the case of insufficient hardness, the joint strength must be ensured.
- the contact area between the pedal and the leg tube must be increased, so that the cross-section of the pedal is further increased, so that the pedal is made. The material is further increased, and therefore, it is easy to cause an increase in cost.
- the object of the present invention is to overcome the deficiencies of the prior art and provide a connection structure between a ladder leg tube and a pedal, which can enhance the connection strength between the pedal and the leg tube, and can reduce the usage amount of the pedal material and thereby reduce the manufacturing cost. It can reduce the labor intensity of the operator during the process of connecting the pedal to the leg tube.
- the technical solution adopted by the present invention to solve the technical problem thereof is: a connection of a ladder leg tube and a pedal
- a crossbar disposed along the length of the pedal, the end of the crossbar is provided with a screwing portion, and the screwing portion is adjacent to or through the second hole of the leg tube;
- the bottom of the cup is provided with a through hole, and the cup is provided with a lip; the cup is sleeved into the leg cavity by the first hole of the outer side wall of the leg tube, and the through hole of the cup bottom is opposite to the second hole of the inner side wall of the leg tube The edge of the cup abuts against the edge of the first hole of the outer side wall of the leg tube;
- the fastener is screwed into the cup body or through the through hole of the cup bottom and the second hole of the inner side wall of the leg tube is fixedly screwed to the end of the cross bar.
- the crossbar of the pedal is a solid rod body, and the pedal is provided with a connecting hole for positioning the crossbar.
- the screwing end of the cross rod end is an external thread structure, and the screw is a nut, and the nut is screwed in the cup body and the external thread structure of the second rod hole of the inner side wall of the leg tube and the end of the metal rod through hole. The phase is fixed and the end face of the nut is pressed against the bottom of the cup.
- the screwing portion of the end of the crossbar is an external thread structure, and the screw is a nut, and the screwing portion of the nut sequentially passes through the through hole of the metal cup, the second hole of the inner side wall of the leg tube and the external thread of the end of the cross rod
- the structural screwing phase is fixed, and the cap of the nut is pressed against the bottom of the cup.
- the screwing portion of the end of the crossbar is a screw hole provided along the axial direction of the crossbar, and the screw is a screw, and the screw head of the screw sequentially passes through the through hole of the metal cup, the second hole of the inner side wall of the leg tube and the crossbar
- the screw hole of the end is screwed and fixed, and the cap of the screw is pressed against the bottom of the cup.
- Another connection structure of the ladder leg tube and the pedal includes:
- a crossbar disposed along the length of the pedal, the end of the crossbar is provided with a screwing portion, and the screwing portion of the end of the crossbar passes through the second hole of the leg tube and approaches or passes through the first hole of the leg tube;
- the middle hole of the gasket is opposite to the first hole of the tube, and the end surface of the gasket is pressed against the outer side wall of the first hole of the leg tube;
- the fastener is screwed to the outside of the outer side wall of the leg tube or through the middle hole of the spacer and the first hole of the outer side wall of the leg tube to be screwed to the end of the cross bar.
- the crossbar of the pedal is a solid rod body, and the pedal is provided with a connecting hole for positioning the crossbar.
- the screwing end of the cross rod end is an external thread structure, and the screw is a nut.
- the nut is outside the outer side wall of the leg tube and sequentially passes through the second hole of the inner side wall of the leg tube, the first hole of the outer side wall of the leg tube, and the gasket.
- the external thread structure of the end of the cross rod of the middle hole is fixed by screwing, and the end surface of the nut is pressed against the gasket.
- the screwing portion of the end of the crossbar is an external thread structure, and the screw is a nut, and the screwing portion of the nut sequentially passes through the middle hole of the gasket, the first hole of the outer side wall of the leg tube and the inner side of the leg tube
- the external thread structure of the end of the cross rod of the second hole of the wall is screwed and fixed, and the cap of the nut is pressed against the gasket.
- the screwing portion of the end of the crossbar is a screw hole provided along the axial direction of the crossbar, and the screw is a screw, and the wire head of the screw sequentially passes through the middle hole of the gasket and the first hole of the outer side wall of the leg tube and The screw hole of the cross rod end of the second hole passing through the inner side wall of the leg tube is screwed and fixed, and the cap of the screw is pressed against the gasket.
- the connecting structure of the ladder leg tube and the pedal of the invention is suitable for a common ladder, that is, a ladder composed of two leg tubes and a plurality of pedals; also suitable for a ladder, that is, a four leg tube and a plurality of pedals
- the ladder is also applicable to the telescopic ladder, that is, the leg tube is a retractable structure.
- the leg tube is generally divided into a front leg tube and a rear leg tube, and the tube wall of the front leg tube is integrally extended backward.
- the bent hook piece has a bent hook piece which can be correspondingly fitted to the tube wall of the rear leg tube, and the front leg tube and the rear leg tube are mutually axially mutually passed through the respective hook pieces.
- the telescopic leg tube structure is configured to be axially slidable relative to each other and positioned in the radial direction, such that the front leg tube and the rear leg tube are juxtaposed, respectively, and can be respectively rotated with the end of the corresponding crossbar of the pedal The phase is fixed.
- the connecting structure of the ladder leg tube and the pedal of the present invention is recessed inwardly along the longitudinal direction of the hollow tubular body on the outer surface of the inner and outer side walls of the leg tube to form a long drawway, and the pedal is correspondingly mounted in the draw.
- the edge of the pedal forms a phase-locking action with the groove of the leg tube, which facilitates the installation of the pedal and prevents the pedal from being turned over.
- the invention has the beneficial effects that since the first hole and the opposite second hole are respectively disposed on the outer side wall and the inner side wall of the leg tube, the cross bar of the solid rod body is arranged in the pedal, and the end of the cross bar is set
- the screwing portion having the external thread structure or the screw hole structure can be screwed and fixed between the two leg tubes by the cooperation of the screw, the metal cup or the gasket and the first hole and the second hole of the leg tube.
- the pedal on the crossbar is installed between the two leg tubes, and the connection between the ladder leg tube and the pedal can not only enhance the connection strength between the pedal and the leg tube, but also reduce the usage of the pedal material.
- the manufacturing cost is reduced, and at the same time, the labor intensity of the operator during the process of connecting the pedal to the leg tube can be reduced, in particular, a separate rod member, that is, a cross rod and a leg tube, is used.
- a separate rod member that is, a cross rod and a leg tube.
- connection structure of the ladder leg tube and the pedal of the present invention is not limited to the embodiment.
- Figure 1 is a schematic cross-sectional view showing the first embodiment of the present invention
- Figure 2 is a schematic cross-sectional view showing the leg tube of the first embodiment of the present invention.
- Figure 3 is a schematic cross-sectional view showing the pedal of the first embodiment of the present invention.
- Figure 4 is a schematic cross-sectional view showing the second embodiment of the present invention.
- Figure 5 is a schematic cross-sectional view showing the third embodiment of the present invention.
- Figure 6 is a schematic cross-sectional view showing the fourth embodiment of the present invention.
- Figure 7 is a schematic cross-sectional view showing the fifth embodiment of the present invention.
- Figure 8 is a schematic cross-sectional view showing the sixth embodiment of the present invention.
- Embodiment 1 Referring to FIG. 1 to FIG. 3, a connection structure of a ladder leg tube and a pedal of the present invention is used on a telescopic ladder, and of course, it can also be used in a two leg tube and a plurality of pedals.
- Ordinary ladder, or a ladder with four leg tubes and a plurality of pedals; and such a retractable ladder generally adopts a structure of a front leg tube 1 and a rear leg tube 9, and the tube wall of the front leg tube 1 is integrally oriented
- the rear extension tube is provided with a bent hook piece, and the tube wall of the rear leg tube 9 integrally extends forwardly to provide a correspondingly buckled hook piece, and the front leg tube 1 and the rear leg tube 9 pass through respective buckles.
- the hook pieces are axially nested with each other to form a telescopic leg tube structure which can slide along the axial direction and are mutually positioned in the radial direction, so that the front leg tube 1 and the rear leg tube 9 are juxtaposed and can respectively correspond to the respective legs.
- the end of the crossbar of the pedal is fixedly screwed, the pedal 2 is coupled between the two front leg tubes 1, and the pedal 8 is coupled between the two rear leg tubes 9.
- connection between the front leg tube 1 (hereinafter referred to as the leg tube) and the pedal 2 is taken as an example to illustrate the connection structure of the ladder leg tube and the pedal, and the connection between the rear leg tube 9 and the pedal 8 is similar.
- the connecting structure of the ladder leg tube and the pedal of the present invention comprises - a first ? L 11 disposed on an outer side wall of the leg tube 1 composed of a hollow metal tubular body and a second hole 12 on the opposite inner side wall:
- a crossbar 3 disposed along the longitudinal direction of the pedal 2, the end of the crossbar 3 is provided with a screwing portion, and the screwing portion is a screw Grain structure 31;
- the bottom of the cup is provided with a through hole, and the cup is provided with a lip 41; the cup is sleeved into the leg lumen by the first hole 11 of the outer side wall of the leg tube 1, the through hole of the bottom of the cup and the inner side wall of the leg tube
- the second hole 12 is opposite to the edge of the first lip 11 of the leg tube;
- the nut 51 is fixed in the cup body 4 with the external thread structure 31 of the cross rod 3 end which is sequentially passed through the second hole 12 of the inner side wall of the leg tube 1 and the through hole of the metal cup 4, and the end surface of the nut 51 is pressed against the cup. bottom.
- the crossbar 3 is a solid rod body, and the pedal 2 is provided with a connecting hole 21 for positioning the crossbar 3.
- the outer surfaces of the inner and outer side walls of the leg tube 1 are respectively recessed inward along the longitudinal direction of the hollow tubular body to form a long recess 13 , and the pedal 2 is correspondingly mounted in the recess 13 by the end edge of the pedal 2
- the draw 13 of the leg tube forms a phase card which facilitates the installation of the pedal and prevents the pedal from flipping.
- the pedal 2 on the crossbar 3 can be mounted and fixed in the recess 13 of the two leg tubes 1 by screwing the nuts 51 on both sides.
- connection structure of the leg tube and the pedal The connection structure of the leg tube and the pedal, the pedaling force received on the pedal 2, that is, the shearing force is applied to the leg tube 1 through the crossbar 3, and the end of the crossbar 3 is placed on the second hole 12, the crossbar 3
- the pedaling force is applied to the inner side wall of the leg tube 1 through the second hole 12, and at the same time, the end of the cross rod 3 is locked in the metal cup 4 by the nut 51, and the pedaling force of the cross rod 3 also passes through the metal.
- the conduction of the cup 4 is applied to the outer side wall of the leg tube 1 through the first hole 11, such that both side walls of the leg tube 1 form a support for the cross bar 3, which enhances the cross bar 3 due to the dispersion of the pedaling force Connection strength.
- Embodiment 2 as shown in FIG. 4, a connection structure of a ladder leg tube and a pedal according to the present invention, the screwing portion of the end of the crossbar 3 is an externally threaded structure 31, which is different from the first embodiment in that
- the nut is a nut 52, and the screwing portion of the nut 52 is sequentially passed through the through hole of the metal cup, and the second hole 12 of the inner side wall of the leg tube is screwed to the external thread structure 31 of the end of the cross bar 3, and the cap of the nut 52 is fixed. The head is pressed against the bottom of the cup.
- connection structure of the leg tube and the pedal the pedaling force received on the pedal 2, that is, the shearing force is applied to the nut 52 through the crossbar 3, since the screwing portion of the nut 52 is placed on the second hole 12, Stepping on the crossbar 3
- the force is applied to the inner side wall of the leg tube 1 through the second hole 12, and at the same time, the nut 52 is screwed to the end of the cross bar 3 through the metal cup 4, so that the pedaling force of the cross bar 3 also passes through the metal.
- the conduction of the cup 4 is applied to the outer side wall of the leg tube 1 through the first hole 11, such that both side walls of the leg tube 1 form a support for the cross bar 3, which enhances the cross bar 3 due to the dispersion of the treading force Connection strength.
- connection structure of the ladder leg tube and the pedal of the present invention is different from that of the first embodiment in that the screwing portion of the end of the crossbar 3 is along the axis of the crossbar.
- the screw hole 32 is provided, and the screw is a screw 53.
- the wire end of the screw 53 is sequentially passed through the through hole of the metal cup 4, and the second hole 12 of the inner side wall of the leg tube is screwed to the screw hole 32 at the end of the cross bar 3, The cap of the screw 53 is pressed against the bottom of the cup.
- connection structure of the leg tube and the pedal the pedaling force received on the pedal 2, that is, the shearing force is applied to the screw 53 through the crossbar 3, since the wire head of the screw 53 is placed on the second hole 12, the crossbar 3
- the pedaling force is applied to the inner side wall of the leg tube 1 through the second portion, and at the same time, the screw 53 is screwed to the end of the cross rod 3 through the metal cup 4, so that the pedaling force of the cross rod 3 is also passed.
- the conduction of the metal cup 4 is applied to the outer side wall of the leg tube 1 through the first hole 11, so that both side walls of the leg tube 1 support the cross bar 3, and the cross bar 3 is reinforced by the dispersion of the pedaling force Connection strength.
- connection structure of the ladder leg tube and the pedal of the present invention is different from that of the first embodiment in that it does not use a metal cup to push the pedaling force to the outside of the leg tube 1.
- the wall is conductive, but a cymbal 6 is used, the middle hole of the spacer 6 is opposite to the first hole 11 of the leg tube 1, and one end surface of the spacer 6 is pressed against the outside of the first hole 11 of the leg tube 1.
- the screwing portion of the end of the crossbar 3 is an externally threaded structure 31, and the screw is a nut 51.
- the nut 51 is outside the outer side wall of the leg tube 1 and sequentially passes through the second hole 12 of the inner side wall of the leg tube and the outside of the leg tube.
- the outer wall structure 31 of the first hole 11 of the wall and the end of the cross rod 3 of the middle hole of the spacer 6 is fixed by screwing, and the end surface of the nut 51 is pressed against the other end surface of the cymbal 6.
- connection structure of the leg tube and the pedal since the cross bar 3 is directly penetrated in the first hole 11 and the second hole 12 of the leg tube 1, the pedaling force received by the cross bar 3 also passes through the first hole of the leg tube 1.
- 11 and the second hole 12 directly act on the outer side wall and the inner side wall of the leg tube 1, and the nut 51 and the spacer 6 mainly serve as a locking action, so that both side walls of the leg tube 1 support the cross bar 3 due to The dispersion of the pedaling force enhances the joint strength of the crossbar 3.
- connection structure of the ladder leg tube and the pedal of the present invention is different from that of the fourth embodiment in that the screw is a nut 52, and the screwing portion of the nut 52 is sequentially worn.
- the middle hole of the spacer, the first hole 11 of the outer side wall of the leg tube 1 and the end of the cross bar 3 of the second hole 12 passing through the inner side wall of the leg tube 1 The externally threaded structure 31 is screwed and fixed, and the cap of the nut 52 is pressed against the spacer 6.
- the leg tube and the pedal are connected to each other. Since the end of the crossbar 3 is placed on the second hole 12, the pedaling force received by the crossbar 3 is applied to the inner side wall of the leg tube 1 through the second hole 12, At the same time, since the end of the crossbar 3 is fixedly screwed to the nut 52, the nut 52 is sleeved in the first hole 11 of the leg tube, so that the pedaling force received by the crossbar 3 is also transmitted through the nut 52.
- the first ? L 11 is applied to the outer side wall of the leg tube 1, so that both side walls of the leg tube 1 support the cross bar 3, and the joint strength of the cross bar 3 is enhanced due to the dispersion of the pedaling force.
- Embodiment 6 Referring to FIG. 8 , a connection structure of a ladder leg tube and a pedal of the present invention is different from that of the fourth embodiment in that the screwing portion of the end of the cross bar 3 is along the axis of the cross bar.
- the screw hole 32 is provided, and the screw is a screw 53.
- the wire of the screw 53 sequentially passes through the middle hole of the spacer 6, the first hole 11 of the outer side wall of the leg tube 1, and the second hole of the inner side wall of the leg tube 1.
- the screw hole 32 of the end of the crossbar 3 of 12 is screwed and fixed, and the cap of the screw 53 is pressed against the spacer 6.
- the leg tube and the pedal are connected to each other. Since the end of the crossbar 3 is placed on the second hole 12, the pedaling force received by the crossbar 3 is applied to the inner side wall of the leg tube 1 through the second hole 12, At the same time, since the end of the crossbar 3 is fixedly screwed to the screw 53, the screw 53 is placed in the first hole 11 of the leg tube, so that the pedaling force received by the crossbar 3 is also transmitted through the screw 53 and passes through A hole 11 is applied to the outer side wall of the leg tube 1, so that both side walls of the leg tube 1 support the cross bar 3, and the joint strength of the cross bar 3 is enhanced due to the dispersion of the pedaling force.
- the invention relates to a connection structure of a ladder leg tube and a pedal, which has the advantages of simple structure, convenient installation and use, wide application range and good industrial applicability.
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Description
一种梯子腿管与踏板的连接结构 技术领域
本发明属于日常生活用品领域， 特别是涉及一种梯子腿管与踏板的连接结 构。
背景技术
梯子是一种主要用于登髙取放物品的工具， 被广泛地使用在各种不同的场 合，特别是可伸缩的梯子， 由于其高度可调节， 更是受到人们的青睐。梯子通常 包括腿杆和踏板，腿杆至少有二根，一般是采用长条状中空管形体， 因而也称腿 管， 如果是人字梯， 则腿管通常需要四根， 当梯子为可伸缩的梯子时， 则腿管为 可伸缩的结构；踏板通常有许多根，数量的多少主要取决于梯子的高度，或者说 取决于腿管的长度，腿管越长需要的踏板数量也越多，踏板一般是呈水平方向连 接在二根呈竖向的腿管之间，现有技术的一种梯子腿管与踏板的连接结构是采用 螺钉穿过腿管与踏板旋接相固定的方式，此时，踏板是连接在两腿管的内侧壁之 间，这种方式，螺钉在腿管与踏板的相接处需要承受较大的剪切力， 因而影响了 腿管与踏板的连接强度，而且踏板也不便于安装；另一种梯子腿管与踏板的连接 结构是采用螺钉穿过踏板与腿管旋接相固定的方式，此时，踏板是连接在两腿管 的前侧壁之间，这种方式，螺钉在腿管与踏板的相接处同样需要承受较大的剪切 力，因而也影响了腿管与踏板的连接强度；再一种梯子腿管与踏板的连接结构是 在腿管上预先设有孔， 然后将踏板的端部从腿管穿出而铆接在腿管的外侧壁上， 这种铆接方式，由于为了实现踏板能与腿管相铆接，制作踏板的材料就不能太硬， 否则就无法铆接，而在硬度不够的情况下又要保证连接强度，此时就必须增大踏 板与腿管之间的接触面积，这样就需要使踏板的型材截面进一步增大，使制作踏 板的材料进一步增多， 因此， 容易造成成本的升高。
发明内容
本发明的目的在于克服现有技术之不足，提供一种梯子腿管与踏板的连接结 构，既可以增强踏板与腿管的连接强度，又可以减少踏板材料的使用量进而降低 制作成本， 同时还可减轻踏板与腿管连接过程中操作工人的劳动强度。
本发明解决其技术问题所采用的技术方案是:一种梯子腿管与踏板的连接结
确认本
构， 包括：
设在由中空金属管形体构成的腿管的外侧壁上的第一孔和相对的内侧壁上 的第二孔；
沿踏板长度方向而设的横杆，横杆的端头设有旋接部，旋接部靠近或穿过腿 管的第二孔；
金属杯，杯底设有通孔，杯沿设有边唇；杯体由腿管外侧壁的第一孔套入腿 管腔内，杯底的通孔与腿管内侧壁的第二孔相对，杯沿的边唇贴靠在腿管外侧壁 的第一孔的孔沿处；
旋固件，旋固件在杯体内或穿过杯底的通孔及腿管内侧壁的第二孔与横杆的 端头旋接相固定。
所述踏板的横杆为实心的杆体， 踏板上对应设有用于定位横杆的连接孔。 所述横杆端头的旋接部为外螺紋结构，旋固件为螺母，螺母在杯体内与依次 穿过腿管内侧壁第二孔、金属杯通孔的横杆端头的外螺纹结构旋接相固定，螺母 的端面贴压于杯底。
所述横杆端头的旋接部为外螺紋结构，旋固件为螺帽，螺帽的旋接部依次穿 过金属杯通孔、腿管内侧壁第二孔与横杆端头的外螺纹结构旋接相固定，螺帽的 帽头贴压于杯底。
所述横杆端头的旋接部为沿横杆的轴线方向而设的螺孔，旋固件为螺丝，螺 丝的丝头依次穿过金属杯通孔、 腿管内侧壁第二孔与横杆端头的螺孔旋接相固 定， 螺丝的帽头贴压于杯底。
另一种方案的梯子腿管与踏板的连接结构， 包括：
设于由中空金属管形体构成的腿管的外侧壁上的第一孔和相对的内侧壁上 的第二孔；
沿踏板长度方向而设的横杆，横杆的端头设有旋接部，横杆端头的旋接部穿 过腿管的第二孔， 并靠近或穿过腿管的第一孔；
垫片，垫片中孔与 1管的第一孔相对，垫片的端面贴压在腿管的第一孔的外 侧壁上；
旋固件，旋固件在腿管的外侧壁外或穿过垫片的中孔及腿管的外侧壁的第一 孔与横杆的端头旋接相固定。
所述踏板的横杆为实心的杆体， 踏板上对应设有用于定位横杆的连接孔。 所述横杆端头的旋接部为外螺纹结构，旋固件为螺母，螺母在腿管的外侧壁 外与依次穿过腿管内侧壁第二孔、腿管外侧壁第一孔、垫片的中孔的横杆端头的 外螺纹结构旋接相固定， 螺母的端面贴压于垫片。
所述横杆端头的旋接部为外螺纹结构，旋固件为螺帽，螺帽的旋接部依次穿 过垫片的中孔、腿管外侧壁的第一孔与穿过腿管内侧壁的第二孔的横杆端头的外 螺纹结构旋接相固定， 螺帽的帽头贴压于垫片。
所述横杆端头的旋接部为沿横杆的轴线方向而设的螺孔，旋固件为螺丝，螺 丝的丝头依次穿过垫片的中孔、腿管外侧壁的第一孔与穿过腿管内侧壁的第二孔 的横杆端头的螺孔旋接相固定， 螺丝的帽头贴压于垫片。
本发明的梯子腿管与踏板的连接结构，适用于普通的梯子， 即， 由两根腿管 和若干踏板构成的梯子； 也适用于人字梯， 即， 由四根腿管和若干踏板构成的梯 子； 还适用于可伸缩的梯子， 即腿管为可伸缩的结构， 此时， 腿管一般分设为相 并列的前腿管和后腿管，前腿管的管壁一体向后延伸设有弯折的扣钩片，后腿管 的管壁一体向前延伸设有可对应配合的弯折的扣钩片，前腿管与后腿管之间通过 各自的扣钩片沿轴向相互套入构成可沿轴向相互滑动而沿径向相互定位的可伸 缩的腿管结构，这样，前腿管与后腿管呈并列状，可分别与各自对应的踏板的横 杆的端头旋接相固定。
本发明的梯子腿管与踏板的连接结构，在腿管的内、外侧壁的外表面分别沿 中空管形体的长度方向向内凹入构成长条凹道，踏板则对应装在凹道内， 由踏板 的端缘与腿管的凹道形成相卡作用，这样既便于踏板的安装，又可以防止踏板的 翻转。
本发明的有益效果是，由于采用了在腿管的外侧壁和内侧壁上分别设有第一 孔和相对的第二孔，在踏板中设有实心杆体的横杆，横杆的端头设有外螺纹结构 或螺孔结构的旋接部，通过旋固件、金属杯或垫片以及腿管第一孔、第二孔的配 合，可以将横杆旋接固定在二根腿管之间，并进而使横杆上的踏板被安装在二根 腿管之间，这种梯子腿管与踏板之间的连接方式，既可以增强踏板与腿管的连接 强度，又可以减少踏板材料的使用量进而降低制作成本，同时还可减轻踏板与腿 管连接过程中操作工人的劳动强度，特别是采用了一独立的杆件即横杆与腿管的
连接来进而实现踏板与腿管之间的连接， 极大地方便了踏板与腿管之间的相连 接， 同时也十分便于梯子零部件的加工制作。
附图说明
以下结合附图及实施例对本发明作进一步详细说明；但本发明的一种梯子腿 管与踏板的连接结构不局限于实施例。
图 1是实施例一本发明的截面构造示意图；
图 2是实施例一本发明腿管的截面示意图；
图 3是实施例一本发明踏板的截面示意图；
图 4是实施例二本发明的截面构造示意图；
图 5是实施例三本发明的截面构造示意图；
图 6是实施例四本发明的截面构造示意图；
图 7是实施例五本发明的截面构造示意图；
图 8是实施例六本发明的截面构造示意图。
具体实施方式
实施例一,参见图 1至图 3所示，本发明的一种梯子腿管与踏板的连接结构， 是使用在可伸缩的梯子上，当然也可以使用在由两根腿管和若干踏板构成的普通 梯子， 或是由四根腿管和若干踏板构成的人字梯； 而这种可伸缩的梯子， 一般采 用前腿管 1、 后腿管 9结构， 前腿管 1的管壁一体向后延伸设有弯折的扣钩片， 后腿管 9的管壁一体向前延伸设有可对应配合的弯折的扣钩片，前腿管 1与后腿 管 9之间通过各自的扣钩片沿轴向相互套入构成可沿轴向相互滑动而沿径向相 互定位的可伸缩的腿管结构，这样，前腿管 1与后腿管 9呈并列状，可分别与各 自对应的踏板的横杆的端头旋接相固定， 两前腿管 1之间联接踏板 2, 两后腿管 9之间联接踏板 8。
下面， 以前腿管 1 (下简称腿管）与踏板 2之间的连接为例来说明梯子腿管 与踏板的连接结构， 后腿管 9与踏板 8之间的连接相类同。
本发明的梯子腿管与踏板的连接结构包括 - 设在由中空金属管形体构成的腿管 1的外侧壁上的第一? L 11和相对的内侧 壁上的第二孔 12:
沿踏板 2长度方向而设的横杆 3, 横杆 3的端头设有旋接部， 旋接部为外螺
纹结构 31;
金属杯 4， 杯底设有通孔，杯沿设有边唇 41 ; 杯体由腿管 1外侧壁的第一孔 11套入腿管腔内， 杯底的通孔与腿管内侧壁的第二孔 12相对， 杯沿的边唇 41 贴靠在腿管外侧壁的第一孔 11的孔沿处；
旋固件， 旋固件为螺母 51;
螺母 51在杯体 4内与依次穿过腿管 1内侧壁第二孔 12、金属杯 4通孔的横 杆 3端头的外螺紋结构 31旋接相固定， 螺母 51的端面贴压于杯底。
其中， 横杆 3为实心的杆体， 踏板 2上对应设有用于定位横杆 3的连接孔 21。在腿管 1的内、外侧壁的外表面分别沿中空管形体的长度方向向内凹入构成 长条凹道 13， 踏板 2则对应装在凹道 13内， 由踏板 2的端缘与腿管的凹道 13 形成相卡作用，这样既便于踏板的安装，又可以防止踏板的翻转。在这种腿管与 踏板的连接结构中， 通过将两边的螺母 51旋紧， 可以使横杆 3上的踏板 2被安 装固定在两根腿管 1的凹道 13之中。
这种腿管与踏板的连接结构，踏板 2上所受到的踩踏力即剪切力通过横杆 3 施加在腿管 1上， 横杆 3的端部搭在第二孔 12上， 横杆 3的踩踏力即通过第二 孔 12施加在腿管 1的内侧壁上， 同时，横杆 3的端头又通过螺母 51锁固在金属 杯 4内， 则横杆 3的踩踏力同时也通过金属杯 4的传导并通过第一孔 11施加在 腿管 1的外侧壁上，这样，腿管 1的两侧壁都对横杆 3形成支撑， 由于踩踏力的 分散， 从而增强了横杆 3的连接强度。
由于踏板与腿管之间的连接强度得以提高， 因此，可以减少踏板材料的使用 量进而降低制作成本，
由于腿管与踏板之间的连接是采用旋接方式， 因此， 可以极大地减轻腿管 1 与踏板 2之间相连接时操作工人的劳动强度。
实施例二，参见图 4所示，本发明的一种梯子腿管与踏板的连接结构，横杆 3端头的旋接部为外螺紋结构 31， 与实施例一的不同之处在于， 旋固件为螺帽 52， 螺帽 52的旋接部依次穿过金属杯 通孔、 腿管内侧壁第二孔 12与横杆 3 端头的外螺纹结构 31旋接相固定， 螺帽 52的帽头贴压于杯底。
这种腿管与踏板的连接结构，踏板 2上所受到的踩踏力即剪切力通过横杆 3 施加在螺帽 52上， 由于螺帽 52的旋接部搭在第二孔 12上， 因此横杆 3的踩踏
力即通过第二孔 12施加在腿管 1的内侧壁上， 同时， 螺帽 52又通过金属杯 4 与横杆 3的端头相旋固，因此，横杆 3的踩踏力同时也通过金属杯 4的传导并通 过第一孔 11施加在腿管 1的外侧壁上， 这样， 腿管 1的两侧壁都对横杆 3形成 支撑， 由于踩踏力的分散， 从而增强了横杆 3的连接强度。
实施例三，参见图 5所示， 本发明的一种梯子腿管与踏板的连接结构， 与实 施例一的不同之处在于， 横杆 3端头的旋接部为沿横杆的轴线方向而设的螺孔 32, 旋固件为螺丝 53, 螺丝 53的丝头依次穿过金属杯 4通孔、 腿管内侧壁第二 孔 12与横杆 3端头的螺孔 32旋接相固定， 螺丝 53的帽头贴压于杯底。
这种腿管与踏板的连接结构，踏板 2上所受到的踩踏力即剪切力通过横杆 3 施加在螺丝 53上， 由于螺丝 53的丝头搭在第二孔 12上， 因此横杆 3的踩踏力 即通过第二 ¾ 12施加在腿管 1的内侧壁上， 同时，螺丝 53又通过金属杯 4与横 杆 3的端头相旋固，因此，横杆 3的踩踏力同时也通过金属杯 4的传导并通过第 —孔 11施加在腿管 1的外侧壁上，这样，腿管 1的两侧壁都对横杆 3形成支撑, 由于踩踏力的分散， 从而增强了横杆 3的连接强度。
实施例四，参见图 6所示，本发明的一种梯子腿管与踏板的连接结构， 与实 施例一的不同之处在于， 它没有釆用金属杯来将踩踏力向腿管 1的外侧壁传导， 而是釆用了一塾片 6， 垫片 6的中孔与腿管 1的第一孔 11相对， 垫片 6的一侧 端面贴压在腿管 1的第一孔 11的外侧壁上， 横杆 3端头的旋接部为外螺纹结构 31, 旋固件为螺母 51， 螺母 51在腿管 1的外侧壁外与依次穿过腿管内侧壁第二 孔 12、腿管外侧壁第一孔 11、垫片 6的中孔的横杆 3端头的外螺紋结构 31旋接 相固定， 螺母 51的端面贴压在塾片 6的另一端面上。
这种腿管与踏板的连接结构， 由于横杆 3直接穿接在腿管 1的第一孔 11和 第二孔 12中， 因此横杆 3所受到的踩踏力也通过腿管 1的第一孔 11和第二孔 12直接作用在腿管 1的外侧壁和内侧壁上， 螺母 51和垫片 6主要起锁紧作用， 这样，腿管 1的两侧壁都对横杆 3形成支撑， 由于踩踏力的分散，从而增强了横 杆 3的连接强度。
实施例五，参见图 7所示，本发明的一种梯子腿管与踏板的连接结构， 与实 施例四的不同之处在于， 旋固件为螺帽 52， 螺帽 52的旋接部依次穿过垫片的中 孔、腿管 1外侧壁的第一孔 11与穿过腿管 1内侧壁的第二孔 12的横杆 3端头的
外螺紋结构 31旋接相固定， 螺帽 52的帽头贴压于垫片 6。
这种腿管与踏板的连接结构， 由于横杆 3的端部搭在第二孔 12上， 因而横 杆 3所受到的踩踏力即通过第二孔 12施加在腿管 1的内侧壁上， 同时， 由于横 杆 3的端头又与螺帽 52旋接相固定， 螺帽 52套在腿管的第一孔 11中， 因而横 杆 3所受到的踩踏力同时也通过螺帽 52的传导通过第一? L 11施加在腿管 1的外 侧壁上，这样， 腿管 1的两侧壁都对横杆 3形成支撑， 由于踩踏力的分散， 从而 增强了横杆 3的连接强度。
实施例六， 参见图 8所示，本发明的一种梯子腿管与踏板的连接结构， 与实 施例四的不同之处在于， 横杆 3端头的旋接部为沿横杆的轴线方向而设的螺孔 32， 旋固件为螺丝 53, 螺丝 53的丝头依次穿过垫片 6的中孔、腿管 1外侧壁的 第一孔 11与穿过腿管 1内侧壁的第二孔 12的横杆 3端头的螺孔 32旋接相固定, 螺丝 53的帽头贴压于垫片 6。
这种腿管与踏板的连接结构， 由于横杆 3的端部搭在第二孔 12上， 因而横 杆 3所受到的踩踏力即通过第二孔 12施加在腿管 1的内侧壁上， 同时， 由于横 杆 3的端头又与螺丝 53旋接相固定， 螺丝 53搭在腿管的第一孔 11中， 因而横 杆 3所受到的踩踏力同时也通过螺丝 53的传导并通过第一孔 11施加在腿管 1 的外侧壁上， 这样， 腿管 1的两侧壁都对横杆 3形成支撑， 由于踩踏力的分散， 从而增强了横杆 3的连接强度。
上述实施例仅用来进一步说明本发明的梯子腿管与踏板的连接结构，但本发 明并不局限于实施例，凡是依据本发明的技术实质对以上实施例所作的任何简单 修改、 等同变化与修饰， 均落入本发明技术方案的保护范围内。
工业实用性
本发明一种梯子腿管与踏板的连接结构，其结构简单， 安装使用方便，适用 范围广， 具有良好的工业实用性。
Claims
1. 一种梯子腿管与踏板的连接结构， 其特征在于： 包括- 设在由中空金属管形体构成的腿管的外侧壁上的第一孔和相对的内侧壁上 的第二孔；
沿踏板长度方向而设的横杆，横杆的端头设有旋接部，旋接部靠近或穿过腿 管的第二孔；
垫片，垫片中孔与腿管的第一孔相对，垫片的端面贴压在腿管的第一孔的外 侧壁上；
旋固件， 与横杆的端头旋接相固定。
2. 根据权利要求 1所述的一种梯子腿管与踏板的连接结构， 其特征在于： 所述垫片为一金属杯状结构，杯底设有通孔，杯沿设有边唇； 杯体由腿管外侧壁 的第一孔套入腿管腔内，杯底的通孔与腿管内侧壁的第二孔相对，杯沿的边唇贴 靠在腿管外侧壁的第一孔的孔沿处；
旋固件，旋固件在杯体内或穿过杯底的通孔及腿管内侧壁的第二孔与横杆的 端头旋接相固定。
3. 根据权利要求 1所述的一种梯子腿管与踏板的连接结构， 其特征在于： 所述垫片为一片状结构，垫片中孔与腿管的第一孔相对，垫片的端面贴压在腿管 的第一孔的外侧壁上；
旋固件，旋固件在腿管的外侧壁外或穿过垫片的中孔及腿管的外侧壁的第一 孔与横杆的端头旋接相固定。
4. 根据权利要求 2或 3所述的一种梯子腿管与踏板的连接结构， 其特征在 于： 所述踏板的横杆为实心的杆体， 踏板上对应设有用于定位横杆的连接孔。
5. 根据权利要求 2所述的一种梯子腿管与踏板的连接结构， 其特征在于： 所述横杆端头的旋接部为外螺纹结构，旋固件为螺母，螺母在杯体内与依次穿过 腿管内侧壁第二孔、金属杯通孔的横杆端头的外螺紋结构旋接相固定，螺母的端 面贴压于杯底。
6. 根据权利要求 2所述的一种梯子腿管与踏板的连接结构， 其特征在于： 所述横杆端头的旋接部为外螺紋结构，旋固件为螺帽，螺帽的旋接部依次穿过金 属杯通孔、腿管内侧壁第二孔与横杆端头的外螺紋结构旋接相固定，螺帽的帽头
贴压于杯底。
7. 根据权利要求 2所述的一种梯子腿管与踏板的连接结构， 其特征在于- 所述横杆端头的旋接部为沿横杆的轴线方向而设的螺孔，旋固件为螺丝，螺丝的 丝头依次穿过金属杯通孔、腿管内侧壁第二孔与横杆端头的螺孔旋接相固定，螺 丝的帽头贴压于杯底。
8. 根据权利要求 3所述的一种梯子腿管与踏板的连接结构， 其特征在于： 所述横杆端头的旋接部为外螺纹结构，旋固件为螺母，螺母在腿管的外侧壁外与 依次穿过腿管内侧壁第二孔、腿管外侧壁第一孔、垫片的中孔的横杆端头的外螺 纹结构旋接相固定， 螺母的端面贴压于垫片。
9. 根据权利要求 3所述的一种梯子腿管与踏板的连接结构， 其特征在于： 所述横杆端头的旋接部为外螺紋结构，旋固件为螺帽，螺帽的旋接部依次穿过垫 片的中孔、腿管外侧壁的第一孔与穿过腿管内侧壁的第二孔的横杆端头的外螺紋 结构旋接相固定， 螺帽的帽头贴压于垫片。
10. 根据权利要求 3所述的一种梯子腿管与踏板的连接结构， 其特征在于： 所述横杆端头的旋接部为沿横杆的轴线方向而设的螺孔，旋固件为螺丝，螺丝的 丝头依次穿过垫片的中孔、腿管外侧壁的第一孔与穿过腿管内侧壁的第二孔的横 杆端头的螺孔旋接相固定， 螺丝的帽头贴压于垫片。
11. 根据权利要求 1所述的一种梯子腿管与踏板的连接结构， 其特征在于： 所述的腿管包括相并列的前腿和后腿，前腿、后腿均为金属材料一体成型制作而 成的长条状中空管形体，前腿的管壁一体向后延伸设有弯折的扣钩片，后腿的管 壁一体向前延伸设有可对应配合的弯折的扣钩片，前腿与后腿之间通过各自的扣 钩片沿轴向相互套入构成可沿轴向相互滑动而沿径向相互定位的腿管结构。
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200620086231XU CN201013224Y (zh) | 2006-06-20 | 2006-06-20 | 一种梯子腿管与踏板的连接结构 |
| CN200620086231.X | 2006-06-20 |
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| Publication Number | Publication Date |
|---|---|
| WO2008000162A1 true WO2008000162A1 (fr) | 2008-01-03 |
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ID=38845121
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/CN2007/001945 WO2008000162A1 (fr) | 2006-06-20 | 2007-06-20 | Structure d'assemblage d'un montant et d'un échelon d'une échelle |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN201013224Y (zh) |
| WO (1) | WO2008000162A1 (zh) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1457149A (en) * | 1973-12-19 | 1976-12-01 | Gravity Aluminium Pty Ltd | Ladder |
| GB1570200A (en) * | 1976-01-27 | 1980-06-25 | Richomme Echelles | Ladders |
| GB2355481A (en) * | 1999-10-08 | 2001-04-25 | David Atkinson | Ladder extending device |
| CN2701667Y (zh) * | 2004-03-12 | 2005-05-25 | 田镇平 | 轮圈幅条端子定位结构 |
-
2006
- 2006-06-20 CN CNU200620086231XU patent/CN201013224Y/zh not_active Expired - Lifetime
-
2007
- 2007-06-20 WO PCT/CN2007/001945 patent/WO2008000162A1/zh active Application Filing
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1457149A (en) * | 1973-12-19 | 1976-12-01 | Gravity Aluminium Pty Ltd | Ladder |
| GB1570200A (en) * | 1976-01-27 | 1980-06-25 | Richomme Echelles | Ladders |
| GB2355481A (en) * | 1999-10-08 | 2001-04-25 | David Atkinson | Ladder extending device |
| CN2701667Y (zh) * | 2004-03-12 | 2005-05-25 | 田镇平 | 轮圈幅条端子定位结构 |
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| CN201013224Y (zh) | 2008-01-30 |
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