CN201250604Y - Latch hook unit for ladder - Google Patents
Latch hook unit for ladder Download PDFInfo
- Publication number
- CN201250604Y CN201250604Y CNU2008201419614U CN200820141961U CN201250604Y CN 201250604 Y CN201250604 Y CN 201250604Y CN U2008201419614 U CNU2008201419614 U CN U2008201419614U CN 200820141961 U CN200820141961 U CN 200820141961U CN 201250604 Y CN201250604 Y CN 201250604Y
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- CN
- China
- Prior art keywords
- ladder
- hook body
- terraced
- lateral wall
- hook
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Abstract
A latch hook unit for ladder belongs to the field of ladder accessories, in particular to a latch hook device for joining a main ladder and a sub-ladder of an extension type ladder, which comprises a latch hook body combined with the main ladder, wherein the latch hook body is formed by a mounting portion fixed with a ladder frame and a latch hook body portion which extends to one side of the sub-ladder, and the mounting portion is provided with a mounting surface which can be suitably assembled with the main ladder, a locking arm can be installed on the latch hook body portion in a way of stretching to the upper portion of a ladder pedaling rod and locking the ladder pedaling rod, and a reinforcing draw bar is installed by means of the assembly end of the latch hook body portion. The arrangement of the latch hook body has simple structure, and is more convenient for hooking the sub-ladder and installing. And the reinforcing draw bar which is provided further provides safety for the latch hook body.
Description
Technical field
The utility model belongs to the ladder field of accessories, relates in particular to the main ladder and the secondary terraced hooking device that closes up mutually of extended type ladder.
Background technology
Known technology, as 200620152226.4 1 kinds of folding H of disclosed Chinese patent type list ladder, relate to H type list ladder folded and be the structure of small size more, it comprises terraced frame and the terraced riding club that is parallel to each other, wherein, all become the connection of connecting rod interlock structure between ladder frame and each terraced riding club by pivot, the ladder frame has the terraced riding club of appearance and contains the conduit that crouches wherein, this ladder frame and terraced riding club junction have the terraced frame pivot dress hole of assembling terraced riding club by pivot, and terraced riding club two ends at different levels and terraced frame junction are all mated ladder rod self-pedaling pivot assembling hole is set.
The drop hook composite set of 02263038.4 1 kinds of vertical ladders of and for example disclosed Chinese patent, comprise the drop hook combination and be connected buckle, described drop hook combination is made up of hook seat, torsion spring, hook plate, rivet, promptly is at described hook seat interlayer and settles torsion spring and hook plate, connects by rivet; One end of described connection buckle is a flange, and other end riveting is connected on the pillar, connect on the branch buckle with under be connected buckle; During use, the drop hook aggregate erection at the upper ladder pillar medial surface, is connected buckle and in position goes up connection upper ladder pillar and descending stair pillar, upper ladder pillar is adjusted arbitrary height, press down upper ladder pillar, the pedal overlap joint of hook plate and lower end pillar is fixing.
The secondary ladder that known technology can better not solve the extended type ladder hooks together problem with main terraced safety of closing up mutually, particularly simple structure, cheap for manufacturing cost, safe and reliable hook together the device expectation of industry especially.
Summary of the invention
Problem to be solved in the utility model is to overcome the defective that aforementioned techniques exists, and a kind of simple in structure, cheap for manufacturing cost, safe and reliable hook unit that is used for ladder is provided, and is specially adapted to the extended type ladder.
The utility model is realized by following technical scheme: a kind of hook unit that is used for ladder comprises and the main terraced hook body that combines that it is characterized in that: described hook body is by constituting with terraced frame installation portion that installs and the hook body segment of stretching to a secondary terraced side; Described installation portion have can with the coincide installed surface of assembling of main ladder frame; Lockup arm becomes the mode can direct reach terraced riding club top and to lock terraced riding club to be installed in hook body segment; Reinforced pull rod is installed by the assembling end of hook body segment.
The utility model can also further be realized by following technical scheme:
The aforementioned hook unit that is used for ladder, wherein: the hook body segment of described hook body has the storage tank of the terraced riding club on the terraced frame of ccontaining pair, and storage tank one side is the open end, and opposite side extends upward the assembling end of formation along notch.
The aforementioned hook unit that is used for ladder, wherein: described lockup arm becomes the mode that can freely swing to be journaled into the lockup arm installation portion of this assembling end by connector, and the lockup arm installation portion is arranged on when directing reach terraced riding club top vertically the time under the lockup arm freedom and locking the position of terraced riding club.
The aforementioned hook unit that is used for ladder, wherein: described reinforced pull rod adds by the lateral wall rod section with in abutting connection with the transition reinforced pull rod of this lateral wall rod section and along transition to be haled the pull bar installation portion that rollover forms and constitutes.
The aforementioned hook unit that is used for ladder, wherein: the installation portion of described hook body is by the lateral wall installing plate and strengthen side board in abutting connection with the transition of this lateral wall installing plate and constitute, and this lateral wall installing plate is strengthened the common formation of side board two installed surfaces that enclose with transition.
The aforementioned hook unit that is used for ladder, wherein: the width of the lateral wall installing plate of described hook body installation portion is equal to or slightly less than main ladder frame lateral wall width, and the height of lateral wall installing plate is more than or equal to the width of 1/2 lateral wall installing plate or smaller or equal to the width of 1/2 lateral wall installing plate; The width that side board is strengthened in this transition equals or is slightly larger than main ladder frame thickness.
The aforementioned hook unit that is used for ladder, wherein: the storage tank degree of depth of the hook body segment of described hook body should be greater than terraced riding club maximum gauge, and the setting of the open end of storage tank is convenient to terraced riding club and is entered round mouth; Described lockup arm is set to be inverted fan-shaped or triangular structure.
The aforementioned hook unit that is used for ladder, wherein: described hook body, reinforced pull rod, lockup arm are respectively by the compression moulding of sheet material one; The reinforced pull rod width is less than the storage tank width; The hook body segment of described hook body has reinforcing rib; The height that side board is strengthened in described transition is the same with the width of described lateral wall installing plate.
The aforementioned hook unit that is used for ladder, wherein: the peripheral one of described hook body suppresses flange; Lockup arm installation portion part in abutting connection with the hook body can be provided with the gap that the appearance lockup arm is is freely come in and gone out.
The aforementioned hook unit that is used for ladder, wherein: the peripheral one of described hook body suppresses continuous flange; The setting of described lockup arm installation portion meets the pad of flange height.
Advantage of the present utility model and good effect be by above technical scheme as can be known:
The utility model is used for the hook unit of ladder, and this case is used for the reasonable structure of the hook unit of ladder by hook body storage tank and lockup arm, can tightly " hold " the terraced riding club of secondary ladder, thereby make more reliable, the safety of lengthened ladder, and use more easy.Being provided with of hook body segment is simple in structure, is more convenient for hooking the secondary ladder of drawing close and is convenient to installation; The hook body that is set to of reinforced pull rod provides further safety; The structure of this case hook body designs effective simplified manufacturing technique, reduces manufacturing cost, and makes material consumption littler; And more convenient batch assembling.The utility model is simple in structure, and the industry that is more suitable for is used.
For further understanding technology contents of the present utility model, characteristics and effect, exemplify following preferred embodiment now, and conjunction with figs. is described in detail as follows:
Description of drawings
Fig. 1 is the utility model overall structure schematic diagram;
Fig. 2 is the utility model decomposition texture schematic diagram;
Fig. 2 a is the another example structure schematic diagram of hook body in the utility model;
Fig. 3 is the schematic diagram that is installed on the terraced body of the present utility model;
Fig. 3 a is the local structure for amplifying schematic diagram in hook unit that is used for ladder among Fig. 3;
Fig. 3 b is the hook cell position schematic diagram that is used for ladder when terraced body draws in.
The specific embodiment
Below in conjunction with preferred embodiment, the specific embodiment, feature and effect thereof that foundation the utility model is provided, describe in detail as after; For simple and purpose clearly, hereinafter appropriate omission the description of known technology, in order to avoid those unnecessary details influences are to the description of the technical program.
As Figure 1-3, a kind of hook unit that is used for ladder comprises and the main terraced hook body 2 that combines that wherein, described hook body is made of installation portion 21 that combines with main ladder frame 4 and the hook body segment 22 of stretching to a secondary terraced side; The installation portion 21 of described hook body have can with the coincide installed surface 210 of assembling of main ladder frame, what represent as Fig. 1 is the installed surface of installation portion and the situation that the main ladder frame inner peripheral surface matches, but be not limited to this, the installed surface of hook body installation portion also can become the structure that matches and install with the main ladder frame outer fringe surface; The securing member 211 of two Distribution and localization is firmly installed hook body and main ladder frame by the installed surface of this installation portion, more firm, the safety that are fitted to each other of hook body and main ladder frame thus, and effective simplified manufacturing technique;
The hook body segment 22 of described hook body has storage tank 220, and this storage tank is responsible for the terraced riding club 51 on the terraced frame 5 of ccontaining pair, and storage tank one side is open end 2201, and opposite side extends upward the assembling end 2202 of formation along notch;
Described hook body segment installation portion 21 is by lateral wall installing plate 2101 and strengthen side board 2102 in abutting connection with the transition of this lateral wall installing plate and constitute, the common formation of side board two installed surfaces that enclose 210 are strengthened in this lateral wall installing plate and transition, and this installed surface matches with terraced frame inner edge or outer fringe surface or is laminated with mutually; This structure both can make hook body segment combine with main ladder frame firmly, can make hook body segment stretch to secondary terraced frame again and obtain effective intensity support;
The width b that the width b of described lateral wall installing plate 2101 meets main ladder frame lateral wall width b ', particularly lateral wall installing plate is equal to or slightly less than main ladder frame lateral wall width b ', is fit to the situation that installation portion and terraced frame inner peripheral surface match; The height h of lateral wall installing plate is more than or equal to the width b of 1/2 lateral wall installing plate or smaller or equal to the width b of 1/2 lateral wall installing plate; The height of transition reinforcement side board can be the same with the height of lateral wall installing plate; Structure thus, the promptly safe and reliable material of saving again, also effective simplified manufacturing technique; The width a that side board is strengthened in transition meets main ladder frame thickness a ', and particularly the transition width a that strengthens side board equals or is slightly larger than main ladder frame thickness a ';
When any cross section of terraced frame section when enclosed shape such as cross section are not door font section bar or U font section bar, reinforced pull rod 1 and hook body segment installation portion 21 are fit to be installed in the terraced frame; When any cross section of terraced frame section is enclosed shape such as cross section when being square shape section bar or O font section bar, reinforced pull rod 1 and hook body segment installation portion 21 are fit to be installed on terraced frame outer rim;
The degree of depth of described hook body segment storage tank 220 should be greater than terraced riding club maximum gauge, and storage tank one side is open end 2201, and the open end setting is convenient to terraced riding club and is entered round mouth;
The mode that lockup arm 3 becomes can freely swing by connector is journaled on the lockup arm installation portion 22021 of this assembling end, the lockup arm installation portion is arranged on when directing reach terraced riding club top when vertical under the lockup arm freedom and locking the position of terraced riding club, deviates from notch to limit terraced riding club;
The hook body segment of hook body has parallel each other reinforcing rib 221, and this reinforcing rib can be the projection horizontal bar that one is pressed into.
The peripheral one of hook body suppresses flange 223, plays the effect of strengthening hook body intensity; Lockup arm installation portion part in abutting connection with the hook body can be provided with the gap 224 that the appearance lockup arm is is freely come in and gone out;
Another measure is that the peripheral one of hook body suppresses continuous flange referring to Fig. 2 a, and gap is not set, and meets the pad 31 of flange height in the setting of lockup arm installation portion, so that lockup arm can be swung freely; Be more suitable for being the embodiment of hook body thus of thin sheet material,
Reinforced pull rod 1 is installed on the main ladder frame by the pull bar installation portion 22022 of the assembling end of hook body segment so that the hook body from top to bottom integral body firmly be combined on the main ladder frame;
Reinforced pull rod 1 adds by lateral wall rod section 1101 with in abutting connection with the transition reinforced pull rod 1102 of this lateral wall rod section and along transition to be haled the pull bar installation portion 1103 that rollover forms and constitutes, the common formation of this lateral wall rod section and transition reinforced pull rod two reinforced pull rods that enclose, this reinforced pull rod is laminated with mutually with terraced frame inner peripheral surface or matches; Structure thus, the promptly safe and reliable material of saving again, also effective simplified manufacturing technique;
Lockup arm is set to be inverted fan-shaped or similar triangular structure, heavily goes up light structure to form down, is beneficial under the lockup arm freedom to replace terraced riding club when vertical, effectively limits terraced riding club, avoids notch;
Hook body, reinforced pull rod, lockup arm all can be by the compression mouldings of sheet material one, and the reinforced pull rod width is less than the storage tank width, and manufacturing process is more simplified thus, makes material obtain the most effective utilization, can effectively reduce manufacturing cost;
This case is suitable for and includes but not limited to: the situation that the multipurpose ladder of A font both sides ladder and lengthened ladder combination or lengthened ladder or other adjacent terraced bodies also need hook together mutually.
Shown in Fig. 3 b, the described hook unit that is used for ladder is installed in the main ladder frame both sides of ladder, and two hook bodies make that by storage tank and the secondary terraced terraced riding club of lockup arm tight " holding " secondary ladder can be solid and reliable along the elongation of master's ladder.
The above, it only is preferred embodiment of the present utility model, be not that the utility model is done any pro forma restriction, every foundation technical spirit of the present utility model all still belongs in the scope of technical solutions of the utility model any simple modification, equivalent variations and modification that above embodiment did.
Claims (10)
1. a hook unit that is used for ladder comprises and the main terraced hook body that combines, and it is characterized in that: described hook body is by constituting with terraced frame installation portion that installs and the hook body segment of stretching to a secondary terraced side; Described installation portion have can with the coincide installed surface of assembling of main ladder frame; Lockup arm becomes the mode can direct reach terraced riding club top and to lock terraced riding club to be installed in hook body segment; Reinforced pull rod is installed by the assembling end of hook body segment.
2. be used for the hook unit of ladder according to claim 1, it is characterized in that: the hook body segment of described hook body has the storage tank of the terraced riding club on the terraced frame of ccontaining pair, and storage tank one side is the open end, and opposite side extends upward the assembling end of formation along notch.
3. the hook unit that is used for ladder as claimed in claim 1 or 2, it is characterized in that: described lockup arm becomes the mode that can freely swing to be journaled into the lockup arm installation portion of this assembling end by connector, and the lockup arm installation portion is arranged on when directing reach terraced riding club top vertically the time under the lockup arm freedom and locking the position of terraced riding club.
4. as being used for the hook unit of ladder as described in the claim 3, it is characterized in that: described reinforced pull rod adds by the lateral wall rod section with in abutting connection with the transition reinforced pull rod of this lateral wall rod section and along transition to be haled the pull bar installation portion that rollover forms and constitutes.
5. as being used for the hook unit of ladder as described in the claim 4, it is characterized in that: the installation portion of described hook body is by the lateral wall installing plate and strengthen side board in abutting connection with the transition of this lateral wall installing plate and constitute, and this lateral wall installing plate is strengthened the common formation of side board two installed surfaces that enclose with transition.
6. as being used for the hook unit of ladder as described in the claim 5, it is characterized in that: the width of the lateral wall installing plate of described hook body installation portion is equal to or slightly less than main ladder frame lateral wall width, and the height of lateral wall installing plate is more than or equal to the width of 1/2 lateral wall installing plate or smaller or equal to the width of 1/2 lateral wall installing plate; The width that side board is strengthened in this transition equals or is slightly larger than main ladder frame thickness.
7. as being used for the hook unit of ladder as described in the claim 6, it is characterized in that: the storage tank degree of depth of the hook body segment of described hook body should be greater than terraced riding club maximum gauge, and the open end of storage tank is provided with to be convenient to terraced riding club and to enter round mouth; Described lockup arm is set to be inverted fan-shaped or triangular structure.
8. as being used for the hook unit of ladder as described in the claim 7, it is characterized in that: described hook body, reinforced pull rod, lockup arm are respectively by the compression moulding of sheet material one; The reinforced pull rod width is less than the storage tank width; The hook body segment of described hook body has reinforcing rib; The height that side board is strengthened in described transition is the same with the width of described lateral wall installing plate.
9. as being used for the hook unit of ladder as described in the claim 8, it is characterized in that: the peripheral one of described hook body suppresses flange; Lockup arm installation portion part in abutting connection with the hook body can be provided with the gap that the appearance lockup arm is is freely come in and gone out.
10. as being used for the hook unit of ladder as described in the claim 9, it is characterized in that: the peripheral one of described hook body suppresses continuous flange; The setting of described lockup arm installation portion meets the pad of flange height.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201419614U CN201250604Y (en) | 2008-09-18 | 2008-09-18 | Latch hook unit for ladder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201419614U CN201250604Y (en) | 2008-09-18 | 2008-09-18 | Latch hook unit for ladder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201250604Y true CN201250604Y (en) | 2009-06-03 |
Family
ID=40746278
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201419614U Expired - Lifetime CN201250604Y (en) | 2008-09-18 | 2008-09-18 | Latch hook unit for ladder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201250604Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101864890A (en) * | 2010-07-01 | 2010-10-20 | 天津市金锚集团有限责任公司 | Assembling structure of ladder landing and ladder thereof |
-
2008
- 2008-09-18 CN CNU2008201419614U patent/CN201250604Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101864890A (en) * | 2010-07-01 | 2010-10-20 | 天津市金锚集团有限责任公司 | Assembling structure of ladder landing and ladder thereof |
| CN101864890B (en) * | 2010-07-01 | 2012-02-01 | 天津市金锚集团有限责任公司 | Assembling structure of ladder landing and ladder thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20090603 Effective date of abandoning: 20080918 |