TWM592470U - Fixing device capable of quickly claimping and releasing handrails of a ladder or guard rails of a work platform - Google Patents

Abstract

A fixing device capable of quickly clamping and releasing handrails of a ladder or guard rails of a work platform comprises a fixing base, a washer, a spring, a nut, a threaded rod and a cam handle; the fixing base provides a clamping cylinder and two opposite and parallel clamping plates; the washer is disposed outside the first clamping plate; the spring is disposed between the two clamping plates; the nut is disposed outside the second clamping plate; the threaded part of the threaded rod passes through the washer, the first clamping plate, the spring and the second clamping plate sequentially to engage with the nut; the cam handle provides the forked cam part and the handle part, and the forked cam part joins the connecting end of the threaded rod with a pivot assembly. When the cam handle is turned clockwise, the operation to conduct clamping and fixing job can be performed quickly; when the cam handle is turned counterclockwise, the operation to conduct releasing job can be performed quickly as well.

Description

Fixing device capable of quickly clamping and releasing ladder handrail or working platform guardrail

This work is about fixtures for ladder handrails or work platform guardrails, more specifically about fixtures that can quickly clamp and release ladder handrails or work platform guardrails.

Generally, the traditional way of fixing ladder handrails or work platform guardrails is to drill a fixed hole in the fixed end of the ladder handrails or work platform guardrails, and then insert the fixed end into the fixed seat provided on the ladder or work platform. The seat is also provided with a fixing hole that must be drilled on the fixed end of the ladder handrail or the working platform guardrail, and finally, the fixing end of the ladder handrail or the working platform guardrail is fixed to the fixed seat with screws or latches. This conventional fixing method in which the locking parts such as screws or bolts extend through the fixing holes not only has to align the fixing holes, resulting in the disadvantage of not easy assembly, but also cannot reliably fix the ladder handrail or the work platform guardrail, which is easy to produce shaking and The problem of instability is extremely unsafe for users, which is worrying. In addition, in order to facilitate the alignment of the fixing holes, it is a common phenomenon to increase the diameter of the drilled fixing holes, which further worsens the instability of the fixed ladder handrails or working platform guardrails.

In view of the above-mentioned lack of conventional fixing methods, this creation proposes a fixing device that can quickly clamp and release ladder handrails or work platform guardrails, using a clamping method combined with a fixed seat with a clamp and a cam handle to replace screws or pins and The fixing method combined with the fixing holes can not only quickly clamp the ladder handrails or working platform guardrails, but also quickly release the ladder handrails or working platform guardrails, and because there is no need to use conventional fixing holes, there is no fixing hole alignment problem. There is no problem of shaking and instability of ladder handrails or working platform guardrails.

The fixed device for quickly clamping and releasing ladder handrails or working platform guardrails in this creation includes a fixed seat, a washer, a spring, a nut, a screw and a cam handle; the fixed seat is provided with a long opening The clamps, adjacent to the clamps on both sides of the long opening, extend outward two parallel and parallel first and second clamping plates, the first and second clamping plates are respectively provided with a first through hole and a second corresponding to each other The through hole; the washer is located on the outer side of the first splint corresponding to the first through hole, the spring is located between the first and second plywood, the two ends contact the first and second plywood respectively and correspond to the first and second through holes respectively; The outer edge of the second splint corresponds to the second through hole; the screw has a threaded section and a connecting end with a connecting hole, the threaded section extends through the washer, the first through hole, the spring and the second through hole from the second splint in sequence, and Screwed with the nut; the cam handle is provided with a split cam portion and a handle portion. The split cam portion has an eccentric shaft hole corresponding to the connecting end of the screw, and the connecting end of the screw and the split cam portion can be combined by a pivot Pivot together.

In addition, the inner edge surface of the clamping cylinder in the fixing device of the invention can quickly clamp and release the ladder handrail or the guardrail of the working platform is provided with a plurality of parallel clamping strips at equal intervals extending to both ends of the clamping cylinder to improve the clamping effect .

When the fixed end of a ladder or working platform is inserted into the clip tube of the creative device that can quickly clamp and release the fixing device of the ladder handrail or the working platform guardrail, hold the cam handle to Rotate clockwise so that the split cam portion presses against the washer. This pressing force forces the first and second clamping plates to move closer to each other, thereby quickly clamping and fixing the ladder handrail or working platform guardrail. Of the fixed end.

When the handrail of the ladder or the fixed end of the working platform is to be disassembled from the clamped state, rotate the cam handle counterclockwise so that the split cam portion no longer presses the washer, and the first and second clamping plates are no longer stressed , Move in the opposite direction, at the same time, by the spring rebound force, quickly open the first and second clamping plates and loosen the clamping cylinder, so that the fixed end of the ladder handrail or working platform can be quickly pulled away from the clamping cylinder.

1‧‧‧ Fastening and releasing fixtures for ladder handrails or working platform guardrails

11‧‧‧Fixed seat

111‧‧‧Clamp

112‧‧‧Fixed hole

1111‧‧‧ Clip

1112‧‧‧The first splint

1113‧‧‧Second splint

11121‧‧‧First through hole

11131‧‧‧Second through hole

12‧‧‧screw

121‧‧‧Thread section

122‧‧‧Connector

1221‧‧‧Connecting hole

13‧‧‧Cam handle

131‧‧‧Split cam

132‧‧‧handle

1311‧‧‧Eccentric shaft hole

14‧‧‧Pivot combination

15‧‧‧washer

16‧‧‧Spring

17‧‧‧ Nut

A‧‧‧ladder

A1‧‧‧Handrail

A11‧‧‧Flange

B‧‧‧Working platform

B1‧‧‧Guardrail

B11‧‧‧Flange

Fig. 1 is a three-dimensional schematic view of the creation of a fixing device that can quickly clamp and release ladder handrails or working platform guardrails for ladder handrails.

Fig. 2 is a perspective view of the creation of a fixing device capable of quickly clamping and releasing a ladder handrail or a working platform guardrail for a working platform guardrail.

Fig. 3 is an exploded perspective view of the fixing device for the fast clamping and releasing ladder handrail or working platform guardrail.

FIG. 4 is a perspective view of the combination of the fixing device shown in FIG. 3 that can quickly clamp and release the ladder handrail or the working platform guardrail.

FIG. 5 is a perspective view of the fixed device that can quickly clamp and release the ladder handrail or the work platform guardrail of the created clamping clamp ladder handrail or the work platform guardrail fixed end.

Fig. 6 is a perspective view of the fixed end of the handrail or working platform guardrail that can quickly clamp and release the ladder handrail or working platform guardrail.

Please refer to FIG. 1 and FIG. 2, the ladder A shown in FIG. 1 is an A-shaped ladder, in which two ends of two handrails A1 made of pipe fittings are respectively created with a quick fixing and releasing fixture 1 fixed to the ladder frame on both sides of the A-shaped ladder; shown in Figure 2 is the working platform B, in which the three lower ends of the two guardrails B1 made of pipe parts are respectively created with a quick clamping and release The fixing device 1 is fixed to the frame on both sides of the working platform B.

Please refer to FIG. 3 and FIG. 4, the fixing device 1 of the invention can quickly clamp and release the ladder handrail or working platform guardrail includes a fixing seat 11, a screw 12, a cam handle 13, a pivot assembly 14, A washer 15, a spring 16 and a nut 17. The fixing seat 11 is a plate-shaped seat, and is located near the opposite left and right sides thereof, and is provided with a plurality of fixing holes 112, which are fixed to the ladder or working platform by a locking member such as a bolt; in addition, the fixing seat 11 In the middle part, a clamping cylinder 111 is fixed, and the clamping cylinder 111 extends to the upper and lower opposite sides of the fixing base 11; the inner edge surface of the clamping cylinder 111 is provided with a plurality of equal distances and extends to both ends of the clamping cylinder 111 Long clamping bar 1111 (four long clamping bars 1111 are shown in FIGS. 3 and 4); meanwhile, a long opening extending to both ends of the clamping cylinder 111 is provided opposite to the middle portion of the fixing base 11; adjacent to the clamping cylinder 111 At the long opening, two first and second clamping plates 1112 and 1113 that are opposite and parallel to each other extend out; the first and second clamping plates 1112 and 1113 are provided with corresponding first and second through holes 11121 and 11131, It is used to make the screw 12 extend. The screw 12 has a threaded section 121 and a connecting end 122 having a connecting hole 1221; the washer 15 is located outside the first clamping plate 1112 and corresponds to the first through hole 11121. The spring 16 is located between the first and second clamping plates 1112, 1113, and both ends thereof respectively contact the first and second clamping plates 1112, 1113, and correspond to the first and second through holes 11121, 11131. The nut 17 is located outside the second clamping plate 1113 and corresponds to the second through hole 11131. The threaded section 121 of the screw 12 passes through the washer 15, the first through hole 11121, the spring 16, and the second through hole 11131 in sequence, and is screwed with the nut 17 and is pressed against the second clamping plate by rotating and adjusting the nut 17 The best position of 1113 for quick clamping and release The effect of the end of the ladder handrail or the guardrail of the working platform. The cam handle 13 is provided with a split cam portion 131 and a handle portion 131. The split cam portion 131 has an eccentric shaft hole 1311 corresponding to the connecting hole 1221 of the connecting end 122 of the screw 12, so that the connecting end 122 of the screw 12 can extend into the split Between the cam parts 131, the connecting holes 1221 and the eccentric shaft holes 1311 are aligned, and then the connecting end 122 of the screw 12 and the cam head 131 are pivotably combined together by the pivot assembly 14. The above describes the detailed structure of the fixing device 1 of this invention, which can quickly clamp and release the ladder handrail or the working platform guardrail.

The operation of clamping the fixed end of the handrail or working platform guardrail of the creative device for quickly clamping and releasing the ladder handrail or working platform guardrail will be further described below. Please refer to FIG. 5 in conjunction with FIG. 4, when the fixed end of a ladder handrail A1 or work platform guardrail B1 is inserted into the clip 111 of the fixing device of the present invention, the flanges A11, B11 above the fixed end Against the upper end of the collet 111, and at this time, the grip portion 132 of the cam handle 13 is held clockwise, that is, the direction of the arrow rotation shown in FIG. 5, so that the split cam portion 131 is pressed against the washer 15, and the pressed The force in turn forces the first and second splints 1112, 1113 to move closer to each other in the direction of the other two arrows as shown in FIG. 5, thereby quickly clamping and fixing the clamp handrail A1 or the work platform guardrail B1 The fixed end is used for fast clamping and fixing the fixed end of the ladder handrail A1 or the working platform guardrail B1; moreover, the setting of the clamping strip 1111 in the collet 111 can further improve the collet clamping and fix the ladder handrail A1 Or the effect of the fixed end of the working platform guardrail B1.

The following will further explain the operation of the fixed device 1 for quickly clamping and releasing the ladder handrail or the work platform guardrail of this creation, and releasing the handrail or the fixed end of the work platform guardrail. Please refer to FIG. 6 in conjunction with FIG. 4, when the fixed end of the ladder handrail A1 or the work platform guardrail B1 is to be disassembled from the clamped state, go counterclockwise, which is the direction of the arrow shown in FIG. 6. , Rotate the handle portion 132 of the cam handle 13 so that the split cam portion 131 no longer presses against the washer 15, the first and second The splints 1112, 1113 move away from the direction of the other two arrows as shown in FIG. 6 because they are no longer stressed, and at the same time, by the rebound force of the spring 16, the first and second splints 1112, 1113 and the By opening the clamp 111, the fixed end of the ladder handrail A1 or the working platform guardrail B1 can be drawn away from the original fixing device 1.

The above detailed description of the structure and operation of the fixing device that can quickly clamp and release the ladder handrails or working platform guardrails is intended to make those familiar with this technology understand that this creation can not only solve the problems caused by traditional fixing methods In addition, it has the advantages that the traditional fixing method does not have. It is not used to limit this creation. The replacement and modification of the equivalent components should still belong to the scope of this creation. In addition, the creative device that can quickly clamp and release ladder handrails or working platform guardrails is suitable for the industrial use, novelty and progress of the patent law. I file a new patent application according to law, please Benefiting form examination and granting patents, I feel virtuous.

1‧‧‧ Fastening and releasing fixtures for ladder handrails or working platform guardrails

11‧‧‧Fixed seat

111‧‧‧Clamp

112‧‧‧Fixed hole

1111‧‧‧Long clip

1112‧‧‧The first splint

1113‧‧‧Second splint

11121‧‧‧First through hole

11131‧‧‧Second through hole

12‧‧‧screw

121‧‧‧Thread section

122‧‧‧Connector

1221‧‧‧Connecting hole

13‧‧‧Cam handle

131‧‧‧Split cam

132‧‧‧handle

1311‧‧‧Eccentric shaft hole

14‧‧‧Pivot combination

15‧‧‧washer

16‧‧‧Spring

17‧‧‧ Nut

Claims (4)

A fixing device capable of quickly clamping and releasing ladder handrails or work platform guardrails, comprising: a plate-shaped fixing seat with left and right opposite sides and upper and lower opposite sides, fixed to the ladder or work The platform is provided with a clamping tube with a long opening between the left and right opposite sides and extending to the upper and lower opposite sides, the long opening extends to both ends of the clamping tube, adjacent to the two sides of the long opening At the clamping barrel, two first and second clamping plates that are opposite and parallel to each other protrude outward. The first and second clamping plates are respectively provided with a first through hole and a second through hole corresponding to each other; a washer is located at the first The outer edge of the splint corresponds to the first through hole; a spring is located between the first and second splints, and its two ends contact the first and second splints respectively, and correspond to the first and second through holes; a nut is located at the second splint The outer edge corresponds to the second through hole; a screw has a threaded section extending from one end and the other end is a connecting end with a connecting hole, the threaded section passes through the washer, the first through hole, the spring and the second through hole in sequence It extends from the second splint and is screwed with the nut; a cam handle is provided with a split cam portion and a handle portion, the split cam portion has an eccentric shaft hole corresponding to the connecting end of the screw, and is combined by a pivot The connecting end of the screw is pivotally combined with the split cam portion. The fixing device according to claim 1, wherein the inner edge surface of the clamping cylinder is provided with a plurality of parallel clamping strips at equal intervals extending to both ends of the clamping cylinder to improve the clamping effect. The fixing device according to claim 2, wherein when the fixed end of a ladder or working platform is inserted into the collet, the handle is held and rotated clockwise, so that the split cam portion is pressed against the washer. The force of the force forces the first and second clamping plates to move closer to each other, so that the clamping cylinder quickly clamps and fixes the ladder handrail or the working platform guardrail. The fixing device according to claim 3, wherein when the fixed end of the ladder handrail or the working platform is to be disassembled from the clamped state, rotate the handle part counterclockwise so that the split cam part no longer presses against the washer, The first and second splints move in opposite directions because they are no longer stressed. At the same time, by the rebound force of the spring, the first and second splints are quickly opened and the clamping cylinder is released, so that the ladder handrail or working platform The fixed end of the guardrail can be quickly pulled away from the collet.

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