CN201711939U

CN201711939U - Self-locking telescopic nail puller

Info

Publication number: CN201711939U
Application number: CN2010202374054U
Authority: CN
Inventors: 温昊
Original assignee: Shanghai Kunjie Hardware Tool Co Ltd
Current assignee: Shanghai Kunjie Hardware Tool Co Ltd
Priority date: 2010-06-24
Filing date: 2010-06-24
Publication date: 2011-01-19
Anticipated expiration: 2020-06-24

Abstract

The utility model provides a self-locking telescopic nail puller. The self-locking telescopic nail puller comprises a nail pulling bar, and a nail pulling head and a shovel head which are connected with the two ends of the nail pulling bar, wherein the nail pulling bar is adjustable in length and comprises a sleeve, a telescopic bar and a self-locking mechanism; the telescopic bar is embedded inside the sleeve and can move along the sleeve, the self-locking mechanism is arranged on the sleeve and can automatically lock any telescopic state of the telescopic bar; the nail pulling head is connected with the rear end of the sleeve; and the shovel head is connected with the front end of the telescopic bar. The self-locking telescopic nail puller can replaced a plurality of nail pullers with different specifications in the prior art. The nail puller can be simply and conveniently adjusted to different lengths according to the requirements and automatically locked.

Description

The self-locking nail puller that stretches

Technical field

The utility model relates to a kind of hand-held tool, particularly a kind of self-locking nail puller that stretches.

Background technology

The nail puller of prior art generally all is fixed dimension of a kind of specification, and length can not change, and when using like this, often needs to adopt according to environment requirement the nail puller of different length under different environment, very trouble.For this reason, a kind of flexible nail puller occurred, its length can be regulated within the specific limits; though but the flexible nail puller of prior art can be regulated its length within the specific limits; but can not form locking after the length variations, use regular meeting and occur becoming flexible, cause producing safety problem.Though perhaps can form locking, the mode of locking is very loaded down with trivial details, inconvenient operation.

The utility model content

The purpose of this utility model is exactly in order to solve the problem that above-mentioned prior art exists, and a kind of self-locking nail puller that stretches is provided.

In order to achieve the above object, the utility model has adopted following technical scheme: a kind of self-locking nail puller that stretches, comprise wrenching bar and be connected playing ailhead and shoveling head of wrenching bar two ends, described wrenching bar is length-adjustable wrenching bar, and this wrenching bar comprises sleeve pipe, expansion link and self-locking mechanism; Expansion link is nested in can be along the sleeve pipe telescopic moving in the sleeve pipe, and self-locking mechanism is installed on the sleeve pipe and can forms locking automatically to the arbitrarily flexible state of expansion link; Described ailhead is connected the rear end of sleeve pipe; Described shovel head is connected the front end of expansion link.

Described self-locking mechanism comprises connector, locking press button and spring; Connector is installed in the front portion of sleeve pipe, and connector is provided with U-lag; Locking press button is arranged in the U-lag of connector and by bearing pin and connector is rotatable links to each other, the front end of locking press button is provided with the latch hook that bends inwards, and this latch hook can pass sleeve pipe the state that stretches arbitrarily of expansion link is formed locking automatically; Spring is connected the elastic force that self-locking is provided to locking press button between the rear end of locking press button and the U-lag bottom land on the connector.

Described sleeve pipe is an oval pipe, and its front end is provided with a lockhole that is used to pass the latch hook of locking press button.

Described expansion link is the elliptical rod similar to sleeve pipe, and the afterbody of expansion link is connected with slide block, the size of slide block and the inner chamber of sleeve pipe is suitable and can slide along the inwall of sleeve pipe; A broad side surface at expansion link is provided with the helical teeth that a row is trapezoidal arrangement; The lockhole that the front end latch hook of locking press button passes sleeve pipe inserts between the adjacent helical teeth of expansion link and forms locking.

Also comprise plastic wrapper, this plastic wrapper is sleeved on the sleeve pipe.

The flexible nail puller of the utility model self-locking can replace the nail puller of traditional a plurality of different sizes.Can be adjusted to different length as required and form locking automatically, and regulate simple and convenient.

Description of drawings

Fig. 1 is the structural representation of facing of the flexible nail puller of the utility model self-locking;

Fig. 2 is the side-looking structural representation of the flexible nail puller of the utility model self-locking;

Fig. 3 is the decomposition texture schematic diagram of the flexible nail puller of the utility model self-locking;

Fig. 4 is the elongation lock-out state schematic diagram of the flexible nail puller of the utility model self-locking;

Fig. 5 is the A-A cross-sectional schematic of Fig. 4;

Fig. 6 is the contraction lock-out state schematic diagram of the flexible nail puller of the utility model self-locking;

Fig. 7 is the B-B cross-sectional schematic of Fig. 6.

The specific embodiment

Referring to Fig. 1, Fig. 2, cooperate referring to Fig. 3, Fig. 4, Fig. 5, Fig. 6, Fig. 7.The self-locking of the present utility model nail puller that stretches, what comprise wrenching bar 1 and be connected the wrenching bar two ends plays ailhead 2 and shovel 3, and wrenching bar 1 is length-adjustable wrenching bar, and this wrenching bar comprises sleeve pipe 11, expansion link 12 and self-locking mechanism 13; Expansion link 12 is nested in can be along the sleeve pipe telescopic moving in the sleeve pipe 11, and self-locking mechanism 13 is installed on the sleeve pipe and can forms locking automatically to the arbitrarily flexible state of expansion link 12; Play ailhead 2 and be connected the rear end of sleeve pipe 11; Shovel 3 is connected the front end of expansion link 12.

Cooperation is referring to Fig. 3, and the self-locking mechanism 13 in the utility model comprises connector 131, locking press button 132 and spring 133; Connector 131 is installed in the front portion of sleeve pipe, and connector 131 is provided with U-lag 1311; Locking press button 132 is arranged in the U-lag of connector 1311 and by bearing pin 134 and connector is rotatable links to each other, the front end of locking press button 132 is provided with the latch hook 1321 that bends inwards, and this latch hook 1321 can pass sleeve pipe the arbitrarily flexible state of expansion link 12 is formed locking automatically; Spring 133 is connected the elastic force that self-locking is provided to locking press button between the rear end of locking press button and the U-lag bottom land on the connector.

Sleeve pipe 11 in the utility model is an oval pipe, and its front end is provided with a lockhole 111 that is used to pass the latch hook 1321 of locking press button 132.

Expansion link 12 in the utility model is the elliptical rod similar to sleeve pipe, and the afterbody of expansion link is connected with slide block 121, and the inner chamber of the size of slide block 121 and sleeve pipe 11 is suitable and can slide along the inwall of sleeve pipe; A broad side surface at expansion link is provided with the helical teeth 122 that a row is trapezoidal arrangement; The lockhole 111 that the front end latch hook 1321 of locking press button 132 passes sleeve pipe inserts between the adjacent helical teeth 122 of expansion links and forms locking.

The utility model also can comprise plastic wrapper 4, and this plastic wrapper 4 is sleeved on the sleeve pipe 11.

The flexible nail puller of self-locking of the present utility model is when regulating length, only need press locking press button, the helical teeth of the front end latch hook disengaging expansion link of locking press button is unlocked, pulling (or promotion) expansion link is to certain length, unclamp locking press button again, locking press button promptly inserts expansion link once more under the effect of spring relevant position forms locking.Nail puller can use under new length condition.

Fig. 4, Figure 5 shows that the elongation lock-out state schematic diagram of the flexible nail puller of the utility model self-locking; Fig. 6, Figure 7 shows that the contraction lock-out state schematic diagram of the flexible nail puller of the utility model self-locking.

Claims

1. the flexible nail puller of self-locking comprises wrenching bar and is connected playing ailhead and shoveling head of wrenching bar two ends, and it is characterized in that: described wrenching bar is length-adjustable wrenching bar, and this wrenching bar comprises sleeve pipe, expansion link and self-locking mechanism; Expansion link is nested in can be along the sleeve pipe telescopic moving in the sleeve pipe, and self-locking mechanism is installed on the sleeve pipe and can forms locking automatically to the arbitrarily flexible state of expansion link; Described ailhead is connected the rear end of sleeve pipe; Described shovel head is connected the front end of expansion link.

2. the self-locking as claimed in claim 1 nail puller that stretches, it is characterized in that: described self-locking mechanism comprises connector, locking press button and spring; Connector is installed in the front portion of sleeve pipe, and connector is provided with U-lag; Locking press button is arranged in the U-lag of connector and by bearing pin and connector is rotatable links to each other, the front end of locking press button is provided with the latch hook that bends inwards, and this latch hook can pass sleeve pipe the state that stretches arbitrarily of expansion link is formed locking automatically; Spring is connected the elastic force that self-locking is provided to locking press button between the rear end of locking press button and the U-lag bottom land on the connector.

3. the self-locking as claimed in claim 1 nail puller that stretches, it is characterized in that: described sleeve pipe is an oval pipe, its front end is provided with a lockhole that is used to pass the latch hook of locking press button.

4. the self-locking as claimed in claim 1 nail puller that stretches is characterized in that: described expansion link is the elliptical rod similar to sleeve pipe, and the afterbody of expansion link is connected with slide block, and the size of slide block is with the inner chamber of sleeve pipe is suitable and can be along the inwall slip of sleeve pipe; A broad side surface at expansion link is provided with the helical teeth that a row is trapezoidal arrangement; The lockhole that the front end latch hook of locking press button passes sleeve pipe inserts between the adjacent helical teeth of expansion link and forms locking.

5. the self-locking as claimed in claim 1 nail puller that stretches, it is characterized in that: also comprise plastic wrapper, this plastic wrapper is sleeved on the sleeve pipe.