CN218216080U

CN218216080U - Needle withdrawing device convenient to operate

Info

Publication number: CN218216080U
Application number: CN202221623960.XU
Authority: CN
Inventors: 林颜
Original assignee: Zhejiang Jingrui Instrument Equipment Co ltd
Current assignee: Zhejiang Jingrui Instrument Equipment Co ltd
Priority date: 2022-06-27
Filing date: 2022-06-27
Publication date: 2023-01-03
Anticipated expiration: 2032-06-27

Abstract

The utility model discloses a needle withdrawing device convenient to operate, which comprises a handle, a mandril, a tooth supporting pipe and a fastener, wherein the handle is internally provided with a through hole for the mandril to pass through, the front end of the handle is provided with a mounting hole, and the mounting hole and the through hole are coaxially arranged; the tail end of the tooth supporting pipe is arranged in the mounting hole and is fixed by a fastening piece, and the fastening piece is of a hollow structure and is in threaded fit with the mounting hole; the head of the ejector rod extends into the tail end of the tooth supporting pipe, the tail of the ejector rod extends out of the rear end of the handle, and an end cap is fixed at the tail of the ejector rod. The tooth supporting pipe and the ejector rod of the utility model are of a split structure, the tooth supporting pipe is fixed on the handle by the fastener, the worn tooth supporting pipe can be quickly replaced by a new one, and the tooth supporting pipes of different types can be replaced, so as to match more connecting terminals; the ejector rod can be manually and freely adjusted, a return spring does not need to be arranged inside the ejector rod, the internal structure of the handle is simplified, and the service life of the needle withdrawing device is prolonged.

Description

Needle withdrawing device convenient to operate

Technical Field

The utility model relates to an electrical element technical field, in particular to move back needle ware convenient to operation.

Background

The wiring terminal is an important electrical element for connecting electrical equipment, and has wide application in the field of equipment, when the wiring terminal connected with a wiring harness needs to disassemble a socket or rearrange lines to replace wires in actual life or application, the wiring terminal of the wiring harness needs to be taken out from the wiring socket or the terminal, and at the moment, a pin withdrawing device is usually used for ejecting the terminal or the wiring terminal out.

The pin withdrawing device generally comprises a handle, an ejector rod and a pin withdrawing piece, wherein the ejector rod is arranged in the handle, the pin withdrawing piece is movably sleeved on the ejector rod, a basket-shaped fastener is arranged on a terminal with a contact pin, and the fastener is used for preventing the terminal from being separated. The front end of the pin withdrawing piece is of a tubular structure and is used for receiving the basket-shaped limiting piece into the tube, enabling the basket-shaped limiting piece to leave a wiring socket of the electric connector, and then ejecting the contact pin out through the ejector rod to finish the pin withdrawing work. The needle withdrawing piece on the needle withdrawing device needs to be folded into the basket-shaped limiting piece, the needle withdrawing piece can have the problems of abrasion, deformation and the like after being used for a period of time, the needle cannot be withdrawn continuously, the needle withdrawing piece and the ejector rod are fixed on the handle together, and therefore after the needle withdrawing piece is abraded, although the ejector rod and the handle have no problem, the whole needle withdrawing device cannot be used continuously, only can be discarded, the resource waste is caused, and the processing cost is increased. And a spring is arranged on a push rod of the needle withdrawing device, the push rod is reset through the spring, after the needle withdrawing device is used for a long time, elastic fatigue can occur, and the working efficiency of the needle withdrawing device is influenced.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem, the utility model provides a move back needle ware convenient to operation, removable easy wearing and tearing prop the toothed tube, and need not the spring and reset, prolong the life who moves back the needle ware greatly.

Therefore, the technical scheme of the utility model is that: a needle withdrawing device convenient to operate comprises a handle, a mandril, a tooth supporting pipe and a fastener, wherein a through hole for the mandril to pass through is formed in the handle; the tail end of the tooth supporting pipe is arranged in the mounting hole and is fixed by a fastening piece, and the fastening piece is of a hollow structure and is in threaded fit with the mounting hole; the head of the ejector rod extends into the tail end of the tooth supporting pipe, the tail of the ejector rod extends out of the rear end of the handle, and an end cap is fixed at the tail of the ejector rod.

The utility model discloses set up into split type with ejector pin tooth support pipe, the tooth support pipe of easy wearing and tearing is fixed at the handle front end through the fastener, and the ejector pin can be adjusted freely by hand, and the inside need not to set up reset spring, has simplified the handle inner structure; during the use, the pulling end cap for the ejector pin tip is close to and props the gear sleeve end, then will prop the gear sleeve on the terminal, receives the locating part that will turn flower basket form and props in the gear sleeve, promotes the ejector pin after that for the ejector pin tip is used in on the contact pin, pushes out the contact pin, accomplishes needle work, convenient and fast. After the fastener is taken down, a new tooth supporting pipe can be replaced, or when the size of a terminal needing to withdraw a needle is different, tooth supporting pipes of different models can be replaced, one needle withdrawing device can be provided with the tooth supporting pipes of different models and different quantities during sale, the use range of the needle withdrawing device is enlarged, and the service life of the needle withdrawing device is prolonged.

Preferably, the inner diameter of the mounting hole is larger than that of the through hole, a step surface is formed at the intersection of the mounting hole and the through hole, a gasket is arranged on the step surface, and the bottom of the tooth supporting pipe and the head of the ejector rod are both attached to the gasket. After the reset spring is not required to be installed inside the handle, the through hole inside the handle is only slightly larger than the ejector rod, the ejector rod can pass conveniently, the ejector rod head is arranged in the installation hole and limited by the step surface, the ejector rod can be prevented from being drawn out from the rear end of the handle, and the operation is more convenient.

Preferably, the ejector rod is elongated and is divided into an ejector rod head and an ejector rod body, the outer diameter of the ejector rod head is larger than that of the ejector rod body, the inner diameter of the through hole in the handle is matched with that of the ejector rod body, and the inner diameter of the through hole is smaller than that of the ejector rod head. The ejector pin head is thicker than the top body, and during assembly, the ejector pin is inserted into the through hole from the front end of the handle, the ejector pin head cannot pass through the through hole, and the ejector pin tail extends out of the rear end of the handle to fix the end cap.

Preferably, the mounting hole of the handle is provided with an internal thread structure, the fastener is provided with an external thread structure, and the two are fixed in a threaded manner; the tail end of the tooth supporting pipe is provided with an edge extending outwards, and the fastening piece is pressed on the edge of the tooth supporting pipe. The fastener is hollow, the tail end of the tooth supporting pipe is fixed on the handle by the fastener, and the front end of the tooth supporting pipe can penetrate out of the fastener.

Preferably, the front end of the end cap is provided with a jack, the side surface of the end cap is provided with a threaded hole, and the threaded hole is communicated with the jack; the tail part of the ejector rod is inserted into the jack, and the set screw penetrates through the threaded hole to be tightly matched with the tail part of the ejector rod. The end cap at the rear of the ejector rod is convenient for a user to push and pull the ejector rod, and meanwhile, the end cap can prevent the ejector rod from sliding out of the front end of the handle.

Preferably, handle and end cap are the plastics material, and the handle both sides are equipped with the portion of gripping of indent, and the end cap rear end is the arc structure. The plastic handle and the plastic end cap can reduce the overall weight of the needle withdrawing device, the holding part of the handle and the arc-shaped structure of the end cap can be convenient for users to use,

compared with the prior art, the beneficial effects of the utility model are that: the tooth supporting pipe and the ejector rod are of a split structure, the tooth supporting pipe is fixed on the handle by a fastener, the worn tooth supporting pipe can be quickly replaced by a new one, and the tooth supporting pipes of different types can be replaced, so that more connecting terminals can be matched; the ejector rod can be manually and freely adjusted, a return spring does not need to be arranged inside the ejector rod, the internal structure of the handle is simplified, and the service life of the needle withdrawing device is prolonged.

Drawings

The following detailed description will be given with reference to the accompanying drawings and embodiments of the present invention

FIG. 1 is a schematic structural view of the utility model in a normal state;

FIG. 2 is a sectional view showing a normal state of the present invention;

FIG. 3 is a schematic structural view of the needle withdrawing state of the present invention;

FIG. 4 is a sectional view of the needle withdrawing structure of the present invention;

labeled as: the handle 1, the holding part 11, the first through hole 12, the mounting hole 13, the step surface 14, the gasket 15, the ejector rod 2, the ejector rod head 21, the ejector rod body 22, the tooth supporting pipe 3, the edge 31, the fastener 4, the end cap 5, the insertion hole 51, the threaded hole 52, the set screw 53 and the arc-shaped structure 54.

Detailed Description

In the description of the present invention, it should be noted that, for the terms of orientation, such as "central", "transverse (X)", "longitudinal (Y)", "vertical (Z)", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like, indicate that the orientation and positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, but not for indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and should not be construed as limiting the specific scope of the present invention.

Furthermore, if the terms "first" and "second" are used for descriptive purposes only, they are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features. Thus, the definition of "a first" or "a second" feature may explicitly or implicitly include one or more of the features, and as used in the description of the invention, the definition of "a plurality" or "a plurality" means two or more unless otherwise explicitly specified.

See the drawings. The needle withdrawing device comprises a handle 1, an ejector rod 2, a tooth supporting pipe 3 and a fastener 4, wherein the handle 1 is made of plastic, concave holding parts 11 are arranged on two sides of the handle 1, a first through hole 12 for the ejector rod 2 to pass through is formed in the handle 1, a mounting hole 13 is formed in the front end of the handle, and the mounting hole 13 and the first through hole 12 are coaxially arranged; the inner diameter of the mounting hole 13 is larger than that of the first through hole 12, a step surface 14 is formed at the intersection of the mounting hole and the first through hole, and a gasket 15 is arranged on the step surface;

the tooth supporting pipe 3 is of a tubular structure, and the tail end of the tooth supporting pipe 3 is provided with an edge 31 extending outwards; the tail end of the tooth supporting pipe 3 is arranged in the mounting hole 13 and is fixed by a fastener 4; the fastener 4 is of a hollow structure, a second through hole for the tooth supporting pipe to pass through is formed in the fastener, an external thread structure is arranged on the outer side of the fastener, an internal thread structure is arranged in the mounting hole 13 of the handle, and the fastener and the handle are fixed through threads; the fastener 4 is pressed against the end edge 31 of the brace pipe so that it engages the washer 15 in the handle. The tooth supporting pipe 3 can be replaced by unscrewing the fastener 4.

The ejector rod 2 is in a long and thin shape and is divided into an ejector rod head 21 and an ejector rod body 22, the outer diameter of the ejector rod head 21 is larger than that of the ejector rod body 22, the inner diameter of the first through hole 12 in the handle is slightly larger than that of the ejector rod body 22, the ejector rod body can conveniently penetrate through the first through hole 12, and the inner diameter of the first through hole 12 is smaller than that of the ejector rod head 21. After the reset spring is not required to be installed inside the handle, the through hole inside the handle is only slightly larger than the ejector rod, the ejector rod can pass conveniently, the ejector rod head is arranged in the installation hole and limited by the step surface, the ejector rod can be prevented from being drawn out from the rear end of the handle, and the operation is more convenient.

The ejector rod head 21 is positioned at the tail end of the tooth supporting pipe 3, and the tail end of the ejector rod head 21 is limited by the gasket 15. The mandril body 22 passes through the first through hole 12 of the handle, and the tail part of the mandril extends out of the rear end of the handle to fix an end cap 5.

The end cap 5 is made of plastic materials, the front end of the end cap 5 is provided with an insertion hole 51, the side surface of the end cap 5 is provided with a threaded hole 52, and the threaded hole is communicated with the insertion hole; the tail part of the ejector rod 2 is inserted into the insertion hole 51, the set screw 53 penetrates through the threaded hole 52 and is tightly matched with the tail part of the ejector rod, and the rear end of the end cap 5 is of an arc-shaped structure 54. The end cap at the rear of the ejector rod is convenient for a user to push and pull the ejector rod, and meanwhile, the end cap can prevent the ejector rod from sliding out of the front end of the handle.

During assembly, the tooth supporting pipe 3 is placed into the mounting hole 13 of the handle, the fastening piece 4 is sleeved on the tooth supporting pipe 3 and moves to the mounting hole 13, the fastening piece 4 is rotated to be fastened with the mounting hole in a threaded manner, and the fastening piece 4 presses the tail end of the tooth supporting pipe 3 on the gasket 15; then the ejector rod 2 penetrates through one side of the tooth supporting pipe 3, the head part 21 of the ejector rod is arranged in the tooth supporting pipe 3, the tail part of the ejector rod penetrates out of the tail end of the handle 1, and then the end cap 5 is fixed at the tail part of the ejector rod, so that the installation work of the needle withdrawing device can be completed.

During the use, pulling end cap 5 for ejector pin head 21 is close to and props 3 ends of toothed tube, then will prop toothed tube 3 cover on the terminal, receives the locating part that will turn flower basket form and props in the toothed tube, promotes ejector pin 2 after that for ejector pin head 22 is used in on the contact pin, pushes out the contact pin, accomplishes the work of withdrawing the needle.

After long-time use, prop the pipe gear 3 and appear wearing and tearing, take off fastener 4 this moment, can change the new pipe gear that props, or when the terminal size that needs move back the needle is different, also can change the pipe gear that props of different models.

It is above only the utility model discloses a preferred embodiment, the utility model discloses a scope of protection not only limits in above-mentioned embodiment, and the fan belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that modifications and embellishments within the scope of the present disclosure may be made by those skilled in the art without departing from the principles of the present disclosure.

Claims

1. The utility model provides a withdraw of needle ware convenient to operation which characterized in that: the handle is internally provided with a through hole for the ejector rod to pass through, the front end of the handle is provided with a mounting hole, and the mounting hole and the through hole are coaxially arranged; the tail end of the tooth supporting pipe is arranged in the mounting hole and is fixed by a fastening piece, and the fastening piece is of a hollow structure and is in threaded fit with the mounting hole; the head of the ejector rod extends into the tail end of the supporting gear tube, the tail of the ejector rod extends out of the rear end of the handle, and an end cap is fixed at the tail of the ejector rod.

2. An easy to operate needle ejector as defined in claim 1, wherein: the inner diameter of the mounting hole is larger than that of the through hole, a step surface is formed at the intersection of the mounting hole and the through hole, a gasket is arranged on the step surface, and the bottom of the tooth supporting pipe and the head of the ejector rod are both attached to the gasket.

3. An easy to operate needle ejector as defined in claim 2, wherein: the ejector rod is in a slender shape and is divided into an ejector rod head and an ejector rod body, the outer diameter of the ejector rod head is larger than that of the ejector rod body, the inner diameter of a through hole in the handle is matched with that of the ejector rod body, and the inner diameter of the through hole is smaller than that of the ejector rod head.

4. An easy to operate needle ejector as defined in claim 1, wherein: the mounting hole of the handle is provided with an internal thread structure, the fastening piece is provided with an external thread structure, and the two are fixed by threads; the tail end of the tooth supporting pipe is provided with an edge extending outwards, and the fastening piece is pressed on the edge of the tooth supporting pipe.

5. An easy to operate needle ejector as defined in claim 1, wherein: the front end of the end cap is provided with an insertion hole, the side surface of the end cap is provided with a threaded hole, and the threaded hole is communicated with the insertion hole; the tail part of the ejector rod is inserted into the jack, and the set screw penetrates through the threaded hole to be tightly matched with the tail part of the ejector rod.

6. An easy to operate needle ejector as claimed in claim 5, wherein: the handle and the end cap are made of plastic materials, concave holding parts are arranged on two sides of the handle, and the rear end of the end cap is of an arc-shaped structure.