CN109397193B - Claw support for hand-held dismounting smoke sensor - Google Patents
Claw support for hand-held dismounting smoke sensor Download PDFInfo
- Publication number
- CN109397193B CN109397193B CN201811454481.8A CN201811454481A CN109397193B CN 109397193 B CN109397193 B CN 109397193B CN 201811454481 A CN201811454481 A CN 201811454481A CN 109397193 B CN109397193 B CN 109397193B
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- Prior art keywords
- pipe
- claw
- tube
- cylindrical cam
- spring plate
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B27/00—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
- B25B27/14—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for assembling objects other than by press fit or detaching same
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25J—MANIPULATORS; CHAMBERS PROVIDED WITH MANIPULATION DEVICES
- B25J1/00—Manipulators positioned in space by hand
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Robotics (AREA)
- Fire-Detection Mechanisms (AREA)
- Manufacturing Of Cigar And Cigarette Tobacco (AREA)
Abstract
The invention discloses a claw holder for a handheld dismounting smoke sensing device, which comprises a pipe, claws positioned at the front end of the pipe and handles positioned at the rear end of the pipe, wherein the number of the claws is at least two, each claw consists of a metal outer spring plate on the outer wall of a rear end connecting pipe and a metal inner spring plate of a sliding piece in the rear end connecting pipe, and the front end of the metal outer spring plate is fixedly connected with the front end of the metal inner spring plate to form the front end of the claw; the sliding piece in the pipe is connected with one end of a pull rope which pulls back to enable the front end of the claw to grasp the probe of the smoke sensing device, and the other end of the pull rope is connected with a trigger hinged on the handle; the inner side surface of the front end of each claw is fixed with a friction block. The grab support also comprises a structure which is used for grasping the handle and the trigger to drive the pull rope to enable the pull rope to be in sliding fit with the cylindrical cam in the pipe so as to realize the axial movement of the cylindrical cam and simultaneously rotate circumferentially, and the claw is driven to rotate by the sliding piece in the pipe, so that the probe is rotated and screwed on the base. The claw support has the advantages of good grasping degree, strong reliability in working, simple structure and convenient and labor-saving operation.
Description
Technical Field
The invention relates to the technical field of disassembly and assembly of indoor top wall smoke sensing devices, in particular to a claw holder for a handheld disassembly and assembly smoke sensing device.
Background
Fire alarm systems have been an essential electrical system in modern building installations, where smoke sensing devices, also known as smoke alarm devices, are commonly referred to as smoke sensing and temperature sensing devices. Smoke sensing devices are commonly installed on ceilings of indoor walkways and rooms as end devices of fire alarm systems and are bulky in number. The smoke sensing device, namely smoke sensing and temperature sensing, is divided into a base and a probe, and the connection mode of the base and the probe is that the probe is buckled into the base and then rotated and combined, namely screwed. In actual installation, the base is usually installed first, and then the probe is installed. Thus, secondary high-rise operation is caused, and if disassembly is needed, tertiary high-rise operation is also caused. The technical staff designs a claw holder for the handheld dismounting smoke sensing device. However, the grip holders for the hand-held type smoke sensor in the prior art have insufficient grip strength, that is, the grip strength is not ideal, the friction force between the grip and the probe of the smoke sensor is insufficient, and the structure is complex. The claw support for the handheld dismounting smoke sensor in the prior art has a common defect that the rotation and screwing can only be realized by means of the twisting of hands, so that the labor is wasted, the labor intensity is increased, and the screwing effect is not ideal.
Disclosure of Invention
The invention aims to solve the technical problem of providing a claw holder for a handheld type smoke sensor dismounting device, which is good in grasping degree and simple in structure.
The technical scheme of the invention is that the claw holder for the handheld smoke-sensing dismounting device comprises a pipe, claws positioned at the front end of the pipe and handles positioned at the rear end of the pipe, wherein the number of the claws is at least two, each claw consists of an outer metal elastic sheet on the outer wall of a rear-end connecting pipe and an inner metal elastic sheet of a sliding piece in the rear-end connecting pipe, and the front end of the outer metal elastic sheet is fixedly connected with the front end of the inner metal elastic sheet to form the front end of the claw; the sliding piece in the tube is connected with one end of a pulling device which pulls back to enable the front end of the claw to grasp the probe of the smoke sensing device, and the other end of the pulling device is connected with a trigger hinged on the handle.
After adopting the structure, the invention has the following advantages: the handle and the trigger are held by adopting a claw structure formed by matching the inner metal elastic sheet and the outer metal elastic sheet, and the inner metal elastic sheet can drive the outer metal elastic sheet to further grip the probe of the smoke sensing device by the claw only by forcefully driving the pulling device such as the pull rope or the pull rod, and after the claw faces to the base of the smoke sensing device, the probe can be screwed on the base by rotating the handle while holding the handle and the trigger, and the trigger is released, so that the claw is released and returns to the original state, namely the waiting working state under the resilience force of the inner metal elastic sheet and the outer metal elastic sheet. When the smoke detector is required to be disassembled, the probe can be screwed on the base by reversely rotating the hand while the handle and the trigger are held, and the trigger is loosened, so that the claw is instantly released and is restored to the original state, namely the to-be-operated state under the resilience force of the inner and outer metal elastic sheets. The claw support for the handheld dismounting smoke sensor has the advantages of good grasping degree, high reliability in working, simple structure and convenience in operation, and provides an effective and reliable tool for workers to avoid twice ascending operations and easily dismount the smoke sensor on the ground.
Further, a friction block is fixed on the inner side surface of the front end of each claw. After adopting above structure, the grasping degree of its claw is better, and the claw is better with the probe frictional force of smoke sensing device, and the probe rotates with the base and closes the effect better during dismouting.
Further, the friction block is an arc-shaped block matched with the shape of the smoke sensing device where the probe is positioned. After the structure is adopted, the claw grabs the probe of the smoke sensing device more firmly.
Further, the claws are four and are uniformly arranged along the outer circumference of the tube. After the structure is adopted, the grasping degree of the claw to the probe of the smoke sensing device is further improved, the friction force between the claw and the probe of the smoke sensing device is further enhanced, and the rotating and screwing effect of the probe and the base is further improved during disassembly and assembly.
Further, the pipe is a circular pipe, the outer wall of the circular pipe is axially limited and is circumferentially matched with a sleeve in a rotating way, and the rear end of the outer metal elastic sheet is fixed on the sleeve; the claw support that device was felt to handheld dismouting cigarette still include sliding fit in intraductal cylindrical cam, cylindrical cam's centre bore slip cover is on dragging the device, cylindrical cam's preceding terminal surface has the structure that makes both circumference spacing with the rear end face of intraductal sliding part, cylindrical cam's rear end face offsets with the one end of a pressure spring, the other end axial of this pressure spring is spacing on the intraductal wall, guide slot on the outer circumference of cylindrical cam cooperates with the guide pin of fixing on the intraductal wall in order to realize cylindrical cam axial displacement the circumference rotate and drive claw rotation through intraductal sliding part. After the additional embodiment is adopted, in operation, the handle and the trigger can be gripped firstly to enable the claw to grip the probe, then the handle and the trigger are further gripped, at the moment, the pulling device such as a pull rope further tightens the sliding part in the pipe and enables the rear end face of the sliding part in the pipe to prop against the front end face of the cylindrical cam under the acting force of the pressure spring so as to realize circumferential limiting, and meanwhile, the guide groove on the outer circumference of the cylindrical cam is matched with the guide pin fixed on the inner wall of the pipe so as to realize circumferential rotation while the axial movement of the cylindrical cam and drive the claw to rotate through the sliding part in the pipe, and the probe is rotated and screwed on the base. When the trigger is released, the claw is released immediately under the resilience force of the outer metal elastic sheet, so that the claw returns to the original state, namely the to-be-operated state, and the cylindrical cam is restored to the original state by the pressure spring. This embodiment is applicable to both installation and removal, simply by arranging the guide slots of the cylindrical cams in opposite directions, i.e. the guide slot of one cylindrical cam is in the forward direction and the guide slot of the other cylindrical cam is in the reverse direction, i.e. two products of the claw holder of the invention, i.e. two products of the forward and reverse direction guide slots, are provided each time, one for installation and the other for removal, and the two products are identical in structure except for the direction of the cams and the method of use. The claw holder overcomes the common defect that the claw holder for the hand-held type dismounting smoke sensing device in the prior art can only be screwed by means of the twisting of hands, saves labor, greatly reduces the labor intensity of workers, and has more ideal rotating and screwing effects due to good concentricity.
Further, the pulling device adopts a pull rope; the axial middle part of the pipe is provided with a hinge structure which can fold the pipe: the inner tube of the inner tube and the outer tube which can rotate mutually is fixed with the rear end of the front section tube, the outer tube of the inner tube and the outer tube which can rotate mutually is fixed with the front end of the rear section tube, and the other side of the tube at the hinge structure is provided with a buckle for connecting or disconnecting the front section tube and the rear section tube of the side. After adopting above-mentioned structure, above two kinds of embodiments need transportation, carry, keep etc. all can shorten length by a wide margin, reduce the volume of packing thing, more convenient transportation, carry and keep etc..
Drawings
FIG. 1 is a schematic cross-sectional view of one embodiment of a jaw support of the present invention with the jaws naturally open.
FIG. 2 is a schematic cross-sectional view of the pawl holder of FIG. 1 in a naturally opened and collapsed state.
FIG. 3 is a schematic cross-sectional view of an alternative embodiment of a pawl support of the present invention with the pawl naturally open.
Fig. 4 is a schematic cross-sectional view of the jaw support of fig. 3 grasping a probe of a smoke sensing device.
Fig. 5 is a schematic cross-sectional view of the jaw support of fig. 3 grasping the probe of the smoke sensing device and rotating.
Fig. 6 is a schematic view of an embodiment of axial limiting of the end face of the sliding member in the cam and tube according to the present invention.
Shown in the figure are 1, a pipe, 2, a claw, 2.1, an outer metal elastic sheet, 2.2, an inner metal elastic sheet, 2.3, a claw front end, 3, a handle, 4, a sliding piece in the pipe, 5, a probe of a smoke sensing device, 6, a trigger, 7, a friction block, 8, a pull rope, 9, inner and outer pipes capable of mutually rotating, 10, a sleeve, 11, a cylindrical cam, 12, a pressure spring, 13, a guide groove, 14 and a guide pin.
Detailed Description
The following describes the embodiments of the present invention further with reference to the drawings. It should be noted that these embodiments are described herein for aiding in the understanding of the present invention, but are not to be construed as limiting the present invention. In addition, the technical features of the embodiments of the present invention described below may be combined with each other as long as they do not collide with each other.
Fig. 1 shows a claw holder for a handheld smoke sensor according to an embodiment of the invention.
Comprising a tube 1, a jaw 2 at the front end of the tube 1 and a handle 3 at the rear end of the tube 1, said jaw 2 being at least two, i.e. said jaw 2 may be two, three, etc., but is preferably four. Each claw 2 is composed of an outer metal spring plate 2.1 on the outer wall of the rear-end connecting pipe and an inner metal spring plate 2.2 of the inner sliding piece 4 of the rear-end connecting pipe, and the front end of the outer metal spring plate 2.1 is fixedly connected with the front end of the inner metal spring plate 2.2 to form a front claw end 2.3. In practical manufacturing, the outer metal spring 2.1 is generally longer than the inner metal spring 2.2, the front ends of the two metal springs can be level, and the rear end of the outer metal spring 2.1 is longer than the rear end of the inner metal spring 2.2. Of course, the front ends of the plurality of claws, such as four claws, are flush. Stainless steel metal spring plates can be adopted for the outer metal spring plate 2.1 and the inner metal spring plate 2.2.
The in-tube slider 4 is connected to one end of a pulling device which pulls back a probe 5 which grips the smoke sensing device with the front end 2.3 of the pawl, and the other end of the pulling device is connected to a trigger 6 hinged to the handle 3. The pulling device is a pull rope 8 or a pull rod, and the pull rope 8 is a steel wire rope or a nylon rope. If the pull rope 8 is adopted, the pull rope 8 and the sliding piece 4 in the pipe, such as a sliding block and a trigger 6, can be connected by adopting structures of welding after penetrating and winding or screwing with screw holes and the like. If a pull rod is used, the two ends of the pull rod may be connected to the inner slide of the tube, such as a slider and a trigger, using a hinge structure.
The inner side surface of the front end 2.3 of each claw can be fixed with a friction block 7 such as a rubber material, and the friction block 7 is an arc-shaped block matched with the shape of the position where the probe 5 of the smoke sensing device is grabbed, such as an arc-shaped block with an inward arc-shaped opening. The friction block 7 can be fixed on the front end 2.3 of the claw by using a screw cap or a rivet.
The tube 1 can be square tube or round tube. In the case of square tubes, the four preferred claws 2 are uniformly arranged along the periphery, that is, the outer metal elastic pieces 2.1 are uniformly distributed on the four outer walls of the tube 1, and the inner metal pieces 2.2 and the outer metal pieces 2.1 are at the same position on the periphery, so that it can be understood that only the outer metal elastic pieces 2.1 can be seen when the outer metal elastic pieces 2.1 and the inner metal elastic pieces 2.2 of one claw 1 are seen from the top view. In the case of a circular tube, the four preferred claws 2 are uniformly arranged along the outer circumferential wall of the tube 1, that is, the outer metal elastic pieces 2.1 are uniformly and equally distributed on the outer circumferential wall, and the inner metal elastic pieces 2.2 and the outer metal elastic pieces 2.1 are at the same position of the circumference, so that it can be understood that only the outer metal elastic pieces 2.1 and the inner metal elastic pieces 2.2 of one claw can be seen when seen from the top view. The outer metal spring 2.1 can be screwed on the outer wall of the pipe 1, and the inner metal spring 2.2 can be screwed on the front end of the sliding piece 4 such as a sliding block in the pipe.
Fig. 2, 3 and 4 show another embodiment of the claw holder for the handheld smoke sensor according to the present invention.
The rest of the construction of this embodiment is the same as in the above-described embodiment. The difference is that: the pipe 1 can only adopt the pipe, and axial spacing and circumference normal running fit have a sleeve pipe 10 on the outer wall of pipe, axial spacing be had a plurality of screw holes and the screw that closes axial spacing usefulness wherein on the pipe outer wall of sleeve pipe 10 both ends department, normal running fit is like movable sleeve. The rear end of the outer metal spring plate 2.1 is fastened to the sleeve 10, for example via a threaded hole and a locking screw. The claw support for the handheld smoke-sensing device comprises a cylindrical cam 11 which is in sliding fit in the pipe, and the central hole of the cylindrical cam 11 is in sliding fit on a pulling device such as a pull rope 8 such as a steel wire rope or is sleeved outside the pull rope 8 such as the steel wire rope. The front end face of the cylindrical cam 11 and the rear end face of the inner slide 4 have a structure for limiting the two in the circumferential direction, and preferably, the rear end face of the slide 4 shown in fig. 6 and the front end face of the cylindrical cam 11 have hexagonal prisms and hexagonal holes, i.e., hexagonal holes, which are mutually engaged, for example, the rear end face is provided with a hexagonal prism, and the front end face is provided with a hexagonal hole which is matched with the hexagonal prism. The front end face is provided with a plurality of bolts, the rear end face is provided with blind holes which are in one-to-one correspondence with the bolts, and of course, the bolts and the blind holes of the front end face and the rear end face can be replaced. The two end surfaces of the tooth surface are meshed with each other, such as conical teeth or triangular teeth, or the two end surfaces are meshed with each other, and the circumferential limit structure is formed by the punctiform concave-convex surfaces. The rear end face of the cylindrical cam 11 is abutted against one end of a pressure spring 12 or a support spring, and the other end of the pressure spring 12 is axially limited on the inner wall of the tube 1. The guide groove 13 on the outer circumference of the cylindrical cam 11 cooperates with the guide pin 14 fixed to the inner wall of the tube 1 to realize the circumferential rotation while the cylindrical cam 11 moves axially and rotates the pawl 2 via the tube inner slider 4. This embodiment is applicable to both installation and removal, simply by arranging the guide slots of the cylindrical cams in opposite directions, i.e. the guide slot of one cylindrical cam is in the forward direction and the guide slot of the other cylindrical cam is in the reverse direction, i.e. two products of the claw holder of the invention, i.e. two products of the forward and reverse direction guide slots, are provided each time, one for installation and the other for removal, and the two products are identical in structure except for the direction of the cams and the method of use.
Referring to fig. 5, the pulling device of both embodiments may employ a pull cord 8. The axial middle part of the tube 1 is provided with a hinge structure which can enable the tube 1 to be folded: at least one end of the inner tube and the outer tube 9 which can rotate mutually is fixed with the rear end of the front section tube, the outer tube of the inner tube and the outer tube 9 which can rotate mutually is fixed with the front end of the rear section tube, and the other side of the tube 1 at the hinge structure is provided with a buckle for connecting or disconnecting the front section tube and the rear section tube of the side. Of course, the positions of the inner tube and the outer tube can be exchanged, that is, at least one end of the inner tube in the inner tube and the outer tube which can rotate mutually is fixed with the front end of the rear tube, and the outer tube in the inner tube and the outer tube 9 which can rotate mutually is fixed with the rear end of the front tube.
The tubes of the two embodiments can be telescopic and provided with an axial limiting structure, such as an inner sleeve and an outer sleeve which are axially matched in a sliding way, and an axial limiting device such as a transverse through hole matched with an opening pin, or a circular tube which is matched in a sliding way, and a locking nut on the outer tube is used for axially limiting the inner sleeve and the outer sleeve. Of course, in coordination with the expansion and contraction of the tube, a spring-controlled reel, such as a reel similar to a tape measure structure, can be arranged on the trigger, and a circumferential limit structure, such as a bolt, for controlling circumferential limit of the reel is also arranged.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, and various modifications and variations of the present invention will be apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (4)
1. The utility model provides a claw support that device was used is felt to handheld dismouting cigarette, includes pipe (1), is located claw (2) of pipe (1) front end and is located handle (3) of pipe rear end, claw (2) are two at least, its characterized in that: each claw (2) is composed of an outer metal spring plate (2.1) on the outer wall of the rear-end connecting pipe and an inner metal spring plate (2.2) of the inner sliding piece (4) of the rear-end connecting pipe, and the front end of the outer metal spring plate (2.1) is fixedly connected with the front end of the inner metal spring plate (2.2) to form a claw front end (2.3); the sliding piece (4) in the pipe is connected with one end of a pulling device which pulls back to enable the front end (2.3) of the claw to grasp the probe (5) of the smoke sensing device, and the other end of the pulling device is connected with a trigger (6) hinged on the handle (3);
the inner side surface of the front end (2.3) of each claw is fixedly provided with a friction block (7);
the pipe (1) is a circular pipe, the outer wall of the circular pipe is axially limited and is circumferentially matched with a sleeve (10) in a rotating mode, and the rear end of the outer metal elastic sheet (2.1) is fixed on the sleeve (10); the claw support that device was felt to handheld dismouting cigarette still include sliding fit cylindrical cam (11) in pipe (1), the centre bore slip cover of cylindrical cam (11) is put on dragging the device, there is the structure that makes both circumference spacing on the preceding terminal surface of cylindrical cam (11) and the rear end face of intraductal slider (4), the rear end face of cylindrical cam (11) offsets with the one end of a pressure spring (12), the other end axial of this pressure spring (12) is spacing on the inner wall of pipe (1), guide slot (13) on the outer circumference of cylindrical cam (11) cooperate with guide pin (14) fixed on the inner wall of pipe (1) in order to realize that cylindrical cam (11) axial displacement simultaneously circumference rotates and drives claw (2) through intraductal slider (4).
2. The jaw support for a hand-held removable smoke sensor according to claim 1, wherein: the friction block (7) is an arc-shaped block matched with the shape of the position where the probe (5) of the smoke sensing device is grabbed.
3. The jaw support for a hand-held removable smoke sensor according to claim 1, wherein: the pulling device adopts a pull rope (8); the axial middle part of the pipe (1) is provided with a hinge structure which can fold the pipe: the inner tube of the inner tube and the outer tube (9) which can rotate mutually is fixed with the rear end of the front tube, the outer tube of the inner tube and the outer tube (9) which can rotate mutually is fixed with the front end of the rear tube, and the other side of the tube (1) at the hinge structure is provided with a buckle for connecting or disconnecting the front tube and the rear tube at the side.
4. The jaw support for a hand-held removable smoke sensor according to claim 1, wherein: the number of the claws (2) is four and the claws are uniformly arranged along the periphery of the pipe (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811454481.8A CN109397193B (en) | 2018-11-30 | 2018-11-30 | Claw support for hand-held dismounting smoke sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811454481.8A CN109397193B (en) | 2018-11-30 | 2018-11-30 | Claw support for hand-held dismounting smoke sensor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109397193A CN109397193A (en) | 2019-03-01 |
| CN109397193B true CN109397193B (en) | 2023-09-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811454481.8A Active CN109397193B (en) | 2018-11-30 | 2018-11-30 | Claw support for hand-held dismounting smoke sensor |
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| Country | Link |
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| CN (1) | CN109397193B (en) |
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| CN205201435U (en) * | 2015-11-30 | 2016-05-04 | 山东华邦建设集团有限公司 | A dismouting device for cigarette sense detector |
| CN206123624U (en) * | 2016-11-01 | 2017-04-26 | 刘超越 | Electrodynamic type trades bulb machinery hand |
| CN206230506U (en) * | 2016-10-15 | 2017-06-09 | 中山市国丰光电科技有限公司 | A kind of LED illumination lamp special handling tool |
| CN207027392U (en) * | 2017-07-17 | 2018-02-23 | 叶烺晴 | A kind of dismantling device of screw-socket bulb |
| CN207289991U (en) * | 2017-08-18 | 2018-05-01 | 马肖月 | A kind of operation lever installed and replaced for light bulb |
| CN209095474U (en) * | 2018-11-30 | 2019-07-12 | 浙江省二建建设集团安装有限公司 | The pawl support of hand-held dismounting cigarette induction device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4904010A (en) * | 1988-08-23 | 1990-02-27 | Lacey Richard J | Gripping tool |
| JPH0890105A (en) * | 1994-09-14 | 1996-04-09 | Kanto Auto Works Ltd | Side pin pulling-out tool of press die |
| CN201209293Y (en) * | 2008-05-26 | 2009-03-18 | 浙江省二建建设集团有限公司 | Stretching and supporting anchor device at single filament stay stretching en under low-stretching control stress |
| CN101992463A (en) * | 2010-09-20 | 2011-03-30 | 李爱良 | Telescopic pickup clamp |
| CN202241118U (en) * | 2011-10-20 | 2012-05-30 | 上海大屯能源股份有限公司 | Internal expanding impulse type puller |
| CN103448019A (en) * | 2012-05-31 | 2013-12-18 | 海洋王照明科技股份有限公司 | Assembling and disassembling tool |
| CN205201435U (en) * | 2015-11-30 | 2016-05-04 | 山东华邦建设集团有限公司 | A dismouting device for cigarette sense detector |
| CN206230506U (en) * | 2016-10-15 | 2017-06-09 | 中山市国丰光电科技有限公司 | A kind of LED illumination lamp special handling tool |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN109397193A (en) | 2019-03-01 |
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