CN210039034U

CN210039034U - Photoelectric smoke fire detector

Info

Publication number: CN210039034U
Application number: CN201920952117.8U
Authority: CN
Inventors: 寇楠
Original assignee: Zhong Xing Construction Group Co Ltd
Current assignee: Zhong Xing Construction Group Co Ltd
Priority date: 2019-06-21
Filing date: 2019-06-21
Publication date: 2020-02-07
Anticipated expiration: 2029-06-21

Abstract

The utility model relates to a photoelectric smoke detector fire detector uses in the fire alarm equipment field, and its technical scheme main points are: the detector comprises a detector body, an intermediate column connected to the detector body and a sleeve fixed on a roof, wherein a plurality of bases are circumferentially arranged on the inner wall of the sleeve, each base is rotatably connected with a lifting rod, the bottom of the sleeve is rotatably connected with a driving disc through a central shaft, a plurality of arc plates circumferentially distributed along the axis of the driving disc are arranged on the periphery of the driving disc, the arc plates and the lifting rods are in one-to-one correspondence with one ends of the shape rods close to the bottom of the sleeve, the central shaft is connected with the lifting rods, one ends of the lifting rods penetrate out of the sleeve, through grooves for the movement of the lifting rods are formed in the sleeve, the intermediate column is positioned between the bases, when the end parts of the arc plates and the lifting rods are abutted against one end of the sleeve, the lifting rods are 21274, the other; the advantages are that: the detector body can be conveniently mounted or dismounted by an operator.

Description

Photoelectric smoke fire detector

Technical Field

The utility model belongs to the technical field of fire alarm equipment and specifically relates to a photoelectric smoke fire detector is related to.

Background

The photoelectric smoke-sensitive fire detector has practical significance for preventing family fire and reducing fire loss, more and more people begin to choose to install the smoke alarm at home to prevent the family fire, the working principle of the photoelectric smoke-sensitive fire detector is that a photosensitive electrode generates an electric signal under the irradiation of laser, and when the fire smoke shields the laser, the electrode loses the power and sends an alarm signal. However, the existing smoke alarm is complex in structure, not easy to be attached to a roof, and needs to be nailed, so that the attractiveness of the roof is affected, and the installation or the disassembly is inconvenient.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a photoelectric smoke fire detector, its advantage is: the detector body can be conveniently mounted or dismounted by an operator.

The above technical purpose of the present invention can be achieved by the following technical solutions: a photoelectric smoke fire detector comprises a detector body, a middle column connected with the detector body and a sleeve fixed on a roof, a plurality of bases are circumferentially arranged on the inner wall of the sleeve, each base is rotatably connected with a v-shaped rod 21274, the bottom of the sleeve is rotationally connected with a driving disk through a central shaft, a plurality of arc plates distributed along the axial line of the driving disk are arranged on the periphery of the driving disk, the arc plates correspond to one end of the v-shaped rod close to the bottom of the sleeve one by one, the central shaft is connected with a driving lever, one end of the deflector rod penetrates out of the sleeve, a through groove for the deflector rod to move is arranged on the sleeve, the intermediate column is positioned among the bases, when the end part of the arc plate is abutted against one end of the v-shaped rod close to the bottom of the sleeve, the other end of the v-shaped rod is abutted against the middle column, and the sleeve is provided with a fixing part for fixing the shifting rod.

By adopting the technical scheme, when the detector body is installed, an operator firstly inserts the middle column into the middle of each base, then rotates the poking rod to drive the driving disc to rotate, and the arc plate pushes the 21274; when the detector body needs to be disassembled, an operator removes the limit of the fixing piece on the shifting rod firstly, then the shifting rod is rotated, auxiliary tools are not needed, the detector is convenient and fast to install or disassemble, and time and labor are saved.

The utility model discloses further set up to: the fixing part comprises a clamping hook hinged on the side wall of the sleeve through a hinged shaft and a torsional spring sleeved on the hinged shaft.

By adopting the technical scheme, an operator rotates the clamping hook to hook the shifting lever, and the clamping hook keeps fixed through the elastic force of the torsion spring, so that the rotation of the shifting lever is limited, the structure is simple, and the operation is convenient.

The utility model discloses further set up to: a compression spring is connected between one end of the v-shaped rod close to the bottom of the sleeve and the inner wall of the sleeve, and when the compression spring is in a natural state, the length direction of the v-shaped rod is parallel to the axis of the sleeve.

By adopting the technical scheme, the status that the V-shaped rod is kept parallel to the axis of the sleeve by compressing the spring is reduced, and the situation that the V-shaped rod is blocked when an operator inserts the middle column into the middle of each base is reduced.

The utility model discloses further set up to: the end, close to the sleeve opening, of the v-shaped rod is connected with a gasket through a second countersunk head screw.

By adopting the technical scheme, an operator can adjust the outer diameter of a circle surrounded by the V-shaped rods by increasing or decreasing the number of the gaskets, so that the clamping and fixing device is suitable for clamping and fixing the intermediate columns with different specifications, and the flexibility is high.

The utility model discloses further set up to: the base is fixed on the sleeve through a first countersunk head screw.

Through adopting above-mentioned technical scheme, the base can be dismantled with the sleeve and be connected, and the operator of being convenient for dismantles, maintains the base.

The utility model discloses further set up to: the gasket side wall is bonded with an elastic pad which is arc-shaped and is matched with the outer contour of the middle column.

By adopting the technical scheme, through the elastic pad, the friction force between the rod and the middle column is increased, and the stability of fixing the detector body is improved.

The utility model discloses further set up to: and the gasket is provided with scale marks.

By adopting the technical scheme, the scale marks provide visual judgment for an operator to select the corresponding gasket according to the actual specification of the middle column.

The utility model discloses further set up to: the fixing piece comprises a clamping groove formed in one end of the wall of the through groove and elastic protrusions arranged on two opposite groove walls of the clamping groove, the shifting rod is hinged to the central shaft, and the rotating axis of the shifting rod is perpendicular to the axis of the central shaft.

By adopting the technical scheme, when an operator rotates the deflector rod to enable the arc plate to be abutted against the 21274, the end part of the shaped rod is abutted against the deflector rod, the deflector rod is rotated to enter the clamping groove, and the deflector rod is limited in the clamping groove through the elastic bulge, so that the operation is simple and convenient.

To sum up, the utility model discloses a beneficial technological effect does: when the detector body is mounted or dismounted, an operator can drive each arc plate to clamp or loosen only by rotating the deflector rod without the help of auxiliary tools, and the operation is simple and quick; the utility model has the advantages of making the shape pole adapt to the clamping work of the intermediate column of different specifications, nimble convenient through the quantity that increases and decreases the gasket.

Drawings

Fig. 1 is a schematic structural diagram of the first embodiment.

Fig. 2 is a schematic diagram of a structure for embodying the base and the v-shaped rod of the embodiment.

Fig. 3 is a schematic structural diagram of an embodiment for embodying a driving disc and an arc plate.

Fig. 4 is a schematic structural view for embodying the hinge shaft of the embodiment.

Fig. 5 is a schematic structural diagram of the second embodiment.

Fig. 6 is a schematic structural diagram of the embodiment for embodying the card slot.

In the figure, 1, a detector body; 11. a middle column; 12. a base; 13. a sleeve; 14. \ 21274; 15. a central shaft; 16. a drive disc; 161. an arc plate; 17. a deflector rod; 171. a through groove; 2. a fixing member; 21. a hook; 22. hinging a shaft; 23. a torsion spring; 24. a compression spring; 25. a gasket; 251. scale lines; 26. a second countersunk screw; 27. a first countersunk screw; 28. an elastic pad; 3. a card slot; 31. and (4) elastic bulges.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

The first embodiment is as follows: a photoelectric smoke fire detector is shown in figures 2 and 3 and comprises a detector body 1, a middle column 11 connected to the detector body 1 and a sleeve 13 fixed on a roof, wherein a tube opening of the sleeve 13 faces downwards, a plurality of bases 12 are arranged on the inner wall of the sleeve 13 and are circumferentially and equidistantly distributed along the axis of the sleeve, a v-shaped rod 14 and a v-shaped rod 21274are rotatably connected to each base 12, two ends of the v-shaped rod 14 are positioned outside the bases 12 and are v-shaped 21274, the rotating axis of the v-shaped rod 14 is vertical to the axis of the sleeve 13 and is v-shaped 21274, and a compression spring 24 is further connected between one end of the v-shaped rod 14 close to the bottom of the sleeve 13 and the inner wall of the sleeve 13; the bottom of the sleeve 13 is rotatably connected with a driving disc 16 through a central shaft 15, a plurality of arc plates 161 which are distributed along the axial line of the driving disc 16 at equal intervals are arranged on the periphery of the driving disc 16, the arc plates 161 are in one-to-one correspondence with the ends of the profile bars 14 close to the bottom of the sleeve 13, one end of each arc plate 161 close to the driving disc 16 is marked as an end A, and one end of each arc plate 161 which is gradually far away from the driving disc 16 is marked.

As shown in fig. 1 and 2, a shift lever 17 is vertically connected to the central shaft 15, one end of the shift lever 17 penetrates out of the sleeve 13, a through groove 171 for moving the shift lever 17 is formed in the sleeve 13, the middle column 11 is positioned between the bases 12, when the compression spring 24 is in a natural state, the length direction of the shape rod 14 is parallel to the axis of the sleeve 13, the shape rod 21274is parallel to the axis of the sleeve 13, one end of the shape rod 14 close to the bottom of the sleeve 13 is opposite to the end a of the arc plate 161, and at the moment, the other end of the shape rod 14 is separated from the middle column 11; when the end of the arc plate 161B is abutted against one end of the v-shaped rod 14 close to the bottom of the sleeve 13, the v-shaped rod 2127414 abuts against the middle column 11 at the other end, and the sleeve 13 is provided with a fixing piece 2 for fixing the shifting rod 17.

As shown in fig. 4, the fixing member 2 includes a hook 21 hinged on the side wall of the sleeve 13 through a hinge shaft 22, the hinge shaft 22 is sleeved with a torsion spring 23, and when the torsion spring 23 is in a natural state, the hook 21 is perpendicular to the through groove 171.

The action process is as follows: when the detector body 1 is installed, an operator firstly overcomes the elastic force of the torsion spring 23 to rotate the hook 21 upwards to be separated from the through groove 171, then the middle column 11 is inserted between the bases 12, then the deflector rod 17 is rotated, so that the driving disc 16 drives the arc plate 161 to rotate, and in the process that the arc plate 161 is turned from the end A to the end B, 21274, one end of the shape rod 14 close to the bottom of the sleeve 13 is pushed by the arc plate 161 to rotate towards the direction far away from the axis of the sleeve 13, so that the compression spring 24 is compressed to generate elastic deformation; when the other end of the v-shaped rod 14 approaches the middle column 11 and clamps the middle column 11, the shift lever 17 just abuts against one end of the groove wall of the through groove 171, at this time, the operator rotates the hook 21 to make the hook 21 and the shift lever 17 locked, at this time, the torsion spring 23 is in a twisted state, the hook 21 presses the shift lever 17 against the groove wall of the through groove 171 under the elastic force of the torsion spring 23 to limit the movement of the shift lever 17, and thus the detector body 1 is fixed.

When the detector body 1 is disassembled, an operator firstly rotates the hook 21 to separate from the shift lever 17 and then rotates the shift lever 17, the lever 21274, one end of the shaped rod 14 close to the bottom of the sleeve 13 automatically rotates towards the direction close to the axis of the sleeve 13 under the elastic thrust of the compression spring 24, so that the lever 21274is enabled, and the other end of the shaped rod 14 automatically separates from the middle column 11; an operator can adjust the degree of tightness of the v-shaped rod 14 to the middle column 11 by rotating the shift lever 17, so that the detector body 1 can be mounted or dismounted without the help of auxiliary tools, and the operation is convenient and quick.

As shown in fig. 2, the base 12 is fixed to the sleeve 13 by a first countersunk screw 27 to facilitate the exchange thereof by the operator.

As shown in fig. 2, the end of the v-shaped rod 14 near the cylindrical opening of the sleeve 13 is connected with a gasket 25 through a second countersunk screw 26, the gasket 25 is provided with scale marks 251 (as shown in fig. 3), the side wall of the gasket 25 is adhered with an elastic pad 28, and the elastic pad 28 is arc-shaped and is matched with the outer contour of the middle column 11. When actually assembling the probe body 1, an operator can select a proper gasket 25 according to the middle column 11 so far to ensure effective clamping of the v-shaped rod 14 to the middle column 11, and meanwhile, the arc-shaped elastic pad 28 is abutted against the middle column 11, so that the contact area and the friction force between the two are increased, and the connection of the probe body 1 is stabilized.

Example two: a photoelectric smoke fire detector is shown in figures 5 and 6, and is different from the first embodiment in that a fixing frame comprises a clamping groove 3 formed in one end of the groove wall of a through groove 171 along the length direction and elastic protrusions 31 arranged on two opposite groove walls of the clamping groove 3, the cross section of each elastic protrusion 31 is arc-shaped, a shifting rod 17 is hinged to a central shaft 15, the rotating axis of the shifting rod 17 is perpendicular to the axis of the central shaft 15, and when a sleeve 13 is vertically arranged, the notch of the clamping groove 3 faces upwards. When an operator rotates the driving lever 17 to drive the lifting lever 21274, the middle column 11 is clamped by the shape rod 14, the driving lever 17 is opposite to the notch of the clamping groove 3, the operator rotates the driving lever 17 downwards to enable the driving lever 17 to extrude the elastic bulge 31, the elastic bulge 31 moves to a position between the elastic bulge 31 and the bottom of the clamping groove 3 after elastic deformation occurs to the elastic bulge 31, and the driving lever 17 is limited by the elastic bulge 31 at the moment, so that the middle column 11 is kept in a clamped state, and the clamping device is simple, convenient, time-saving.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. A photoelectric smoke fire detector is characterized in that: the detector comprises a detector body (1), a middle column (11) connected to the detector body (1) and a sleeve (13) fixed on a roof, wherein a plurality of bases (12) are circumferentially arranged on the inner wall of the sleeve (13), each base (12) is rotatably connected with a v-21274and a shape rod (14), the bottom of the sleeve (13) is rotatably connected with a driving disc (16) through a central shaft (15), a plurality of arc plates (161) circumferentially distributed along the axis of the driving disc (16) are arranged on the periphery of the driving disc (16), the arc plates (161) correspond to the v-21274, one ends of the shape rods (14) close to the bottom of the sleeve (13) are in one-to-one correspondence, the central shaft (15) is connected with a shift lever (17), one end of the shift lever (17) penetrates out of the sleeve (13), a through groove (171) for the shift lever (17) to move is formed in the sleeve (13), and the middle column, when the end part of the arc plate (161) is abutted against one end of the v-21274-shaped rod (14) close to the bottom of the sleeve (13), the other end of the v-21274-shaped rod (14) is abutted against the middle column (11), and the sleeve (13) is provided with a fixing part (2) for fixing the shifting rod (17).

2. The photoelectric smoke fire detector of claim 1, wherein: the fixing piece (2) comprises a hook (21) hinged on the side wall of the sleeve (13) through a hinged shaft (22) and a torsion spring (23) sleeved on the hinged shaft (22).

3. The photoelectric smoke fire detector of claim 2, wherein: a compression spring (24) is connected between one end of the v-shaped rod (14) close to the bottom of the sleeve (13) and the inner wall of the sleeve (13), and when the compression spring (24) is in a natural state, the length direction of the v-shaped rod (14) is parallel to the axis of the sleeve (13).

4. The photoelectric smoke fire detector of claim 1, wherein: the end, close to the opening of the sleeve (13), of the v-shaped rod (14) is connected with a gasket (25) through a second countersunk head screw (26).

5. The photoelectric smoke fire detector of claim 4, wherein: the base (12) is fixed on the sleeve (13) by a first countersunk screw (27).

6. The photoelectric smoke fire detector of claim 5, wherein: an elastic pad (28) is bonded on the side wall of the gasket (25), and the elastic pad (28) is arc-shaped and is matched with the outer contour of the middle column (11).

7. The photoelectric smoke fire detector of claim 6, wherein: the gaskets (25) are provided with scale marks (251).

8. The photoelectric smoke fire detector of claim 1, wherein: the fixing piece (2) comprises a clamping groove (3) formed in one end of the groove wall of the through groove (171) and elastic protrusions (31) arranged on two opposite groove walls of the clamping groove (3), the shifting rod (17) is hinged to the central shaft (15), and the rotating axis of the shifting rod (17) is perpendicular to the axis of the central shaft (15).