CN223595749U - An LED floodlight and its mounting structure - Google Patents

Abstract

The utility model belongs to the field of illumination, in particular to an LED floodlight and an installation structure, aiming at the problems that the existing LED floodlight is complex in installation structure, high in installation cost and low in efficiency, and a reflector is single in illumination mode and limited in application range, the utility model provides a scheme which comprises a shell, a floodlight reflector, a spotlight reflector and a fixing pin, wherein the floodlight reflector and the spotlight reflector are respectively and slidably connected on the fixing pins at different positions of the shell, an adjusting mechanism for adjusting the lamplight direction is arranged in the shell, and a fixing mechanism I and a fixing mechanism II are arranged on one side of the shell.

Description

LED floodlight and mounting structure

Technical Field

The utility model relates to the technical field of illumination, in particular to an LED floodlight and an installation structure.

Background

In the field of lighting technology, an LED floodlight is widely used as a high-efficiency and energy-saving lighting device for various indoor and outdoor lighting scenes, and a conventional LED floodlight generally comprises a housing, a reflector, an LED light source and other components, and is installed at a designated position through a fixed structure to provide directional or floodlight illumination.

However, the LED floodlight in the prior art has the following defects that firstly, the installation structure of the existing LED floodlight is mostly complex, a plurality of installation steps and special tools are usually required to complete the installation, the installation cost is increased, the installation efficiency is reduced, in addition, the difficulty of later maintenance and replacement is increased due to the complex installation structure, inconvenience is brought to a user, and secondly, the reflector of the existing LED floodlight can only provide a single illumination mode, namely floodlight illumination or spotlight illumination, the illumination mode cannot be switched rapidly according to actual requirements, the application range of the LED floodlight is limited, and the illumination requirements under different scenes cannot be met, so that the LED floodlight and the installation structure are provided.

Disclosure of utility model

The utility model aims to solve the problems that in the prior art, the installation structure of an LED floodlight is mostly complex, a plurality of installation steps and special tools are usually required to complete the installation, the installation cost is increased, the installation efficiency is reduced, in addition, the difficulty of later maintenance and replacement is increased due to the complex installation structure, inconvenience is brought to a user, and secondly, the reflector of the existing LED floodlight can only provide a single illumination mode, namely floodlight or spotlight, the illumination mode cannot be switched rapidly according to actual requirements, the application range of the LED floodlight is limited, and the illumination requirements under different scenes cannot be met.

In order to achieve the above purpose, the present utility model adopts the following technical scheme:

The utility model provides a LED floodlight, includes shell, floodlight reflector and spotlight reflector, the logical groove that link up has all been seted up to one side and the bottom of shell, logical inslot fixedly connected with glass cover, the equal fixedly connected with a plurality of fixed pins of one side inner wall and the bottom inner wall of logical groove have been seted up to the shell, floodlight reflector sliding connection is located the circumference outer wall of a plurality of fixed pins on the inner wall of shell bottom, spotlight reflector sliding connection is located the circumference outer wall of a plurality of fixed pins on one side inner wall of shell, fixedly connected with a plurality of first springs between floodlight reflector and the spotlight reflector respectively with the inner wall of corresponding shell, first fixed pin's circumference outer wall has been seted up to one side of the top of shell, the equal fixedly connected with of both sides inner wall of shell rotates the seat, two rotate between the seat and be provided with same adjustment mechanism that is used for adjusting the light orientation.

In one possible design, the adjusting mechanism comprises a rotating shaft, the rotating shaft is rotationally connected between two rotating seats, one side of the rotating shaft is provided with a first sliding groove, a sliding rod is connected in the first sliding groove in a sliding mode, the sliding rod penetrates through one side of the shell, one end of the sliding rod, located on the outer side of the shell, is fixedly connected with a knob, and the other end of the sliding rod is fixedly connected with a second spring, located between the other end of the sliding rod and one side inner wall of the first sliding groove.

In a possible design, three planes have been seted up to the circumference outer wall of pivot, one of them plane fixedly connected with LED lamp, and is three two mounting grooves have all been seted up to the plane, three spacing groove has been seted up to one side of spout one, and a plurality of the mounting groove all is linked together with corresponding spacing groove and spout one, sliding connection has the cambered surface to support the piece in the mounting groove, the cambered surface supports piece and pivot looks adaptation, the circumference outer wall fixedly connected with of slide bar a plurality of trapezoidal stoppers, trapezoidal stopper sliding connection is in the spacing inslot that corresponds, cambered surface supports piece and trapezoidal stopper looks adaptation, floodlight reflector and spotlight reflector contact with one of them plane respectively, the LED lamp is located floodlight reflector inside.

The utility model provides a mounting structure, uses with the cooperation of the LED floodlight of arbitrary one above-mentioned, including fixed establishment first and fixed establishment second, fixed establishment first and fixed establishment second all set up in one side of shell, fixed establishment second includes the fixing base, the fixed slot has been seted up to one side of fixing base, draw-in groove third has all been seted up to the both sides inner wall of fixed slot, the equal fixedly connected with conductive metal plate second in top and bottom of fixed slot one side inner wall, the recess has been seted up on top one side of fixing base, sliding connection has U-shaped buckle in the recess, fixedly connected with same extension spring between the bottom of U-shaped buckle and the bottom inner wall of recess, U-shaped buckle block is in draw-in groove first, the equal fixedly connected with mount pad in both sides of fixing base.

In one possible design, the first fixing mechanism comprises a main body, the main body is fixedly connected to one side of the shell, the main body is located in the fixing groove, a second sliding groove is formed in one side, far away from the shell, of the main body, a third sliding groove is formed in the inner walls of two sides of the second sliding groove, and a clamping mechanism used for clamping and fixing the main body in the fixing groove is arranged in the second sliding groove.

In a possible design, the clamping mechanism comprises two supporting plates, the two supporting plates are all in sliding connection in a second sliding groove, two connecting rods are fixedly connected to one side, close to each other, of the supporting plates, one side of the supporting plates is fixedly connected with a third spring between one side inner wall of the second sliding groove and one side inner wall of the second sliding groove, two clamping blocks are fixedly connected to the other side, close to the third spring, of the supporting plates, two sliding blocks are connected to the third sliding groove in a sliding way, two triangular blocks are fixedly connected to one side, far away from each other, of the sliding blocks, the triangular blocks are clamped in corresponding clamping grooves III, clamping grooves II are formed in one side, close to each other, of the two sliding blocks, of the clamping grooves II are matched with the clamping blocks, one side, close to each other, of the two sliding blocks, of the four springs are located between the two connecting rods, and one side, close to the fixing seat, of the main body, is fixedly connected with a first conductive metal plate.

Working principle: in the application, when people need to install the floodlight rapidly, only the U-shaped buckle is required to be lifted, then the main body is inserted into the fixing groove at one side of the fixing seat, when the floodlight is inserted to a certain extent, the support plate at the outer side is contacted with the inner wall at one side of the fixing groove, along with the continuous insertion, the inner wall at one side of the fixing groove can push the support plate at the outer side to move inwards, then the support plate at the outer side pushes the support plate at the inner side to move inwards through the connecting rod, and further the clamping block is driven to move until the clamping block is separated from the clamping groove II, then the sliding block at the two sides can push the sliding block at the fourth side to move outwards, then the sliding block pushes the triangular block to enter the clamping groove III, then the inclined surface of the triangular block is pushed by the fourth spring to be tightly contacted with one side of the clamping groove III so as to complete primary fixing, then the U-shaped buckle is released, the U-shaped buckle is clamped into the clamping groove I under the pulling of the tension spring to complete secondary fixing, at this time, the two conductive metal plates II which are respectively connected with the anode and the cathode of the power supply through the electric wires are contacted with the two conductive metal plates I which are respectively connected with the anode and the cathode of the LED lamp through the electric wires, so that the power supply can supply power to the LED lamp, when the floodlight is to be taken away, the U-shaped buckle is lifted upwards to separate from the clamping of the clamping groove I, then the floodlight is pulled out by force, in the pulling process, the clamping groove T pushes the triangular block to move inwards through the inclined plane of the triangular block, and then the two sliding blocks are driven to move inwards until the spring III pushes the inner supporting plate and drives the two clamping blocks to be clamped into the two clamping grooves II respectively under the action of elasticity, when people need to change the illumination range, the knob is moved inwards firstly, then the knob drives the sliding rod to move inwards and then pushes the cambered surface supporting block to move outwards through the inclined plane of the trapezoid limiting block, then the cambered surface support the piece and can promote floodlight reflector and spotlight reflector outwards remove along the fixed pin to let the LED lamp break away from one of them reflector, then drive the slide bar through rotating the knob and then drive the pivot through trapezoidal stopper and spacing groove and rotate 90, then loosen the knob, then the second spring can promote the slide bar and then drive knob and trapezoidal stopper and reset, then floodlight reflector and spotlight reflector can inwards move and with the plane contact that pivot circumference outer wall was offered under the elasticity effect of first spring, promote the cambered surface simultaneously and support the piece and reset, and let the LED lamp block enter another reflector can accomplish the adjustment of illumination scope.

The LED floodlight has the beneficial effects that in the LED floodlight and the mounting structure, the rapid switching of the illumination mode of the LED floodlight can be realized through the components such as the shell, the floodlight reflecting cover, the spotlight reflecting cover and the adjusting mechanism, and particularly, the LED lamp can be switched between the floodlight reflecting cover and the spotlight reflecting cover along with the rotation of the rotating shaft, so that the illumination requirements under different scenes are met, the design simplifies the operation flow, improves the flexibility and the application range of the LED floodlight, and can realize the switching of the illumination mode without replacing the whole lamp;

According to the LED floodlight and the mounting structure, the mounting and dismounting processes of the LED floodlight can be simplified through the first fixing mechanism and the second fixing mechanism, and a user only needs to insert the main body into the fixing groove and fix the main body through the clamping mechanism and the U-shaped buckle, so that a special tool is not required, the mounting cost is reduced, the mounting efficiency is improved, and meanwhile, the simple mounting structure is convenient for later maintenance and replacement, and brings convenience to the user;

According to the LED floodlight and the mounting structure, the first conductive metal plate and the second conductive metal plate are arranged, so that the LED floodlight can be conveniently powered, and particularly, after the first fixing mechanism is fixed with the second fixing mechanism, the first conductive metal plate and the second conductive metal plate are contacted, so that a power supply is connected with the LED lamp through a wire, stable power supply is provided for the LED lamp, the circuit connection process is simplified, the reliability and the safety of circuit connection are improved, and powerful guarantee is provided for normal use of the LED floodlight;

According to the utility model, the rapid switching of the illumination mode of the LED floodlight can be realized, in particular, the LED lamp can be switched between the floodlight reflecting cover and the spotlight reflecting cover along with the rotation of the rotating shaft, so that the illumination requirements under different scenes are met, the design simplifies the operation flow, improves the flexibility and the application range of the LED floodlight, the switching of the illumination mode can be realized without replacing the whole lamp, the mounting and dismounting processes of the LED floodlight can be simplified, a user only needs to insert the main body into the fixed groove, and the fixing can be finished through the clamping mechanism and the U-shaped buckle, a special tool is not required, the mounting cost is reduced, the mounting efficiency is improved, meanwhile, the simple mounting structure is convenient for later maintenance and replacement, convenience is brought to the user, and the convenient power supply of the LED floodlight can be realized, in particular, after the first fixing mechanism is fixed with the second fixing mechanism, the first conductive metal plate is contacted with the second conductive metal plate, so that a power supply is stably provided for the LED lamp through a wire, the circuit connection process is simplified, the reliability and the safety of the circuit connection are improved, and the normal power is provided for the LED floodlight.

Drawings

Fig. 1 is a schematic diagram of the overall structure of an LED floodlight and a mounting structure according to the present utility model;

FIG. 2 is a bottom view of the whole structure of an LED floodlight and a mounting structure according to the present utility model;

Fig. 3 is a schematic diagram illustrating an internal structure of an LED floodlight and a mounting structure according to the present utility model;

FIG. 4 is an enlarged view of portion A of FIG. 3;

FIG. 5 is an exploded view of the internal structure of an LED floodlight according to the present utility model;

FIG. 6 is a cross-sectional view of an internal structure of an adjusting mechanism in an LED floodlight according to the present utility model;

FIG. 7 is a cross-sectional view showing the internal structure of a mounting structure according to the present utility model;

Fig. 8 is an exploded view of the internal structure of the first fixing mechanism in the mounting structure according to the present utility model.

1, A shell, 11, a fixed pin, 12, a first spring, 13, a rotating seat, 14, a clamping groove I, 2, a glass cover, 3, a floodlight reflector, 4, a light reflector, 6, an adjusting mechanism, 61, a rotating shaft, 62, a sliding rod, 63, a knob, 64, a mounting groove, 65, a cambered surface abutting block, 66, a limiting groove, 67, a trapezoid limiting block, 68, a second spring, 69, a first sliding groove, 7, an LED lamp, 8, a first fixing mechanism, 81, a main body, 82, a first conductive metal plate, 83, a second sliding groove, 84, a third sliding groove, 85, a supporting plate, 86, a connecting rod, 87, a third spring, 88, a clamping block, 89, a sliding block, 810, a triangular block, 811, a second clamping groove, 812, a fourth spring, 9, a second fixing mechanism, 91, a fixed seat, 92, a mounting seat, 93, a third clamping groove, 94, a second conductive metal plate, 95, a U-shaped buckle, 96, a tension spring, 97 and a fixing groove.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments.

Embodiment 1 referring to fig. 1-6, a floodlight comprises a housing 1, a floodlight reflector 3 and a spotlight reflector 4. Through grooves are formed in one side and the bottom of the shell 1, and a glass cover 2 is fixedly connected in the through grooves so as to protect the LED lamp 7 and the reflecting cover inside from the external environment. A plurality of fixing pins 11 are fixedly connected to the inner wall of one side of the through groove of the shell 1 and the inner wall of the bottom. The floodlight reflector 3 is slidably connected to the circumferential outer walls of the plurality of fixing pins 11 located on the inner wall of the bottom of the housing 1, and the spotlight reflector 4 is slidably connected to the circumferential outer walls of the plurality of fixing pins 11 located on the inner wall of one side of the housing 1. The design is that the floodlight reflector 3 and the spotlight reflector 4 can be matched only by adjusting the position of the LED lamp 7.

A plurality of first springs 12 are fixedly connected between the floodlight reflecting shade 3 and the spotlight reflecting shade 4 and the inner wall of the corresponding shell 1 respectively, and the first springs 12 are sleeved on the circumferential outer wall of the corresponding fixing pin 11. The design enables the floodlight reflector 3 and the spotlight reflector 4 to keep a certain position when not subjected to external force, and simultaneously to slide along the fixing pin 11 when subjected to external force.

A first clamping groove 14 is formed in one side of the top of the shell 1 and is used for being clamped with a U-shaped clamping buckle 95 in the mounting structure. The inner walls of the two sides of the shell 1 are fixedly connected with rotating seats 13, and the same adjusting mechanism 6 for adjusting the light direction is rotatably arranged between the two rotating seats 13.

The adjusting mechanism 6 includes a rotation shaft 61, and the rotation shaft 61 is rotatably connected between the two rotation seats 13. One side of the rotating shaft 61 is provided with a first sliding groove 69, a sliding rod 62 is connected in the sliding groove 69 in a sliding way, and the sliding rod 62 penetrates through one side of the shell 1. One end of the slide bar 62 located outside the housing 1 is fixedly connected with a knob 63 for user operation. The same second spring 68 is fixedly connected between the other end of the sliding rod 62 and the inner wall of one side of the first sliding groove 69, and is used for resetting the sliding rod 62 when no external force acts.

Three planes are arranged on the circumferential outer wall of the rotating shaft 61, and one plane is fixedly connected with the LED lamp 7. Two mounting grooves 64 are formed in the three planes, and three limiting grooves 66 are formed in one side of the first sliding groove 69. The plurality of mounting slots 64 are each in communication with a corresponding one of the limiting slots 66 and the slide slot one 69. The installation groove 64 is slidably connected with a cambered surface supporting block 65, and the cambered surface supporting block 65 is matched with the rotating shaft 61 and is used for pushing the floodlight reflecting cover 3 and the spotlight reflecting cover 4 to move when the rotating shaft 61 rotates.

The circumference outer wall of slide bar 62 fixedly connected with a plurality of trapezoidal stopper 67, trapezoidal stopper 67 sliding connection is in corresponding spacing groove 66. The cambered surface abutting block 65 is matched with the trapezoid limiting block 67 and is used for pushing the cambered surface abutting block 65 to move when the sliding rod 62 moves. The floodlight reflecting cover 3 and the spotlight reflecting cover 4 are respectively contacted with one plane, and the LED lamp 7 is positioned inside the floodlight reflecting cover 3.

Referring to fig. 1-8, a mounting structure includes a first securing mechanism 8 and a second securing mechanism 9. The first fixing mechanism 8 and the second fixing mechanism 9 are arranged on one side of the shell 1.

The second fixing mechanism 9 includes a fixing seat 91, and a fixing slot 97 is formed in one side of the fixing seat 91. The inner walls of both sides of the fixing groove 97 are provided with a third clamping groove 93 for clamping with the clamping mechanism in the first fixing mechanism 8. The top and the bottom of the inner wall of one side of the fixed groove 97 are fixedly connected with a second conductive metal plate 94 which is used for being connected with a power line of an external power supply.

A groove is formed in one side of the top of the fixing seat 91, and a U-shaped buckle 95 is connected in the groove in a sliding manner. The same tension spring 96 is fixedly connected between the bottom of the U-shaped buckle 95 and the bottom inner wall of the groove and is used for enabling the U-shaped buckle 95 to reset and be clamped in the clamping groove I14 when the U-shaped buckle is not acted by external force. The U-shaped buckle 95 is clamped in the first clamping groove 14 and used for fixing the LED floodlight on the second fixing mechanism 9.

The first fixing mechanism 8 includes a main body 81, and the main body 81 is fixedly connected to one side of the housing 1 and is located in the fixing groove 97. A second sliding groove 83 is formed in one side, away from the shell 1, of the main body 81, and a third sliding groove 84 is formed in inner walls of two sides of the second sliding groove 83.

The second chute 83 is provided therein with an engagement mechanism for engaging and fixing the main body 81 in the fixing groove 97. The clamping mechanism comprises two support plates 85, and the two support plates 85 are both connected in the second chute 83 in a sliding manner. One side of the two support plates 85, which are close to each other, is fixedly connected with two connecting rods 86, and one spring III 87 is fixedly connected between one side of one support plate 85 and the inner wall of one side of the second chute 83 and is used for resetting the support plate 85 when no external force acts on the support plate.

The other side of the support plate 85 connected with the spring III 87 is fixedly connected with two clamping blocks 88. Sliding connection has slider 89 in the third 84 of spout, and the equal fixedly connected with triangle piece 810 of one side that two sliders 89 keep away from each other, triangle piece 810 block is in the draw-in groove third 93 that corresponds for preliminarily fix main part 81 in fixed slot 97.

A second clamping groove 811 is formed in one side of the slider 89, and the second clamping groove 811 is matched with the clamping block 88, so that the clamping block 88 is clamped into the second clamping groove 811 to fix the slider 89 when the slider 89 moves inwards. One side of the two sliding blocks 89, which is close to each other, is fixedly connected with the same spring IV 812, and the spring IV 812 is positioned between the two connecting rods 86 and is used for pushing the two sliding blocks 89 to move outwards when no external force acts on the sliding blocks.

The top and the bottom of one side of the main body 81 close to the fixing seat 91 are fixedly connected with a first conductive metal plate 82, and the first conductive metal plate is used for contacting with a second conductive metal plate 94 and supplying power to the LED lamp 7.

The application can be used in the field of lighting, but also in other fields suitable for the application.

Embodiment 2 referring to fig. 1-8, an improvement is made on the first embodiment in that the mounting structure is applied to the field of illumination, and the mounting seats 92 are fixedly connected to both sides of the fixing seat 91, so as to mount the second fixing mechanism 9 on a wall or other fixed object.

The foregoing is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art, who is within the scope of the present utility model, should make equivalent substitutions or modifications according to the technical scheme of the present utility model and the inventive concept thereof, and should be covered by the scope of the present utility model.

Claims (6)

1. The utility model provides a LED floodlight, includes shell (1), floodlight reflector (3) and spotlight reflector (4), its characterized in that, the logical groove that link up has all been seted up to one side and the bottom of shell (1), logical inslot fixedly connected with glass cover (2), a plurality of fixed pins (11) of equal fixedly connected with of one side inner wall and the bottom inner wall of logical groove have been seted up to shell (1), floodlight reflector (3) sliding connection is being located the circumference outer wall of a plurality of fixed pins (11) on shell (1) bottom inner wall, spotlight reflector (4) sliding connection is being located the circumference outer wall of a plurality of fixed pins (11) on shell (1) one side inner wall, floodlight reflector (3) and spotlight reflector (4) respectively with the inner wall of corresponding shell (1) between fixedly connected with a plurality of first spring (12), first spring (12) cover is established the circumference outer wall of fixed pin (11) that corresponds, draw-in groove (14) have been seted up on one side of the top of shell (1), both sides inner wall fixedly connected with of shell (1) rotates two and is used for adjusting between lamp light seat (13) and two rotation seat (13) are used for same rotation adjusting mechanism.

2. An LED floodlight according to claim 1, characterized in that the adjusting mechanism (6) comprises a rotating shaft (61), the rotating shaft (61) is rotatably connected between two rotating seats (13), a first sliding chute (69) is formed in one side of the rotating shaft (61), a sliding rod (62) is slidably connected in the first sliding chute (69), the sliding rod (62) penetrates through one side of the housing (1), one end of the sliding rod (62) located on the outer side of the housing (1) is fixedly connected with a knob (63), and the other end of the sliding rod (62) is fixedly connected with a second spring (68) between the other end of the sliding rod (62) and an inner wall of one side of the first sliding chute (69).

3. The LED floodlight according to claim 2, wherein three planes are formed in the circumferential outer wall of the rotating shaft (61), one plane is fixedly connected with an LED lamp (7), two mounting grooves (64) are formed in the three planes, three limiting grooves (66) are formed in one side of the first sliding groove (69), the mounting grooves (64) are communicated with the corresponding limiting grooves (66) and the first sliding groove (69), an arc-surface abutting block (65) is connected in the mounting grooves (64) in a sliding mode, the arc-surface abutting block (65) is matched with the rotating shaft (61), a plurality of trapezoid limiting blocks (67) are fixedly connected in the circumferential outer wall of the sliding rod (62), the trapezoid limiting blocks (67) are slidably connected in the corresponding limiting grooves (66), the arc-surface abutting block (65) is matched with the trapezoid limiting blocks (67), the floodlight reflecting cover (3) and the light reflecting cover (4) are respectively contacted with one plane, and the LED lamp (7) is located inside the floodlight reflecting cover (3).

4. Mounting structure, use with the cooperation of an LED floodlight of arbitrary one of claims 1-3, including fixed establishment first (8) and fixed establishment second (9), its characterized in that, fixed establishment first (8) and fixed establishment second (9) all set up in one side of shell (1), fixed establishment second (9) include fixing base (91), fixed slot (97) have been seted up to one side of fixing base (91), draw-in groove third (93) have all been seted up to the both sides inner wall of fixed slot (97), the top and the equal fixedly connected with conductive metal plate second (94) of bottom of fixed slot (97) one side inner wall, the recess has been seted up on one side of the top of fixing base (91), sliding connection has U-shaped buckle (95) in the recess, fixedly connected with same extension spring (96) between the bottom of U-shaped buckle (95) and the bottom inner wall of recess, U-shaped buckle (95) block in draw-in groove first (14), all fixedly connected with mount pad (92) in both sides of fixing base (91).

5. The mounting structure according to claim 4, wherein the first fixing mechanism (8) comprises a main body (81), the main body (81) is fixedly connected to one side of the housing (1), the main body (81) is located in the fixing groove (97), a second sliding groove (83) is formed in one side, far away from the housing (1), of the main body (81), third sliding grooves (84) are formed in inner walls of two sides of the second sliding groove (83), and a clamping mechanism for clamping and fixing the main body (81) in the fixing groove (97) is arranged in the second sliding groove (83).

6. The mounting structure according to claim 5, wherein the clamping mechanism comprises two support plates (85), the two support plates (85) are all slidably connected in a second chute (83), two connecting rods (86) are fixedly connected to one side, close to each other, of the two support plates (85), one side of the support plates (85) is fixedly connected with a third spring (87) with one side inner wall of the second chute (83), two clamping blocks (88) are fixedly connected to the other side, close to each other, of the support plates (85) of the third spring (87), a sliding block (89) is slidably connected to the third chute (84), triangular blocks (810) are fixedly connected to one side, far away from each other, of the two sliding blocks (89) and are clamped in corresponding third clamping grooves (93), second clamping grooves (811) are formed in one side of the sliding blocks (89), two sides, close to each other, of the two sliding blocks (89) are fixedly connected with the same fourth spring (812), and the four sliding blocks (86) are located on one side, close to each other, of the two sliding blocks (811) are located on one side, close to the first connecting rods (82) and the first connecting rods (82) are fixedly connected to each other.