CN220019797U - LED lamp circuit board aging test device - Google Patents

Abstract

The utility model relates to the technical field of LED lamp circuit boards, in particular to an LED lamp circuit board aging testing device which comprises a supporting frame, wherein the surfaces of a first movable frame, a second movable frame and the supporting frame are provided with position adjusting mechanisms, the surfaces of a wire body and a wiring port are provided with anti-loosening mechanisms, and the surfaces of the supporting frame and a connecting wire are provided with wiring anti-winding mechanisms. The utility model not only avoids the phenomenon that connecting wires are wound together in the use process of the testing device, and can adjust the positions of the first movable frame and the second movable frame according to the use requirement of a user when the testing device is used, so that the testing device is more convenient to use and can meet the use requirement of the user, but also can avoid the phenomenon that the testing is inaccurate due to loose wire bodies when the testing device is used, avoid the phenomenon that the wire bodies are in poor contact in the use process of the testing device, and ensure the accuracy when the testing is performed.

Description

LED lamp circuit board aging test device

Technical Field

The utility model relates to the technical field of LED lamp circuit boards, in particular to an LED lamp circuit board aging test device.

Background

The LED lamp is a lamp which uses a light emitting diode as a light source, has the advantages of energy saving, long service life, environmental protection, vibration prevention and the like, and the lamp panel of the LED lamp needs to be subjected to aging test after production is completed, so that whether the aging resistance of the LED lamp panel is qualified is detected, and the LED lamp circuit board aging test device is needed.

First, the connection lines are easily entangled during use, resulting in inconvenience to the user in handling the connection lines. The existing testing device often cannot be used for wiring and winding prevention of the connecting wires, so that the phenomenon that the connecting wires are wound together in the using process of the testing device is easy to occur; secondly, because the use requirements of users are different, when the circuit board is tested, the positions of the first movable frame and the second movable frame of the testing device are required to be adjusted, however, the existing testing device cannot be used for adjusting the positions of the first movable frame and the second movable frame of the testing device, so that the positions of the first movable frame and the second movable frame cannot be adjusted according to the use requirements of the users when the testing device is used, the testing device is inconvenient to use, and the use requirements of the users cannot be met; thirdly, the line body is easy to loose after being inserted into the wiring port, the existing testing device cannot prevent the line body from loosening from the inside of the wiring port when in use, so that the phenomenon that the testing is inaccurate due to the fact that the line body is loose is easy to occur when the testing device is used, and the accuracy in testing cannot be guaranteed.

Disclosure of Invention

The utility model aims to provide an LED lamp circuit board aging testing device, which solves the problems that the testing device in the prior art cannot be used for wiring and winding prevention of a connecting wire, cannot be used for adjusting the positions of a first movable frame and a second movable frame of the testing device, and cannot be used for preventing a wire body from loosening from the inside of a wiring port.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a LED lamp circuit board aging testing device, includes the support frame, the surface mounting of support frame has the power supply box, the surface of support frame is provided with first movable frame, the surface mounting of support frame is provided with the second movable frame, the surface mounting of support frame has the detection platform, the detection platform is located the top of second movable frame, the splint are all installed to the surface of detection platform, second movable frame and first movable frame, the surface mounting of splint top position department has the testboard, the equidistant connector is all installed to the surface of detection platform, second movable frame and first movable frame, the connecting wire is all installed on the surface of power supply box, the one end of connecting wire runs through the detection platform respectively, the second movable frame is linked together with the surface of splint with first movable frame, the surface of connector all is provided with the wiring mouth, the surface of testboard top position department all is provided with equidistant circuit board body, the surface mounting of circuit board body has the line body, the one end of line body is connected with the surface mounting of connector, the surface mounting of first movable frame, the guide ring has the guide ring, the fixture is provided with the wire guide ring, the fixture is all with the surface mounting, the guide ring, the fixture is provided with the guide ring, the fixture is equipped with the guide pin, the fixture is equipped with the fixture, the fixture is all with the surface winding, and has the fixture.

Preferably, the surface mounting of power supply box has three-layer power switch, the surface mounting of power supply box has two-layer power switch, the surface mounting of power supply box has one-layer power switch, the second removes the frame and is located first removal frame top.

Preferably, the adjusting position group is arranged on the surfaces of the second movable frame, the first movable frame and the supporting frame, the adjusting position group is composed of a mounting block and fastening bolts, the surfaces of the two ends of the first movable frame and the second movable frame are provided with guide blocks, the inner walls of the supporting frame are provided with guide grooves, and the guide grooves are in sliding fit with the surfaces of the guide blocks.

Preferably, the surface mounting at guide block bottom position has the installation piece, the surface of installation piece is laminated mutually with the inner wall of guide way, the surface threaded connection of installation piece has fastening bolt, fastening bolt's one end runs through the installation piece and with the inner wall screw thread fastening of guide way.

Preferably, the surface threaded connection of wiring mouth has the fastening double-screw bolt that is used for fixing the surface of wiring mouth and connector, the one end of fastening double-screw bolt runs through the wiring mouth and with the surface threaded fastening of connector, the surface mounting of wiring mouth has the solid fixed ring.

Preferably, the inner walls of the fixing ring and the wiring port are provided with clamping rings for clamping and protecting the surface of the wire body, the surface of the clamping rings is attached to the surface of the wire body, the inner walls of the fixing ring and the wiring port are provided with equidistant compression springs, and one ends of the compression springs are fixed with the surface of the clamping rings.

Preferably, the surface of support frame all is provided with the cloth coil, the inner wall parcel of cloth coil has the guard ring that is used for protecting the surface of connecting wire, the surface of guard ring is laminated with the surface of connecting wire mutually.

Preferably, the surface mounting of cloth coil has the connecting block, the surface threaded connection of connecting block has the fastening screw that is used for fixing the surface of cloth coil and support frame, the one end of fastening screw runs through the connecting block and with the surface threaded fastening of support frame.

Compared with the prior art, the utility model has the beneficial effects that: the LED lamp circuit board aging testing device not only avoids the phenomenon that connecting wires are wound together in the using process of the testing device, but also can adjust the positions of the first movable frame and the second movable frame according to the use requirement of a user when the testing device is used, so that the testing device is more convenient to use, the use requirement of the user can be met, the phenomenon that the testing is inaccurate due to loose wire bodies can be avoided when the testing device is used, the phenomenon that the wire bodies are in poor contact in the using process of the testing device is avoided, and the accuracy in the testing process is ensured;

1. through being provided with wiring antiwind mechanism, the user is connected the connecting wire respectively with splint, at this moment, the user places the cloth coil on the surface of cloth coil, make the cloth coil drive the connecting block move to laminating mutually with the surface of support frame, afterwards, the fastening screw on connecting block surface is screwed up to the user, install the connecting block on the surface of support frame under the effect of fastening screw, thereby install the cloth coil on the surface of support frame, at this moment, protect the surface of connecting wire under the effect of cloth coil inner wall guard ring, avoid wearing and tearing of connecting wire, wire the connecting wire under the effect of cloth coil, avoid the phenomenon that the connecting wire twines to appear, test device has realized the wiring antiwind function of connecting wire, thereby the phenomenon that the connecting wire twines together has been avoided in the testing device use;

2. through being provided with the adjustment position mechanism, the user unscrews the fastening bolt on installation piece surface as required, and the user respectively pulls first movable rack and second movable rack for first movable rack and second movable rack drive the guide block and slide in the inside of guide way, and when first movable rack and second movable rack moved to required position department, the user screwed up the fastening bolt on installation piece surface, installs the installation piece at the inner wall of guide way under the effect of fastening bolt, thereby installs first movable rack and second movable rack in required position department, realized the function of testing arrangement adjustment first movable rack and second movable rack's position, thereby can adjust the position of first movable rack and second movable rack according to user's use needs when making testing arrangement use, make testing arrangement use more convenient, more can satisfy user's user demand;

3. through being provided with locking mechanism, install the surface at the connector with the wiring mouth under the effect of fastening double-screw bolt, make the one end of line body insert the inside to the wiring mouth, at this moment, press from both sides tightly the processing to the line body under the effect of solid fixed ring, it moves to drive the clamping ring under the elasticity effect of gu fixed ring and line body inner wall sticiss spring, make the clamping ring move to laminating mutually with the surface of line body, carry out the centre gripping protection to the line body under the effect of sticiss spring and clamping ring, realize testing arrangement and prevent that the line body from appearing not hard up phenomenon from the inside of wiring mouth, thereby can avoid appearing the phenomenon that leads to the test inaccurate because of the line body is not hard up when making testing arrangement use, the phenomenon that the line body contact is bad appears in the testing arrangement use, the accuracy when having guaranteed the test.

Drawings

FIG. 1 is a schematic three-dimensional perspective view of the present utility model;

FIG. 2 is a schematic view of a front cross-sectional structure of the present utility model;

FIG. 3 is an enlarged schematic side view of the present utility model;

FIG. 4 is an enlarged schematic view of the position adjustment mechanism of FIG. 2 in accordance with the present utility model;

FIG. 5 is an enlarged schematic view of the wiring anti-winding mechanism of FIG. 2 according to the present utility model;

fig. 6 is an enlarged schematic view of the anti-loosening mechanism of fig. 3 according to the present utility model.

In the figure: 1. a support frame; 101. a first moving frame; 102. a clamping plate; 103. a test bench; 104. a power supply box; 105. a detection table; 106. a circuit board body; 107. a second moving frame; 108. a connecting wire; 109. a wire connector; 110. a layer of power switch; 111. a two-layer power switch; 112. three layers of power switches; 113. a wire body; 114. a wiring port; 2. an adjustment position mechanism; 201. a guide block; 202. a guide groove; 203. adjusting the position group; 2031. a mounting block; 2032. a fastening bolt; 3. an anti-loosening mechanism; 301. compressing the spring; 302. a fixing ring; 303. a fastening stud; 304. a clamping ring; 4. a wiring anti-winding mechanism; 401. a protective ring; 402. distributing coils; 403. a connecting block; 404. and (5) fastening a screw.

Detailed Description

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are only some embodiments of the present utility model, not all embodiments, and furthermore, the terms "first", "second", "third", "up, down, left, right", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Meanwhile, in the description of the present utility model, unless explicitly stated and defined otherwise, the terms "connected", "connected" and "connected" should be interpreted broadly, and for example, may be fixedly connected, detachably connected, or integrally connected; the mechanical connection and the electrical connection can be adopted; all other embodiments, which may be directly or indirectly through intermediaries, which may be obtained by a person of ordinary skill in the art without inventive effort based on the embodiments of the present utility model are within the scope of the present utility model.

The utility model provides a structure of an LED lamp circuit board aging test device, as shown in fig. 1 and 2, the structure comprises a support frame 1, a power box 104 is arranged on the surface of the support frame 1, the model of the power box 104 can be LA series, three layers of power switches 112 are arranged on the surface of the power box 104, two layers of power switches 111 are arranged on the surface of the power box 104, one layer of power switch 110 is arranged on the surface of the power box 104, a first movable frame 101 is arranged on the surface of the support frame 1, a second movable frame 107 is arranged on the surface of the support frame 1, the second movable frame 107 is arranged above the first movable frame 101, a detection table 105 is arranged on the surface of the support frame 1, the detection table 105 is arranged above the second movable frame 107, clamping plates 102 are arranged on the surfaces of the detection table 105, the second movable frame 107 and the first movable frame 101, a test table 103 is arranged on the surface of the clamping plates 102, an equidistant circuit board body 106 is arranged on the surface of the top of the test table 103, an equidistant circuit board body 108 is arranged on the surface of the second movable frame 107 and the surface of the first movable frame 101, an equidistant connector 109 is arranged on the surface of the first movable frame 101, the connector 109 is connected with the surface of the first movable frame body and the surface connector 109, and the surface connector 109 is connected with the surface connector body and the surface connector body 109.

Further, as shown in fig. 2 and 4, the surfaces of the first moving frame 101, the second moving frame 107 and the supporting frame 1 are all provided with an adjusting position mechanism 2, the inside of the adjusting position mechanism 2 comprises a guide block 201, a guide groove 202 and an adjusting position group 203, the adjusting position group 203 is arranged on the surfaces of the second moving frame 107, the first moving frame 101 and the supporting frame 1, the adjusting position group 203 is composed of a mounting block 2031 and a fastening bolt 2032, the surfaces of the two ends of the first moving frame 101 and the second moving frame 107 are all provided with the guide block 201, the inner wall of the supporting frame 1 is provided with the guide groove 202, the guide groove 202 is in sliding fit with the surface of the guide block 201, the surface of the bottom of the guide block 201 is provided with a mounting block 2031, the surface of the mounting block 2031 is attached to the inner wall of the guide groove 202, the surface of the mounting block 2031 is in threaded connection with the fastening bolt 2032, and one end of the fastening bolt 2032 penetrates through the mounting block 2031 and is in threaded fastening with the inner wall of the guide groove 202.

In practice, the user unscrews the fastening bolt 2032 on the surface of the mounting block 2031 as required, and the user pulls the first moving frame 101 and the second moving frame 107 respectively, so that the first moving frame 101 and the second moving frame 107 drive the guide block 201 to slide in the guide groove 202, when the first moving frame 101 and the second moving frame 107 move to the required positions, the user tightens the fastening bolt 2032 on the surface of the mounting block 2031, and installs the mounting block 2031 on the inner wall of the guide groove 202 under the action of the fastening bolt 2032, thereby installing the first moving frame 101 and the second moving frame 107 at the required positions to realize the function of the testing device to adjust the positions of the first moving frame 101 and the second moving frame 107.

Further, as shown in fig. 3 and 5, the surfaces of the wire body 113 and the wire connection port 114 are both provided with the anti-loosening mechanism 3, the anti-loosening mechanism 3 is composed of a compressing spring 301, a fixing ring 302, a fastening stud 303 and a clamping ring 304, the surface of the wire connection port 114 is in threaded connection with the fastening stud 303 for fixing the surface of the wire connection port 114 and the surface of the wire connector 109, one end of the fastening stud 303 penetrates through the wire connection port 114 and is in threaded fastening with the surface of the wire connector 109, the fixing ring 302 is installed on the surface of the wire connection port 114, the clamping ring 304 for clamping and protecting the surface of the wire body 113 is arranged on the inner walls of the fixing ring 302 and the wire connection port 114, the surface of the clamping ring 304 is attached to the surface of the wire body 113, the equidistant compressing spring 301 is installed on the inner walls of the fixing ring 302 and the wire connection port 114, and one end of the spring 301 is fixed on the surface of the clamping ring 304.

During implementation, the wiring port 114 is mounted on the surface of the connector 109 under the action of the fastening stud 303, so that one end of the wire body 113 is inserted into the wiring port 114, at this time, the wire body 113 is clamped under the action of the fixing ring 302, the clamping ring 304 is driven to move under the action of the elastic force of the pressing spring 301 on the inner wall of the fixing ring 302 and the inner wall of the wire body 113, so that the clamping ring 304 moves to be attached to the surface of the wire body 113, and the wire body 113 is clamped and protected under the action of the pressing spring 301 and the clamping ring 304, so that the phenomenon that the wire body 113 loosens from the inside of the wiring port 114 is prevented by the testing device.

Further, as shown in fig. 2 and 6, the surface of the supporting frame 1 and the surface of the connecting wire 108 are provided with a wiring anti-winding mechanism 4, the wiring anti-winding mechanism 4 is composed of a protection ring 401, a cloth ring 402, a connecting block 403 and a fastening screw 404, the surface of the supporting frame 1 is provided with the cloth ring 402, the inner wall of the cloth ring 402 is wrapped with the protection ring 401 for protecting the surface of the connecting wire 108, the surface of the protection ring 401 is attached to the surface of the connecting wire 108, the surface of the cloth ring 402 is provided with the connecting block 403, the surface of the connecting block 403 is in threaded connection with the fastening screw 404 for fixing the cloth ring 402 and the surface of the supporting frame 1, and one end of the fastening screw 404 penetrates through the connecting block 403 and is in threaded fastening with the surface of the supporting frame 1.

During implementation, the user is connected connecting wire 108 with splint 102 respectively, at this moment, the user places cloth coil 402 on the surface of cloth coil 402 for cloth coil 402 drives connecting block 403 and moves to laminating mutually with the surface of support frame 1, afterwards, the user screws up the fastening screw 404 on connecting block 403 surface, install the connecting block 403 on the surface of support frame 1 under the effect of fastening screw 404, thereby install cloth coil 402 on the surface of support frame 1, at this moment, protect the surface of connecting wire 108 under the effect of cloth coil 402 inner wall guard ring 401, avoid wearing and tearing of connecting wire 108, wire the connecting wire 108 under the effect of cloth coil 402, avoid connecting wire 108 to appear winding phenomenon, in order to realize testing arrangement to the antiwind function of wiring of connecting wire 108.

Working principle: when the testing device is used, firstly, the support frame 1 is placed at a designated position, the connecting wires 108 are respectively connected with the clamping plates 102 by a user, at this time, the user places the cloth coil 402 on the surface of the cloth coil 402, the cloth coil 402 drives the connecting blocks 403 to move to be attached to the surface of the support frame 1, then, the user tightens the fastening screws 404 on the surface of the connecting blocks 403, the connecting blocks 403 are installed on the surface of the support frame 1 under the action of the fastening screws 404, so that the cloth coil 402 is installed on the surface of the support frame 1, at this time, the surface of the connecting wires 108 is protected under the action of the protective rings 401 on the inner wall of the cloth coil 402, abrasion of the connecting wires 108 is avoided, the connecting wires 108 are wired under the action of the cloth coil 402, and the winding phenomenon of the connecting wires 108 is avoided, so that the testing device has the winding phenomenon of the connecting wires 108 together in the use process.

Then, the user unscrews the fastening bolt 2032 on the surface of the installation block 2031 according to the need, and the user pulls the first moving frame 101 and the second moving frame 107 respectively, so that the first moving frame 101 and the second moving frame 107 drive the guide block 201 to slide in the guide groove 202, when the first moving frame 101 and the second moving frame 107 move to the required position, the user tightens the fastening bolt 2032 on the surface of the installation block 2031, and installs the installation block 2031 on the inner wall of the guide groove 202 under the action of the fastening bolt 2032, so that the first moving frame 101 and the second moving frame 107 are installed at the required position, and the function of adjusting the positions of the first moving frame 101 and the second moving frame 107 by the testing device is realized, so that the testing device can adjust the positions of the first moving frame 101 and the second moving frame 107 according to the use need of the user, and the use requirement of the testing device can be more convenient for the user.

Then, the user respectively operates one deck switch 110, two-layer switch 111 and three-layer switch 112 as required, make one deck switch 110, two-layer switch 111 and three-layer switch 112 control respectively detection platform 105, second movable rack 107 and first movable rack 101, carry out the circular telegram test to circuit board body 106 on test platform 103 surface, thereby test the ageing situation of circuit board body 106, after the one end of wire 113 inserts to the inside of wiring mouth 114, install the surface at wire connector 109 under the effect of fastening stud 303, make the one end of wire 113 insert to the inside of wiring mouth 114, at this moment, clamp down under the effect of solid fixed ring 302, drive clamping ring 304 motion under the elasticity effect of gu fixed ring 302 and wire 113 inner wall spring 301, make clamping ring 304 move to the surface laminating with wire 113, clamp down the effect of clamping ring 304, thereby realize testing arrangement prevents wire 113 from the inside of wiring mouth 114 and loose, thereby the testing arrangement prevents wire 113 from appearing loose from appearing in the inside of wiring mouth 114, thereby the testing arrangement can avoid the accurate testing arrangement to appear in the time of using wire 113 and can avoid the phenomenon to appear in the testing arrangement and the accurate testing arrangement has finished the testing failure.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present utility model may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims (8)

1. The utility model provides a LED lamp circuit board ageing test device, includes support frame (1), its characterized in that: the surface mounting of support frame (1) has power box (104), the surface of support frame (1) is provided with first movable frame (101), the surface of support frame (1) is provided with second movable frame (107), the surface mounting of support frame (1) has detection platform (105), detection platform (105) are located the top of second movable frame (107), detection platform (105), second movable frame (107) and the surface of first movable frame (101) all install splint (102), splint (102) top surface mounting has test bench (103), detection platform (105), second movable frame (107) and the surface mounting of first movable frame (101) have equidistant connector (109), the surface mounting of power box (104) has connecting wire (108), one end of connecting wire (108) runs through detection platform (105), second movable frame (107) and first movable frame (101) and are linked together with splint (102) surface mounting splint (103), connector (103) top surface mounting has line (106) at the body (106) of line body (106) at the equidistant line position, line (106) are all provided with the line body (106), one end of the wire body (113) is connected with the surface of the wire connector (109), the surfaces of the first movable frame (101), the second movable frame (107) and the supporting frame (1) are provided with an adjusting position mechanism (2), the inside of the adjusting position mechanism (2) comprises a guide block (201), a guide groove (202) and an adjusting position group (203), the surfaces of the wire body (113) and the wire connection port (114) are provided with an anti-loosening mechanism (3), the anti-loosening mechanism (3) is composed of a compression spring (301), a fixing ring (302), a fastening stud (303) and a clamping ring (304), the surfaces of the supporting frame (1) and the connecting wire (108) are provided with a wiring anti-winding mechanism (4), and the wiring anti-winding mechanism (4) is composed of a protection ring (401), a cloth coil (402), a connecting block (403) and a fastening screw (404).

2. The LED lamp circuit board burn-in apparatus of claim 1, wherein: the surface mounting of power supply box (104) has three-layer switch (112), the surface mounting of power supply box (104) has two-layer switch (111), the surface mounting of power supply box (104) has one-layer switch (110), second movable frame (107) are located first movable frame (101) top.

3. The LED lamp circuit board burn-in apparatus of claim 1, wherein: the adjusting position group (203) is arranged on the surfaces of the second movable frame (107), the first movable frame (101) and the supporting frame (1), the adjusting position group (203) is composed of a mounting block (2031) and fastening bolts (2032), guide blocks (201) are arranged on the surfaces of the two ends of the first movable frame (101) and the second movable frame (107), guide grooves (202) are formed in the inner walls of the supporting frame (1), and the guide grooves (202) are in sliding fit with the surfaces of the guide blocks (201).

4. The LED lamp circuit board burn-in apparatus of claim 3, wherein: the surface mounting device is characterized in that a mounting block (2031) is mounted on the surface of the bottom of the guide block (201), the surface of the mounting block (2031) is attached to the inner wall of the guide groove (202), a fastening bolt (2032) is connected to the surface of the mounting block (2031) in a threaded mode, and one end of the fastening bolt (2032) penetrates through the mounting block (2031) and is fastened with the inner wall of the guide groove (202) in a threaded mode.

5. The LED lamp circuit board burn-in apparatus of claim 1, wherein: the surface threaded connection of wiring mouth (114) has the fastening double-screw bolt (303) that are used for fixing the surface of wiring mouth (114) and connector (109), the one end of fastening double-screw bolt (303) runs through wiring mouth (114) and with the surface threaded fastening of connector (109), the surface mounting of wiring mouth (114) has solid fixed ring (302).

6. The LED lamp circuit board burn-in apparatus of claim 5, wherein: the wire clamping device is characterized in that clamping rings (304) used for clamping and protecting the surface of the wire body (113) are arranged on the inner walls of the fixing ring (302) and the wire connection port (114), the surface of the clamping rings (304) is attached to the surface of the wire body (113), equidistant compression springs (301) are arranged on the inner walls of the fixing ring (302) and the wire connection port (114), and one ends of the compression springs (301) are fixed to the surface of the clamping rings (304).

7. The LED lamp circuit board burn-in apparatus of claim 1, wherein: the surface of support frame (1) all is provided with cloth coil (402), the inner wall parcel of cloth coil (402) has guard ring (401) that are used for protecting the surface of connecting wire (108), the surface of guard ring (401) is laminated with the surface of connecting wire (108).

8. The LED lamp circuit board burn-in apparatus of claim 7, wherein: the surface mounting of cloth coil (402) has connecting block (403), the surface threaded connection of connecting block (403) has fastening screw (404) that are used for fixing the surface of cloth coil (402) and support frame (1), the one end of fastening screw (404) runs through connecting block (403) and with the surface threaded fastening of support frame (1).