Multifunctional plate fixing clamp

Abstract

The utility model provides a multifunctional plate fixing clamp, which is applied to the technical field of plate fixing devices, and is characterized in that the multifunctional plate fixing clamp comprises a clamp frame, one end of the clamp frame is provided with a clamping assembly for clamping the clamp frame on a cabinet body, and the other end of the clamp frame is provided with a fixing assembly for clamping a sealing plate; a mounting hole for mounting a drill bushing is formed in the clamp frame; the clamp frame is detachably provided with a positioning piece matched with the reserved groove so that the drill bushing can be aligned to the position, to be drilled, of the side wall of the plate. Compared with the prior art, the multifunctional pen container has the advantages of being simple in structure, convenient to operate, flexible to use, multifunctional and capable of meeting various using requirements of users.

Description

Technical Field

[0001] The utility model relates to the technical field of plate fixing devices, in particular to a multifunctional plate fixing clamp. Background Art

[0002] Sheets are flat rectangular building material boards made into standard sizes. They are used in the construction industry as components of walls, ceilings or floors. Sheets are divided into thin sheets, medium sheets, thick sheets and extra-thick sheets according to their thickness. They are usually made into flat rectangular building material boards of standard sizes. One industry where sheets are widely used is furniture.

[0003] Since 70%-80% of the boards used for assembled furniture on the market are 18mm thick synthetic boards, which are very representative, reserved grooves are reserved during production. When installing furniture, electric drills are often used to drill holes on the side walls of the boards in the same line as the reserved grooves to facilitate the assembly of fixture furniture.

[0004] When installing furniture, the cabinets close to the wall, such as the ceiling and the wall, will be covered with sealing boards (closing boards / strips, trimming boards). The traditional way of installing sealing boards is to measure the size with a tape measure, and then draw lines on the sealing boards for cutting. However, all walls are not 100% flat and vertical. Some walls are even wavy, which leads to inaccurate tape measure and inaccurate lines. The sealing boards need to be cut and ground again and again, and they need to be repeatedly processed before they can be installed.

[0005] At present, a Chinese utility model with publication number CN214837567U discloses a plate fixing clamp, including a clamp frame, one end of which is provided with a clamping assembly; the clamping assembly includes a first tightening head and a screw rod arranged on one end face of the first tightening head, one end of the screw rod is threadedly connected to the clamp frame, and the other end of the screw rod is provided with the clamping assembly; the other end of the clamp frame is provided with a sealing plate fixing assembly.

[0006] However, although the existing plate fixing clamps can clamp the sealing plate, their functions are relatively single, and they do not have the characteristic of being multi-purpose, and cannot meet the various usage needs of users. Utility Model Content

[0007] The utility model aims to provide a multifunctional plate fixing fixture, which has the advantages of simple structure, multi-purpose characteristics, and can meet the various usage needs of users.

[0008] In order to achieve the above purpose and other related purposes, the utility model provides the following technical solutions:

[0009] A multifunctional plate fixing fixture comprises a fixture frame, one end of which is provided with a clamping assembly for clamping the fixture frame on a cabinet body, and the other end of which is provided with a fixing assembly for clamping a sealing plate;

[0010] The fixture frame is provided with a mounting hole for mounting a drill sleeve;

[0011] The fixture frame is detachably provided with a positioning piece which cooperates with the reserved groove to align the drill sleeve with the position of the hole to be drilled on the side wall of the plate.

[0012] Through the above technical scheme, the fixture frame is the main body of the fixing fixture, and the clamping assembly is used to clamp the main body of the fixture frame on the side plate or top plate of the cabinet to be assembled; the fixing assembly is used to clamp the cover plate horizontally on the fixture frame, so as to ensure the accuracy of measurement and marking, and then ensure the accuracy of secondary processing; the mounting hole is used to install the drill sleeve, and when the positioning piece is inserted into the reserved groove, the drill sleeve is aligned with the position of the hole to be drilled on the side wall of the plate, so that the electric drill can accurately drill the hole at the position to be drilled; the positioning piece cooperates with the reserved groove to accurately determine the drilling position of the side wall of the plate, has strong pertinence, can accurately position, and does not need to adjust the fixing fixture multiple times;

[0013] The positioning piece can be detachably installed on the clamp frame, so that when the clamp is fixed in other usage scenarios, the positioning piece can be removed to avoid interference; the structure is simple and has the characteristics of one object for multiple uses, which can meet the user's various usage needs.

[0014] In one embodiment of the utility model, the clamp frame includes a hook plate, a side end plate fixedly connected to the hook plate, and a bottom plate fixedly connected to the side end plate, and the hook plate and the bottom plate are arranged opposite to each other;

[0015] The side end plate is provided with two mounting holes, and the axes of the two mounting holes are in a straight line.

[0016] Through the above technical solution, the hook plate and the bottom plate are arranged relative to each other, so that the hook plate is clamped on the side plate or the top plate of the cabinet, and then the clamp frame is clamped on the cabinet through the clamping assembly; two mounting holes are opened on the side end plate, which can meet the needs of drilling holes on the two side plates when the two cabinet side plates overlap.

[0017] In an embodiment of the present invention, the mounting hole is a threaded hole.

[0018] Through the above technical solution, the drill sleeve can be engaged and connected to the mounting hole, making disassembly more convenient.

[0019] In one embodiment of the utility model, a strip hole is provided on the hook plate, and an expanded hole connected to the strip hole is provided on the hook plate close to the side end plate, and the diameter of the expanded hole is greater than the width of the strip hole.

[0020] Through the above technical solution, the positioning piece is installed in the strip hole, and the diameter of the expanded hole is larger than the width of the strip hole, thereby facilitating the installation of the positioning piece or removing the positioning piece from the fixture frame.

[0021] In one embodiment of the present utility model, the positioning member is disposed in the strip-shaped hole;

[0022] The positioning member comprises a connecting rod and a first positioning circular plate and a second positioning circular plate respectively fixed at two ends of the connecting rod.

[0023] Through the above technical solution, the first positioning circular plate and the second positioning circular plate are used to cooperate with the reserved grooves of different diameters. The first positioning circular plate and the second positioning circular plate respectively abut against the two sides of the hook plate, thereby preventing the connecting rod from moving in the Z-axis direction.

[0024] In one embodiment of the present invention, the clamping assembly includes a tightening head and a screw rod meshingly connected to the base plate; the tightening head is fixed to one end of the screw rod.

[0025] In one embodiment of the utility model, the clamping assembly further comprises a metal cover, the metal cover is fixed to the other end of the screw rod (202), and the metal cover is arranged opposite to the hook plate.

[0026] Through the above technical solution, the hook plate is clamped on the side plate or top plate of the cabinet, and the tightening head is rotated to make the screw move forward under the restriction of the thread, thereby driving the metal cover to squeeze the side plate or top plate of the cabinet, and fixing the side plate or bottom plate of the cabinet between the metal cover and the hook plate, so that the clamp frame is fixed on the cabinet, completing the preliminary installation.

[0027] In one embodiment of the present invention, the fixing assembly includes a connecting block fixed to the side wall of the side end plate, a T-shaped frame movably connected to the connecting block, and a spring sleeved on the T-shaped frame;

[0028] The T-shaped frame includes a blocking rod, a connecting long rod fixedly connected to the blocking rod, and a mounting plate fixed to the end of the connecting long rod;

[0029] The connecting block is provided with a through hole penetrating the side end plate, and the connecting long rod is located in the through hole; the spring is sleeved on the connecting long rod and is located between the mounting plate and the connecting block.

[0030] In an embodiment of the present invention, a mounting groove communicating with the through hole is provided on a side of the side end plate away from the connecting block, and the mounting plate is arranged in the mounting groove.

[0031] In one embodiment of the utility model, a limiting groove is provided on the side wall of the connection block, and when the blocking rod is located in the limiting groove, a fixing groove for fixing the sealing plate is formed between the blocking rod, the side end plate and the connection block.

[0032] With the above technical solution, when the sealing plate is in the fixing groove, the spring is in a compressed state, thereby stretching the connecting long rod, causing the blocking rod to squeeze the sealing plate, thereby fixing the sealing plate in the fixing groove;

[0033] Pull the blocking rod toward the side away from the sealing plate to compress the spring again, thereby increasing the width of the fixing groove, and rotate the T-shaped frame 90 degrees to set the blocking rod perpendicular to the fixing groove, thereby releasing the sealing plate.

[0034] As described above, the multifunctional plate fixing fixture of the utility model has the following beneficial effects:

[0035] 1. The hook plate is clamped on the side plate or top plate of the cabinet, and the tightening head is rotated to make the screw rod move forward under the restriction of the thread, thereby driving the metal cover to squeeze the side plate or top plate of the cabinet, and fix the side plate or top plate of the cabinet between the metal cover and the hook plate, so that the fixture frame is fixed on the cabinet, and the preliminary installation is completed;

[0036] 2. When the sealing plate is in the fixed groove, since the spring is in a compressed state, the connecting long rod is stretched to make the blocking rod squeeze the sealing plate, and then the sealing plate is fixed horizontally in the fixed groove; thereby ensuring the accuracy of measurement and marking, and then ensuring the accuracy of secondary processing; dragging the blocking rod to the side away from the sealing plate to compress the spring again, thereby increasing the groove width of the fixed groove, rotating the T-shaped frame 90° to make the blocking rod perpendicular to the fixed groove, and then releasing the sealing plate; the structure is simple and the operation is more convenient;

[0037] 3. The mounting hole is used to install the drill sleeve. When the positioning piece is inserted into the reserved groove, the drill sleeve is aligned with the position of the hole to be drilled on the side wall of the plate, so that the electric drill can accurately drill the hole at the position to be drilled. It has strong pertinence and can be accurately positioned without the need to adjust the fixing fixture multiple times.

[0038] 4. The positioning piece can be detachably installed on the fixture frame, so that the positioning piece can be removed when the fixed fixture is used in other scenarios to avoid interference; the structure is simple and has the characteristics of one thing for multiple uses, which can meet the user's various usage needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the utility model;

[0040] Figure 2 It is a cross-sectional view of the overall structure of an embodiment of the utility model;

[0041] Figure 3 This is a schematic diagram of the structure of the fixing assembly clamping the sealing plate of the embodiment of the utility model;

[0042] Figure 4 This is a schematic diagram of the connection relationship between the positioning member and the reserved hole in the embodiment of the utility model;

[0043] Figure 5 It is a schematic diagram of a drill sleeve of an embodiment of the utility model installed on the inner side of a side end plate;

[0044] Figure 6It is a schematic diagram of a drill sleeve according to an embodiment of the utility model being installed on the outside of a side end plate.

[0045] : 1. clamp frame; 2. clamping assembly; 3. fixing assembly; 4. mounting hole; 5. drill sleeve; 6. positioning piece; 101. hook plate; 102. side end plate; 103. bottom plate; 10. strip hole; 11. flared hole; 41. connecting rod; 43. first positioning circular plate; 44. second positioning circular plate; 201. tightening head; 202. screw rod; 203. metal cover; 31. connecting block; 32. T-shaped frame; 33. spring; 321. stop rod; 322. connecting long rod; 323. mounting plate; 25. through hole; 26. mounting groove; 27. limit groove; 28. fixing groove; 01. plate; 02. sealing plate; 03. cabinet; 04. reserved groove. DETAILED DESCRIPTION

[0046] The following is a description of the implementation of the present invention by means of specific embodiments. People familiar with the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0047] See also Figures 1 to 5 It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings in this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the utility model, so they have no substantial technical significance. Any modification of the structure, change in the proportion relationship, or adjustment of the size should still fall within the scope of the technical content disclosed by the utility model without affecting the effects and purposes that can be achieved by the utility model. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description, and are not used to limit the scope of the implementation of the utility model. The change or adjustment of their relative relationship should also be regarded as the scope of the implementation of the utility model without substantially changing the technical content.

[0048] See also Figure 1 and Figure 2 The utility model provides a multifunctional plate fixing fixture, comprising a fixture frame 1, one end of the fixture frame 1 is provided with a clamping component 2 for clamping the fixture frame 1 on a cabinet 03, and the other end is provided with a fixing component 3 for clamping a sealing plate 02;

[0049] The fixture frame 1 is provided with a mounting hole 4 for mounting a drill sleeve 5 ; the fixture frame 1 is detachably provided with a positioning member 6 which cooperates with the reserved groove 04 to align the drill sleeve 5 with the position of the side wall of the plate 01 to be drilled.

[0050] See also Figure 1 and Figure 2The clamp frame 1 in this embodiment is made of plastic, preferably nylon, which has excellent mechanical properties; the clamp frame 1 includes a hook plate 101, a side end plate 102 integrally formed with the hook plate 101, and a bottom plate 103 integrally formed with the side end plate 102, and the hook plate 101 and the bottom plate 103 are arranged opposite to each other; two mounting holes 4 are provided on the side end plate 102, and the axes of the two mounting holes 4 are in a straight line; the mounting hole 4 is a threaded hole, and the outer surface of one end of the drill sleeve 5 is provided with a thread engaged with the threaded hole, so that the drill sleeve 5 can be engaged and connected to the mounting hole 4, and disassembly is more convenient.

[0051] See also Figure 1 and Figure 2 A strip hole 10 is provided in the middle of the hook plate 101 along the length direction of the hook plate 101, and an expanded hole 11 connected to the strip hole 10 is provided on the hook plate 101 near the side end plate 102, and the diameter of the expanded hole 11 is greater than the width of the strip hole 10; the positioning member 6 is arranged in the strip hole 10;

[0052] The positioning member 6 includes a connecting rod 41 and a first positioning circular plate 43 and a second positioning circular plate 44 respectively fixed at both ends of the connecting rod 41; wherein the diameter of the second positioning circular plate 44 is smaller than the diameter of the first positioning circular plate 43, and the diameter of the second positioning circular plate 44 is smaller than the diameter of the expanded hole 11; the first positioning circular plate 43 and the second positioning circular plate 44 are used to cooperate with the reserved grooves 04 of different diameters, and the distance between the first positioning circular plate 43 and the second positioning circular plate 44 is equal to the thickness of the hook plate 101, so that the first positioning circular plate 43 and the second positioning circular plate 44 can respectively abut against the two sides of the hook plate 101, thereby preventing the connecting rod 41 from moving in the Z-axis direction.

[0053] See also Figure 1 and Figure 2 The clamping assembly 2 includes a tightening head 201, a screw rod 202 and a metal cover 203; a first threaded hole is opened in the middle of the bottom plate 103, and the screw rod 202 is engaged in the first threaded hole;

[0054] The tightening head 201 is bolted to one end of the screw rod 202, and the metal cover 203 is bolted to the other end of the screw rod 202. The metal cover 203 is arranged opposite to the hook plate 101; the hook plate 101 is clamped on the side plate or top plate of the cabinet 03, and the tightening head 201 is rotated to make the screw rod 202 move forward under the restriction of the thread, thereby driving the metal cover 203 to squeeze the side plate or top plate of the cabinet 03, and fix the side plate or top plate of the cabinet 03 between the metal cover 203 and the hook plate 101, so that the clamp frame is fixed on the cabinet, and the preliminary installation is completed.

[0055] See also Figure 1 and Figure 2The fixing assembly 3 includes a connecting block 31 integrally formed on the side wall of the side end plate 102, a T-shaped frame 32 movably connected to the connecting block 31, and a spring 33 sleeved on the T-shaped frame 32;

[0056] The T-shaped frame 32 includes a stopper rod 321, a connecting rod 322 bolted to the stopper rod 321, and a mounting plate 323 integrally formed at the end of the connecting rod 322;

[0057] The connecting block 31 is provided with a through hole 25 penetrating the side end plate 102, and the connecting long rod 322 is located in the through hole 25; the blocking rod 321 is located near the connecting block 31, and the mounting plate 323 is located near the side end plate 102. The spring 33 is sleeved on the connecting long rod 322 and is located between the mounting plate 323 and the connecting block 31;

[0058] A mounting groove 26 communicating with the through hole 25 is provided on the side of the side end plate 102 away from the connecting block 31, and the mounting plate 323 and the spring 33 are both arranged in the mounting groove 26;

[0059] A limiting groove 27 is provided on the side wall of the connecting block 31, and the limiting groove 27 is provided parallel to the side end plate 102. When the blocking rod 321 is located in the limiting groove 27, a fixing groove 28 for fixing the sealing plate 02 is formed between the blocking rod 321, the side end plate 102 and the connecting block 31, and the fixing groove 28 is U-shaped; when the sealing plate 02 is in the fixing groove 28, since the spring 33 is in a compressed state, the connecting long rod 322 is stretched, so that the blocking rod 321 squeezes the sealing plate 02, and then fixes the sealing plate 02 in the fixing groove 28; if the blocking rod 321 is dragged away from the sealing plate 02 to compress the spring 33 again, thereby increasing the groove width of the fixing groove 28, the T-shaped frame 32 is rotated 90° to set the blocking rod 321 perpendicular to the fixing groove 28, and then release the sealing plate 02.

[0060] Brief description of the usage process:

[0061] 1. The first use state: please refer to Figure 3 , first remove the positioning piece 6 from the fixture frame 1; then clamp the hook plate 101 on the top plate or side plate of the cabinet 03, rotate the tightening head 201 to drive the screw rod 202 to rotate, and the screw rod 202 moves forward under the restriction of the thread, thereby driving the metal plate to squeeze the top plate or side plate of the cabinet 03, and fix the fixture frame 1 on the cabinet 03 to achieve preliminary installation; then place the sealing plate 02 close to the side end plate 102 on the connecting block 31, stretch the T-shaped frame 32 and rotate it 90° so that the blocking rod 321 is located in the limiting groove 27, and the blocking rod 321 squeezes the sealing plate 02 due to the elastic force of the spring, and then fixes the sealing plate 02 in the fixing groove 28, and then uses the circular planning line;

[0062] 2. Second usage status: please refer to Figure 4, after selecting the first positioning circular plate 43 facing downward or the second positioning circular plate 44 facing downward according to the size of the reserved groove 04, the positioning member 6 is installed on the fixture frame 1 through the expanded hole 11; after the first positioning circular plate 43 or the second positioning circular plate 44 is inserted into the reserved groove 04, the tightening head 201 is rotated to drive the screw rod 202 to rotate, and the screw rod 202 moves forward under the restriction of the thread, thereby driving the metal plate to squeeze the top plate or side plate of the cabinet 03, and the fixture frame 1 is fixedly installed on the cabinet 03; then the drill sleeve 5 is installed on the mounting hole 4 from the outside of the side end plate 102, and the drill sleeve 5 is aligned with the position to be drilled on the side wall of the plate 01, so that the electric drill can accurately drill the hole at the position to be drilled;

[0063] 3. The third use state: please refer to Figure 5 , when two cabinets 03 are installed adjacent to each other, the two side panels of the two cabinets 03 are butted together; when one of the cabinets 03 needs to be installed with a cabinet door, in order to be more beautiful, the cabinet 03 with the door installed and the cabinet 03 without the door installed should be on the same plane, so the side panel of the cabinet 03 with the door installed should be shorter than the side panel of the cabinet 03 without the door installed; when drilling holes on the side walls of the side panels of the cabinet 03 with the door installed; first remove the positioning piece 6 from the fixture frame 1; then install the drill sleeve 5 on the mounting hole 4 from the inner side of the side end plate 102, and then clamp the hook plate 101 on the side panel of the cabinet 03 with the door installed, align the drill sleeve 5 with the side panel of the cabinet 03 with the door installed, rotate the tightening head 201 to squeeze the metal disk against the side panel of the cabinet 03 without the door installed, and then fix the fixture frame 1 on the side panels of the two cabinets 03; the electric drill drills holes on the side panels through the drill sleeve to ensure the accuracy of the drilling;

[0064] 4. The fourth use state: please refer to Figure 6 , two cabinets 03 are installed adjacent to each other, and the side panels of the two cabinets 03 are butted together. When holes need to be drilled on the side panels of the two cabinets 03, first remove the positioning piece 6 from the fixture frame 1, and then install the two drill sleeves 5 on the two mounting holes 4 from the outside of the side end plate 102, and then clamp the hook plate 101 on the side panel of the cabinet 03, and align the two drill sleeves 5 with the side panels of the two cabinets 03 respectively. Rotate the tightening head 201 to squeeze the metal disk against the side panels of the cabinet 03, and then fix the fixture frame 1 on the side panels of the two cabinets 03; the electric drill drills holes on the two side panels through the two drill sleeves to ensure the accuracy of the drilling.

[0065] In summary, the utility model has a simple structure, convenient operation, flexible use, and a multi-purpose feature, and can meet the various usage needs of users. Therefore, the utility model effectively overcomes various shortcomings in the prior art and has a high industrial utilization value.

[0066] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the technology may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed in the present invention shall still be covered by the claims of the present invention.

Claims

1. A multifunctional plate fixing fixture, characterized in that: It comprises a clamp frame (1), one end of which is provided with a clamping assembly (2) for clamping the clamp frame (1) on a cabinet (03), and the other end of which is provided with a fixing assembly (3) for clamping a sealing plate (02); The fixture frame (1) is provided with a mounting hole (4) for mounting a drill sleeve (5); The fixture frame (1) is detachably provided with a positioning piece (6) which cooperates with the reserved groove (04) to align the drill sleeve (5) with the position of the hole to be drilled on the side wall of the plate (01).

2. The multifunctional plate fixing fixture according to claim 1, characterized in that: The clamp frame (1) comprises a hook plate (101), a side end plate (102) fixedly connected to the hook plate (101), and a bottom plate (103) fixedly connected to the side end plate (102), wherein the hook plate (101) and the bottom plate (103) are arranged opposite to each other; Two mounting holes (4) are provided on the side end plate (102), and the axes of the two mounting holes (4) are on a straight line.

3. The multifunctional plate fixing fixture according to claim 2 is characterized in that: The mounting hole (4) is a threaded hole.

4. The multifunctional plate fixing fixture according to claim 2, characterized in that: The hook plate (101) is provided with a strip hole (10), and the hook plate (101) close to the side end plate (102) is provided with an expanded hole (11) connected with the strip hole (10), and the diameter of the expanded hole (11) is greater than the width of the strip hole (10).

5. The multifunctional plate fixing fixture according to claim 4, characterized in that: The positioning member (6) is arranged in the strip-shaped hole (10); The positioning member (6) comprises a connecting rod (41) and a first positioning circular plate (43) and a second positioning circular plate (44) respectively fixed at two ends of the connecting rod (41).

6. The multifunctional plate fixing fixture according to claim 2, characterized in that: The clamping assembly (2) comprises a tightening head (201) and a screw rod (202) meshingly connected to a base plate (103); the tightening head (201) is fixed to one end of the screw rod (202).

7. The multifunctional plate fixing fixture according to claim 6, characterized in that: The clamping assembly (2) further comprises a metal cover (203), wherein the metal cover (203) is fixed to the other end of the screw rod (202), and the metal cover (203) is arranged opposite to the hook plate (101).

8. The multifunctional plate fixing fixture according to claim 2, characterized in that: The fixing assembly (3) comprises a connecting block (31) fixed on the side wall of the side end plate (102), a T-shaped frame (32) movably connected to the connecting block (31), and a spring (33) sleeved on the T-shaped frame (32); The T-shaped frame (32) comprises a blocking rod (321), a connecting long rod (322) fixedly connected to the blocking rod (321), and a mounting plate (323) fixed to the end of the connecting long rod (322); The connecting block (31) is provided with a through hole (25) penetrating the side end plate (102); the connecting long rod (322) is located in the through hole (25); the spring (33) is sleeved on the connecting long rod (322) and is located between the mounting plate (323) and the connecting block (31).

9. The multifunctional plate fixing fixture according to claim 8, characterized in that: A mounting groove (26) communicating with the through hole (25) is provided on the side of the side end plate (102) away from the connection block (31), and the mounting plate (323) is arranged in the mounting groove (26).

10. The multifunctional plate fixing fixture according to claim 8, characterized in that: A limiting groove (27) is provided on the side wall of the connecting block (31); when the blocking rod (321) is located in the limiting groove (27), a fixing groove (28) for fixing the sealing plate (02) is formed between the blocking rod (321), the side end plate (102) and the connecting block (31).

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