Low-temperature wire clamp

Abstract

The utility model provides a low-temperature line card, relates to the technical field of line cards, and aims to solve the technical problem that a low-temperature line card in the prior art cannot be used in extremely cold areas. A low-temperature wire clamp comprises an upper cover, a lower cover and a plurality of fixing bolts, a plurality of nuts are arranged in the lower cover, the upper cover is provided with a plurality of first through holes in one-to-one correspondence with the nuts, the fixing bolts penetrate through the first through holes and are in threaded connection with the nuts, and the upper cover and the lower cover are fixed through the fixing bolts and the nuts. By rotating the fixing bolt, the fixing bolt is in threaded connection with the nut arranged in the lower cover, connecting structures such as a rotating shaft and a buckle which are prone to embrittlement and fracture in the prior art are abandoned, the overall strength of the wire clamp is improved, and the wire clamp can be used in extremely cold areas.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of line card, specifically refers to a low temperature line card. BACKGROUND

[0002] Electronic detonator, also called digital electronic detonator, digital detonator or industrial digital electronic detonator, is an electric detonator controlled by an electronic control module, and the function of the line card connector used by the electronic detonator is to connect and conduct the corresponding wires in two cables, that is, to connect the two wires of the sub-line A to the corresponding two wires of the bus B to realize conduction.

[0003] The limit temperature of the line card on the market is generally -40 degrees Celsius, and one of the reasons is that this kind of line card adopts the rotating connection mode of upper and lower covers, which needs to set the shaft and buckle structures prone to embrittlement and fracture, so that it cannot be used in extremely cold areas, such as -60 degrees Celsius environment. UTILITY MODEL CONTENTS

[0004] In view of the defects of the prior art, the utility model aims at providing a low temperature line card to solve the technical problem that the low temperature line card in the prior art cannot be used in extremely cold areas.

[0005] To solve the above technical problems, the utility model provides a low temperature line card, which comprises an upper cover, a lower cover and a plurality of fixing bolts, the lower cover is provided with a plurality of nuts, the upper cover is provided with a plurality of first through holes corresponding to the nuts one by one, and the fixing bolts pass through the first through holes and are threadedly connected with the nuts.

[0006] After adopting the above structure, the utility model has the following advantages: the fixing mode of the upper cover and the lower cover adopts fixing bolts and nuts, the fixing bolts are threadedly connected with the nuts provided in the lower cover by rotating the fixing bolts, the connecting structure prone to embrittlement and fracture such as shaft and buckle in the prior art is abandoned, the strength of the line card as a whole is improved, and the line card can be used in extremely cold areas.

[0007] As an improvement, the lower cover is provided with a plurality of counterbores at the bottom end, each counterbore is provided with a nut, and the lower cover is provided with a plurality of second through holes corresponding to the nuts one by one.

[0008] As improvement, the lower cover is internally provided with a plurality of first bolt columns corresponding to the nuts, each of which is provided with a second through hole, the upper cover is internally provided with a plurality of second bolt columns corresponding to the first bolt columns, each of which is provided with a first through hole, the upper end of each first bolt column is provided with a clamping groove, and the bottom end of each second bolt column is provided with a protrusion for clamping into the clamping groove; by adopting the structure, the fixing bolt is positioned and fixed by the first bolt column and the second bolt column, and the protrusion and the clamping groove play a positioning and guiding role, so that the position of the upper cover on the lower cover is accurate, and the connection of the fixing bolt is facilitated.

[0009] As improvement, the lower cover is internally provided with a mounting groove, and the mounting groove is internally provided with a spring leaf.

[0010] As improvement, the spring leaf comprises four side edges, each of which is provided with a protruding part at the bottom end, and each protruding part is provided with a clamping block at both ends, and the mounting groove comprises four insertion grooves corresponding to the side edges, and each protruding part is clamped in one of the insertion grooves and the two clamping blocks abut against the side walls at both ends of the insertion groove; by adopting the structure, a total of four side edges are provided, and each side edge is provided with two clamping blocks and insertion grooves, that is, eight clamping blocks and insertion grooves are arranged on one spring leaf, so that the problem of loosening of the spring leaf due to thermal expansion and cold contraction of the wire clamp in extremely cold areas is prevented.

[0011] As improvement, the wall thicknesses of the upper cover and the lower cover are greater than 2 cm; by adopting the structure, the overall structural strength of the wire clamp is further improved to adapt to the use in extremely cold areas.

[0012] As improvement, the upper cover and the lower cover are made of low-temperature resistant material, and the low-temperature resistant material is abs modified material; by adopting the structure, the cold resistance effect of the material of the upper cover and the lower cover is improved to adapt to the use of the wire clamp in extremely cold areas.

[0013] As improvement, the fixing bolts and the nuts are four. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a sectional view of the utility model.

[0015] Figure 2 It is a sectional view of the utility model.

[0016] Figure 3 It is a sectional view of the utility model.

[0017] Figure 4 It is a sectional view of the utility model.

[0018] Figure 5 It is a sectional view of the utility model.

[0019] Figure 6This is a three-dimensional structural diagram of the upper cover portion of this utility model.

[0020] Reference numerals: 1. Top cover; 2. Bottom cover; 3. Fixing bolt; 4. Nut; 5. First through hole; 6. Countersunk hole; 7. Second through hole; 8. First bolt post; 10. Second bolt post; 12. Slot; 13. Protrusion; 14. Mounting groove; 141. Slot; 15. Spring; 151. Side; 152. Protrusion; 153. Locking block. Detailed Implementation

[0021] The following is a detailed description of a low-temperature wire clip according to the present invention, with reference to the accompanying drawings.

[0022] like Figures 1 to 6 As shown, a low-temperature wire clamp includes an upper cover 1, a lower cover 2 and several fixing bolts 3. The lower cover 2 is provided with several nuts 4, and the upper cover 1 is provided with several first through holes 5 corresponding to the nuts 4. The fixing bolts 3 pass through the first through holes 5 and are threadedly connected to the nuts 4.

[0023] like Figure 1 As shown, the bottom end of the lower cover 2 is provided with several countersunk holes 6, and each countersunk hole 6 is provided with a nut 4. The lower cover 2 is provided with several second through holes 7 corresponding to the nuts 4 one by one. The upper cover 1 and the lower cover 2 are formed by injection molding through a mold and by heating injection molding using a vertical injection molding machine. This process has higher precision than assembly, produces better quality products, has no assembly defects, and has better sealing performance than assembly. Each nut 4 is injected into the lower cover 2 by secondary injection molding.

[0024] like Figure 1 and Figure 2 As shown, the lower cover 2 has several first bolt posts 8 corresponding one-to-one with nuts 4. Specifically, nuts 4 are installed at the outer bottom end of the lower cover 2 where the first bolt posts 8 are located. Each first bolt post 8 has a second through hole 7, which penetrates the lower cover 2 and communicates with the countersunk hole 6. The second through hole 7 and the countersunk hole 6 are coaxially arranged, as shown... Figure 1 and Figure 6 As shown, the upper cover 1 has several second bolt posts 10 corresponding one-to-one with the first bolt posts 8. Each second bolt post 10 has a first through hole 5. Each first bolt post 8 has a slot 12 at its upper end. Each second bolt post 10 has a protrusion 13 at its bottom end for engaging with the slot 12. The first through hole 5 also passes through the protrusion 13. The lower cover 2 is integrally formed with the first bolt posts 8, and the upper cover 1 is integrally formed with the second bolt posts 10 and the protrusion 13.

[0025] When the upper cover 1 is connected with the lower cover 2, the first bolt column 8 and the second bolt column 10 are coaxially arranged, the protrusion 13 is clamped into the clamping slot 12, the fixing bolt 3 is sequentially threaded through the first through hole 5 and the second through hole 7 from top to bottom and is threadedly connected with the nut 4, the connection and assembly of the upper cover 1 and the lower cover 2 are completed, the connecting structure such as the rotating shaft and the buckle in the prior art which is easy to be brittle and broken is abandoned, the strength of the line card as a whole is improved, and the line card can be used in extremely cold areas.

[0026] In the embodiment, as shown in Figure 2 and Figure 6 , the fixing bolt 3 and the nut 4 are both four, and therefore the first bolt column 8 and the second bolt column 10 and other structures are also four.

[0027] Further, the upper cover 1 and the lower cover 2 are both made of low-temperature-resistant material, the low-temperature-resistant material is abs modified material, and the wall thicknesses of the upper cover 1 and the lower cover 2 are both greater than 2 cm, which is more suitable for use in extremely cold areas.

[0028] As shown in Figure 3 and Figure 5 , the lower cover 2 is provided with a mounting groove 14, and the mounting groove 14 is provided with a reed 15; in the embodiment, the lower cover 2 is provided with two mounting grooves 14 and two reeds 15, and the specific distribution structure is the prior art, and as shown in Figure 3 , details are not repeated here; the structures of the two mounting grooves 14 and the two reeds 15 are the same, and the specific structures of one of the mounting grooves 14 and one of the reeds 15 are taken as examples for description.

[0029] As shown in Figure 4 , the reed 15 includes four side edges 151, the reed 15 is formed by the four side edges 151, the bottom end of each side edge 151 is provided with a protruding part 152, the two ends of each protruding part 152 are provided with clamping blocks 153, and each protruding part 152, each clamping block 153 and each side edge 151 are integrally formed; as shown in Figure 3 , the mounting groove 14 includes four insertion grooves 141 corresponding to the side edges 151; as shown in Figure 5 , each protruding part 152 is clamped in one of the insertion grooves 141, and the two clamping blocks 153 abut against the two end side walls of the insertion groove 141, that is, each protruding part 152 is in interference fit with the insertion groove 141 through the clamping blocks 153 on the two sides thereof. The reed 15 is pressed into the lower cover 2 by a reed pressing machine.

[0030] According to the experimental results, after the line card in the utility model is kept at a temperature of minus 60 degrees for 24 hours, a lead block with a weight of two kilograms is naturally dropped from a height of 50 cm, and no rupture of the line card occurs.

[0031] The embodiment of the utility model is explained in detail above in combination with the drawings, but the utility model is not limited to the above-mentioned one embodiment, all other embodiments obtained by the person skilled in the art without making the creative labor belong to the range of the utility model protection.

Claims

1. A cryogenic wire card, characterized by, Including upper cover (1), lower cover (2) and several fixed bolts (3), the lower cover (2) is equipped with several nuts (4), the upper cover (1) is equipped with several first through holes (5) corresponding with the nut (4), the fixed bolt (3) passes through the first through hole (5) and is connected with the nut (4) threadedly.

2. The cryogenic line card of claim 1, wherein, The lower cover (2) bottom is equipped with several counterbores (6), each counterbores (6) is equipped with a nut (4), the lower cover (2) is equipped with several second through holes (7) corresponding with the nut (4).

3. The cryogenic line card of claim 1, wherein, The lower cover (2) is equipped with several first bolt columns (8) corresponding with the nut (4), each first bolt column (8) is equipped with a second through hole (7), the upper cover (1) is equipped with several second bolt columns (10) corresponding with the first bolt column (8), each second bolt column (10) is equipped with the first through hole (5), each first bolt column (8) upper end is equipped with a clamping groove (12), each second bolt column (10) bottom end is equipped with a protrusion (13) for clamping into the clamping groove (12).

4. The cryogenic line card of claim 1, wherein, The lower cover (2) is equipped with mounting groove (14), the mounting groove (14) is equipped with spring leaf (15).

5. The cryogenic line card of claim 4, wherein, The spring leaf (15) includes four side edges (151), each side edge (151) bottom end is protruding part (152), each protruding part (152) both ends is equipped with clamping block (153), the mounting groove (14) includes four insertion slots (141) corresponding with the side edge (151), each protruding part (152) is clamped in one of the insertion slots (141) and two clamping blocks (153) are in contact with the insertion slot (141) both ends side wall.

6. The cryogenic line card of claim 1, wherein, The upper cover (1) and the lower cover (2) wall thickness are all greater than 2cm.

7. The cryogenic line card of claim 1, wherein, The upper cover (1) and the lower cover (2) are all made of low temperature resistant material, and the low temperature resistant material is abs modified material.

8. The cryogenic line card of claim 1, wherein, The fixed bolt (3) and the nut (4) are all four.

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