CN216013576U - Circuit detection switching device - Google Patents

Abstract

The utility model discloses a circuit detection switching device which comprises a base, a first electric connection assembly, a second electric connection assembly, a third electric connection assembly and a displacement transmission mechanism, wherein the first electric connection assembly and the second electric connection assembly are arranged on the base, the first electric connection assembly is provided with a first electric connection hole group, the second electric connection assembly is provided with a second electric connection hole group, the third electric connection assembly is positioned between the first electric connection assembly and the second electric connection assembly, the third electric connection assembly is provided with an electric connection jack group, one end of the electric connection jack group faces the first electric connection hole group, the other end of the electric connection jack group faces the second electric connection hole group, the displacement transmission mechanism is arranged on the base, and the displacement transmission mechanism is connected with the third electric connection assembly so that one end of the electric connection jack group can be inserted into the first electric connection hole group or the other end of the electric connection jack group can be inserted into the second electric connection. The utility model can improve the accuracy of the detection result and bring convenience to operators.

Description

Circuit detection switching device

Technical Field

The utility model relates to the field of circuit detection equipment, in particular to a circuit detection switching device.

Background

At present, in the process of circuit testing, different detection modules are generally adopted to detect the same module to be tested, and at the moment, a circuit detection switching device is needed to be used to enable the different detection modules to be respectively and independently electrically connected with the module to be tested. The existing circuit detecting and switching device generally comprises a first electric connection assembly, a second electric connection assembly and a third electric connection assembly which are provided with a plurality of connection ends, wherein the third electric connection assembly can swing to be in contact with the first electric connection assembly or the second electric connection assembly, and then the plurality of connection ends on the third electric connection assembly can be in one-to-one contact with the plurality of connection ends of the first electric connection assembly or the plurality of connection ends on the second electric connection assembly respectively.

However, in the conventional circuit detection switching device, because the third electrical connection component swings between the first electrical connection component and the second electrical connection component, when the third electrical connection component contacts with the first electrical connection component or the second electrical connection component, an included angle exists between the third electrical connection component and the first electrical connection component or the second electrical connection component, which may cause that the connection ends cannot be in good contact with each other, and the accuracy of the detection result is affected. In addition, the third electric connection assembly occupies a large space required by swinging, and inconvenience is brought to operators.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve one of the existing technical problems, and therefore, the utility model provides a line detection switching device which can improve the accuracy of a detection result and bring convenience to operators.

A circuit detection switching apparatus according to the present invention includes a base, a first electrical connection unit provided on the base, a second electrical connection unit provided with a first electrical connection hole group, a second electrical connection unit provided on the base, a third electrical connection unit provided between the first electrical connection unit and the second electrical connection unit, an electrical connection jack group provided on the third electrical connection unit, one end of the electrical connection jack group facing the first electrical connection hole group, the other end of the electrical connection jack group facing the second electrical connection hole group, and a displacement transmission mechanism provided on the base, the displacement transmission mechanism being connected to the third electrical connection unit so as to be able to displace the third electrical connection unit between the first electrical connection unit and the second electrical connection unit, so that one end of the electrical connector set can be inserted into the first electrical hole set or the other end of the electrical connector set can be inserted into the second electrical hole set.

The line detection switching device provided by the utility model at least has the following beneficial effects:

the utility model provides a circuit detection switching device, which can make an electric connection insertion column group tightly contact with a first electric connection hole group and a second electric connection hole group no matter the electric connection insertion column group is inserted into the first electric connection hole group or the second electric connection hole group, thereby improving the accuracy of a detection result. Moreover, compared with the swinging motion mode of the third electric connection component in the prior art, the third electric connection component can linearly move between the first electric connection component and the second electric connection component, so that the occupied space of the whole device can be reduced, and convenience is brought to the operation of an operator. In addition, first electric connection assembly can be with outside first detection module electric connection, second electric connection assembly can be with outside second detection module electric connection, third electric connection assembly can be with outside module electric connection under test, operating personnel can independently control electric connection post group insert first electric connection group or second electric connection group in order to utilize first detection module or second detection module to detect the module under test.

According to some embodiments of the present invention, the electrical connection plug set includes a plurality of dual-headed pins penetrating the third electrical connection assembly, the plurality of dual-headed pins all protrude from a surface of the third electrical connection assembly, and displacement of the third electrical connection assembly between the first electrical connection assembly and the second electrical connection assembly enables one end of the plurality of dual-headed pins to be inserted into the first electrical connection set or enables the other end of the plurality of dual-headed pins to be inserted into the second electrical connection set.

According to some embodiments of the utility model, one end of each of the plurality of dual-headed pins faces the first set of electrical holes, and the other end of each of the plurality of dual-headed pins faces the second set of electrical holes.

According to some embodiments of the present invention, the first electrical connection assembly includes a first circuit board and a first terminal provided on the first circuit board, the first set of electrical vias is provided on the first circuit board and electrically connected with the first terminal, the second electrical connection assembly includes a second circuit board and a second terminal provided on the second circuit board, the second set of electrical vias is provided on the second circuit board and electrically connected with the second terminal, the third electrical connection assembly includes a third circuit board and a third terminal provided on the third circuit board, the set of electrical connection posts is provided on the third circuit board and electrically connected with the third terminal.

According to some embodiments of the utility model, the displacement transmission mechanism includes a driving component and a transmission component, the driving component is disposed on the base, the transmission component is respectively connected with the driving component and the third electrical connection component, and the driving component can drive the third electrical connection component to move.

According to some embodiments of the utility model, the drive assembly is an electric motor.

According to some embodiments of the utility model, the transmission assembly includes a screw connected to the driving end of the motor and a nut threadedly connected to the screw, the nut being connected to the third electrical connection assembly.

According to some embodiments of the utility model, the displacement transmission mechanism further comprises a guide member disposed on the base, the guide member being connected to the transmission member and/or the third electrical connection member to enable the third electrical connection member to be displaced in a straight line between the first electrical connection member and the second electrical connection member.

According to some embodiments of the present invention, the guide assembly includes a guide seat and a guide rod, the guide seat is disposed on the base, the guide seat is provided with a guide hole, the guide rod is movably disposed in the guide hole, and the guide rod is connected to the transmission assembly and/or the third electrical connection assembly.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the utility model.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 is a block diagram of a circuit detecting and switching device according to the present invention;

FIG. 2 is another block diagram of the circuit detecting and switching device of the present invention;

FIG. 3 is an internal structure diagram of the circuit detecting and switching device of the present invention;

fig. 4 is a structural view of the displacement transmission mechanism.

Reference numerals:

the device comprises a base 1, a first electric connection component 2, a first electric connection hole group 21, a first circuit board 22, a first terminal 23, a second electric connection component 3, a second electric connection hole group 31, a second circuit board 32, a second terminal 33, a third electric connection component 4, a third circuit board 41, a third terminal 42, an electric connection insertion column group 5, a displacement transmission mechanism 6, a driving component 61, a transmission component 62, a screw 621, a nut 622, a guide component 63, a guide seat 631 and a guide rod 632.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

In the description of the present invention, it is to be understood that directional descriptions, such as the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., refer to the directional or positional relationships illustrated in the drawings, and are intended to facilitate the description of the utility model and to simplify the description, but do not indicate or imply that the elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the utility model.

In the description of the present invention, the meaning of a plurality of means is one or more, the meaning of a plurality of means is two or more, and larger, smaller, larger, etc. are understood as excluding the number, and larger, smaller, inner, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present invention, it should be noted that unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

A circuit detecting and switching apparatus according to the present invention, as shown in fig. 1 to 4, includes a base 1, a first electrical connecting member 2, a second electrical connecting member 3, a third electrical connecting member 4, and a displacement transmission mechanism 6, the first electrical connecting member 2 being provided on the base 1, the first electrical connecting member 2 being provided with a first electrical connecting hole set 21, the second electrical connecting member 3 being provided on the base 1, the second electrical connecting member 3 being provided with a second electrical connecting hole set 31, the third electrical connecting member 4 being located between the first electrical connecting member 2 and the second electrical connecting member 3, the third electrical connecting member 4 being provided with an electrical connecting post set 5, one end of the electrical connecting post set 5 being directed to the first electrical connecting hole set 21, the other end of the electrical connecting post set 5 being directed to the second electrical connecting hole set 31, the displacement transmission mechanism 6 being provided on the base 1, the displacement transmission mechanism 6 being connected to the third electrical connecting member 4 so as to be able to displace the third electrical connecting member 4 between the first electrical connecting member 2 and the second electrical connecting member 3, so that one end of the electrical post set 5 can be inserted into the first electrical hole set 21 or the other end of the electrical post set 5 can be inserted into the second electrical hole set 31.

The utility model provides a circuit detection switching device, wherein an electric connection plug group 5 can be tightly contacted with a first electric connection hole group 21 or a second electric connection hole group 31 no matter the electric connection plug group is inserted into the first electric connection hole group or the second electric connection hole group, and the accuracy of a detection result is improved. Moreover, compared with the swinging motion mode of the third electric connection component in the prior art, the third electric connection component 4 can linearly move between the first electric connection component 2 and the second electric connection component 3, so that the occupied space of the whole device can be reduced, and convenience is brought to the operation of an operator. In addition, the first electrical connection component 2 can be electrically connected with an external first detection module, the second electrical connection component 3 can be electrically connected with an external second detection module, the third electrical connection component 4 can be electrically connected with an external module to be detected, and an operator can independently control the electrical connection jack group 5 to be inserted into the first electrical connection jack group 21 or the second electrical connection jack group 31 so as to detect the module to be detected by using the first detection module or the second detection module.

Specifically, the holes of the first electrical via set 21 and the holes of the second electrical via set 31 are generally circular holes with the same size, and the holes may be through holes or blind holes.

It should be noted that the electrical connection plug group 5 cannot be inserted into the first electrical connection hole group 21 and the second electrical connection hole group 31 at the same time, which can avoid the occurrence of the condition that different detection modules are electrically connected with the module to be detected at the same time to cause mutual interference, and ensure the accuracy of the detection result.

In some embodiments of the present invention, as shown in fig. 1-3, the electrical connection post set 5 includes a plurality of dual-headed pins passing through the third electrical connection element 4, the plurality of dual-headed pins all protruding from the surface of the third electrical connection element 4, and the third electrical connection element 4 is displaced between the first electrical connection element 2 and the second electrical connection element 3 such that one end of the plurality of dual-headed pins can be inserted into the first electrical connection hole set 21, or such that the other end of the plurality of dual-headed pins can be inserted into the second electrical connection hole set 31.

In particular, since the thickness of the third electrical connection element 4 is generally about 2mm, if an excessive number of single-ended pins are machined on the third electrical connection element 4, the machining difficulty is increased and the machining process is complicated. Wear to establish double-end thimble and can reduce the thimble quantity of required processing on this third electricity links subassembly 4, the processing of being convenient for has also simplified the structure of third electricity links subassembly 4 simultaneously.

In some embodiments of the present invention, as shown in FIGS. 1-3, one end of the plurality of dual-headed pins is aligned with the first set of electrical vias 21 and the other end of the plurality of dual-headed pins is aligned with the second set of electrical vias 31.

Specifically, this enables the electrical jack group 5 to be accurately inserted into the first electrical jack group 21 or the second electrical jack group 31, while making the line detection switching device as a whole more beautiful.

In some embodiments of the present invention, as shown in fig. 1 to 3, the first electrical connection assembly 2 includes a first circuit board 22 and a first terminal 23 disposed on the first circuit board 22, the first electrical connection hole set 21 is disposed on the first circuit board 22 and the first electrical connection hole set 21 is electrically connected to the first terminal 23, the second electrical connection assembly 3 includes a second circuit board 32 and a second terminal 33 disposed on the second circuit board 32, the second electrical connection hole set 31 is disposed on the second circuit board 32 and the second electrical connection hole set 31 is electrically connected to the second terminal 33, the third electrical connection assembly 4 includes a third circuit board 41 and a third terminal 42 disposed on the third circuit board 41, the electrical connection post set 5 is disposed on the third circuit board 41 and the electrical connection post set 5 is electrically connected to the third terminal 42.

Specifically, the first circuit board 22 can be electrically connected to an external first detection module through the first terminal 23, the second circuit board 32 can be electrically connected to an external second detection module through the second terminal 33, and the third circuit board 41 can be electrically connected to an external module under test through the third terminal 42. When the electric connection plug column group 5 is inserted into the first electric connection hole group 21, the electric connection plug column group 5 is electrically connected with the first electric connection hole group 21, and the first detection module can detect a module to be detected; when the electric connection jack group 5 is inserted into the second electric connection jack group 31, the electric connection jack group 5 is electrically connected with the second electric connection jack group 31, and the second detection module can detect the module to be detected.

In addition, in an embodiment of the present invention, there is only one first terminal 23, one second terminal 33 and one third terminal 42, and the first terminal 23, the second terminal 33 and the third terminal 42 are pin terminals having sixty pins, which can simplify the structure of the entire line detection switching device; in another embodiment of the present invention, there are two first terminals 23, two second terminals 33 and three third terminals 42, and each of the first terminals 23, the second terminals 33 and the third terminals 42 is a pin terminal having thirty pins, which can facilitate the layout of the wires on the first electrical connector 2, the second electrical connector 3 and the third electrical connector 4.

In some embodiments of the present invention, as shown in fig. 1 to 3, the displacement transmission mechanism 6 includes a driving component 61 and a transmission component 62, the driving component 61 is disposed on the base 1, the transmission component 62 is respectively connected to the driving component 61 and the third electrical connection component 4, and the driving component 61 can drive the third electrical connection component 4 to move.

Specifically, the driving member 61 can provide power required for the movement of the third electrical connection member 4, and the transmission member 62 can transmit the power provided by the driving member 61 to the third electrical connection member 4. The operator can control the direction and magnitude of the power provided by the driving assembly 61, and thus the moving direction and moving stroke of the third electrical connection assembly 4.

In some embodiments of the present invention, the drive assembly 61 is a motor.

Specifically, an operator can drive the transmission assembly 62 and the third electrical connection assembly 4 to move by controlling the rotation direction and the rotation speed of the motor, when the motor pulls the transmission assembly 62, the third electrical connection assembly 4 is pulled to the first electrical connection assembly 2, and then the electrical connection jack group 5 is inserted into the first electrical connection jack group 21; when the motor pushes the transmission assembly 62, the third electrical connection assembly 4 is pushed toward the second electrical connection assembly 3, so that the electrical connector assembly 5 is inserted into the second electrical hole assembly 31.

In one embodiment of the present invention, as shown in fig. 3 and 4, the transmission assembly 62 includes a screw 621 and a nut 622 threadedly connected to the screw 621, the screw 621 is connected to the driving end of the motor, and the nut 622 is connected to the third electrical connection assembly 4.

Specifically, the screw 621 is generally coaxially connected with the output shaft of the motor, a male thread is provided on the screw 621, a female thread is provided on the screw 622, the male thread on the screw 621 can be mutually matched with the female thread on the screw 622, when the motor drives the screw 621 to rotate, the friction force between the screw 621 and the screw 622 can drive the screw 622 to move, and then the third electrical connection assembly 4 is driven to move between the first electrical connection assembly 2 and the second electrical connection assembly 3. Therefore, the structure of the transmission assembly 62 is simple, and the transmission precision of the transmission assembly 62 is improved.

Further, in order to achieve higher precision, the nut 622 may adopt a reverse backlash elimination nut, so as to eliminate backlash error which may be generated when the motor moves.

In some embodiments of the present invention, the driving assembly 61 is an air cylinder, the transmission assembly 62 includes a guide rail disposed on the base 1 and a slider movably disposed on the guide rail, the slider is respectively connected to the air cylinder and the third electrical connection assembly 4, and the air cylinder can drive the slider to move along the guide rail, so as to drive the third electrical connection assembly 4 to move.

In some embodiments of the present invention, as shown in fig. 3 and 4, the displacement transmission mechanism 6 further includes a guiding member 63 disposed on the base 1, and the guiding member 63 is connected to the transmission member 62 and/or the third electrical connection member 4 to drive the third electrical connection member 4 to displace in a straight line between the first electrical connection member 2 and the second electrical connection member 3.

Specifically, the guiding component 63 enables the third electrical connection component 4 not to move towards other directions except for being capable of linearly displacing towards the first electrical connection component 2 and being capable of linearly displacing towards the second electrical connection component 3, which can ensure that after the first electrical connection hole set 21 and the second electrical connection hole set 31 are respectively opposite to the electrical connection insertion column set, the electrical connection insertion column set can be accurately inserted into the first electrical connection hole set 21 or the second electrical connection hole set 31 under the driving of the driving component 61.

In particular, if the transmission element 62 comprises a screw 621 and a nut 622 in threaded connection with the screw 621, the screw 621 is connected to the motor, the nut 622 is connected to the third electrical connection element 4, and when the screw 621 rotates, the guiding element 63 can prevent the nut 622 from rotating with the screw 621, so that the nut 622 only linearly displaces, and the third electrical connection element 4 is driven to linearly displace between the first electrical connection element 2 and the second electrical connection element 3.

In some embodiments of the present invention, as shown in fig. 4, there are at least two guiding elements 63, and two guiding elements 63 can make the third electrical connection element 4 more stable during movement, and reduce the occurrence of jitter.

In some embodiments of the present invention, as shown in fig. 4, the guiding assembly 63 includes a guiding seat 631 and a guiding rod 632, the guiding seat 631 is disposed on the base 1, the guiding seat 631 is provided with a guiding hole, the guiding rod 632 is movably disposed in the guiding hole, and the guiding rod 632 is connected to the transmission assembly 62 and/or the third electrical connection assembly 4.

Specifically, when the driving assembly 1 drives the transmission assembly 2 to move, the guide rod 632 moves in the guide hole, and when the guide rod 632 tends to move in other directions except the length direction of the guide hole, the inner side wall of the guide hole applies force to the guide rod 632, thereby preventing the guide rod from moving in other directions except the length direction of the guide hole. In one embodiment of the present invention, the guide hole is a circular hole, and the guide rod 632 is a circular rod; in another embodiment of the present invention, the guide holes are square holes and the guide rods 632 are square rods.

It should be noted that in the embodiment where the transmission assembly 62 includes the screw 621 and the nut 622, the guide rod 632 is connected to the third electrical connection assembly 4, and the guide seat 631 can limit the third electrical connection assembly 4 to move only in a straight line; or the guide rod 632 is connected with the nut 622, and at this time, the guide seat 631 can limit the nut 622 to only perform linear motion; or the nut 622 is connected to the third electrical connection component 4 through the guide rod 632, and at this time, the guide seat 631 can limit the nut 622 and the third electrical connection component 4 to only perform linear motion.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

While embodiments of the utility model have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the utility model, the scope of which is defined by the claims and their equivalents.

Claims (9)

1. A line detection switching apparatus, comprising:

a base (1);

the first electric connection component (2) is arranged on the base (1), and a first electric connection hole group (21) is arranged on the first electric connection component (2);

the second electric connection component (3) is arranged on the base (1), and a second electric connection hole group (31) is arranged on the second electric connection component (3);

a third electrical connection assembly (4) located between the first electrical connection assembly (2) and the second electrical connection assembly (3), wherein an electrical connection jack set (5) is arranged on the third electrical connection assembly (4), one end of the electrical connection jack set (5) faces the first electrical connection jack set (21), and the other end of the electrical connection jack set (5) faces the second electrical connection jack set (31);

a displacement transmission mechanism (6) disposed on the base (1), the displacement transmission mechanism (6) being connected with the third electrical connection component (4) so as to enable the third electrical connection component (4) to displace between the first electrical connection component (2) and the second electrical connection component (3) so that one end of the electrical connection jack group (5) can be inserted into the first electrical connection jack group (21) or the other end of the electrical connection jack group (5) can be inserted into the second electrical connection jack group (31).

2. A line sensing switching arrangement as claimed in claim 1, wherein: the electricity is even inserted column group (5) and is including a plurality of wear to establish double-end thimble on third electricity link subassembly (4), and is a plurality of double-end thimble all protrudes in the surface of third electricity link subassembly (4), third electricity link subassembly (4) is in first electricity link subassembly (2) with the second electricity is even the displacement between subassembly (3) can make a plurality ofly the one end of double-end thimble can insert first electricity link group (21), perhaps makes a plurality ofly the other end of double-end thimble can insert second electricity link group (31).

3. A line detection switching apparatus as claimed in claim 2, wherein: a plurality of the one end of double-end thimble with first electric hole group (21) just right, it is a plurality of the other end of double-end thimble with second electric hole group (31) just right.

4. A line sensing switching arrangement as claimed in claim 1, wherein: the first electrical connection assembly (2) includes a first circuit board (22) and a first terminal (23) provided on the first circuit board (22), the first electrical connection hole group (21) is provided on the first circuit board (22) and the first electrical connection hole group (21) is electrically connected with the first terminal (23), the second electrical connection assembly (3) includes a second circuit board (32) and a second terminal (33) provided on the second circuit board (32), the second electrical connection hole group (31) is provided on the second circuit board (32) and the second electrical connection hole group (31) is electrically connected with the second terminal (33), the third electrical connection assembly (4) includes a third circuit board (41) and a third terminal (42) provided on the third circuit board (41), the electrical connection plug group (5) is provided on the third circuit board (41) and the electrical connection plug group (5) is electrically connected with the third terminal (42) And (4) connecting.

5. A line sensing switching arrangement as claimed in claim 1, wherein: the displacement transmission mechanism (6) comprises a driving assembly (61) and a transmission assembly (62), the driving assembly (61) is arranged on the base (1), the transmission assembly (62) is connected with the driving assembly (61) and the third electric connection assembly (4) respectively, and the driving assembly (61) can drive the third electric connection assembly (4) to move.

6. A line detection switching apparatus as claimed in claim 5, wherein: the driving component (61) is a motor.

7. A line detection switching apparatus as claimed in claim 6, wherein: the transmission assembly (62) comprises a screw rod (621) and a nut (622) in threaded connection with the screw rod (621), the screw rod (621) is connected with the driving end of the motor, and the nut (622) is connected with the third electric connection assembly (4).

8. A line detection switching apparatus as claimed in claim 5, wherein: the displacement transmission mechanism (6) further comprises a guide component (63) arranged on the base (1), wherein the guide component (63) is connected with the transmission component (62) and/or the third electrical connection component (4) so that the third electrical connection component (4) can be displaced along a straight line between the first electrical connection component (2) and the second electrical connection component (3).

9. A line sensing switching apparatus as claimed in claim 8, wherein: guide subassembly (63) are including guide holder (631) and guide arm (632), guide holder (631) set up on base (1), be provided with the guide hole on guide holder (631), guide arm (632) activity is worn to establish in the guide hole, guide arm (632) with transmission assembly (62) and/or third electricity links subassembly (4) and connects.

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