CN221227436U - Couple and photovoltaic support subassembly - Google Patents

Abstract

The utility model relates to the technical field of new energy sources, and provides a hook and a photovoltaic bracket assembly, wherein the hook comprises a hook body and a clamping piece arranged on the hook body, at least part of the clamping piece is arranged at an included angle with the hook body and is used for being matched with a bracket structure, a first connecting hole is formed in the bracket structure, and the clamping piece is used for being clamped into the first connecting hole; the utility model can simplify the assembly of the hook and the second bracket, thereby improving the convenience of the assembly of the hook and the second bracket, and the first connecting hole is provided with a limit on the clamping piece along the extending direction vertical to the bracket structure, so that the bracket structure cannot be separated from the clamping piece of the hook by external force such as wind force, thereby improving the assembly stability of the bracket structure and the hook.

Description

Couple and photovoltaic support subassembly

Technical Field

The utility model relates to the technical field of new energy, in particular to a hook and a photovoltaic bracket assembly.

Background

The photovoltaic power generation system can be arranged at desert, lake surface, balcony and the like, and for the balcony photovoltaic system, the photovoltaic panel is mainly arranged on a guardrail of the balcony through a photovoltaic bracket assembly at present; the photovoltaic bracket assembly mainly comprises a hook and a bracket structure, wherein the hook is connected with the guardrail, the bracket structure is used for installing a photovoltaic panel, a plurality of bolt holes are formed in the bracket structure and the hook, each bolt fastener penetrates through each bolt hole in the hook and the bracket structure in a one-to-one correspondence manner, and therefore the hook is stably installed at the end part of the bracket structure.

However, when the hook is assembled with the bracket structure in a butt joint way, the hook and the hole sites on the bracket structure are needed to be aligned one by one, and then a plurality of bolt fasteners are respectively penetrated into the corresponding screw holes, so that the assembly of the hook and the bracket structure is more complicated, and the assembly efficiency of the hook and the bracket structure is reduced.

Disclosure of utility model

The utility model solves the problem of simplifying the assembly of the hook and the bracket so as to improve the assembly efficiency of the hook and the bracket.

In order to solve the problems, the utility model provides a hook which comprises a hook body and a clamping piece arranged on the hook body, wherein at least part of the clamping piece is arranged at an included angle with the hook body, the clamping piece is used for being matched with a support structure, a first connecting hole is formed in the support structure, and the clamping piece is used for being clamped into the first connecting hole.

Optionally, the couple includes two at least the joint spare, two at least the joint spare interval set up in on the couple body, be equipped with a plurality of on the supporting structure first connecting hole, and a plurality of first connecting hole is followed the extending direction of supporting structure distributes, two at least the joint spare card respectively goes into in the different positions in the first connecting hole.

Optionally, the hook further includes a first fastener, a second connecting hole is formed in the hook body, the second connecting hole is located between two of the clamping pieces, and the first fastener penetrates through the second connecting hole and the first connecting hole, so that the hook is mounted on the support structure.

Optionally, a pressing hole is formed in the hook body, and the hook body is bent at the pressing hole to form the clamping piece.

Optionally, the clamping piece and the hook body are integrally formed.

Optionally, the hook body is bent at the press hole by adopting a punching process to form the clamping piece.

Optionally, the couple body includes couple portion and connecting portion, be equipped with on the connecting portion the joint spare, connecting portion pass through the joint spare with the support structure the first connecting hole is connected, the tip of connecting portion is to keeping away from support structure's direction is bent in order to form couple portion.

Optionally, the hook further comprises a second fastener, a third connecting hole is formed in the connecting portion, a fourth connecting hole is formed in the hook portion, and the second fastener penetrates through the first connecting hole, the third connecting hole and the fourth connecting hole.

Compared with the prior art, the hook comprises the hook body and the clamping piece, when the photovoltaic bracket assembly is assembled, the clamping piece is matched with the bracket structure, and particularly, the hook body can be clamped into the first connecting hole on the bracket structure through the clamping piece, so that the assembly of the hook and the bracket structure is simplified, and the convenience of the assembly of the hook and the bracket structure is improved; the hook body can be hung on a balcony such as a guardrail, and at least part of the clamping piece and the hook body are arranged at an included angle, so that the clamping piece is limited along the extending direction perpendicular to the support structure when being clamped into the first connecting hole of the support structure, the support structure cannot be separated from the clamping piece of the hook due to external force such as wind force, and the assembly stability of the support structure and the hook is improved.

The utility model also provides a photovoltaic bracket assembly, which comprises a bracket structure and the hooks, wherein the bracket structure comprises a first bracket and a second bracket, the first bracket and the second bracket are arranged at an included angle, the first bracket is used for installing a photovoltaic panel, and the second bracket is provided with the first connecting hole.

Therefore, the photovoltaic bracket assembly at least has all technical effects of the hooks because the photovoltaic bracket assembly comprises the hooks, and the description is omitted here.

Optionally, the first connecting hole is a bar-shaped hole structure, and the length direction of the bar-shaped hole structure is consistent with the extending direction of the second bracket.

Drawings

FIG. 1 is a schematic structural view of a photovoltaic module of the prior art;

fig. 2 is a schematic structural diagram of a photovoltaic bracket assembly according to an embodiment of the present utility model;

FIG. 3 is an enlarged schematic view of FIG. 2A;

FIG. 4 is a schematic view of a hook according to an embodiment of the present utility model;

fig. 5 is a schematic structural view of a connection between a hook and a second bracket in an embodiment of the present utility model.

Reference numerals illustrate:

1' -a first scaffold; 2' -a second scaffold; 3' -hook; 4' -bolt fasteners;

1-a first bracket; 2-a second bracket; 21-a first connection hole; 31-a hook body; 311-second connection holes; 312-pressing holes; 313-hook portion; 314-a connection; 315-a third connection hole; 316-fourth connection hole; 32-clamping pieces; 4-a first fastener; 5-a second fastener.

Detailed Description

The photovoltaic power generation system can be arranged at desert, lake surface, balcony and the like, and for the balcony photovoltaic system, the photovoltaic panel is mainly arranged on a guardrail of the balcony through a photovoltaic bracket assembly at present; wherein, combine the fig. 1 to show, photovoltaic support subassembly mainly includes couple 3' and support, couple 3' is connected with the guardrail, and the support includes first support 1' and second support 2', and first support 1' is the contained angle with second support 2' and is connected, can install the photovoltaic board on first support 1', and all offer a plurality of bolt holes on second support 2' and couple 3', each bolt fastener 4' one-to-one wears to locate each bolt hole on couple 3' and the second support 2' to realize steadily installing couple 3' in the tip of support.

However, when the hook 3 'is assembled with the bracket in a butt joint way, the hole positions on the hook 3' and the second bracket 2 'are required to be aligned one by one, and then the bolt fasteners 4' are respectively penetrated into the corresponding bolt holes, so that the assembly of the hook 3 'and the bracket is more complicated, and the assembly efficiency of the hook 3' and the bracket is reduced.

In order that the above objects, features and advantages of the utility model will be readily understood, a more particular description of the utility model will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings.

It should be noted that the terms "first," "second," and the like in the description and the claims of the present utility model and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the utility model described herein may be implemented in sequences other than those illustrated or otherwise described herein.

In the description of the present utility model, it should be noted that, unless explicitly stated and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; may be a mechanical connection; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

In the description of the present specification, the descriptions of the terms "embodiment," "one embodiment," and the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or embodiment is included in at least one embodiment or implementation of the present utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same examples or implementations. Furthermore, the particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or implementations.

In order to solve the above technical problems, referring to fig. 2 and 3, an embodiment of the present utility model provides a hook, which includes a hook body 31 and a clamping member 32 disposed on the hook body 31, at least a portion of the clamping member 32 is disposed at an included angle with the hook body 31, the clamping member 32 is configured to cooperate with a support structure, a first connection hole 21 is disposed on the support structure, and the clamping member 32 is configured to be clamped into the first connection hole 21.

It should be noted that, the hook body 31 is used for connecting a balcony, such as a guardrail, the clamping member 32 may be disposed on the hook body 31, and the clamping member 32 of the hook is connected with the first connecting hole 21 on the support structure, so as to realize the mating connection of the clamping member 32 and the support structure.

Wherein, as shown in fig. 4, at least a portion of the clamping member 32 and the hook body 31 are disposed at an included angle, that is, the clamping member 32 is disposed at an acute angle with the hook body 31 at a portion connected with the hook body 31, and other portions of the clamping member 32 are parallel or substantially tend to be parallel with the hook body 31, so that a space exists between the whole clamping member 32 and the hook body 31, and when the clamping member 32 is clamped into the first connecting hole 21, a local position of the bracket structure is located in the space between the clamping member 32 and the hook body 31, so that the first connecting hole 21 has a limit on the clamping member 32 along an extending direction perpendicular to the bracket structure.

The hook in this embodiment includes a hook body 31 and a clamping piece 32, when the photovoltaic bracket assembly is assembled, the hook body 31 can be clamped into the first connecting hole 21 on the second bracket 2 through the clamping piece 32, so as to simplify the assembly of the hook and the second bracket 2, and thus improve the convenience of the assembly of the hook and the second bracket 2; the hook body 31 may be hung on a balcony, such as a guardrail, and at least a portion of the fastening member 32 and the hook body 31 are disposed at an included angle, so that when the fastening member 32 is fastened into the first connection hole 21 of the second bracket 2, the first connection hole 21 limits the fastening member 32 along the extending direction perpendicular to the second bracket 2, and the second bracket 2 cannot be separated from the fastening member 32 of the hook due to external force, such as wind force, so as to improve the assembly stability of the second bracket 2 and the hook. The first bracket 1 and the second bracket 2 form an included angle, the first bracket 1 is used for installing the photovoltaic panel, and the hook is hung on a balcony such as a guardrail, so that the photovoltaic panel is obliquely installed on the balcony.

Wherein, combine the fig. 3 to show, the supporting structure can be including being the contained angle setting first support 1 with second support 2, be used for installing the photovoltaic board on the first support 1, be equipped with on the second support 2 with the first connecting hole 21 of joint 32 joint can be through the contained angle of adjusting two supports at this moment to the installation angle of adjustment photovoltaic board. For another example, the support structure may also include only one second support 2, in which case the photovoltaic panel may be directly mounted on the second support 2, and the first connection hole 21 on the second support 2 is clamped with the clamping member 32.

In an embodiment of the present utility model, as shown in fig. 3 to 5, the hook includes at least two clamping members 32, at least two clamping members 32 are disposed on the hook body 31 at intervals, the support structure is provided with a plurality of first connection holes 21, the plurality of first connection holes 21 are distributed along an extending direction of the support structure, and at least two clamping members 32 are respectively clamped into the first connection holes 21 at different positions.

It should be noted that, the support structure may be configured in such a manner that, for example, the support structure includes a first support 1 and a second support 2 that are disposed at an included angle, the first support 1 is used for mounting a photovoltaic panel, the second support 2 may be provided with a plurality of first connection holes 21, the plurality of first connection holes 21 are distributed along an extending direction of the second support 2, and at least two clamping members 32 are respectively clamped into the first connection holes 21 at different positions, in other words, the hooks may be mounted at different positions on the second support 2 through the clamping members 32, so that the mounting positions of the hooks on the second support 2 may be adjusted according to different heights of a balcony, such as a guardrail, to change the distances between the hooks at the bottom ends of the second support 2, and thus be suitable for different mounting situations; in addition, because at least two clamping pieces 32 in the hook are respectively clamped with the first connecting holes 21 at different positions of the second support 2, the connecting area or length of the second support 2 and the hook in the extending direction of the second support is increased, the hook cannot shake relatively after being connected with the second support 2, the connecting strength and stability of the hook and the second support 2 are further enhanced, and even if severe environments such as strong wind are encountered, the connecting part between the second support 2 and the hook cannot be separated, so that the hook can be suitable for installation scenes of the severe environments.

Specifically, the number of the clamping pieces 32 in the hooks is smaller than the number of the first connecting holes 21 in the second bracket 2, so that the hooks can be installed in the middle position of the second bracket 2 in the upper area to meet the installation requirements of different heights of balconies such as guardrails.

Preferably, as shown in fig. 4, the number of the clamping members 32 is two, so that not only the assembly efficiency of the hook and the second bracket 2 is improved, but also the connection strength and stability of the hook and the second bracket 2 can be ensured.

Optionally, the hook may also include a clamping member 32, that is, the hook body 31 is clamped with the first connecting hole 21 of the second bracket 2 by the clamping member 32, and quick connection between the hook and the second bracket 2 may also be achieved. In addition, the ends of the first bracket 1 and the second bracket 2 can be connected through a pin shaft, so that the included angle between the first bracket 1 and the second bracket 2 can be flexibly adjusted according to different installation places, and the inclination angle of the photovoltaic panel can be correspondingly adjusted.

In one embodiment of the present utility model, as shown in fig. 3 to 5, the hook further includes a first fastening member 4, the hook body 31 is provided with a second connection hole 311, the second connection hole 311 is located between two of the clamping members 32, and the first fastening member 4 is disposed through the second connection hole 311 and the first connection hole 21, so as to mount the hook on the support structure.

It should be noted that after the at least two clamping pieces 32 are respectively clamped into the first connecting holes 21 at different positions, the first fastening piece 4 is inserted into the first connecting hole 21 on the second bracket 2 and the second connecting hole 311 on the hook body 31, which is located between the two clamping pieces 32, at this time, the first fastening piece 4 is located between two adjacent clamping pieces 32, so that in the extending direction of the second bracket 2, the connecting force of the at least two clamping pieces 32 and the first fastening piece 4 is provided between the second bracket 2 and the hook body 31 of the bracket structure, so that by increasing the connecting point of the first bracket 1 and the hook body 31, no relative shaking is generated after the hook is connected with the second bracket 2, and the connecting strength and stability of the hook and the second bracket 2 are further enhanced; and after the hook is clamped with the first connecting hole 21 of the second bracket 2 through the clamping piece 32, only one first fastener 4 is required to be installed at the second connecting hole 311, so that the use of parts of the photovoltaic bracket assembly can be reduced, the cost can be saved, and the installation efficiency of the hook and the second bracket 2 of the bracket structure can be improved under the condition of enhancing the connection stability of the hook and the second bracket 2.

Specifically, the first fastener 4 may be a bolt fastener structure; the second connecting hole 311 on the hook body 31 may be formed by punching.

In one embodiment of the present utility model, the second connection hole 311 is a circular hole structure.

It should be noted that, the second connecting hole 311 is limited to a circular hole structure, and a bar-shaped hole or an elliptical hole is not adopted, so that after the second bracket 2 of the hook and the bracket structure is attached to the bracket structure, the contact area between the hook and the connection part of the second bracket 2 and the hook and the air is reduced, the corrosion degree of the connection part of the hook and the second bracket 2 and the hook can be reduced, and the service life of the hook and the second bracket 2 is correspondingly prolonged.

In one embodiment of the present utility model, as shown in fig. 4 and 5, the hook body 31 is provided with a pressing hole 312, and the hook body 31 is bent at the pressing hole 312 to form the clamping piece 32.

It should be noted that, the pressing hole 312 is formed on the hook body 31, and the hook body 31 can be bent upward at the position of the pressing hole 312 to form the clamping piece 32, in other words, the clamping piece 32 is bent upward from the pressing hole 312 to be equivalent to a barb structure, so that the second bracket 2 can be hung on the clamping piece 32 on the hook body 31 through the first connecting hole 21, after the first bracket 1 and the second bracket 2 are assembled, the self gravity of the first bracket 1 and the second bracket 2 is utilized to have downward pulling force on the hook, and the connection stability of the second bracket 2 and the hook is further enhanced.

Further, the clamping member 32 may be a plate structure, which may be a straight plate or an arc plate with a certain bending degree, so that when the clamping member 32 is clamped into the first connecting hole 21 of the second bracket 2 from bottom to top, the second bracket 2 and the first connecting hole 21 have five directions of restriction (no upward restriction) on the clamping member 32, but when the first fastening member 4 is penetrated through the second connecting hole 311 of the hook body 31 and the first connecting hole 21 of the second bracket 2, the first fastening member 4 is located between the two clamping members 32, so that the first fastening member 4 has six directions of restriction on the clamping member 32 in combination with the first connecting hole 21, and the connection stability of the hook and the second bracket 2 is further enhanced.

In one embodiment of the present utility model, the clamping member 32 and the hook body 31 are integrally formed.

It should be noted that, since the clamping piece 32 and the hook body 31 are integrally formed, the mechanical strength of the whole hook can be improved, and the service life of the hook can be correspondingly prolonged.

In one embodiment of the present utility model, the hook body 31 is bent at the press hole 312 by a punching process to form the clamping member 32.

It should be noted that, since the hook body 31 is bent at the press hole 312 by adopting a punching process to form the clamping piece 32, not only the processing efficiency of the hook body 31 and the clamping piece 32 can be improved, but also the mechanical strength of the whole hook can be improved. The stamping process is the prior art, and is not described herein.

In one embodiment of the present utility model, as shown in fig. 3 to 5, the hook body 31 includes a hook portion 313 and a connection portion 314, the connection portion 314 is provided with the fastening member 32, the connection portion 314 is connected to the first connection hole 21 of the bracket structure through the fastening member 32, and an end portion of the connection portion 314 is bent in a direction away from the bracket structure to form the hook portion 313.

It should be noted that, since the end of the connection portion 314 is bent in a direction away from the second bracket 2 of the bracket structure to form the hooking portion 313, the connection portion 314 is used to be clamped into the first connection hole 21 of the second bracket 2 by the clamping member 32, and the hooking portion 313 may be hung on a balcony, such as a guardrail, so that the entire photovoltaic bracket assembly is mounted on the balcony.

Specifically, the hooking portion 313 and the connecting portion 314 may be processed by a bending process, so that the hooking portion 313 and the connecting portion 314 are integrally formed, thereby improving the mechanical strength of the whole hooking and correspondingly prolonging the service life thereof.

In one embodiment of the present utility model, as shown in fig. 3 to 5, the hook further includes a second fastening member 5, a third connecting hole 315 is provided on the connecting portion 314, a fourth connecting hole 316 is provided on the hook portion 313, and the second fastening member 5 is disposed through the first connecting hole 21, the third connecting hole 315, and the fourth connecting hole 316.

It should be noted that, by providing the third connecting hole 315 on the connecting portion 314 of the hook and providing the fourth connecting hole 316 on the hook portion 313 of the hook, the third connecting hole 315 and the fourth connecting hole 316 may be coaxially disposed, so that when the hook portion 313 is sleeved on a balcony, for example, a guardrail, the second fastening member 5 may sequentially penetrate the first connecting hole 21 on the second bracket 2 of the bracket structure, and the third connecting hole 315 and the fourth connecting hole 316 on the hook, not only play a limiting role between the hook and the guardrail of the balcony, but also further enhance the connection stability and reliability of the hook and the second bracket 2.

In one embodiment of the utility model, the hanger is made of stainless steel material.

It should be noted that, the hook is made of stainless steel material, and because the stainless steel material has good corrosion resistance, the tensile strength is more than or equal to 470Mpa, so as to have good mechanical properties, when the hook is applied outdoors, the hook can bear multiple force values of the photovoltaic panel, such as more than five times, and can meet the requirement of ten years of no corrosion, and the service life of the hook is correspondingly prolonged.

Another embodiment of the present utility model provides a photovoltaic support assembly, including a support structure and the hook described above, where the support structure includes a first support 1 and a second support 2, the first support 1 and the second support 2 are disposed at an included angle, the first support 1 is used for mounting a photovoltaic panel, and the second support 2 is provided with the first connection hole 21.

It should be noted that, the photovoltaic panel may be mounted on the first bracket 1 through a structure such as a pressing plate, the second bracket 2 is connected with the first bracket 1 by an included angle, the clamping member 32 of the hook is connected with the first connecting hole 21 on the second bracket 2, and the hook body 31 may be hung on a balcony such as a guardrail, so as to implement the inclined mounting of the photovoltaic panel on the balcony through the first bracket 1 and the second bracket 2 in the bracket structure. The photovoltaic panel assembly has all technical effects of the photovoltaic bracket assembly and is not described herein.

The second bracket 2 can be vertically arranged, so that the first bracket 1 and the photovoltaic panel mounted on the first bracket 1 are also obliquely mounted, the photovoltaic panel can receive more sunlight, and the power generation effect of the photovoltaic panel is correspondingly improved.

In one embodiment of the present utility model, as shown in fig. 4 and 5, the first connecting hole 21 has a bar-shaped hole structure, and the length direction of the bar-shaped hole structure is consistent with the extending direction of the second bracket 2.

It should be noted that, since the first connecting hole 21 is of a strip-shaped hole structure, and the length direction of the strip-shaped hole structure is consistent with the extending direction of the second bracket 2, when the at least two clamping pieces 32 on the hook body 31 are respectively connected with the first connecting hole 21 of the strip-shaped hole structure, the clamping pieces 32 can move along the extending direction of the second bracket 2 in the first connecting hole 21, in other words, the clamping pieces 32 have a certain clamping distance in the corresponding first connecting hole 21, so that the at least two clamping pieces 32 can be smoothly clamped into the corresponding first connecting hole 21 of the second bracket 2, so as to avoid the influence of machining errors on the assembly operation of the clamping pieces 32 on the hook and the first connecting hole 21 on the second bracket 2.

Although the utility model is disclosed above, the scope of the utility model is not limited thereto. Various changes and modifications may be made by one skilled in the art without departing from the spirit and scope of the utility model, and these changes and modifications will fall within the scope of the utility model.

Claims (10)

1. The utility model provides a couple, its characterized in that includes couple body (31) and sets up joint spare (32) on couple body (31), at least part of joint spare (32) with couple body (31) are the contained angle setting, joint spare (32) are used for cooperating with supporting structure, be equipped with first connecting hole (21) on the supporting structure, joint spare (32) are used for the card to go into in first connecting hole (21).

2. The hook according to claim 1, characterized in that the hook comprises at least two clamping pieces (32), the at least two clamping pieces (32) are arranged on the hook body (31) at intervals, the support structure is provided with a plurality of first connecting holes (21), the plurality of first connecting holes (21) are distributed along the extending direction of the support structure, and the at least two clamping pieces (32) are respectively clamped into the first connecting holes (21) at different positions.

3. The hanger according to claim 2, further comprising a first fastener (4), wherein a second connecting hole (311) is provided on the hanger body (31), the second connecting hole (311) is located between two of the clamping members (32), and the first fastener (4) is provided through the second connecting hole (311) and the first connecting hole (21) to mount the hanger (3) on the supporting structure.

4. The hook according to claim 1, characterized in that the hook body (31) is provided with a press hole (312), and the hook body (31) is bent at the press hole (312) to form the clamping piece (32).

5. The hanger according to claim 1, wherein said clip (32) is integrally formed with said hanger body (31).

6. The hanger according to claim 4, wherein said hanger body (31) is bent at said press hole (312) using a punching process to form said snap (32).

7. The hanger according to any of the claims 1 to 6, characterized in that the hanger body (31) comprises a hanger part (313) and a connecting part (314), the connecting part (314) is provided with the clamping piece (32), the connecting part (314) is connected with the first connecting hole (21) of the bracket structure through the clamping piece (32), and the end part of the connecting part (314) is bent in a direction away from the bracket structure to form the hanger part (313).

8. The hanger according to claim 7, further comprising a second fastener (5), wherein a third connecting hole (315) is provided on the connecting portion (314), a fourth connecting hole (316) is provided on the hanger portion (313), and the second fastener (5) is provided through the first connecting hole (21), the third connecting hole (315) and the fourth connecting hole (316).

9. A photovoltaic support assembly, characterized by comprising a support structure and a hook according to any one of claims 1 to 8, wherein the support structure comprises a first support (1) and a second support (2), the first support (1) and the second support (2) are arranged at an included angle, the first support (1) is used for installing a photovoltaic panel, and the second support (2) is provided with a first connecting hole (21).

10. The photovoltaic bracket assembly according to claim 9, characterized in that the first connecting hole (21) is a bar-shaped hole structure, and the length direction of the bar-shaped hole structure is consistent with the extending direction of the second bracket (2).