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JP-2026074533-A - Mounting unit

JP2026074533AJP 2026074533 AJP2026074533 AJP 2026074533AJP-2026074533-A

Abstract

[Problem] To provide a mounting unit that can be removed more easily. [Solution] An attachment unit comprising an attachment 2 used to attach a device to a wall by engaging with the housing of the device to be installed on a wall, and a fixing pin 3 that is inserted through a pin insertion hole formed in the attachment 2 and driven into the wall, wherein the attachment unit comprises a pin insertion hole for inserting the fixing pin 3 and a first step portion 31 that exposes the lower surface 3c of the pin head 3a of the fixing pin 3 in at least one direction perpendicular to the insertion direction of the pin insertion hole, and a second step portion 32 formed in at least one direction of the first step portion 31. [Selection Diagram] Figure 4

Inventors

  • 兒玉 三四郎

Assignees

  • 矢崎エナジーシステム株式会社

Dates

Publication Date
20260507
Application Date
20241021

Claims (3)

  1. A mounting unit comprising: an attachment used to engage with the housing of a device to be installed on a wall and to mount the housing to the wall; and a fixing pin that is inserted through a pin insertion hole formed in the attachment and driven into the wall, A pin insertion hole for inserting the fixing pin is formed, and a first stage portion is provided which exposes the lower surface of the pin head of the fixing pin in at least one direction perpendicular to the insertion direction of the pin insertion hole, The second step portion formed in at least one direction of the first step portion, A mounting unit characterized by having the following features.
  2. The first stage portion has an upper portion that contacts at least a part of the lower surface of the pin head of the fixing pin, and a side portion that extends from the upper portion toward the wall surface. The mounting unit according to claim 1, characterized in that the fixing pin is not exposed from the side portion.
  3. The mounting unit according to claim 1, characterized in that the at least one direction is a direction that includes an upward component or a downward component when mounted on the wall surface.

Description

This invention relates to a mounting unit. Conventionally, mounting units have been proposed for attaching the housings of alarm devices such as gas alarms and fire alarms to walls (see Patent Documents 1 and 2). These mounting units can be attached to the wall by inserting fixing pins without using screws, resulting in a relatively simple mounting structure. Patent No. 4800682Patent No. 5223016 This is a perspective view of the mounting unit according to the first embodiment.This is a front view of the mounting unit according to the first embodiment.This is a cross-sectional view taken along line III-III in Figure 2.This is a cross-sectional view taken along line IV-IV in Figure 2.This is a front view showing the process of removing the fixing pin.This is a side view showing the process of removing the fixing pin.This is a partially enlarged cross-sectional view showing the process of removing the fixing pin.This is a plan view showing a mounting unit and a modified example according to the first embodiment, where (a) shows the vicinity of the first step portion of the first embodiment and (b) shows the vicinity of the first step portion of the modified example.This is a front view showing a mounting unit according to the second embodiment.This is a side view showing a mounting unit according to the second embodiment.This is a partially enlarged view of Figure 10.This figure shows a first modified example of the first stage, where (a) is a schematic top view and (b) is a schematic side view.This figure shows a second modified example of the first section, where (a) is a schematic top view and (b) is a schematic side view. The present invention will be described below in accordance with preferred embodiments. However, the present invention is not limited to the embodiments shown below, and can be modified as appropriate without departing from the spirit of the invention. Furthermore, in the embodiments shown below, some illustrations and descriptions of certain components are omitted. For details of the omitted technologies, publicly known or well-known technologies can be applied as appropriate, to the extent that they do not contradict the content described below. Figure 1 is a perspective view of the mounting unit according to the first embodiment, and Figure 2 is a front view of the mounting unit according to the first embodiment. Figure 3 is a cross-sectional view taken along line III-III in Figure 2, and Figure 4 is a cross-sectional view taken along line IV-IV in Figure 2. As shown in Figures 1 to 4, the mounting unit 1 comprises an attachment 2 that is roughly trapezoidal in front view, and two fixing pins 3. Each of the two fixing pins 3 has a pin head 3a and a pin portion 3b extending from the pin head 3a and penetrating the wall surface. Note that the number of fixing pins 3 is not limited to two; it may be one or three or more. Attachment 2 is used to attach a housing containing an alarm device, such as a gas alarm or fire alarm, to a wall surface. This attachment 2 generally comprises a base portion 10, an engaging portion 20, and two mounting portions 30. The base portion 10 is the basic component of the attachment 2 and is equipped with a roughly inverted U-shaped rib 11. This rib 11 plays a role in ensuring the rigidity of the attachment 2. The base portion 10 also has through portions 12 in the center of its upper, lower, left, and right sides. These through portions 12 are formed during the molding of the engagement portion 20 and contribute to reducing the amount of resin used in the attachment 2. The engaging portion 20 is a structural part for hooking the housing. This engaging portion 20 comprises an overhanging portion 21 extending forward (away from the wall) from the center of the lower end of the base portion 10, and a hook portion 22 extending upward from the overhanging portion 21. A rib 21a is formed at the lower end of the overhanging portion 21 to increase strength in the left-right direction. The upper end portion 21b of the overhanging portion 21 has a semi-cylindrical shape extending in the front-rear direction, and is shaped to match, for example, the shape of the housing. The hook portion 22 is a part extending upward from above the front end of the overhanging portion 21. The upper end position of the hook portion 22 is set so as not to exceed the upper end position of the through portion 12. This engaging portion 20 supports the housing with the overhanging portion 21 and prevents the housing from coming loose by hooking it with the hook portion 22. The two mounting portions 30 are for securely attaching the attachment 2 to the wall surface and are provided at both ends of the lower end of the base portion 10. The mounting portions 30 are generally constructed with a surface (upper surface portion 31a, described later) that faces slightly upward and towards the center. The fixing pins 3 are driven through this surface, thus forming the fixing portion to the wall surface