Anti-pinch device

Abstract

The utility model discloses a kind of anti-pinch hand devices, including first body and second body, first body is fixed to the inner surface (such as drawer inner surface) of the activity component to be protected via first surface adhesion, second body is limited to keep at first position to be in contact with the body (such as cabinet body) to be protected via contact surface;Second body displacement is removed to the contact of the body to be protected when its second position, allow the activity component to be protected to be displaced to close.

Description

Technical Field

[0001] This utility model belongs to the field of child protection products, specifically relating to an anti-pinch device that can be used to lock moving parts such as drawers and doors to prevent fingers from being pinched. Background Technology

[0002] In daily life at home, opening and closing moving parts such as drawers and cabinet doors can cause fingers to get pinched, especially for children whose minds are not yet fully developed. It is common for children to get their fingers pinched by drawers or cabinet doors while playing. Therefore, it is necessary to provide anti-pinch devices to prevent fingers from getting pinched.

[0003] For example, Chinese utility model patent CN204260217U discloses a drawer anti-pinch device, which consists of a stop block and a fixed block hinged together. This anti-pinch device is installed on the outer surface of the drawer, and the stop block can rotate outwards. Therefore, when the lower drawer is pulled out, the stop block rotates accordingly. When the drawer is pulled out a predetermined distance, the stop block resets, thus preventing the drawer from closing and preventing pinching. However, closing the lower drawer requires manual operation of the stop block. This anti-pinch device is unsightly as it is installed on the outer surface of the drawer and is susceptible to damage. Furthermore, the need for manual operation to close the drawer each time is inconvenient. Utility Model Content

[0004] The purpose of this utility model is to solve at least one of the above-mentioned deficiencies and provide an anti-pinch device that can be installed on the inner surface of a drawer or door and is not exposed to the outside.

[0005] To achieve the above objectives, the present invention adopts the following solution:

[0006] An anti-pinch device includes a first body and a second body, the second body being movably connected to the first body to switch between at least a first position and a second position, i.e., at least two positions. When the second body is in the first position, it is in a position away from the first body, and in the second position, it is in a position close to the first body. A first reset member is provided between the second body and the first body, giving the second body a tendency to displace towards the first position. When the second body is in the first position, it is limited and held to prevent pinching via contact with an abutment surface; when the second body displaces to the second position, the anti-pinch device does not obstruct the closing of the protected component.

[0007] According to the above-mentioned anti-pinch device, the second body is rotatably connected to the first body around the first pivot. The second body switches between a first position and a second position by pivoting and forms a first position (i.e., nearly parallel) when the second body pivots to be substantially parallel to the first surface of the first body. The second body pivots from the first position toward the first body by a first predetermined angle to form a second position, thereby allowing the part to be protected to be closed.

[0008] According to the aforementioned anti-pinch device, the second main body is held in place after pivoting from the first position to the second position, eliminating the need for constant user maintenance and improving the user experience. An actuating element is provided on either the first or second main body to release the locking of the second main body in the second position upon closing. Specifically, when the second main body is in the second position and the anti-pinch device moves to close along with the protected component, the actuating element contacts and is activated, unlocking the second main body from the second position. This allows the second main body to rotate a second predetermined angle towards the first position. When reopened, the second main body pivots back to the first position under the action of the first reset element, thereby simplifying operation and improving the user experience.

[0009] According to the aforementioned anti-pinch device, the first main body is composed of a first locking member, and the second main body is composed of a second locking member. The first locking member includes a first chamber, and a connecting member is axially movably disposed within the first chamber and non-rotatably assembled within the first chamber. The second locking member includes a connecting arm and a stop arm, and a first locking structure and a second locking structure are respectively provided on the connecting member and the connecting arm. The connecting member moves axially to allow the first locking structure to contact or separate from the second locking structure. Preferably, the first locking structure and the second locking structure have a concave-convex fit or frictional contact, so that they can be engaged or separated by the axial movement of the connecting member.

[0010] According to the above-mentioned anti-pinch device, the actuating member is movably disposed in a direction perpendicular to the first pivot, and at least one of the actuating member and the connecting member is provided with a guide surface, so as to drive the connecting member to move axially, i.e., move in the direction of the first pivot, via the displacement of the actuating member in a direction perpendicular to the first pivot.

[0011] According to the aforementioned anti-pinch device, the actuating element is composed of a first actuating element. A first mounting hole is provided on the top wall of the first chamber, and a second mounting hole is provided on the connecting element. The connecting element has a first shaft hole, the first actuating element has a second shaft hole, and the connecting arm has a third shaft hole. A pin passes through the first shaft hole, the second shaft hole, and the third shaft hole. The vertical dimensions of the second shaft hole and the second mounting hole both have allowances. These allowances ensure that they do not affect the rotational connection of the pin. That is, the connecting element and the actuating element can form a rotational connection while also being able to move back and forth in the designed direction, avoiding structural interference. Preferably, the second resetting element is disposed between the connecting element and the bottom wall of the first chamber.

[0012] According to the above-mentioned anti-pinch device, the second body can also rotate around the first pivot to a third position, and in the third position, the first retaining member and the second retaining member respectively disposed on the first body and the second body are engaged, keeping the second body in a normally closed state, or the anti-pinch device is in a normally closed state where it is not working.

[0013] According to the above-mentioned anti-pinch device, the first main body is composed of a third locking member, and the second main body is composed of a fourth locking member; wherein, the fourth locking member is pivotally connected to the third locking member at its rear end, the triggering member is pivotally disposed on the fourth locking member, and the third locking member and the triggering member are respectively provided with a first locking structure and a second locking structure for limiting the fourth locking member to a second position.

[0014] According to the aforementioned anti-pinch device, the actuating element is composed of a second actuating element, which is pivotally connected at its front end. A first locking structure is located at the front end of the third locking element, and a second locking structure is located at the rear end of the second actuating element. Preferably, the third locking element includes a base plate, side plates, and a second connecting cavity between the two side plates, with the first locking structure disposed within the second connecting cavity. The fourth locking element is mounted at its inner end to a first shaft hole in the base plate via a first shaft post, and the second actuating element is mounted at a third mounting hole in the fourth locking element, with the second shaft post of the second actuating element mounted within the second shaft hole of the fourth locking element.

[0015] According to the above-mentioned anti-pinch device, the third locking member is further provided with a third locking structure for connecting and engaging with the second locking structure, so as to keep the fourth locking member in the third position, even if the device is kept in a normally closed state.

[0016] According to the aforementioned anti-pinch device, the anti-pinch device further includes a mounting base, which includes a positioning structure for positioning and a locking cavity for engaging the anti-pinch device. Preferably, 3M adhesive is pre-applied to the first surface to facilitate fixed installation.

[0017] According to the aforementioned anti-pinch device, the first main body is composed of a fifth locking member, the second main body is composed of a locking tongue member, and the actuating member is composed of a third actuating member. Preferably, the locking tongue member is vertically movably configured to form a first position at a high point and a second position at a low point; the third actuating member is vertically movably configured and connected to the locking tongue member via a guide member; the locking tongue member is vertically movably configured, and the guide member is horizontally movably configured to lock the locking tongue member or unlock it via the third actuating member.

[0018] According to the above-mentioned anti-pinch device, the third actuating member and the guide member are respectively provided with a first contact member and a second contact member, and the first contact member and the second contact member are respectively provided with a limiting plane; the third actuating member and the guide member are respectively provided with a first guide member and a second guide member, and at least one of the first guide member and the second guide member has a guide surface.

[0019] According to the above-described anti-pinch device, at least one of the first contact member and the second contact member has a guide surface; the top of the locking tongue member is provided with a tongue block, one side of the tongue block is formed as a limiting plane and the other side is formed as a guide surface; the top of the third actuating member is provided with a guide block, both sides of the guide block are formed as guide surfaces. The guide surface is an inclined surface or a curved surface.

[0020] The anti-pinch device of this utility model is fixedly installed by the first main body, and then the second main body moves relative to the first main body to switch between the first position and the second position. It has the advantages of convenient operation and beautiful appearance.

[0021] In at least one preferred embodiment, linkage control is also achieved through a trigger. After the user adjusts the drawer once and closes it to wait for the protective component to be installed, the device will automatically return to the first position when the drawer is opened again, thus achieving the purpose of preventing hand pinching.

[0022] In another preferred embodiment, the anti-pinch device is configured to be built-in. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the anti-pinch device according to Embodiment 1 of this utility model. At this time, the second main body is in the first position and is limited and held so that it cannot continue to unfold and rotate.

[0024] Figure 2 yes Figure 1 The embodiment is a structural diagram when it rotates from the first position to the second position. At this time, it is feasible for the second body to be limited and held, or to be in a free state and require the user to manually apply force to hold it.

[0025] Figure 3 yes Figure 1 An exploded view of the embodiment, showing an assembly line;

[0026] Figure 4 yes Figure 1 A schematic diagram of the cooperation between the first locking element and the triggering element in the embodiment;

[0027] Figure 5 yes Figure 4 A schematic diagram of the cross-sectional structure;

[0028] Figure 6 yes Figure 1 A schematic diagram of the structure of the second locking component in the embodiment;

[0029] Figure 7 yes Figure 6 Enlarged structural diagram at point A;

[0030] Figure 8 , 9 10 and 11 are Figure 1 A schematic diagram illustrating the usage process of the anti-pinch device in the embodiment;

[0031] Figure 12 yes Figure 1 A schematic diagram illustrating the interaction between the anti-pinch device and the mounting base in the embodiment;

[0032] Figure 13 The schematic diagram of the anti-pinch device in Embodiment 2 of this utility model shows that the second main body is in the second position, and it is either limited and held in place or in a free state that requires the user to manually apply force to hold it in place.

[0033] Figure 14 yes Figure 13 An exploded view of the embodiment, showing an assembly line;

[0034] Figure 15 yes Figure 13 A cross-sectional structural schematic diagram, in which the two return springs are not shown;

[0035] Figure 16 yes Figure 2 A schematic diagram of the use of the anti-pinch device in the embodiment, including four states / positions: a, b, c, and d;

[0036] Figure 17 This is a schematic diagram of the anti-pinch device according to Embodiment 3 of this utility model. At this time, the second main body is in the first position and is limited and held in place, and cannot extend or retract.

[0037] Figure 18 yes Figure 17 A schematic diagram of the structure when the embodiment is transformed to the second position;

[0038] Figure 19 yes Figure 17 Schematic diagram of the structural breakdown of the embodiment;

[0039] Figure 20 yes Figure 17 An exploded view of the structure of the locking tongue, guide, and second actuating element in the embodiment;

[0040] Figure 21 yes Figure 20 The assembly diagram shows the assembly of the components with... Figure 20 A diagram of the opposite side.

[0041] The components include a first pivot 100, a first body 10, a second body 20, a mounting base 30, and a first surface 101.

[0042] Contact surface 201, cabinet body 301, drawer 302, actuating component 130.

[0043] First locking element 11, second locking element 21, first locking structure 122, second locking structure 214.

[0044] Fitting part 111, connecting part 112, first chamber 113, first mounting hole 114, shaft protrusion 115, annular cavity 116, fourth shaft hole 117.

[0045] Connector 121, protrusion 123, first shaft hole 124, second mounting hole 125, second guide surface 126, third mounting hole 127, second reset component 129.

[0046] First actuating element 131, first guide surface 132, second shaft hole 133, contact end 134, lower end of actuating element 135.

[0047] Pin 141, first reset member 142, spline structure 143, first retainer 144, second retainer 145.

[0048] Connecting arm 211, stop arm 212, first connecting cavity 213, groove 215, third shaft hole 216, boss 217.

[0049] Groove group 2a, groove group 2b, limiting plane 1a, guide surface 1b.

[0050] Positioning structure 311, engagement cavity 312,

[0051] Second pivot 200, third locking member 15, fourth locking member 22, base plate 151, side plate 152, second connecting cavity 153, third locking structure 155, first shaft post 221, third mounting hole 222, second shaft hole 223, second actuating member 161, second shaft post 162, contact part 163, spring seat 164.

[0052] Fifth locking component 18, sixth locking component 23, housing 181, housing cover 182, first housing hole 183, second housing hole 184.

[0053] Locking tongue 231, guide 232, tongue block 233, first contact 234, second contact 235, second guide 236.

[0054] Third actuator 171, guide block 172, first guide 173. Detailed Implementation

[0055] To enable those skilled in the art to better understand this utility model and to more clearly define the scope of protection claimed by this utility model, the present utility model will be described in detail below with reference to certain specific embodiments.

[0056] Example 1

[0057] An anti-pinch device is provided for installation on the inside of moving furniture parts such as drawers and doors to prevent fingers from being pinched when the drawer or door closes. The device has two states: an active state and a deactivated state. In the active state, it prevents the drawer or door from closing and avoids finger pinching. In the deactivated state, it remains in a state / position that does not prevent the drawer or door from closing.

[0058] For reference, this embodiment uses the example of an anti-pinch device built into a drawer unit to manage the opening and closing of drawers, thus illustrating the structure and principle of the device. As known in the prior art, a drawer unit typically consists of a cabinet body and drawers that can be pulled out. Whether the device prevents the drawer from closing depends on whether any part of it can interfere with the closing process. When interference occurs, a portion of the anti-pinch device abuts against the cabinet body to prevent the drawer from closing; conversely, when no part of the anti-pinch device interferes with the cabinet body, it does not prevent the drawer from closing. Of course, it can also be installed on the outer surface of the drawer for use, i.e., external installation; its working principle is similar and will not be elaborated further.

[0059] like Figure 1-12 As shown, the anti-pinch device includes a first body 10 and a second body 20, which are rotatably connected. The first body 10 is fixed to the inner surface of a drawer (or door, where "drawer" can be replaced with "door" in the following explanation). The fixing method can be known methods such as adhesive or screw fixing, and is not limited. The rotation of the second body 20 relative to the first body 10 enables the entire device to rotate and switch at different positions, so as to achieve the effect of preventing or allowing the drawer to close.

[0060] like Figure 1 , 8 The diagram shown illustrates the anti-pinch device preventing the drawer from closing; Figure 2 , 9 The diagram shows the anti-pinch device not obstructing the drawer from closing. Figure 12 The diagram shown also illustrates the device when it does not obstruct the drawer from closing; the difference is that the device is normally closed in this state. Figure 2 , 9 In the indicated state, the device allows the drawer to close this time, and the device can rotate to the desired position again after the drawer is opened next time. Figure 8 The blocking is in the closed state as shown. Figure 12 The device is shown in a normally closed state, allowing the drawer to be opened and closed once or multiple times. For example, Figure 1 , 8 The diagram shown illustrates the second main body 20 in the first position. Figure 2 , 9 The diagram shown is of the second position, as follows: Figure 12 The diagram shown is of the third position.

[0061] like Figure 1 , 2 As shown, the first body 10 and the second body 20 are hinged near their respective ends, so that the overall structure of the device composed of the two is compact and small in size, and easy to fold or unfold. Among them, a first surface 101 is formed on the back of the first body 10 for attaching to the inner surface of the drawer for fixation.

[0062] Preferably, 3M adhesive can be pre-applied to the first surface 101 to facilitate adhesive bonding of the first body 10. In other embodiments, the first surface 101 is attached to the inner surface of the drawer and secured with screws.

[0063] like Figure 8 As shown, the second body 20 is limited and held in the first position and cannot continue to rotate and open. It abuts against the body to be protected (i.e., cabinet body 301) through the contact surface 201, thereby achieving the purpose of preventing the drawer from closing.

[0064] like Figure 2 As shown, when the second body 20 is composed of Figure 1 The position shown rotates downwards around the first pivot 100, allowing the second body 20 to rotate from the first position to the second position. This enables the anti-pinch device to be switched to a second state that does not obstruct the closing of the drawer 302. During this process, the first body 10 rotates by an angle b, such as... Figure 9 As shown. In this embodiment, b is 95°. In other embodiments, the value of b can be set as needed and is not limited.

[0065] Preferably, in this embodiment, the anti-pinch device can be held in the second position, so the user only needs to rotate it at the aforementioned angle b, without having to apply continuous force to maintain it in that position. This simplifies operation and improves the user experience. Of course, in other embodiments, the structure for holding the second body 20 in the second position can be omitted, and the user can manually hold the position of the second body 20 so that it does not interfere with the closing of the drawer.

[0066] like Figure 3-7 As shown, the first body 10 is composed of a first locking member 11, which includes a fitting portion 111 and a connecting portion 112. The top surface of the connecting portion 112 forms the upper end surface of the first body 10. Simultaneously, the second body 20 is composed of a second locking member 21, which includes a connecting arm 211 and a stop arm 212. The connecting arm 211 and the stop arm 212 are preferably integrally formed. There are two connecting arms 211, which extend and protrude from the lower end of the stop arm 212. A first connecting cavity 213 is formed between the two connecting arms 211. During assembly, the two connecting arms 211 are located at both ends of the connecting portion 112, and the first connecting cavity 213 accommodates the connecting portion 112 wholly or partially within it.

[0067] Preferably, a first chamber 113 with a non-circular cross-section can be provided within the connecting portion 112. For example, the first chamber 113 has a semi-racetrack-shaped cross-section. The connector 121 is at least partially accommodated within the first chamber 113, and both have compatible shapes, thereby ensuring that the connector 121 is non-rotatably disposed within the first chamber 113. In other embodiments, other shapes can also be used to achieve the non-rotatable arrangement, such as non-circular cross-sections like triangles or squares, or anti-rotation structures with concave and convex shapes even though they have a circular cross-section. In short, any design that allows the connector 121 to be non-rotatably installed within the first chamber 113 is acceptable.

[0068] Furthermore, the connector 121 is movably arranged along the axial direction, that is, the connector 121 can move back and forth along the direction of the first pivot 100. A first locking structure 122 is provided at the outer end of the connector 121, and a second locking structure 214 is provided on the corresponding connecting arm 211. Thus, the first locking structure 122 and the second locking structure 214 can be engaged or disengaged by the axial displacement of the connector 121. When the two are engaged, the rotation of the second locking member 21 is locked, and when the two are disengaged, the rotation of the second locking member 21 is allowed.

[0069] In this embodiment, the first locking structure 122 and the second locking structure 214 are respectively a protrusion and a recess, forming a convex-concave fit between them. In other embodiments, the first locking structure 122 and the second locking structure 214 may also be friction-locked.

[0070] like Figure 4 , 7 As shown, the first locking structure 122 is composed of a protrusion 123 protruding from the end face of the connector 121, and the second locking structure 214 is a corresponding recess 215 recessed on the connecting arm 211. Preferably, there are two protrusions 123 located on both sides of the first pivot 100, and the connecting arm 211 is provided with two corresponding recess groups, each recess group having two recesses 215, wherein: the first recess group 2a is used to lock the second locking member 21 (i.e., ...) at the first position. Figure 7 As shown), the second groove group 2b is used to lock the second lock member 21 in the second position. Figure 7 (as shown in the diagram), thereby enabling the second locking member 21 to be held in the first position or the second position.

[0071] In this embodiment, the groove 215 corresponding to the first position forms a limiting plane 1a on one side and a guide surface 1b on the other side. The guide surface can be an inclined surface or a curved surface, thereby enabling the second locking member 21 to be locked when opened, but not locked when closed. That is, the rotation of the second locking member 21 from the first position to the second position is free and not locked (based on the guiding effect of the guide surface). The groove 215 corresponding to the second position forms limiting planes 1a on both sides, so that the rotation of the second locking member 21 in the second position is completely locked and must be unlocked before it can be rotated again.

[0072] Therefore, if we consider removing the locking function of the second locking member 21 at the second position, we can simply omit the second groove group 2b. Since the connecting member 121 is axially movable and can retract, the protrusion 123 will not interfere with the connecting arm 211.

[0073] Of course, in other embodiments, the first groove group 2a may be omitted, and other structures may be used to achieve the purpose of limiting the rotation of the second locking member 21. For example, the first locking member 11 may be protruded upward by a certain distance so as to abut and limit the rotation at the back of the second locking member 21, or as follows: Figure 8 The second locking element 21 is stopped by the drawer.

[0074] In this embodiment, the pin 141 passes through the connector 121 and through the third shaft hole 216 of the two connecting arms 211 of the second locking member 21, thereby pivotally connecting the second locking member 21 to the first locking member 11.

[0075] Preferably, the pin 141 is non-rotatably connected to the two third shaft holes 216, for example, by providing an anti-rotation structure such as a spline structure 143. The pin 141 is rotatably inserted into the first shaft hole 124 of the connector 121. The first reset member 142 is disposed between the first locking member 11 and the second locking member 21, so that the second locking member 21 initially maintains a tendency to rotate toward the first position. For example, a torsion spring is used as the first reset member 142. A boss 217 is formed around the third shaft hole 216. The boss 217 is circular and protrudes to facilitate positioning the anti-pinch device in the mounting base 30.

[0076] like Figure 3 , 5 As shown, a second reset member 129 is provided between the connector 121 and the bottom wall of the first chamber 113. The second reset member 129 is preferably a reset spring so that the connector 121 initially has an extension tendency.

[0077] Since unlocking requires driving the connector 121 to move axially, this embodiment also provides a first actuating element 131 as an actuating element 130. By driving the first actuating element 131 to move, the connector 121 is driven to retract inward in the axial direction, so that the first locking structure 122 is disengaged from the second locking structure 214 and unlocked.

[0078] Preferably, the first actuating member 131 is movably arranged in a direction perpendicular to the first pivot 100, more specifically, in a vertical direction. The first actuating member 131 and the connecting member 121 are respectively provided with a first guide surface 132 and a second guide surface 126. At least one of the two guide surfaces is an inclined surface or a curved surface, so as to convert the displacement movement of the first actuating member 131 perpendicular to the axial direction into the displacement movement of the connecting member 121 along the axial direction. In this way, the action of closing the drawer can drive the first actuating member 131 to move, so as to unlock the second locking member 21 from the second position at the same time as closing the drawer. When the drawer is opened again next time, the anti-pinch device can automatically return to the working state under the action of the first reset member 142, that is, the second locking member 21 automatically rotates to the first position, which is convenient to use.

[0079] In this embodiment, the connector 121 is provided with a second mounting hole 125 extending perpendicularly to the axial direction, so that the first actuating member 131 can be at least partially accommodated therein. Since the pin 141 passes through the connector 121, the width of the second mounting hole 125 along the axial direction and the height of the second shaft hole 133 provided on the first actuating member 131 both have a margin to meet the displacement requirements.

[0080] A first mounting hole 114 is provided on the upper end surface of the connecting portion 112. The first actuating member 131 passes through the first mounting hole 114 and the second mounting hole 125 in sequence, so that the abutting end 134 formed on the connecting portion 112 can be exposed to abut against the upper wall surface of the cabinet body 301. Preferably, the first actuating member 131 also passes through a third mounting hole 127 provided on the lower end surface of the connecting portion 112, so that the lower end 135 of the actuating member 131 can move downward, for example, the lower end 135 of the actuating member extends out of the third mounting hole 127.

[0081] Preferably, the anti-pinch device in this embodiment is installed and positioned using a mounting base 30. The mounting base 30 is provided with a positioning structure 311 and a locking cavity 312. The positioning structure 311 is used for positioning and assembling with the main body of the product to be protected. The size of the locking cavity 312 is slightly smaller than the anti-pinch device and preferably matches the shape of the boss 217, thereby allowing the anti-pinch device to be interference-fitted into the locking cavity 312. Finally, the anti-pinch device is accurately positioned and installed on the inner surface of the drawer, making installation convenient.

[0082] In this embodiment, the second locking member 21 rotates downward by an angle b from the first position to form the second position. As the drawer closes, the contact end 134 of the first actuating member 131 is activated, releasing the locking relationship between the first locking structure 122 and the second locking structure 214. Under the elastic force of the first reset member 142, the second locking member 21 is driven to rotate towards the first position by an angle a. After rotating by angle a, the first locking structure 122 and the second locking structure 214 can no longer form a rotational lock. Therefore, when the drawer is opened again, the second locking member 21 can further rotate to the first position under the elastic force of the first reset member 142. Thus, with this design, automatic unlocking can be achieved using the drawer closing process. That is, when the drawer closes, the first actuating member 131 is driven downward by the upper wall surface of the cabinet body, releasing the locking connection between the two locking structures. This allows the second locking member 21 to rotate towards the first position under the action of the first reset member 142 until it contacts the lower surface of the upper wall surface of the cabinet body. In this way, when the drawer is opened again, the second locking member 21 can continue to rotate to the first position, achieving automatic reset and making it convenient to use. The value of angle α can be set as needed and is not limited. For example, in one embodiment, angle α is 5°.

[0083] like Figure 5-6As shown, a first retaining member 144 is provided on the first locking member 11, and a corresponding second retaining member 145 is provided on the second locking member 21. When the second locking member 21 continues to rotate downward from the second position until it is close to fitting with the first locking member 11 to form a third position, the first retaining member 144 and the second retaining member 145 are connected, holding the second locking member 21 in the third position. The user can only unlock it from the third position by separating the two. The first actuating member 131 cannot unlock the second locking member 21. Preferably, the first retaining member 144 and the second retaining member 145 are interlocked or interference-fitted to achieve locking and holding of the second locking member 21.

[0084] In addition, in this embodiment, a shaft protrusion 115 and an annular cavity 116 surrounding the shaft protrusion 115 are provided on the other end of the connecting part 112 opposite to the first chamber 113. A fourth shaft hole 117 is provided in the shaft protrusion 115. The fourth shaft hole 117 is concentrically arranged with the first shaft hole 124 so that the pin 141 can pass through, so that the second locking member 21 rotates stably.

[0085] The anti-pinch device in this embodiment has several typical usage states as follows:

[0086] I. For example Figure 8 The diagram shows a side view of the device mounted on a drawer in operation (the same applies when mounted on the inner surface of a door). The first surface 101 is attached to the inner surface of the drawer, and the vertical installation height of the anti-pinch device meets the usage requirements (the specific installation height can be determined based on the mounting base 30). At this time, the second lock 21 (i.e., the second main body 20) is in the first position, preventing the drawer from closing to avoid pinching fingers. Unless operated by the user, the anti-pinch device will remain in this state.

[0087] 2. If the drawer needs to be closed, the user pulls the drawer outward a certain distance, and then pushes the second locking member 21 downward to rotate. Since the first groove group 2a has a one-way locking structure, it can be pushed without operating the first trigger 131 to unlock. The second locking member 21 rotates to the second position by angle b, and the protrusion 123 engages with the second groove group 2b to lock the second locking member 21 in the second position, forming a lock as shown in the image. Figure 9 The state is shown. When the drawer is pushed inward to near closing, the first actuating element 131 is displaced downward, the first locking structure 122 and the second locking structure 214 are unlocked, and under the action of the first reset element 142, the second locking element 21 rotates towards the first position by a predetermined angle α until the second locking element 21 contacts the upper wall of the cabinet body. The next time the drawer is pulled open, the second locking element 21 can continue to rotate to the first position under the elastic force of the first reset element 142, and the anti-pinch device returns to the state shown. Figure 8 The working status shown is convenient to use.

[0088] 3. To set the anti-pinch device to a normally closed state, meaning it will not function regardless of how the drawer is opened or closed, the user should rotate the second lock 21 to the third position. Figure 12 As shown, at this time, the second locking member 21 is engaged and locked by the first retaining member 144 and the second retaining member 145, and the drawer can be opened and closed at will.

[0089] Example 2

[0090] An anti-pinch device, the overall function and working principle of which can be understood with reference to Embodiment 1, but the implementation structure is different.

[0091] In this embodiment, the anti-pinch device is also used for built-in installation and to achieve an automatic reset function (i.e., it is unlocked when the drawer is closed and automatically returns to the anti-pinch working state when the drawer is opened again). Of course, it can also be installed on the outer surface of the drawer for use, i.e., external installation.

[0092] like Figure 13-16 As shown, the anti-pinch device also includes a first body 10 and a second body 20, which are rotatably connected. The first body 10 is used to fix to the inner surface of the drawer (or door), and the rotation of the second body 20 relative to the first body 10 enables the overall device to rotate and switch at different positions.

[0093] refer to Figure 16 As shown in Figures a and a, each figure is a side view of the second main body 20 when it is in the first position, where Figure a corresponds to Embodiment 1. Figure 8 The state shown in Figure b corresponds to... Figure 9 , 10 The state shown in diagram c corresponds to Figure 11 As shown, the drawers and cabinet body are not shown.

[0094] like Figure 14 As shown, in this embodiment, the first main body 10 is composed of a third locking member 15, which includes a base plate 151 and two side plates 152. The two side plates 152 extend on the same side of the base plate 151, and a second connecting cavity 153 is formed between the two side plates 152. A first locking structure 122 is provided in the second connecting cavity 153. Meanwhile, the second main body 20 is composed of a fourth locking member 22, which is elongated in shape. The fourth locking member 22 has a first shaft post 221 at its inner end and a third mounting hole 222 at its outer end. A second shaft hole 223 is provided at the third mounting hole 222 to allow the second shaft post 162 to be rotatably installed therein. The two side plates 152 are correspondingly provided with first shaft holes 124 to allow the first shaft post 221 to be installed therein, so that the fourth locking member 22 is rotatably connected around the first pivot 100.

[0095] The actuating element 130 is composed of a second actuating element 161. The outer end of the second actuating element 161 has a second post 162, and the upper end of the second actuating element 161 has a contact portion 163. A second locking structure 214 is provided below the second post 162. Preferably, in this embodiment, the second post 162 and the second locking structure 214 are respectively located at both ends of the second actuating element 161. (See reference...) Figure 16 As shown in Figure ac, the contact portion 163 protrudes from the upper surface of the fourth locking member 22 at both the first and second positions. When rotated by an angle α from the second position toward the first position, it becomes basically flush with the upper surface of the fourth locking member 22.

[0096] like Figure 15 As shown, the first locking structure 122 is located above the bottom surface of the second connecting cavity 153, and the second locking structure 214 extends from the bottom surface of the second actuating member 161. A spring seat 164 is also provided on the fourth locking member 22, and a return spring (not shown) is installed between the second actuating member 161 and the fourth locking member 22, so that the contact portion 163 of the second actuating member 161 initially protrudes from the upper surface of the fourth locking member 22.

[0097] Furthermore, to keep the fourth locking member 22 in a normally closed state, a third locking structure 155 can be provided on the bottom wall of the second connecting cavity 153. This allows the first locking structure 122 to be rotated to a larger angle and then engaged with it, thus holding the fourth locking member 22 in that position, i.e., the third position, forming a normally open state. (Refer to...) Figure 16 As shown in Figure d.

[0098] The usage process of the anti-pinch device in this embodiment can be understood by referring to Embodiment 1.

[0099] Example 3

[0100] An anti-pinch device is provided. The overall function and working principle can be understood with reference to Embodiments 1 and 2, but the structure is modified. The anti-pinch device in this embodiment is preferably used for built-in installation and can also realize the automatic reset function (i.e., it is unlocked when the drawer is closed and automatically restored to the anti-pinch working state when the drawer is opened again); of course, it can also be installed on the outer surface of the drawer for use, i.e., external installation.

[0101] like Figure 17-21 As shown, the anti-pinch device includes a first body 10 and a second body 20, which are connected in a telescopic manner, which is different from the rotation method in Embodiments 1 and 2.

[0102] In this embodiment, the first body 10 can be fixed to the inner surface of a drawer (or door), and the overall device can be switched between different positions by the telescopic movement of the second body 20 relative to the first body 10. (Refer to...) Figure 17The diagram shown is a schematic diagram of the second main body 20 in the first position. Figure 18 The diagram shows the second body 20 in the second position. In the first position, the drawer is prevented from closing to avoid pinching fingers, and in the second position, the drawer is allowed to close.

[0103] like Figure 18 As shown, the first main body 10 is composed of a fifth locking member 18, which encloses a housing 181 and a cover 182; the second main body 20 is composed of a sixth locking member 23, which is disposed inside the fifth locking member 18. A first housing hole 183 and a second housing hole 184 are provided on the top wall of the housing 181 for the tongue block 233 of the locking tongue member 231 and the guide block 172 of the third actuating member 171 to extend and retract within them.

[0104] The sixth locking component 23 includes a locking tongue 231 and a guide 232 for locking the locking tongue 231 in a second position. The locking tongue 231 is vertically reciprocating, and the guide 232 is horizontally reciprocating. The locking tongue 231 and the guide 232 are respectively provided with a first contact 234 and a second contact 235. A limiting plane 1a is provided above the first contact 234, and a guide surface 1b is provided below it. The second contact 235 has a limiting plane 1a below it and a guide surface 1b above it. Surface 1b uses the limiting plane 1a of the first contact member 234 and the limiting plane 1a of the second contact member 235 as the first locking structure 122 and the second locking structure 214, respectively. The guide member 232 is driven to move horizontally left and right by the vertical displacement of the latch member 231. When the latch member 231 moves downward, the limiting plane 1a of the first contact member 234 and the limiting plane 1a of the second contact member 235 abut against each other to lock the upward displacement of the latch member 231, thus keeping the latch member 231 in the second position. (Refer to...) Figure 20 As shown. Among them, a tongue block 233 is provided at the upper end of the locking tongue 231, and a limiting plane 1a is provided on one side of the tongue block 233 and a guide surface 1b is provided on the other side.

[0105] like Figure 21 As shown, the actuating member 130 is composed of a third actuating member 171, which is movable in the vertical direction to drive the guide member 232 away from the locking tongue member 231 to unlock the first contact member 234 and the second contact member 235. The third actuating member 171 and the guide member 232 are respectively provided with a first guide member 173 and a second guide member 236. The first guide member 173 and the second guide member 236 are preferably provided with corresponding guide surfaces so that the guide member 232 is driven to move horizontally by the vertical displacement of the third actuating member 171.

[0106] Preferably, the top of the third actuating member 171 is provided with a guide block 172, which is used to release the lock between the first contact member 234 and the second contact member 235 when the drawer is closed by being touched by the upper wall of the cabinet body. Preferably, both the front and rear sides of the guide block 172 are guide surfaces.

[0107] The anti-pinch device in this embodiment is used as follows:

[0108] First, the first surface 101 can be attached and fixed to the inner surface of the drawer to form a built-in installation.

[0109] Secondly, the tongue block 233 of the locking tongue 231 extends out of the first housing hole 183 to prevent the drawer from closing. When the drawer needs to be closed, the user presses the tongue block 233 to retract it until the first contact member 234 and the second contact member 235 form a limit so that the locking tongue 231 changes to the second position and then closes the drawer.

[0110] Finally, when the drawer is closed, the guide block 172 is driven downward by the upper wall surface of the cabinet body. Through the guiding action of the first guide 173 and the second guide 236, the guide 232 is driven to move horizontally, causing the first contact 234 to separate and unlock from the second contact 235. The latch 231, under the action of the return spring (not shown in the figure) acting as the first retainer 142, can move upward a certain distance until it abuts against the upper wall of the cabinet body, thus unlocking the latch 231. When the drawer is opened again, the latch 231 moves upward to the first position under the action of the spring force, preventing the drawer from closing. This is convenient to use. Therefore, its performance is similar to that of Embodiment 1.

Claims

1. An anti-pinch device, comprising a first body (10) and a second body (20), wherein the second body (20) is movably connected to the first body (10) to switch between at least a first position and a second position; characterized in that, When the second body (20) is in the first position, it is in a position far away from the first body (10), and when it is in the second position, it is in a position close to the first body (10). A first reset member (142) is provided between the second body (20) and the first body (10), so that the second body (20) has a tendency to move towards the first position; when the second body (20) is in the first position, it is limited and held to prevent pinching by the contact surface (201); when the second body (20) moves to the second position, the anti-pinch device does not block the closing of the component to be protected.

2. The anti-pinch device according to claim 1, characterized in that, The second body (20) is rotatably connected to the first body (10) about the first pivot (100). The second body (20) can switch between a first position and a second position by pivoting. When the second body (20) pivots to be parallel to the first surface (101) of the first body (10), it forms the first position. The second body (20) pivots from the first position toward the first body (10) by a first predetermined angle to form the second position.

3. The anti-pinch device according to claim 2, characterized in that, The second body (20) is pivoted from the first position to the second position and then held in place. The first body (10) or the second body (20) is provided with a trigger (130). When the second body (20) is in the second position and the anti-pinch device moves to close along with the component to be protected, the trigger (130) contacts the body to be protected and is triggered, unlocking the second body (20) from the second position, causing the second body (20) to rotate towards the first position by a second predetermined angle. When it is opened again, the second body (20) pivots to the first position under the action of the first reset member (142).

4. The anti-pinch device according to claim 2 or 3, characterized in that, The first body (10) is composed of a first locking member (11), and the second body (20) is composed of a second locking member (21); the first locking member (11) includes a first chamber (113), and the connecting member (121) is axially movably disposed in the first chamber (113) and is non-rotatably assembled in the first chamber (113); The second locking member (21) includes a connecting arm (211) and a stop arm (212). A first locking structure (122) and a second locking structure (214) are respectively provided on the connecting member (121) and the connecting arm (211). The connecting member (121) moves axially to make the first locking structure (122) contact or separate from the second locking structure (214). The first locking structure (122) and the second locking structure (214) are in a concave-convex fit or frictional contact.

5. The anti-pinch device according to claim 4, characterized in that, The actuating element (130) is movably disposed in a direction perpendicular to the first pivot (100), and at least one of the actuating element (130) and the connecting element (121) is provided with a guide surface for driving the connecting element (121) to move axially via the displacement of the actuating element (130) in a direction perpendicular to the first pivot (100).

6. The anti-pinch device according to claim 5, characterized in that, The actuating element (130) is composed of a first actuating element (131). A first mounting hole (114) is provided on the top wall of the first chamber (113), and a second mounting hole (125) is provided on the connecting element (121). A first shaft hole (124) is provided on the connecting element (121), a second shaft hole (133) is provided on the first actuating element (131), and a third shaft hole (216) is provided on the connecting arm (211). A pin (141) passes through the first shaft hole (124), the second shaft hole (133), and the third shaft hole (216), and the vertical dimension of the second shaft hole (133) and the vertical dimension of the second mounting hole (125) both have a margin. A second resetting element (129) is disposed between the connecting element (121) and the bottom wall of the first chamber (113); or, The second body (20) can also rotate around the first pivot (100) to a third position, and in the third position, the first retainer (144) and the second retainer (145) respectively disposed on the first body (10) and the second body (20) engage to keep the second body (20) in a normally closed state.

7. The anti-pinch device according to claim 2 or 3, characterized in that, The first main body (10) is composed of a third locking member (15), and the second main body (20) is composed of a fourth locking member (22); The fourth locking member (22) is pivotally connected to the third locking member (15) at its rear end, and the actuating member (130) is pivotally disposed on the fourth locking member (22). The third locking member (15) and the actuating member (130) are respectively provided with a first locking structure (122) and a second locking structure (214) for limiting the fourth locking member (22) to a second position.

8. The anti-pinch device according to claim 7, characterized in that, The trigger (130) is composed of a second trigger (161), which is pivotally connected at its front end. A first locking structure (122) is located at the front end of the third locking member (15), and a second locking structure (214) is located at the rear end of the second trigger (161). The third locking member (15) includes a base plate (151), a side plate (152), and a second connecting cavity (153) disposed between the two side plates (152). A first locking structure (122) is provided in the second connecting cavity (153). The fourth locking member (22) is installed at its inner end in the first shaft hole (124) of the base plate (151) via a first shaft post (221). The second actuating member (161) is installed at the third mounting hole (222) of the fourth locking member (22), and the second shaft post (162) of the second actuating member (161) is installed in the second shaft hole 223 of the fourth locking member (22). Alternatively, the third locking member (15) may also be provided with a third locking structure (155) for engaging with the second locking structure (214) to hold the fourth locking member (22) in the third position.

9. The anti-pinch device according to claim 6 or 8, characterized in that, The anti-pinch device also includes a mounting base (30), which includes a positioning structure (311) and a locking cavity (312).

10. The anti-pinch device according to claim 1, characterized in that, The first body (10) is composed of a fifth locking member (18), the second body (20) is composed of a locking tongue member (231), and the trigger member (130) is composed of a third trigger member (171); The locking tongue (231) is vertically movable to form a first position at a high point and a second position at a low point; the third actuating member (171) is vertically movable and connected to the locking tongue (231) via the guide member (232), the locking tongue (231) is vertically movable, and the guide member (232) is horizontally movable to lock the locking tongue (231) or to unlock it via the third actuating member (171).

11. The anti-pinch device according to claim 10, characterized in that, The locking tongue (231) and the guide (232) are respectively provided with a first contact (234) and a second contact (235), and the first contact (234) and the second contact (235) are respectively provided with a limiting plane; The third actuating member (171) and the guide member (232) are respectively provided with a first guide member (173) and a second guide member (236), and at least one of the first guide member (173) and the second guide member (236) has a guide surface.

12. The anti-pinch device according to claim 11, characterized in that, At least one of the first contact (234) and the second contact (235) has a guide surface; The top of the locking tongue (231) is provided with a tongue block (233), one side of the tongue block (233) is formed as a limiting plane and the other side is formed as a guide surface; the top of the third actuating member (171) is provided with a guide block (172), both sides of the guide block (172) are formed as guide surfaces. The guide surface is either an inclined surface or a curved surface.

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