Catch Rock

Abstract

To provide a catch lock capable of maintaining an unlocked state.SOLUTION: A catch lock includes: a locking member 16 which is provided displaceably with respect to a keeper 3 between a locked state and an unlocked state; a locking cam member 18 which is provided with respect to the locking member 16 between an engaged state and a non-engaged state, and prevents displacement of the locking member 16 in an unlocking direction in the engaged state, thereby maintaining the locking member 16 in the locked state; and an unlocking retaining member 17 which is provided displaceably with respect to the locking cam member 18 between an engaged state and a non-engaged state, and prevents displacement of the locking cam member 18 in an engaging direction relative to the locking member 16 in the engaged state, thereby maintaining the locking member 16 in the unlocked state.SELECTED DRAWING: Figure 4

Description

Technical Field

[0001] The present invention relates to a catch lock used, for example, for a door lock or the like.

Background Art

[0002] Conventionally, various types of such catch locks have been proposed.

[0003] For example, Patent Document 1 discloses a snatch lock in which when the door is closed, the locking of the door to the fixed frame is automatically established, the door is unlocked by operating a trigger lever, and the door is automatically elastically driven in the opening direction.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] However, in this snatch lock, when the door is heavy and does not elastically drive during unlocking, that is, when the receiver on the fixed frame side does not separate from the lock plate on the door side, it will be relocked immediately after the finger is released from the trigger lever. Therefore, it is necessary to open the door while operating the trigger lever with a finger.

[0006] Moreover, for a huge door, there is a desire to use two of these snatch locks with a gap between them. However, it is not easy to open the door while operating the two trigger levers provided with a gap by one person.

[0007] The present invention has been made based on the above circumstances, and an object thereof is to provide a catch lock that can maintain the unlocked state. [Means for solving the problem]

[0008] To solve the above problems, the catch lock according to the present invention comprises a main body attached to a first member and a receiver attached to a second member that is provided to be able to move toward and away from the first member, the main body having a locking member provided to be displaceable between a locked state and an unlocked state relative to the receiver, a first spring that biases the locking member toward the receiver in the unlocking direction, a locking cam member provided to be displaceable between a locked state and an unlocked state relative to the locking member, which in the locked state prevents the locking member from being displaced toward the unlocking direction against the biasing force of the first spring and holds the locking member in the locked state, and the locking cam member being The device is characterized by comprising: a second spring that biases the locking member in the locking direction; an unlocking holding member that is displaceable between a locked state and an unlocked state relative to the locking cam member, which in the locked state prevents the locking cam member from being displaced in the locking direction relative to the locking member and holds the locking member in an unlocked state, and which is put into an unlocked state relative to the locking cam member when the receiving portion separates from the main body as the first member and the second member separate; and an interlocking means that, when the locking cam member is displaced to an unlocked state relative to the locking member, displaces the unlocking holding member to a locked state relative to the locking cam member in conjunction with it. [Effects of the Invention]

[0009] According to the catch lock of the present invention, the unlocked state can be maintained. [Brief explanation of the drawing]

[0010] The drawings illustrate specific embodiments of the present invention relating to this disclosure, including not only essential components of the invention but also optional and preferred embodiments. [Figure 1] A perspective view showing a catch lock according to the first embodiment of the present invention. [Figure 2] A perspective view showing the catch lock disassembled. [Figure 3] A perspective view showing the catch lock disassembled. [Figure 4] A front view showing the operation state of the catch lock, with some details omitted. [Figure 5] Front view showing a partial omission of the operating state of the same catch lock. [Figure 6] Front view showing a partial omission of the operating state of the same catch lock. [Figure 7] Front view showing a partial omission of the operating state of the same catch lock. [Figure 8] Front view showing a partial omission of the operating state of the same catch lock. [Figure 9] Front view showing a partial omission of the operating state of the same catch lock. [Figure 10] Front view showing a partial omission of the operating state of the same catch lock. [Figure 11] Front view showing a partial omission of the operating state of the same catch lock. [Figure 12] Front view showing a partial omission of the operating state of the same catch lock. [Figure 13] Front view showing a partial omission of the operating state of the same catch lock. [Figure 14] Front view showing a partial omission of the operating state of the same catch lock. [Figure 15] Front view showing a partial omission of the operating state of the same catch lock. [Figure 16] Front view showing a partial omission of the operating state of the same catch lock. [Figure 17] Front view showing a partial omission of the operating state of the same catch lock. [Figure 18] Front view showing a partial omission of the operating state of the same catch lock. [Figure 19] Front view showing a partial omission of the operating state of the same catch lock. [Figure 20] Front view showing a partial omission of the catch lock according to the second embodiment of the present invention. [Figure 21] Front view showing a partial omission of the same catch lock. [Figure 22] Front view showing a partial omission of the catch lock according to the third embodiment of the present invention. [Figure 23] Front view showing a partial omission of the same catch lock.

Best Mode for Carrying Out the Invention

[0011] <First Embodiment> Hereinafter, the first embodiment of the present invention will be described with reference to the drawings.

[0012] In FIG. 1, reference numeral 1 indicates a catch lock according to the first embodiment of the present invention.

[0013] This catch lock 1 includes a main body 2 and a keeper (receiver) 3.

[0014] The main body 2 is attached to a movable part (first member) 4 such as a door, for example, and the keeper 3 is attached to a fixed part (second member) 5 such as a fixed frame, for example, so that the movable part 4 approaches and separates from the fixed part 5. <00001–13> Also, as shown in FIGS. 2 and 3, the main body 2 is attached to the movable part 4 by a movable-side attachment part 6, and the keeper 3 is attached to the fixed part 5 by a fixed-side attachment part 7.

[0016] The main body 2 includes a first case 8 and a second case 9 that are arranged to face each other with a predetermined distance therebetween, and a movable-side attachment part 6 is formed on these first case 8 and second case 9.

[0017] That is, the movable-side attachment part 6 has a first attachment part 11 and a second attachment part 12. The first attachment part 11 is formed by bending a part of the first case 8, and the second attachment part 12 is formed by bending a part of the second case 9.

[0018] A first shaft 13, a second shaft 14, and a third shaft 15 are installed on the first case 8 and the second case 9.

[0019] A lock member 16 and an unlocking holding member 17 are pivotally supported on the first shaft 13 so as to be rotatable, a locking cam member 18 is pivotally supported on the second shaft 14 so as to be rotatable, and an unlocking lever (unlocking means) 19 is pivotally supported on the third shaft 15 so as to be rotatable.

[0020] Furthermore, a first torsion coil spring (first spring) 21 is attached to the first shaft 13 to bias the locking member 16.

[0021] Furthermore, tension coil springs (second spring, third spring) 22 are stretched between the locking cam member 18 and the unlocking lever 19 to bias the locking cam member 18 and the unlocking lever 19.

[0022] In other words, the locking member 16, the unlocking holding member 17, the locking cam member 18, the unlocking lever 19, the first torsion coil spring 21, and the tension coil spring 22 are positioned between the first case 8 and the second case 9.

[0023] Case 8 (first) and Case 9 (second) are formed with a first entry groove 23 and a second entry groove 24, respectively, for the keeper 3 to enter.

[0024] Furthermore, the locking member 16 has a locking member entry groove 25 into which the keeper 3 can enter together with the first entry groove 23 and the second entry groove 24, and a pair of locking member engagement portions 26 provided on both sides of the locking member entry groove 25 that engage with the keeper 3 when the keeper 3 enters and exits.

[0025] Furthermore, the locking member 16 is provided so as to be rotatable and displaceable between a locked state and an unlocked state relative to the keeper 3 that has entered the first entry groove 23, the second entry groove 24, and the locking member entry groove 25.

[0026] The locking member 16 is biased in the unlocking direction relative to the keeper 3 by the first torsion coil spring 21.

[0027] A locking recess 31 is formed in this locking member 16.

[0028] The cam member locking projection 32 provided on the locking cam member 18 can be locked into this locking member locking recess 31.

[0029] In other words, the cam member locking projection 32 of the locking cam member 18 is provided so as to be rotatably displaceable between a locked state and an unlocked state with respect to the lock member locking recess 31 of the lock member 16, and in the locked state, it prevents rotational displacement of the lock member 16 in the unlocking direction against the biasing force of the first torsion coil spring 21, thereby holding the lock member 16 in the locked state.

[0030] This locking cam member 18 is biased in the locking direction relative to the locking member 16 by a tension coil spring 22.

[0031] Furthermore, the cam member locking projection 32 of the locking cam member 18 can be locked into the retaining member locking recess 33 provided on the unlocking retaining member 17.

[0032] In other words, the retaining member locking recess 33 of the unlocking retaining member 17 is provided so as to be rotatably displaceable between a locked state and an unlocked state relative to the cam member locking projection 32 of the locking cam member 18. In the locked state, it prevents the locking cam member 18 from rotating in the locking direction relative to the locking member 16, thereby holding the locking member 16 in the unlocked state.

[0033] Furthermore, the locking cam member 18 is provided with an interlocking mechanism (interlocking means) 34 that, when the cam member locking projection 32 of the locking cam member 18 rotates to a non-locked state relative to the locking member 16, interlocks with the unlocking holding member 17 to a locked state relative to the locking cam member 18.

[0034] In other words, the interlocking mechanism 34 is configured to displace the retaining member locking recess 33 of the unlocking retaining member 17 toward the locking direction relative to the cam member locking projection 32 of the locking cam member 18, in conjunction with the rotational displacement of the cam member locking projection 32 of the locking cam member 18 toward the unlocked state relative to the locking member locking recess 33 of the locking member 16.

[0035] Furthermore, the unlocking retaining member 17 includes a retaining member engaging portion 35 that engages when the keeper 3 exits the first entry groove 23 and the second entry groove 24, and an unlocking cancel button 36 for manually rotating and displacing the locking cam member 18 to an unlocked state.

[0036] Furthermore, the locking cam member 18 has a cam member locking recess 37 formed therein.

[0037] The lever locking edge 38 provided on the unlocking lever 19 can be locked into this cam member locking recess 37.

[0038] In other words, the unlocking lever 19 is configured such that the lever locking edge 38 acts on the locking cam member 18, causing the locking cam member 18 to rotate and displace relative to the locking member 16 in the non-locking direction.

[0039] Furthermore, the unlocking lever 19 is biased by the tension coil spring 22 in a direction that does not act on the locking cam member 18.

[0040] In the above configuration, as shown in Figures 4 and 5, when the movable part 4 approaches the fixed part 5, the keeper 3 enters the first entry groove 23, the second entry groove 24, and the locking member entry groove 25. In the locked state, when the locking member 16 locks the keeper 3 so that it cannot exit, the locking member engagement part 26 blocks the first entry groove 23 and the second entry groove 24, and the movable part 4 cannot move away from the fixed part 5.

[0041] At this time, the cam member locking projection 32 of the locking cam member 18 engages with the lock member locking recess 31, preventing rotational displacement of the locking cam member 18 in the unlocking direction.

[0042] Furthermore, at this time, the cam member locking projection 32 is in an unlocked state with respect to the retaining member locking recess 33.

[0043] From this state, as shown in Figures 6 and 7, when the unlocking lever 19 is operated, the lever locking edge 38 of the unlocking lever 19 acts on the locking cam member 18, causing the locking cam member 18 to rotate and displace.

[0044] As a result, the cam member locking projection 32 rotates and displaces in the non-locking direction relative to the locking member locking recess 31, and the interlocking part 34 of the locking cam member 18 comes into contact with the unlocking holding member 17.

[0045] As shown in Figures 8 and 9, further operation of the unlocking lever 19 causes the unlocking holding member 17 to rotate and displace.

[0046] As shown in Figures 10 and 11, when the fingers are released from the unlocking lever 19, the unlocking lever 19 rotates and displaces back to its original position due to the biasing force of the tension coil spring 22.

[0047] As a result, the locking cam member 18 is rotated and displaced by the biasing force of the tension coil spring 22, and the cam member locking projection 32 engages with the retaining member locking recess 33.

[0048] At this time, the cam member locking projection 32 becomes disengaged from the lock member locking recess 31, and this disengaged state is maintained.

[0049] Therefore, the locking member 16 becomes rotatable, that is, the keeper 3 becomes able to disengage from the locking member entry groove 25, and this state is maintained.

[0050] As shown in Figures 12 and 13, when attempting to pull the keeper 3 out of the first entry groove 23 of the first case 8 and the second entry groove 24 of the second case 9 by separating the movable part 4 from the fixed part 5, the keeper 3 comes into contact with the retaining member engaging part 35 of the unlocking retaining member 17.

[0051] As shown in Figures 14 and 15, when the keeper 3 is pulled out, the unlocking retaining member 17 returns to its original position, and the retaining member locking recess 33 and the cam member locking projection 32 become disengaged.

[0052] As shown in Figures 16 and 17, pulling out the keeper 3 unlocks the device.

[0053] As shown in Figures 18 and 19, when the keeper 3 is inserted again, the keeper 3 comes into contact with the locking member engaging portion 26 of the locking member 16.

[0054] When the keeper 3 is inserted further in, as shown in Figures 4 and 5, the locking member 16 rotates and the cam member locking projection 32 engages with the locking member locking recess 31, resulting in a locked state.

[0055] With the above configuration, the unlocked state can be maintained, so even if you release your fingers from the unlocking lever 19, the movable part 4 can be separated from the fixed part 5.

[0056] <Second Embodiment> A second embodiment of the present invention will be described below with reference to the drawings.

[0057] In the first embodiment described above, an interlocking mechanism (interlocking means) 34 was provided on the locking cam member 18. However, in this second embodiment, as shown in Figures 20 and 21, a second torsion coil spring (fourth spring) 41 that biases the unlocking holding member 17 toward the locking cam member 18 in the engagement direction is attached to the first shaft 13.

[0058] Even with this configuration, the same effects as in the first embodiment can be achieved.

[0059] <Third Embodiment> A third embodiment of the present invention will be described below with reference to the drawings.

[0060] In the first embodiment described above, an unlocking lever (unlocking means) 19 was provided. However, in this third embodiment, as shown in Figures 22 and 23, an unlocking operation unit (unlocking means) 42 is provided on the locking cam member 18, and the locking cam member 18 can be displaced relative to the locking member 16 in the non-locking direction.

[0061] By configuring it in this way, not only can the same effects as in the first embodiment be achieved, but the number of parts can also be reduced.

[0062] In the first to third embodiments described above, the first member was a movable part and the second member was a fixed part. However, in the present invention, the first member may be a fixed part and the second member a movable part, or both the first and second members may be movable parts. In short, it is sufficient that the first and second members are configured to move relative to each other.

[0063] The disclosure relating to the present invention described above can be summarized to at least the following:

[0064] In other words, the catch lock according to the present invention comprises a main body attached to a first member and a receiver attached to a second member that is provided to be able to move toward and away from the first member, the main body having a locking member provided to be displaceable between a locked state and an unlocked state relative to the receiver, a first spring that biases the locking member toward the receiver in the unlocking direction, a locking cam member provided to be displaceable between a locked state and an unlocked state relative to the locking member, which in the locked state prevents the locking member from being displaced toward the unlocking direction against the biasing force of the first spring and holds the locking member in the locked state, and the locking cam member having a locking cam member The invention is characterized by comprising: a second spring that biases in the locking direction; an unlocking holding member that is displaceable between a locked state and an unlocked state relative to the locking cam member, which in the locked state prevents the locking cam member from being displaced in the locking direction relative to the locking member and holds the locking member in an unlocked state, and which is put into an unlocked state relative to the locking cam member when the receiving portion separates from the main body as the first member and the second member separate; and an interlocking means that, when the locking cam member is displaced to an unlocked state relative to the locking member, displaces the unlocking holding member to a locked state relative to the locking cam member in conjunction with it.

[0065] The above invention may include at least the following embodiments. These embodiments may be adopted separately or in combination with each other.

[0066] (1) The interlocking mechanism may be provided on the locking cam member and may be configured to include an interlocking action that displaces the unlocking holding member in the locking direction relative to the locking cam member as the locking cam member is displaced to an unlocked state relative to the locking member.

[0067] (2) The unlocking holding member may be configured to include an unlocking cancel button for displacing it to a non-locked state relative to the locking cam member.

[0068] (3) The main body may be configured to include an unlocking means for unlocking by operating a locking cam member to release the locking state with the locking member.

[0069] (4) The unlocking means may be configured to include an unlocking lever that acts on the locking cam member to displace the locking cam member in the non-locking direction relative to the locking member.

[0070] (5) The unlocking means may be configured to include a third spring that biases the unlocking lever in a direction that does not act on the locking cam member.

[0071] (6) The unlocking means may be provided on the locking cam member and may be configured to include an unlocking operation part that acts on the locking cam member to displace the locking cam member in the direction of non-locking relative to the locking member.

[0072] (7) The interlocking mechanism may be configured to include a fourth spring that biases the unlocking holding member toward the locking cam member in the locking direction. [Explanation of Symbols]

[0073] 1 Catch Lock 2 Main unit 3. Receiving equipment (goalkeeper) 4. First component (movable part) 5. Second component (fixing part) 16 Locking member 17 Unlocking and holding member 18 Locking cam member 19. Unlocking mechanism (unlocking lever) 21. First spring (first torsion coil spring) 22. Second spring, third spring (tension coil spring) 34 Interlocking mechanism (interlocking mechanism) 36 Unlock / Cancel button 41. Fourth spring (second torsion coil spring) 42 Unlocking means (unlocking operation unit)

Claims

1. The main body is attached to the first component, A receiving device attached to a second member which is provided so as to be able to move toward and away from the first member, Equipped with, The aforementioned main body is A locking member is provided with respect to the aforementioned receiving device so as to be displaceable between a locked state and an unlocked state, A first spring biases the locking member toward the receiving device in the unlocking direction, A locking cam member is provided with respect to the locking member so as to be displaceable between a locked state and an unlocked state, and in the locked state, prevents the locking member from being displaced in the unlocking direction against the biasing force of the first spring and holds the locking member in a locked state. A second spring biases the locking cam member in the locking direction relative to the locking member, An unlocking and holding member is provided so as to be displaceable between a locked state and an unlocked state relative to the locking cam member, and in the locked state, prevents the locking cam member from being displaced in the locking direction relative to the locking member, thereby holding the locking member in an unlocked state, and when the first member and the second member separate, the receiving member separates from the main body, thereby being put into an unlocked state relative to the locking cam member, An interlocking means that, when the locking cam member is displaced to a non-locked state relative to the locking member, displaces the unlocking holding member to a locked state relative to the locking cam member; A catch lock characterized by having the following features.

2. The catch lock according to claim 1, wherein the interlocking means is provided on the locking cam member and includes an interlocking mechanism that displaces the unlocking holding member in the locking direction relative to the locking cam member in accordance with the displacement of the locking cam member to an unlocked state relative to the locking member.

3. The catch lock according to claim 1, characterized in that the unlocking holding member is provided with an unlocking cancel button for displacing the locking cam member to a non-locked state.

4. The catch lock according to claim 1, characterized in that the main body is provided with an unlocking means for releasing the locking state with the locking member by operating the locking cam member.

5. The catch lock according to claim 4, characterized in that the unlocking means includes an unlocking lever that acts on the locking cam member to displace the locking cam member in a non-locking direction relative to the locking member.

6. The catch lock according to claim 5, characterized in that the unlocking means comprises a third spring that biases the unlocking lever in a direction that does not act on the locking cam member.

7. The catch lock according to claim 4, characterized in that the unlocking means is provided on the locking cam member and includes an unlocking operation part that acts on the locking cam member to displace the locking cam member in a non-locking direction relative to the locking member.

8. The catch lock according to claim 1, characterized in that the interlocking means comprises a fourth spring that biases the unlocking holding member toward the locking cam member in the locking direction.

Images